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Carrasco-González JA, Ortega-Amaya R, Díaz-Torres E, Pérez-Guzmán MA, Ortega-López M. Low-Temperature Synthesis of Bi 2S 3 Hierarchical Microstructures via Co-Precipitation and Digestive Process in Aqueous Medium. Materials (Basel) 2024; 17:1818. [PMID: 38673175 PMCID: PMC11051110 DOI: 10.3390/ma17081818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/04/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
Bismuth sulfide (Bi2S3) nanostructures have gained significant attention in the fields of catalysis, optoelectronics, and biomedicine due to their unique physicochemical properties. This paper introduces a simple and cost-effective method for producing Bi2S3 microstructures at low temperatures (25 and 70 °C). These microstructures are formed by the hierarchical self-assembly of Bi2S3 nanoparticles, which are typically 15-40 nm in size. The nanoparticles are synthesized by the co-precipitation of thioglycolic acid, thioacetamide, and bismuth nitrate in water. The study delves into the phase composition and morphological evolution of the microstructures, concerning the chemical composition of the solution and the synthesis temperature. X-ray analysis has confirmed the formation of single-phase bismuthinite Bi2S3. The synthesis process generates primary building blocks in the form of 15-40 nm Bi2S3 nanocrystals, which then go through a hierarchical self-assembly process to produce a range of micrometer-sized structures. A scanning electron microscopy examination revealed that the primary nanoparticles self-assemble into quasi-1D worm-like nanostructures, which then self-assemble to create sponge-shaped microstructures. These structures subsequently self-organize and refine into either flower- or dandelion-like microstructures, mostly depending on the synthesis temperature and the chemistry of the digestion medium.
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Affiliation(s)
- José Alfonso Carrasco-González
- Sección de Electrónica del Estado Sólido, Departamento de Ingeniería Eléctrica, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN No. 2508, Ciudad de México 07360, Mexico; (J.A.C.-G.); (E.D.-T.)
- Programa de Doctorado Transdisciplinario en Desarrollo Científico y Tecnológico para la Sociedad, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN No. 2508, Ciudad de México 07360, Mexico
| | - Rebeca Ortega-Amaya
- CICFIM-Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Av. Universidad S/N, Cuidad Universitaria, San Nicolás de los Garza, Nuevo León 66451, Mexico;
| | - Esteban Díaz-Torres
- Sección de Electrónica del Estado Sólido, Departamento de Ingeniería Eléctrica, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN No. 2508, Ciudad de México 07360, Mexico; (J.A.C.-G.); (E.D.-T.)
| | - Manuel A. Pérez-Guzmán
- Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco No. 186, Ciudad de México 09340, Mexico
| | - Mauricio Ortega-López
- Programa de Doctorado Transdisciplinario en Desarrollo Científico y Tecnológico para la Sociedad, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN No. 2508, Ciudad de México 07360, Mexico
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Codrea CI, Lincu D, Atkinson I, Culita DC, Croitoru AM, Dolete G, Trusca R, Vasile BS, Stan MS, Ficai D, Ficai A. Comparison between Two Different Synthesis Methods of Strontium-Doped Hydroxyapatite Designed for Osteoporotic Bone Restoration. Materials (Basel) 2024; 17:1472. [PMID: 38611986 PMCID: PMC11012538 DOI: 10.3390/ma17071472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/15/2024] [Accepted: 03/17/2024] [Indexed: 04/14/2024]
Abstract
Development of efficient controlled local release of drugs that prevent systemic side effects is a challenge for anti-osteoporotic treatments. Research for new bone-regeneration materials is of high importance. Strontium (Sr) is known as an anti-resorptive and anabolic agent useful in treating osteoporosis. In this study, we compared two different types of synthesis used for obtaining nano hydroxyapatite (HA) and Sr-containing nano hydroxyapatite (SrHA) for bone tissue engineering. Synthesis of HA and SrHA was performed using co-precipitation and hydrothermal methods. Regardless of the synthesis route for the SrHA, the intended content of Sr was 1, 5, 10, 20, and 30 molar %. The chemical, morphological, and biocompatibility properties of HA and SrHA were investigated. Based on our results, it was shown that HA and SrHA exhibited low cytotoxicity and demonstrated toxic behavior only at higher Sr concentrations.
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Affiliation(s)
- Cosmin Iulian Codrea
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- Department of Oxide Compounds and Materials Science, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, 060021 Bucharest, Romania; (I.A.)
| | - Daniel Lincu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- Department of Oxide Compounds and Materials Science, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, 060021 Bucharest, Romania; (I.A.)
| | - Irina Atkinson
- Department of Oxide Compounds and Materials Science, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, 060021 Bucharest, Romania; (I.A.)
| | - Daniela C. Culita
- Department of Oxide Compounds and Materials Science, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, 060021 Bucharest, Romania; (I.A.)
| | - Alexa-Maria Croitoru
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- National Research Center for Micro and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- National Centre for Food Safety, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
| | - Georgiana Dolete
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- National Research Center for Micro and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- National Centre for Food Safety, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
| | - Roxana Trusca
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- National Research Center for Micro and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- National Centre for Food Safety, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
| | - Bogdan Stefan Vasile
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- National Research Center for Micro and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- National Centre for Food Safety, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
| | - Miruna Silvia Stan
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095 Bucharest, Romania;
| | - Denisa Ficai
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- National Research Center for Micro and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- National Centre for Food Safety, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
| | - Anton Ficai
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 060042 Bucharest, Romania; (D.L.); (A.-M.C.); (G.D.); (R.T.); (B.S.V.); (D.F.)
- National Research Center for Micro and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- National Centre for Food Safety, National University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov St. 3, 050044 Bucharest, Romania
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Umar M, Ajaz H, Javed M, Mansoor S, Iqbal S, Mahmood S, Rauf A, Aroosh K, Bahadur A, Alshalwi M. Green synthesis of tellurium-doped SnO 2 nanoparticles with sulfurized g-C 3 N 4 : Insights into methylene blue photodegradation and antibacterial capability. LUMINESCENCE 2024; 39:e4693. [PMID: 38403841 DOI: 10.1002/bio.4693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/22/2023] [Accepted: 01/25/2024] [Indexed: 02/27/2024]
Abstract
The construction of SnO2 nanoparticles (NPs), specifically Te-doped SnO2 NPs, using a simple and economical co-precipitation technique has been thoroughly described in this work. NH3 served as the reducing agent in this procedure, whilst polyethylene glycol served as the capping agent. The primary goals of our work were to investigate the physicochemical properties of the synthesized SnO2 NPs and assess their potential use as antibacterial agents and photocatalysts. Scanning electron microscopy-energy dispersive X-ray, ultraviolet light, Fourier transform infrared spectroscopy, X-ray diffraction (XRD), and other analytical techniques were used to thoroughly analyze the NPs. Based on the full width at half maximum of the most noticeable peaks in the XRD spectrum, the Debye-Scherrer equation was used to calculate the crystallite sizes, which indicated the presence of a single tetragonal SnO2 phase. Particularly noteworthy was the exceptional photocatalytic activity of graphene-assisted Te-doped SnO2 NPs, achieving an impressive decomposition efficiency of up to 98% in the photo-oxidation of methylene blue. Furthermore, our investigation delved into the antibacterial attributes of the synthesized SnO2 NPs against Escherichia coli and Staphylococcus aureus, demonstrating inhibitory effects on both bacteria strains. This suggests potential applications for these NPs in various environmental and medical contexts.
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Affiliation(s)
- Misbah Umar
- Department of Chemistry, University of Engineering and Technology Lahore, Lahore, Pakistan
| | - Humayun Ajaz
- Department of Chemistry, University of Engineering and Technology Lahore, Lahore, Pakistan
| | - Mohsin Javed
- Department of Chemistry, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Sana Mansoor
- Department of Chemistry, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Shahid Iqbal
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, China
| | - Sajid Mahmood
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, China
- Functional Materials Group, Gulf University for Science and Technology, Mishref, Kuwait
| | - Abdul Rauf
- Department of Chemistry, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Komal Aroosh
- Department of Chemistry, School of Science, University of Management and Technology, Lahore, Pakistan
| | - Ali Bahadur
- Department of Chemistry, College of Science, Mathematics, and Technology, Wenzhou-Kean University, Wenzhou, China
- Dorothy and George Hennings College of Science, Mathematics and Technology, Kean University, Newark, New Jersey, USA
| | - Matar Alshalwi
- Department of Chemistry, Collage of Science, King Saud University, Riyadh, Saudi Arabia
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Aaddouz M, Azzaoui K, Sabbahi R, Youssoufi MH, Yahyaoui MI, Asehraou A, El Miz M, Hammouti B, Shityakov S, Siaj M, Mejdoubi E. Cheminformatics-Based Design and Synthesis of Hydroxyapatite/Collagen Nanocomposites for Biomedical Applications. Polymers (Basel) 2023; 16:85. [PMID: 38201750 PMCID: PMC10780405 DOI: 10.3390/polym16010085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/18/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024] Open
Abstract
This paper presents a novel cheminformatics approach for the design and synthesis of hydroxyapatite/collagen nanocomposites, which have potential biomedical applications in tissue engineering, drug delivery, and orthopedic and dental implants. The nanocomposites are synthesized by the co-precipitation method with different ratios of hydroxyapatite and collagen. Their mechanical, biological, and degradation properties are analyzed using various experimental and computational techniques. Attenuated total reflection-Fourier-transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffraction unveil the low crystallinity and nanoscale particle size of hydroxyapatite (22.62 nm) and hydroxyapatite/collagen composites (14.81 nm). These findings are substantiated by scanning electron microscopy with energy-dispersive X-ray spectroscopy, confirming the Ca/P ratio between 1.65 and 1.53 and attesting to the formation of non-stoichiometric apatites in all samples, further validated by molecular simulation. The antimicrobial activity of the nanocomposites is evaluated in vitro against several bacterial and fungal strains, demonstrating their medical potential. Additionally, in silico analyses are performed to predict the absorption, distribution, metabolism, and excretion properties and the bioavailability of the collagen samples. This study paves the way for the development of novel biomaterials using chemoinformatics tools and methods, facilitating the optimization of design and synthesis parameters, as well as the prediction of biological outcomes. Future research directions should encompass the investigation of in vivo biocompatibility and bioactivity of the nanocomposites, while exploring further applications and functionalities of these innovative materials.
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Affiliation(s)
- Mohamed Aaddouz
- Laboratory of Applied Chemistry and Environment, Team: Mineral Chemistry of Solids, Department of Chemistry, Faculty of Sciences, Mohammed 1st University, P.O. Box 717, Oujda 60000, Morocco; (M.H.Y.); (E.M.)
| | - Khalil Azzaoui
- Laboratory of Engineering, Electrochemistry, Modeling and Environment, Faculty of Sciences, Sidi Mohamed Ben Abdellah University, Fez 30000, Morocco;
- Euromed Research Center, Euromed Polytechnic School, Euro-Mediterranean University of Fes, P.O. Box 15, Fes 30070, Morocco;
| | - Rachid Sabbahi
- Euromed Research Center, Euromed Polytechnic School, Euro-Mediterranean University of Fes, P.O. Box 15, Fes 30070, Morocco;
- Higher School of Technology, Ibn Zohr University, Quartier 25 Mars, P.O. Box 3007, Laayoune 70000, Morocco
| | - Moulay Hfid Youssoufi
- Laboratory of Applied Chemistry and Environment, Team: Mineral Chemistry of Solids, Department of Chemistry, Faculty of Sciences, Mohammed 1st University, P.O. Box 717, Oujda 60000, Morocco; (M.H.Y.); (E.M.)
| | - Meryem Idrissi Yahyaoui
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, Oujda 60000, Morocco; (M.I.Y.); (A.A.)
| | - Abdeslam Asehraou
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, Oujda 60000, Morocco; (M.I.Y.); (A.A.)
| | - Mohamed El Miz
- Laboratory of Molecular Chemistry, Materials and Environment (LCM2E), Multidisciplinary Faculty of Nador, University Mohamed I, Nador 60700, Morocco;
| | - Belkheir Hammouti
- Euromed Research Center, Euromed Polytechnic School, Euro-Mediterranean University of Fes, P.O. Box 15, Fes 30070, Morocco;
| | - Sergey Shityakov
- Department of Bioinformatics, Würzburg University, 97074 Würzburg, Germany;
| | - Mohamed Siaj
- Department of Chemistry, Université du Québec à Montréal, NanoQAM/QCAM, Montréal, QC H3C 3P8, Canada
| | - Elmiloud Mejdoubi
- Laboratory of Applied Chemistry and Environment, Team: Mineral Chemistry of Solids, Department of Chemistry, Faculty of Sciences, Mohammed 1st University, P.O. Box 717, Oujda 60000, Morocco; (M.H.Y.); (E.M.)
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Cam TS, Anh NPQ, Duc BNM, Thuy NT, Lei J, Thanh NT, Huy NN. Synthesis of Inexpensive Ternary Metal Oxides by a Co-Precipitation Method for Catalytic Oxidation of Carbon Monoxide. Chem Asian J 2023; 18:e202300683. [PMID: 37747137 DOI: 10.1002/asia.202300683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 09/26/2023]
Abstract
By using a simple co-precipitation method, new Fe2 O3 -based nanocatalysts (samples) were synthesized. The samples were composites of two or three transition metal oxides, MOx (M=Fe, Mn, Co, Ni, and Cu). The average size of CuO crystallites in the composites composed of two oxide components (CuO-Fe2 O3 ) was about 14.3 nm, while in those composed of three (CuO-MnOx -Fe2 O3 ), the composite's phase compositions were almost in the amorphous form when annealing the sample at 300 °C. The latter sample had a specific surface area higher than that of the former, 207.9 and 142.1 g/m2 , respectively, explaining its higher catalytic CO oxidation. The CO conversion over the CuO-MnOx -Fe2 O3 -300 catalyst (1 g of catalyst, 2600 ppm of CO concentration in air, and 1.0 L/min of gas flow rate) begins at about 40 °C; the temperature for 50 % CO conversion (t50 ) is near 82 °C; and CO removal is almost complete at t99 ≈110 °C. The activity of the optimal sample was tested in different catalytic conditions, thereby observing a high durability of 99-100 % CO conversion at 130 °C. The obtained results were derived from XRD, FTIR, BET, SEM, elemental analysis and mapping, as well as catalytic experiments.
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Affiliation(s)
- Thanh Son Cam
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam
- Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam
| | - Nguyen Phan Quang Anh
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, 700000, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam
| | - Bui Nguyen Minh Duc
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, 700000, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam
| | - Nguyen Thi Thuy
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam
- School of Chemical and Environmental Engineering, International University, Ho Chi Minh City, 700000, Vietnam
| | - Juying Lei
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, East China University of Science and Technology, Shanghai, 200237, P. R. China
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, P. R. China
| | - Nguyen Trung Thanh
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam
- Nanomaterial Laboratory, An Giang University, An Giang, 880000, Vietnam
| | - Nguyen Nhat Huy
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, 700000, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam
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Papadopoulos K, Myrovali E, Dubey A, Malletzidou L, Lupascu DC, Shvartsman VV, Wiedwald U, Angelakeris M. Control of physical properties in BiFeO 3nanoparticles via Sm 3+and Co 2+ion doping. Nanotechnology 2023; 35:015707. [PMID: 37748475 DOI: 10.1088/1361-6528/acfcc2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/24/2023] [Indexed: 09/27/2023]
Abstract
Highly crystalline BiFeO3(BFO), Bi0.97Sm0.03FeO3(Sm-BFO) and BiFe0.97Co0.03O3(Co-BFO) nanoparticles (NPs) were utilized as potential magnetic hyperthermia agents at two different frequencies in the radiofrequency (RF) range, and the effect of Sm3+and Co2+ion doping on the physical properties of the material was examined. The thermal behaviour of the as-prepared powders disclosed that the crystallization temperature of the powders is affected by the incorporation of the dopants into the BFO lattice and the Curie transition temperature is decreased upon doping. Vibrational analysis confirmed the formation of the R3c phase in all compounds through the characteristic FT-IR absorbance bands assigned to O-Fe-O bending vibration and Fe-O stretching of the octahedral FeO6group in the perovskite, as well as through Raman spectroscopy. The shift of the Raman-active phonon modes in Sm-BFO and Co-BFO NPs indicated structural distortion of the BFO lattice, which resulted in increased local polarization and enhanced visible light absorption. The aqueous dispersion of Co-BFO NPs showed the highest magnetic hyperthermia performance at 30 mT/765 kHz, entering the therapeutic temperature window for cancer treatment, whereas the heating efficiency of all samples was increased with increasing frequency from 375 to 765 kHz, making our doped nanoparticles to be suitable candidates for potential biomedical applications.
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Affiliation(s)
- Kyrillos Papadopoulos
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- MagnaCharta, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), 57001 Thessaloniki, Greece
| | - Eirini Myrovali
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- MagnaCharta, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), 57001 Thessaloniki, Greece
| | - Astita Dubey
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany
| | - Lamprini Malletzidou
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Doru C Lupascu
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany
| | - Vladimir V Shvartsman
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-45141 Essen, Germany
| | - Ulf Wiedwald
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D-47048 Duisburg, Germany
| | - Mavroeidis Angelakeris
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- MagnaCharta, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), 57001 Thessaloniki, Greece
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de la Fuente-Jiménez JL, Rodríguez-Rivas CI, Mitre-Aguilar IB, Torres-Copado A, García-López EA, Herrera-Celis J, Arvizu-Espinosa MG, Garza-Navarro MA, Arriaga LG, García JL, García-Gutiérrez DI, Dehesa AZ, Sharma A, Oza G. A Comparative and Critical Analysis for In Vitro Cytotoxic Evaluation of Magneto-Crystalline Zinc Ferrite Nanoparticles Using MTT, Crystal Violet, LDH, and Apoptosis Assay. Int J Mol Sci 2023; 24:12860. [PMID: 37629040 PMCID: PMC10454666 DOI: 10.3390/ijms241612860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Zinc ferrite nanoparticles (ZFO NPs) are a promising magneto-crystalline platform for nanomedicine-based cancer theranostics. ZFO NPs synthesized using co-precipitation method are characterized using different techniques. UV-visible spectroscopy exhibits absorption peaks specific for ZFO. Raman spectroscopy identifies Raman active, infrared active, and silent vibrational modes while Fourier transforms infrared spectroscopic (FTIR) spectra display IR active modes that confirm the presence of ZFO. X-ray diffraction pattern (XRD) exhibits the crystalline planes of single-phase ZFO with a face-centered cubic structure that coincides with the selected area electron diffraction pattern (SAED). The average particle size according to high-resolution transmission electron microscopy (HR-TEM) is 5.6 nm. X-ray photoelectron spectroscopy (XPS) signals confirm the chemical states of Fe, Zn, and O. A superconducting quantum interference device (SQUID) displays the magnetic response of ZFO NPs, showing a magnetic moment of 45.5 emu/gm at 70 kOe. These ZFO NPs were then employed for comparative cytotoxicity evaluation using MTT, crystal violet, and LDH assays on breast adenocarcinoma epithelial cell (MCF-7), triple-negative breast cancer lines (MDA-MB 231), and human embryonic kidney cell lines (HEK-293). Flow cytometric analysis of all the three cell lines were performed in various concentrations of ZFO NPs for automated cell counting and sorting based on live cells, cells entering in early or late apoptotic phase, as well as in the necrotic phase. This analysis confirmed that ZFO NPs are more cytotoxic towards triple-negative breast cancer cells (MDA-MB-231) as compared to breast adenocarcinoma cells (MCF-7) and normal cell lines (HEK-293), thus corroborating that ZFO can be exploited for cancer therapeutics.
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Affiliation(s)
- Juan Luis de la Fuente-Jiménez
- Centre of Bioengineering, School of Engineering and Sciences, Tecnologico de Monterrey, Campus Queretaro, Av. Epigmenio González, No. 500, Fracc. San Pablo, Querétaro 76130, Mexico; (J.L.d.l.F.-J.); (A.T.-C.); (M.G.A.-E.)
| | - César Iván Rodríguez-Rivas
- División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de Las Campanas S/N, Querétaro 76010, Mexico; (C.I.R.-R.); (J.L.G.)
| | - Irma Beatriz Mitre-Aguilar
- Unidad de Bioquímica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga 15, Belisario Domínguez secc 16, Tlalpan, Mexico City 14080, Mexico; (I.B.M.-A.); (E.A.G.-L.)
| | - Andrea Torres-Copado
- Centre of Bioengineering, School of Engineering and Sciences, Tecnologico de Monterrey, Campus Queretaro, Av. Epigmenio González, No. 500, Fracc. San Pablo, Querétaro 76130, Mexico; (J.L.d.l.F.-J.); (A.T.-C.); (M.G.A.-E.)
| | - Eric Alejandro García-López
- Unidad de Bioquímica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga 15, Belisario Domínguez secc 16, Tlalpan, Mexico City 14080, Mexico; (I.B.M.-A.); (E.A.G.-L.)
| | - José Herrera-Celis
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Parque Tecnológico, Sanfandila, Pedro Escobedo, Querétaro 76703, Mexico; (J.H.-C.); (L.G.A.); (G.O.)
| | - María Goretti Arvizu-Espinosa
- Centre of Bioengineering, School of Engineering and Sciences, Tecnologico de Monterrey, Campus Queretaro, Av. Epigmenio González, No. 500, Fracc. San Pablo, Querétaro 76130, Mexico; (J.L.d.l.F.-J.); (A.T.-C.); (M.G.A.-E.)
| | - Marco Antonio Garza-Navarro
- Facultad de Ingeniería Mecánica y Eléctrica, FIME, Universidad Autónoma de Nuevo León, UANL, Av. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza 66450, Mexico; (M.A.G.-N.); (D.I.G.-G.)
| | - Luis Gerardo Arriaga
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Parque Tecnológico, Sanfandila, Pedro Escobedo, Querétaro 76703, Mexico; (J.H.-C.); (L.G.A.); (G.O.)
| | - Janet Ledesma García
- División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de Las Campanas S/N, Querétaro 76010, Mexico; (C.I.R.-R.); (J.L.G.)
| | - Domingo Ixcóatl García-Gutiérrez
- Facultad de Ingeniería Mecánica y Eléctrica, FIME, Universidad Autónoma de Nuevo León, UANL, Av. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza 66450, Mexico; (M.A.G.-N.); (D.I.G.-G.)
| | - Alejandro Zentella Dehesa
- Unidad de Bioquímica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga 15, Belisario Domínguez secc 16, Tlalpan, Mexico City 14080, Mexico; (I.B.M.-A.); (E.A.G.-L.)
- Departamento de Medicina Genómica y Toxicología Ambiental, Programa Institucional de Cáncer de Mama, Instituto de Investigaciones Biomédicas IIB & Red de Apoyo a la Investigación, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ave. Universidad 3000, Col. Copilco Universidad, Del. Coyoacán Ciudad de México, Mexico City 04510, Mexico
| | - Ashutosh Sharma
- Centre of Bioengineering, School of Engineering and Sciences, Tecnologico de Monterrey, Campus Queretaro, Av. Epigmenio González, No. 500, Fracc. San Pablo, Querétaro 76130, Mexico; (J.L.d.l.F.-J.); (A.T.-C.); (M.G.A.-E.)
| | - Goldie Oza
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Parque Tecnológico, Sanfandila, Pedro Escobedo, Querétaro 76703, Mexico; (J.H.-C.); (L.G.A.); (G.O.)
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8
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Xie Q, Tang J, Guo S, Zhao Q, Li S. Recent Progress of Preparation Strategies in Organic Nanoparticles for Cancer Phototherapeutics. Molecules 2023; 28:6038. [PMID: 37630290 PMCID: PMC10459389 DOI: 10.3390/molecules28166038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 07/27/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Phototherapy has the advantages of being a highly targeted, less toxic, less invasive, and repeatable treatment, compared with conventional treatment methods such as surgery, chemotherapy, and radiotherapy. The preparation strategies are significant in order to determine the physical and chemical properties of nanoparticles. However, choosing appropriate preparation strategies to meet applications is still challenging. This review summarizes the recent progress of preparation strategies in organic nanoparticles, mainly focusing on the principles, methods, and advantages of nanopreparation strategies. In addition, typical examples of cancer phototherapeutics are introduced in detail to inform the choice of appropriate preparation strategies. The relative future trend and outlook are preliminarily proposed.
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Affiliation(s)
| | | | | | - Qi Zhao
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; (Q.X.); (J.T.); (S.G.)
| | - Shengliang Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; (Q.X.); (J.T.); (S.G.)
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9
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Apostoluk A, Zhu Y, Gautier P, Valette A, Bluet JM, Cornier T, Masenelli B, Daniele S. Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method. Materials (Basel) 2023; 16:5400. [PMID: 37570103 PMCID: PMC10420257 DOI: 10.3390/ma16155400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023]
Abstract
Since ZnO nanoparticles (NPs) possess a variety of intrinsic defects, they can provide a wide spectrum of visible emission, without adding any impurity or any doping atoms. They are attracting more and more interest as a material for light sources and energy downshifting systems. However, defect emission with a high luminescence quantum efficiency (PL QY) is difficult to obtain. Here, we present the co-precipitation synthesis parameters permitting to attain ZnO NPs with highly visible PL QYs. We found that the nature of zinc precursors and alkaline hydroxide (KOH or LiOH) used in this method affects the emission spectra and the PL QY of the as-grown ZnO NPs. LiOH is found to have an advantageous effect on the visible emission efficiency when added during the synthesis of the ZnO NPs. More precisely, LiOH permits to increase the emission efficiency in the visible up to 13%. We discuss the effects of the nanoparticle size, the morphology and the surface stabilization on the enhancement of the luminescent emission efficiency. Various spectral contributions to the luminescent emission were also examined, in order to achieve a control of the defect emission to increase its efficiency.
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Affiliation(s)
- Alexandra Apostoluk
- Université de Lyon, INL-INSA Lyon, CNRS, UMR 5270, 69621 Villeurbanne, France; (A.A.)
| | - Yao Zhu
- Université de Lyon, INL-INSA Lyon, CNRS, UMR 5270, 69621 Villeurbanne, France; (A.A.)
| | - Pierrick Gautier
- Université de Lyon, IRCE Lyon, CNRS, UMR 5256, 69626 Villeurbanne, France
| | - Audrey Valette
- Université de Lyon, IRCE Lyon, CNRS, UMR 5256, 69626 Villeurbanne, France
| | - Jean-Marie Bluet
- Université de Lyon, INL-INSA Lyon, CNRS, UMR 5270, 69621 Villeurbanne, France; (A.A.)
| | - Thibaut Cornier
- Université de Lyon, IRCE Lyon, CNRS, UMR 5256, 69626 Villeurbanne, France
| | - Bruno Masenelli
- Université de Lyon, INL-INSA Lyon, CNRS, UMR 5270, 69621 Villeurbanne, France; (A.A.)
| | - Stephane Daniele
- Université de Lyon, IRCE Lyon, CNRS, UMR 5256, 69626 Villeurbanne, France
- C2P2-UMR 5265, ESCPE-Lyon, BP 2077, Univ Lyon, Université Claude Bernard Lyon 1, 69616 Villeurbanne, France
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10
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Chircov C, Bîrcă AC, Dănciulescu LA, Neacșu IA, Oprea OC, Trușcă RD, Andronescu E. Usnic Acid-Loaded Magnetite Nanoparticles-A Comparative Study between Synthesis Methods. Molecules 2023; 28:5198. [PMID: 37446861 DOI: 10.3390/molecules28135198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Since cancer is a continuously increasing concern for the general population, more efficient treatment alternatives ought to be developed. In this regard, a promising direction is represented by the use of magnetite nanoparticles (MNPs) to act both as a nanocarrier for the targeted release of antitumoral drugs and as hyperthermia agents. Thus, the present study focused on improving the control upon the outcome properties of MNPs by using two synthesis methods, namely the co-precipitation and microwave-assisted hydrothermal method, for the incorporation of usnic acid (UA), a natural lichen-derived metabolite with proven anticancer activity. The obtained UA-loaded MNPs were thoroughly characterized regarding their morpho-structural and physicochemical properties through X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS) and zeta potential, scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM). Results demonstrated the formation of magnetite as the unique mineralogical phase through both types of synthesis, with increased uniformity regarding the drug loading efficiency, size, stability, and magnetic properties obtained through the microwave-assisted hydrothermal method. Furthermore, the cytotoxicity of the nanostructures against the HEK 293T cell line was investigated through the XTT assay, which further proved their potential for anticancer treatment applications.
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Affiliation(s)
- Cristina Chircov
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | | | - Ionela Andreea Neacșu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Ovidiu-Cristian Oprea
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 011061 Bucharest, Romania
| | - Roxana-Doina Trușcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Academy of Romanian Scientists, 54 Spl. Independentei, 050045 Bucharest, Romania
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11
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Puppe D, Kaczorek D, Stein M, Schaller J. Silicon in Plants: Alleviation of Metal(loid) Toxicity and Consequential Perspectives for Phytoremediation. Plants (Basel) 2023; 12:2407. [PMID: 37446968 DOI: 10.3390/plants12132407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/14/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023]
Abstract
For the majority of higher plants, silicon (Si) is considered a beneficial element because of the various favorable effects of Si accumulation in plants that have been revealed, including the alleviation of metal(loid) toxicity. The accumulation of non-degradable metal(loid)s in the environment strongly increased in the last decades by intensified industrial and agricultural production with negative consequences for the environment and human health. Phytoremediation, i.e., the use of plants to extract and remove elemental pollutants from contaminated soils, has been commonly used for the restoration of metal(loid)-contaminated sites. In our viewpoint article, we briefly summarize the current knowledge of Si-mediated alleviation of metal(loid) toxicity in plants and the potential role of Si in the phytoremediation of soils contaminated with metal(loid)s. In this context, a special focus is on metal(loid) accumulation in (soil) phytoliths, i.e., relatively stable silica structures formed in plants. The accumulation of metal(loid)s in phytoliths might offer a promising pathway for the long-term sequestration of metal(loid)s in soils. As specific phytoliths might also represent an important carbon sink in soils, phytoliths might be a silver bullet in the mitigation of global change. Thus, the time is now to combine Si/phytolith and phytoremediation research. This will help us to merge the positive effects of Si accumulation in plants with the advantages of phytoremediation, which represents an economically feasible and environmentally friendly way to restore metal(loid)-contaminated sites.
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Affiliation(s)
- Daniel Puppe
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany
| | - Danuta Kaczorek
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany
- Department of Soil Environment Sciences, Warsaw University of Life Sciences (SGGW), 02-776 Warsaw, Poland
| | - Mathias Stein
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany
| | - Jörg Schaller
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany
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12
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Tabassum N, Singh V, Chaturvedi VK, Vamanu E, Singh MP. A Facile Synthesis of Flower-like Iron Oxide Nanoparticles and Its Efficacy Measurements for Antibacterial, Cytotoxicity and Antioxidant Activity. Pharmaceutics 2023; 15:1726. [PMID: 37376174 DOI: 10.3390/pharmaceutics15061726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/11/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
The objective of this study was to investigate the rhombohedral-structured, flower-like iron oxide (Fe2O3) nanoparticles that were produced using a cost-effective and environmentally friendly coprecipitation process. The structural and morphological characteristics of the synthesized Fe2O3 nanoparticles were analyzed using XRD, UV-Vis, FTIR, SEM, EDX, TEM, and HR-TEM techniques. Furthermore, the cytotoxic effects of Fe2O3 nanoparticles on MCF-7 and HEK-293 cells were evaluated using in vitro cell viability assays, while the antibacterial activity of the nanoparticles against Gram-positive and Gram-negative bacteria (Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae) was also tested. The results of our study demonstrated the potential cytotoxic activity of Fe2O3 nanoparticles toward MCF-7 and HEK-293 cell lines. The antioxidant potential of Fe2O3 nanoparticles was evidenced by the 1,1-diphenyl-2-picrylhydrazine (DPPH) and nitric oxide (NO) free radical scavenging assays. In addition, we suggested that Fe2O3 nanoparticles could be used in various antibacterial applications to prevent the spread of different bacterial strains. Based on these findings, we concluded that Fe2O3 nanoparticles have great potential for use in pharmaceutical and biological applications. The effective biocatalytic activity of Fe2O3 nanoparticles recommends its use as one of the best drug treatments for future views against cancer cells, and it is, therefore, recommended for both in vitro and in vivo in the biomedical field.
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Affiliation(s)
- Nazish Tabassum
- Centre of Biotechnology, University of Allahabad, Prayagraj 211002, India
| | - Virendra Singh
- Centre for Interdisciplinary Research in Basics Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Vivek K Chaturvedi
- Department of Gastroenterology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Emanuel Vamanu
- Faculty of Biotechnology, University of Agricultural Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Mohan P Singh
- Centre of Biotechnology, University of Allahabad, Prayagraj 211002, India
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13
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Fatehmulla A, Shamsan BA, El-Naggar AM, Aldhafiri AM, Qureshi N, Kim T, Atif M, Mahmood A, Asif M. Physical Characteristics, Blue-Green Band Emission and Photocatalytic Activity of Au-Decorated ZnO Quantum Dots-Based Thick Films Prepared Using the Doctor Blade Technique. Molecules 2023; 28:4644. [PMID: 37375199 DOI: 10.3390/molecules28124644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 05/29/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
Nanoscale ZnO is a vital semiconductor material whose versatility can be enhanced by sensitizing it with metals, especially noble metals, such as gold (Au). ZnO quantum dots were prepared via a simple co-precipitation technique using 2-methoxy ethanol as the solvent and KOH as the pH regulator for hydrolysis. The synthesized ZnO quantum dots were deposited onto glass slides using a simple doctor blade technique. Subsequently, the films were decorated with gold nanoparticles of different sizes using a drop-casting method. The resultant films were characterized via various strategies to obtain structural, optical, morphological, and particle size information. The X-ray diffraction (XRD) reveals the formation of the hexagonal crystal structure of ZnO. Upon Au nanoparticles loading, peaks due to gold are also observed. The optical properties study shows a slight change in the band gap due to Au loading. Nanoscale sizes of particles have been confirmed through electron microscope studies. P.L. studies display blue and blue-green band emissions. The significant degradation efficiency of 90.2% methylene blue (M.B.) was attained in natural pH in 120 min using pure ZnO catalyst while one drop gold-loaded catalysts, ZnO: Au 5 nm, ZnO: Au 7 nm, ZnO: Au 10 nm and ZnO: Au 15 nm, delivered M.B. degradation efficiency of 74.5% (in 245 min), 63.8% (240 min), 49.6% (240 min) and 34.0% (170 min) in natural pH, respectively. Such films can be helpful in conventional catalysis, photocatalysis, gas sensing, biosensing, and photoactive applications.
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Affiliation(s)
- Amanullah Fatehmulla
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Belqes A Shamsan
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed M El-Naggar
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdullah M Aldhafiri
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Nilam Qureshi
- Nano Particles Technology Laboratory, School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Gyeonggi-do, Republic of Korea
| | - Taesung Kim
- Nano Particles Technology Laboratory, School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Gyeonggi-do, Republic of Korea
| | - Muhammad Atif
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Asif Mahmood
- Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
| | - Mohammad Asif
- Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
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14
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Zin MEE, Moolkaew P, Junyusen T, Sutapun W. Preparation of hybrid particles of Ag nanoparticles and eggshell calcium carbonate and their antimicrobial efficiency against beef-extracted bacteria. R Soc Open Sci 2023; 10:221197. [PMID: 37234493 PMCID: PMC10206469 DOI: 10.1098/rsos.221197] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 04/17/2023] [Indexed: 05/28/2023]
Abstract
In this study, hybrid particles of AgNPs-loaded eggshell calcium carbonate (AgNPs/eCaCO3) were prepared by co-precipitating the eggshell in the presence of freshly prepared AgNPs with a particle size of 10-30 nm. The hybrid particles were comparatively precipitated at 25°C and 35°C using poly (sodium 4-styrenesulfonate) as a polyelectrolyte. The AgNPs/eCaCO3 particles prepared at 25°C had a spherical morphology with a mean diameter of 3.56 µm, and Brunauer-Emmett-Teller (BET) surface area of 85.08 m2 g-1. On the other hand, the particles prepared at 35°C had a broader size distribution with a mean diameter of 3.19 µm, and a BET surface area of 79.25 m2 g-1. AgNPs-loaded commercial calcium carbonate particles (AgNPs/CaCO3) comparatively prepared at 35°C were perfectly spherical with a mean diameter of 5.61 µm. At preparing temperature of 25°C, the hybrid particles contain AgNPs of 0.78 wt% for AgNPs/eCaCO3 and 3.20 wt% for AgNPs/CaCO3. The AgNPs/eCaCO3 and AgNPs/CaCO3 particles exhibited the same efficiency against bacteria extracted from beef with an average inhibition zone diameter of 7-10 mm according to the modified Kirby-Bauer disc diffusion assay depending on their concentration and beef source. Freshly prepared silver colloids showed comparatively poorer antimicrobial efficiency.
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Affiliation(s)
- Moe Ei Ei Zin
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Centre for Biocomposite Materials for Medical and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Pornpimol Moolkaew
- School of Agricultural Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Tiraporn Junyusen
- School of Agricultural Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Wimonlak Sutapun
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Research Centre for Biocomposite Materials for Medical and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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15
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Estévez Ruiz EP, Lago JL, Thirumuruganandham SP. Experimental Studies on TiO 2 NT with Metal Dopants through Co-Precipitation, Sol-Gel, Hydrothermal Scheme and Corresponding Computational Molecular Evaluations. Materials (Basel) 2023; 16:3076. [PMID: 37109913 PMCID: PMC10143655 DOI: 10.3390/ma16083076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/19/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
In the last decade, TiO2 nanotubes have attracted the attention of the scientific community and industry due to their exceptional photocatalytic properties, opening a wide range of additional applications in the fields of renewable energy, sensors, supercapacitors, and the pharmaceutical industry. However, their use is limited because their band gap is tied to the visible light spectrum. Therefore, it is essential to dope them with metals to extend their physicochemical advantages. In this review, we provide a brief overview of the preparation of metal-doped TiO2 nanotubes. We address hydrothermal and alteration methods that have been used to study the effects of different metal dopants on the structural, morphological, and optoelectrical properties of anatase and rutile nanotubes. The progress of DFT studies on the metal doping of TiO2 nanoparticles is discussed. In addition, the traditional models and their confirmation of the results of the experiment with TiO2 nanotubes are reviewed, as well as the use of TNT in various applications and the future prospects for its development in other fields. We focus on the comprehensive analysis and practical significance of the development of TiO2 hybrid materials and the need for a better understanding of the structural-chemical properties of anatase TiO2 nanotubes with metal doping for ion storage devices such as batteries.
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Affiliation(s)
- Eduardo Patricio Estévez Ruiz
- Centro de Investigación de Ciencias Humanas y de la Educación (CICHE), Universidad Indoamérica, Ambato 180103, Ecuador
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Universidade da Coruña, 15471 Ferrol, Spain
| | - Joaquín López Lago
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Universidade da Coruña, 15471 Ferrol, Spain
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16
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Sobahi N, Imran M, Khan ME, Mohammad A, Alam MM, Yoon T, Mehedi IM, Hussain MA, Abdulaal MJ, Jiman AA. Electrochemical Sensing of H 2O 2 by Employing a Flexible Fe 3O 4/Graphene/Carbon Cloth as Working Electrode. Materials (Basel) 2023; 16:2770. [PMID: 37049064 PMCID: PMC10096334 DOI: 10.3390/ma16072770] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
We report the synthesis of Fe3O4/graphene (Fe3O4/Gr) nanocomposite for highly selective and highly sensitive peroxide sensor application. The nanocomposites were produced by a modified co-precipitation method. Further, structural, chemical, and morphological characterization of the Fe3O4/Gr was investigated by standard characterization techniques, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM) and high-resolution TEM (HRTEM), Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS). The average crystal size of Fe3O4 nanoparticles was calculated as 14.5 nm. Moreover, nanocomposite (Fe3O4/Gr) was employed to fabricate the flexible electrode using polymeric carbon fiber cloth or carbon cloth (pCFC or CC) as support. The electrochemical performance of as-fabricated Fe3O4/Gr/CC was evaluated toward H2O2 with excellent electrocatalytic activity. It was found that Fe3O4/Gr/CC-based electrodes show a good linear range, high sensitivity, and a low detection limit for H2O2 detection. The linear range for the optimized sensor was found to be in the range of 10-110 μM and limit of detection was calculated as 4.79 μM with a sensitivity of 0.037 µA μM-1 cm-2. The cost-effective materials used in this work as compared to noble metals provide satisfactory results. As well as showing high stability, the proposed biosensor is also highly reproducible.
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Affiliation(s)
- Nebras Sobahi
- Department of Electrical & Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.M.A.)
| | - Mohd Imran
- Department of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi Arabia
| | - Mohammad Ehtisham Khan
- Department of Chemical Engineering Technology, College of Applied Industrial Technology (CAIT), Jazan University, Jazan 45142, Saudi Arabia
| | - Akbar Mohammad
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea;
| | - Md. Mottahir Alam
- Department of Electrical & Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.M.A.)
| | - Taeho Yoon
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea;
| | - Ibrahim M. Mehedi
- Department of Electrical & Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.M.A.)
- Center of Excellence in Intelligent Engineering Systems (CEIES), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammad A. Hussain
- Department of Electrical & Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.M.A.)
| | - Mohammed J. Abdulaal
- Department of Electrical & Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.M.A.)
| | - Ahmad A. Jiman
- Department of Electrical & Computer Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (M.M.A.)
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Muchenski F, Gonçalves JP, Ribeiro YC, Franco CRC, de Oliveira CC, Marcon BH, Robert A, de Medeiros LCS, de Oliveira RC, de Oliveira AJA, Mattoso N. Temperature influence on NiFeMo nanoparticles magnetic properties and their viability in biomedical applications. J Biomed Mater Res B Appl Biomater 2023. [PMID: 36880533 DOI: 10.1002/jbm.b.35248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 02/15/2023] [Accepted: 02/23/2023] [Indexed: 03/08/2023]
Abstract
NiFeMo alloy nanoparticles were synthesized by co-precipitation in the presence of organic additives. Nanoparticles thermal evolution shows that there is a significant increase in the average size (from 28 to 60 nm), consolidating a crystalline structure of the same type as the Ni3 Fe phase but with lattice parameter a = 0.362 nm. Measurements of magnetic properties follow this morphological and structural evolution increasing saturation magnetization (Ms) by 578% and reducing remanence magnetization (Mr) by 29%. Cell viability assays on as-synthesized revealed that nanoparticles (NPs) are not cytotoxic up to a concentration of 0.4 μg/mL for both non-tumorigenic (fibroblasts and macrophages) and tumor cells (melanoma).
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Affiliation(s)
| | - Jenifer Pendiuk Gonçalves
- Cell Biology Department, Laboratory of Inflammatory and Neoplastic Cells/ Laboratory of Sulfated Polysaccharides Investigation, Biological Sciences Sector - Universidade Federal do Paraná, Curitiba, Brazil
| | - Yasmin Carla Ribeiro
- Cell Biology Department, Laboratory of Inflammatory and Neoplastic Cells/ Laboratory of Sulfated Polysaccharides Investigation, Biological Sciences Sector - Universidade Federal do Paraná, Curitiba, Brazil
| | - Célia Regina Cavichiolo Franco
- Cell Biology Department, Laboratory of Inflammatory and Neoplastic Cells/ Laboratory of Sulfated Polysaccharides Investigation, Biological Sciences Sector - Universidade Federal do Paraná, Curitiba, Brazil
| | - Carolina Camargo de Oliveira
- Cell Biology Department, Laboratory of Inflammatory and Neoplastic Cells/ Laboratory of Sulfated Polysaccharides Investigation, Biological Sciences Sector - Universidade Federal do Paraná, Curitiba, Brazil
| | | | - Anny Robert
- Cell Biology Laboratory, Instituto Carlos Chagas (Fiocruz - Paraná), Curitiba, Brazil
| | | | - Ronei Cardoso de Oliveira
- Physics Department, Center for Exact Sciences and Technology, Superconductivity and Magnetism Laboratory, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Adilson Jesus Aparecido de Oliveira
- Physics Department, Center for Exact Sciences and Technology, Superconductivity and Magnetism Laboratory, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Ney Mattoso
- Physics Department, Exact Sciences Sector, Laboratory of Nanostructured Materials, Universidade Federal do Paraná, Curitiba, Brazil
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18
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Ge C, Lei C, Wang B, Wang Y, Peng Z, Wang Z, Guo Y. Evolution of the Morphology and Magnetic Properties of Flaky FeSiAl/MFe 2O 4 (M = Mn, Co, Ni, Cu, Zn) Composites. Nanomaterials (Basel) 2023; 13:712. [PMID: 36839079 PMCID: PMC9966722 DOI: 10.3390/nano13040712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Nanosized spinel ferrites MFe2O4 (M = Mn, Co, Ni, Cu, Zn)-coated flaky FeSiAl alloy composites were synthesized successfully. Nano-ferrites preferentially grow into nanoplatelets due to induced or restricted growth on the flaky surface of FeSiAl. With annealing temperature increasing, the ferrites' nanosheets thicken gradually and then grow into irregular particles. The annealing temperature not only affects the nanosized morphology and coating but also the magnetic properties of flaky FeSiAl composites. The saturation magnetization of CuFe2O4- or NiFe2O4-coated FeSiAl is approximate 69 emu/g, where the value of MnFe2O4-, CoFe2O4- and ZnFe2O4-coated FeSiAl show a decreasing trend generally from 64 emu/g to 55.7 emu/g annealing at 800 °C, respectively. The saturation magnetization of flaky FeSiAl composites was improved with the increased annealing temperature, except for those coated with ZnFe2O4 and NiFe2O4. These results are useful for improving the comprehensive properties of ferrite-coated flaky FeSiAl alloy composites.
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Affiliation(s)
- Chuannan Ge
- School of Physics and Information Engineering, Jiangsu Second Normal University, Nanjing 210013, China
| | - Chenglong Lei
- School of Physics and Information Engineering, Jiangsu Second Normal University, Nanjing 210013, China
- Haian Institute of High-Tech Research, Nanjing University, Nanjing 210093, China
| | - Bo Wang
- School of Physics and Information Engineering, Jiangsu Second Normal University, Nanjing 210013, China
| | - Yakun Wang
- School of Physics and Information Engineering, Jiangsu Second Normal University, Nanjing 210013, China
| | - Zhouhao Peng
- School of Physics and Information Engineering, Jiangsu Second Normal University, Nanjing 210013, China
| | - Zhitong Wang
- School of Physics and Information Engineering, Jiangsu Second Normal University, Nanjing 210013, China
| | - Yunjun Guo
- School of Physics and Information Engineering, Jiangsu Second Normal University, Nanjing 210013, China
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19
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Mann J, Garnweitner G, Schilde C. Preparation of Self-Assembled Nanoparticle-Polymer Hybrids from Modified Silica Nanoparticles and Polystyrene-Block-Polyacrylic Acid Vesicles via the Co-Precipitation Method. Polymers (Basel) 2023; 15:polym15020444. [PMID: 36679323 PMCID: PMC9867192 DOI: 10.3390/polym15020444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/01/2023] [Accepted: 01/04/2023] [Indexed: 01/18/2023] Open
Abstract
Nanoparticle-polymer hybrids are becoming increasingly important because seemingly contrasting properties, such as mechanical stability and high elasticity, can be combined into one material. In particular, hybrids made of self-assembled polymers are of growing interest since they exhibit high structural precision and diversity and the subsequent reorganization of the nanoparticles is possible. In this work, we show, for the first time, how hybrids of silica nanoparticles and self-assembled vesicles of polystyrene-block-polyacrylic acid can be prepared using the simple and inexpensive method of co-precipitation, highlighting in particular the challenges of using silica instead of other previously well-researched materials, such as gold. The aim was to investigate the influence of the type of modification and the particle size of the silica nanoparticles on the encapsulation and structure of the polymer vesicles. For this purpose, we first needed to adjust the surface properties of the nanoparticles, which we achieved with a two-step modification procedure using APTES and carboxylic acids of different chain lengths. We found that silica nanoparticles modified only with APTES could be successfully encapsulated, while those modified with APTES and decanoic acid resulted in vesicle agglomeration and poor encapsulation due to their strong hydrophobicity. In contrast, no negative effects were observed when different particle sizes (20 nm and 45 nm) were examined.
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Affiliation(s)
- Jil Mann
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
- Correspondence:
| | - Georg Garnweitner
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
| | - Carsten Schilde
- Institute for Particle Technology, Technische Universität Braunschweig, Volkmaroder Str. 5, 38104 Braunschweig, Germany
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
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20
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Lee J, Song YW, Lee H, Kim MY, Lim J. Synthesis of high-voltage cathode material using the Taylor-Couette flow-based co-precipitation method. Front Chem 2023; 11:1195170. [PMID: 37168443 PMCID: PMC10165001 DOI: 10.3389/fchem.2023.1195170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 04/07/2023] [Indexed: 05/13/2023] Open
Abstract
LiNi0.5Mn1.5O4 (LNMO), a next-generation high-voltage battery material, is promising for high-energy-density and power-density lithium-ion secondary batteries. However, rapid capacity degradation occurs due to problems such as the elution of transition metals and the generation of structural distortion during cycling. Herein, a new LNMO material was synthesized using the Taylor-Couette flow-based co-precipitation method. The synthesized LNMO material consisted of secondary particles composed of primary particles with an octahedral structure and a high specific surface area. In addition, the LNMO cathode material showed less structural distortion and cation mixing as well as a high cyclability and rate performance compared with commercially available materials.
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Affiliation(s)
- Junghwan Lee
- Korea Institute of Industrial Technology (KITECH), Gwangju, Republic of Korea
- Department of Materials Science and Engineering, Chonnam National University, Gwangju, Republic of Korea
| | - Young-Woong Song
- Korea Institute of Industrial Technology (KITECH), Gwangju, Republic of Korea
- Department of Materials Science and Engineering, Chonnam National University, Gwangju, Republic of Korea
| | - HyoChan Lee
- Korea Institute of Industrial Technology (KITECH), Gwangju, Republic of Korea
- Department of Materials Science and Engineering, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Young Kim
- Korea Institute of Industrial Technology (KITECH), Gwangju, Republic of Korea
| | - Jinsub Lim
- Korea Institute of Industrial Technology (KITECH), Gwangju, Republic of Korea
- *Correspondence: Jinsub Lim,
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21
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Adnan RM, Mezher M, Abdallah AM, Awad R, Khalil MI. Synthesis, Characterization, and Antibacterial Activity of Mg-Doped CuO Nanoparticles. Molecules 2022; 28. [PMID: 36615296 DOI: 10.3390/molecules28010103] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 12/25/2022] Open
Abstract
This study aims to investigate the effect of magnesium (Mg) doping on the characteristics and antibacterial properties of copper oxide (CuO) nanoparticles (NPs). The Mg-doped CuO NPs were fabricated by the co-precipitation method. NPs were characterized by X-ray Powder Diffraction (XRD), Transmission Electron Microscope (TEM), Energy Dispersive X-ray (EDX) analysis, Fourier Transform Infrared Spectroscopy (FTIR), and Photoluminescence (PL). Broth microdilution, agar-well diffusion, and time-kill assays were employed to assess the antibacterial activity of the NPs. XRD revealed the monoclinic structure of CuO NPs and the successful incorporation of Mg dopant to the Cu1-xMgxO NPs. TEM revealed the spherical shape of the CuO NPs. Mg doping affected the morphology of NPs and decreased their agglomeration. EDX patterns confirmed the high purity of the undoped and Mg-doped CuO NPs. FTIR analysis revealed the shifts in the Cu-O bond induced by the Mg dopant. The position, width, and intensity of the PL bands were affected as a result of Mg doping, which is an indication of vacancies. Both undoped and doped CuO NPs exhibited significant antibacterial capacities. NPs inhibited the growth of Gram-positive and Gram-negative bacteria. These results highlight the potential use of Mg-doped CuO NPs as an antibacterial agent.
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22
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Muşat V, Crintea (Căpăţână) L, Anghel EM, Stănică N, Atkinson I, Culiţă DC, Baroiu L, Țigău N, Cantaragiu Ceoromila A, Botezatu (Dediu) AV, Carp O. Ag-Decorated Iron Oxides-Silica Magnetic Nanocomposites with Antimicrobial and Photocatalytic Activity. Nanomaterials (Basel) 2022; 12:4452. [PMID: 36558305 PMCID: PMC9783173 DOI: 10.3390/nano12244452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Nanotechnology offers unlimited possibilities for creating effective hybrid materials, which combine functional performance in environment depollution and antimicrobial defense with a lack of toxicity, biocompatibility, biodegradability, and natural availability. This paper presents the silver effect on photocatalytic and antibacterial activities of double-coated iron oxide nanoparticles (NPs), Fe3O4@SiO2/ZnO-Ag. The structural, morphological, and textural information of the, core-shell iron oxides-based superparamagnetic nanoparticles (IOMNPs) decorated with 5% Ag by ultrasound-assisted synthesis were evaluated by scanning electron microscopy with energy dispersive spectroscopy (SEM-EDX), X-ray diffraction, Raman spectroscopy, and Brunauer-Emmett-Teller physisorption measurements. Although two synthesis temperatures of 95 and 80 °C were used for the co-precipitated iron oxide cores, the XRD patterns revealed the formation of a single magnetite, Fe3O4, phase. The sorption-photocatalytic activities under dark and UV irradiation encountered a maximum removal efficiency of the MB (90.47%) for the Fe3O4@SiO2/ZnO-Ag sample with iron oxide core obtained at 80 °C. The rate constant for the second-order kinetics was 0.0711 min-1 for 2 h, and the correlation coefficient R2 closed to unity. Two samples with Ag-decorated hybrid SiO2/ZnO shell and hierarchically interconnected porous structure with large surface area (328.8 and 342.5 m2g-1) exhibited the best disk diffusion antimicrobial activity against four microorganisms, especially gram-positive Staphylococcus aureus.
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Affiliation(s)
- Viorica Muşat
- Laboratory of Chemical Nanotechnologies-Center of Nanostructures and Functional Materials LNC-CNMF, Dunărea de Jos” University of Galati, 47 Domnească Street, 800008 Galati, Romania
| | - Lenuța Crintea (Căpăţână)
- Laboratory of Chemical Nanotechnologies-Center of Nanostructures and Functional Materials LNC-CNMF, Dunărea de Jos” University of Galati, 47 Domnească Street, 800008 Galati, Romania
| | - Elena-Maria Anghel
- Institute of Physical Chemistry “Ilie Murgulescu” of Romanian Academy, Spl. Independenţei 202, 060021 Bucharest, Romania
| | - Nicolae Stănică
- Institute of Physical Chemistry “Ilie Murgulescu” of Romanian Academy, Spl. Independenţei 202, 060021 Bucharest, Romania
| | - Irina Atkinson
- Institute of Physical Chemistry “Ilie Murgulescu” of Romanian Academy, Spl. Independenţei 202, 060021 Bucharest, Romania
| | - Daniela Cristina Culiţă
- Institute of Physical Chemistry “Ilie Murgulescu” of Romanian Academy, Spl. Independenţei 202, 060021 Bucharest, Romania
| | - Liliana Baroiu
- Faculty of Medicine and Pharmacy, “Dunărea de Jos” University of Galati, 47 Domnească Street, 800008 Galati, Romania
| | - Nicolae Țigău
- Department of Physical-Chemistry and Environment, “Dunărea de Jos” University of Galati, 47 Domnească Street, 800008 Galati, Romania
| | - Alina Cantaragiu Ceoromila
- Department of Applied Sciences, Cross-Border Faculty, “Dunărea de Jos” University of Galati, 47 Domnească Street, 800008 Galati, Romania
| | - Andreea-Veronica Botezatu (Dediu)
- Department of Physical-Chemistry and Environment, “Dunărea de Jos” University of Galati, 47 Domnească Street, 800008 Galati, Romania
| | - Oana Carp
- Institute of Physical Chemistry “Ilie Murgulescu” of Romanian Academy, Spl. Independenţei 202, 060021 Bucharest, Romania
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23
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Chernova E, Botvin V, Galstenkova M, Mukhortova Y, Wagner D, Gerasimov E, Surmeneva M, Kholkin A, Surmenev R. A Comprehensive Study of Synthesis and Analysis of Anisotropic Iron Oxide and Oxyhydroxide Nanoparticles. Nanomaterials (Basel) 2022; 12:4321. [PMID: 36500941 PMCID: PMC9739039 DOI: 10.3390/nano12234321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
One-dimensional anisotropic nanoparticles are of great research interest across a wide range of biomedical applications due to their specific physicochemical and magnetic properties in comparison with isotropic magnetic nanoparticles. In this work, the formation of iron oxides and oxyhydroxide anisotropic nanoparticles (ANPs) obtained by the co-precipitation method in the presence of urea was studied. Reaction pathways of iron oxide and oxyhydroxide ANPs formation are described based on of X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and pulse magnetometry studies. It is shown that a nonmonotonic change in the Fe3O4 content occurs during synthesis. The maximum content of the Fe3O4 phase of 47.4% was obtained at 12 h of the synthesis. At the same time, the reaction products contain ANPs of α-FeOOH and submicron isotropic particles of Fe3O4, the latter formation can occur due to the oxidation of Fe2+ ions by air-oxygen and Ostwald ripening processes. A subsequent increase in the synthesis time leads to the predominant formation of an α-FeOOH phase due to the oxidation of Fe3O4. As a result of the work, a methodological scheme for the analysis of iron oxide and oxyhydroxide ANPs was developed.
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Affiliation(s)
- Elizaveta Chernova
- International Research & Development Center Piezo and Magnetoelectric Materials, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Vladimir Botvin
- International Research & Development Center Piezo and Magnetoelectric Materials, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Maria Galstenkova
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Yulia Mukhortova
- International Research & Development Center Piezo and Magnetoelectric Materials, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Dmitry Wagner
- Scientific Laboratory for Terahertz Research, National Research Tomsk State University, 634050 Tomsk, Russia
| | - Evgeny Gerasimov
- Department of Catalyst Research, Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia
| | - Maria Surmeneva
- International Research & Development Center Piezo and Magnetoelectric Materials, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Andrei Kholkin
- International Research & Development Center Piezo and Magnetoelectric Materials, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
- School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, Russia
| | - Roman Surmenev
- International Research & Development Center Piezo and Magnetoelectric Materials, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
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24
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Frank DS, Punia A, Fahy M, Dalton C, Rowe J, Schenck L. Densifying Co-Precipitated Amorphous Dispersions to Achieve Improved Bulk Powder Properties. Pharm Res 2022; 39:3197-3208. [PMID: 36271203 DOI: 10.1007/s11095-022-03416-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/11/2022] [Indexed: 12/27/2022]
Abstract
PURPOSE Precipitation of amorphous solid dispersions has gained traction in the pharmaceutical industry given its application to pharmaceuticals with varying physicochemical properties. Although preparing co-precipitated amorphous dispersions (cPAD) in high-shear rotor-stator devices allows for controlled shear conditions during precipitation, such aggressive mixing environments can result in materials with low bulk density and poor flowability. This work investigated annealing cPAD after precipitation by washing with heated anti-solvent to improve bulk powder properties required for downstream drug product processing. METHODS Co-precipitation dispersions were prepared by precipitation into pH-modified aqueous anti-solvent. Amorphous dispersions were washed with heated anti-solvent and assessed for bulk density, flowability, and dissolution behavior relative to both cPAD produced without a heated wash and spray dried intermediate. RESULTS Washing cPAD with a heated anti-solvent resulted in an improvement in flowability and increased bulk density. The mechanism of densification was ascribed to annealing over the wetted Tg of the material, which lead to collapse of the porous co-precipitate structure into densified granules without causing crystallization. In contrast, an alternative approach to increase bulk density by precipitating the ASD using low shear conditions showed evidence of crystallinity. The dissolution rate of the densified cPAD granules was lower than that of the low-bulk density dispersions, although both samples reached concentrations equivalent to that of the spray dried intermediate after 90 min dissolution. CONCLUSIONS Hot wash densification was a tenable route to produce co-precipitated amorphous dispersions with improved properties for downstream processing compared to non-densified powders.
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Affiliation(s)
- Derek S Frank
- Process Research & Development, Merck & Co., Inc., Rahway, NJ, USA.
| | - Ashish Punia
- Analytical Research & Development, Merck & Co., Inc., Rahway, NJ, USA
| | - Mairead Fahy
- Pharmaceutical Commercialization Technology, Merck & Co., Inc., Rahway, NJ, USA
| | - Chad Dalton
- Formulation Sciences, Merck & Co., Inc., Rahway, NJ, USA
| | - Jasmine Rowe
- Formulation Sciences, Merck & Co., Inc., Rahway, NJ, USA
| | - Luke Schenck
- Process Research & Development, Merck & Co., Inc., Rahway, NJ, USA
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25
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Benucci I, Mazzocchi C, Lombardelli C, Del Franco F, Cerreti M, Esti M. Inclusion of curcumin in b-cyclodextrin: a promising prospective as food ingredient. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1942-1952. [PMID: 36255357 DOI: 10.1080/19440049.2022.2135764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In the present work, the inclusion complexes between curcumin (CC) and β-cyclodextrin (β-CD) were obtained through co-precipitation at different times of magnetic stirring and simple mixing. The stoichiometric ratio between CC and β-CD was ascertained to be 1:2. The samples prepared by co-precipitation (24 h magnetic stirring and 24 h cold static precipitation) and by simple mixing, showed the best performance in terms of powder recovery (72 and 97%, respectively), encapsulation efficiency (72 and 95%, respectively) and tinting power, while no significant differences were revealed in terms of loading capacity (about 14%). Using either inclusion method, the complexation of CC into β-CD make the colorant 20-fold more water soluble than pure CC. The pigment stability was also enhanced under different storage conditions (high temperature and light exposure), either when applied in liquid or gel state. However, after 30 days under natural light exposure, an appreciable colour change from yellow to orange was revealed to an extent probably perceptible by an inexperienced observer.
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Affiliation(s)
- Ilaria Benucci
- Department of Agriculture and Forestry Science (DAFNE), Tuscia University, Viterbo, Italy
| | - Caterina Mazzocchi
- Department of Agriculture and Forestry Science (DAFNE), Tuscia University, Viterbo, Italy
| | - Claudio Lombardelli
- Department of Agriculture and Forestry Science (DAFNE), Tuscia University, Viterbo, Italy
| | - Felicia Del Franco
- Department of Agriculture and Forestry Science (DAFNE), Tuscia University, Viterbo, Italy
| | - Martina Cerreti
- Department of Agriculture and Forestry Science (DAFNE), Tuscia University, Viterbo, Italy
| | - Marco Esti
- Department of Agriculture and Forestry Science (DAFNE), Tuscia University, Viterbo, Italy
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26
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Wi JH, Park SG, Shim YS, Lee K, Jung JY. Rare-Earth-Doped Barium Molybdate Up-Conversion Phosphor with Potential Application in Optical Temperature Sensing. Materials (Basel) 2022; 15:7917. [PMID: 36431401 PMCID: PMC9697691 DOI: 10.3390/ma15227917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/01/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
A BaMoO4:[Er3+]/[Yb3+] up-conversion (UC) phosphor was synthesized by co-precipitation and calcination of the precursor at 800 °C. The main peak (112) for the synthesized phosphor was strongly detected in the XRD pattern and had a tetragonal structure. The doping of rare-earth ions affected the crystal lattice by shifting the main peak, decreasing the lattice constant, and shifting the position of the Raman signal. The synthesized upconverted phosphor exhibited strong green signals at 530 and 553 nm and weak red signals at 657 nm when excited at 980 nm. The green light emission intensity of the UC phosphor increased as the pump power of the laser increased due to the two-photon effect. The synthesized upconverted phosphor was prepared as a pellet and flexible composite. Thermal quenching led to a decrease in luminescence intensity as the temperature increased, which means that the phosphor can be applied to optical temperature sensing.
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Affiliation(s)
- Jung-Hyun Wi
- Department of Smart Manufacturing Engineering, Changwon National University, Changwon 51140, Korea
| | - Sang-Geon Park
- Department of Mechatronics Convergence Engineering, Changwon National University, Changwon 51140, Korea
| | - Young-Seok Shim
- School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, Cheonan 31253, Korea
| | - Kwangjae Lee
- Department of Information Security Engineering, SangMyung University, Hongjimum 2-gil, Seoul 03016, Korea
| | - Jae-Yong Jung
- Research and Business Development Foundation, Engineering Building, Silla University, Busan 45985, Korea
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Szymaszek-Wawryca A, Summa P, Duraczyńska D, Díaz U, Motak M. Hydrotalcite-Modified Clinoptilolite as the Catalyst for Selective Catalytic Reduction of NO with Ammonia (NH 3-SCR). Materials (Basel) 2022; 15:7884. [PMID: 36431374 PMCID: PMC9696415 DOI: 10.3390/ma15227884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/01/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
A series of clinoptilolite-supported catalysts, modified with hydrotalcite-like phase (HT) by co-precipitation, were prepared and tested in NH3-SCR reactions. It was found that deposition of HT on clinoptilolite increased conversion of NO within 250-450 °C, and that the positive impact on the catalytic activity was independent of HT loading. The promoting effect of clinoptilolite was attributed to Brönsted acid sites present in the zeolite, which facilitated adsorption and accumulation of ammonia during the catalytic process. Concentration of N2O in the post-reaction gas mixture reached its maximum at 300 °C and the by-product was most likely formed as a consequence of NH4NO3 decomposition or side reaction of NH3 oxidation in the high-temperature region. The gradual elimination of nitrous oxide, noticed as the material with the highest concentration of hydrotalcite phase, was attributed to the abundance of oligomeric iron species and the superior textural parameters of the material. UV-Vis experiments performed on the calcined samples indicated that Fe sites of higher nuclearity were generated by thermal decomposition of the hydrotalcite phase during the catalytic reaction. Therefore, calcination of the materials prior to the catalytic tests was not required to obtain satisfactory overall catalytic performance in NO reductions.
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Affiliation(s)
- Agnieszka Szymaszek-Wawryca
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Adama Mickiewicza 30, 30-059 Krakow, Poland
| | - Paulina Summa
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Adama Mickiewicza 30, 30-059 Krakow, Poland
| | - Dorota Duraczyńska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Ul. Niezapominajek 8, 30-239 Krakow, Poland
| | - Urbano Díaz
- Instituto de Tecnología Química, UPV-CSIC, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos, s/n, 46022 Valencia, Spain
| | - Monika Motak
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Adama Mickiewicza 30, 30-059 Krakow, Poland
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Hashmi SUM, Iqbal MA, Malik M, Qamar MT, Khan M, Zahid A, Islam MR, Al-Bahrani M, Morsy K, Lai WC. Synthesis and Characterization of Polyvinyl Chloride Matrix Composites with Modified Scrap Iron for Advanced Electronic, Photonic, and Optical Systems. Nanomaterials (Basel) 2022; 12:3147. [PMID: 36144935 PMCID: PMC9503333 DOI: 10.3390/nano12183147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
In this study, Fe2O3 powder was synthesized using the co-precipitation method from scrap iron, which was then treated with varying concentrations of copper. Afterwards, the modified Fe2O3 was reinforced in the PVC matrix by using the solution-casting method to synthesize PVC composite films, which were subjected to a UV-visible spectrophotometer, a Fourier transform infrared spectrophotometer, an X-ray diffractometer, and a thermal gravimetric analyzer to evaluate the optical, chemical, structural, and thermal properties. FTIR analysis reveals the formation of the composite through vibrational bands pertaining to both components present, whereas no significant changes in the XRD patterns of PVC were observed after the doping of modified iron oxide, which reveals the compatibility of fillers with the PVC matrix. The optical properties of the copper-doped iron oxide-PVC composites, including absorbance, refractive index, urbach energy, and optical as well as electrical conductivity are measured, and show an increase in optical activity when compared to the pure PVC compound. Moreover, the increased thermal stability of the synthesized composite was also observed and compared with conventional compounds, which, in accordance with all the other mentioned properties, makes the copper-dopped iron oxide-PVC composite an effective material for electronic, photonic, and optical device applications.
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Affiliation(s)
| | - Muhammad Aamir Iqbal
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Maria Malik
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan
| | | | - Maham Khan
- Department of Chemistry, Forman Christian College, Lahore 54600, Pakistan
| | - Abu Zahid
- Department of Computer Science, Lamar University, Beaumont, TX 77705, USA
| | - Md. Rasidul Islam
- Department of Electrical and Electronic Engineering, Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University, Melandah, Jamalpur 2012, Bangladesh
| | - Mohammed Al-Bahrani
- Air conditioning and Refrigeration Techniques Engineering Department, Al-Mustaqbal University College, Babylon 51001, Iraq
| | - Kareem Morsy
- Biology Department, College of Science, King Khalid University, Abha 61421, Saudi Arabia
| | - Wen-Cheng Lai
- Bachelor Program in Industrial Projects, National Yunlin University of Science and Technology, Douliu 640301, Taiwan
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 640301, Taiwan
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Frank DS, Prasad P, Iuzzolino L, Schenck L. Dissolution Behavior of Weakly Basic Pharmaceuticals from Amorphous Dispersions Stabilized by a Poly(dimethylaminoethyl Methacrylate) Copolymer. Mol Pharm 2022; 19:3304-3313. [PMID: 35985017 DOI: 10.1021/acs.molpharmaceut.2c00456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amorphous solid dispersions (ASDs) are a well-documented formulation approach to improve the rate and extent of dissolution for hydrophobic pharmaceuticals. However, weakly basic compounds can complicate standard approaches to ASDs due to pH-dependent solubility, resulting in uncontrolled drug release in gastric conditions and unstabilized supersaturated solutions prone to precipitation at neutral pH. This work examines the release mechanisms of amorphous dispersions containing model weakly basic pharmaceuticals posaconazole and lumefantrine from a basic poly(dimethylaminoethyl methacrylate) copolymer (Eudragit EPO) and compares their dissolution behavior with ASDs stabilized by acidic and neutral polymers to understand potential benefits to release from a basic polymeric stabilizer. It was found that dissolution of Eudragit EPO ASDs resulted in supersaturation under gastric conditions, which could be sustained upon adjustment to neutral pH. However, the dissolution behavior of Eudragit EPO ASDs was sensitive to the initial pH of the gastric media. For lumefantrine, elevated initial gastric pH resulted in precipitation of amorphous nanoparticles; for posaconazole, elevated gastric pH led to crystallization of the pharmaceutical from solution. This sensitivity to gastric pH was found to originate from the impact of Eudragit EPO on gastric pH and the solubility of each pharmaceutical in the first stage of dissolution. In total, these data illustrate benefits and liabilities for the use of Eudragit EPO for ASDs containing weak pharmaceutical bases to guide the design of robust pharmaceutical formulations.
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Affiliation(s)
- Derek S Frank
- Particle Engineering Lab, Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Prateek Prasad
- Particle Engineering Lab, Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Luca Iuzzolino
- Computational and Structural Chemistry, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Luke Schenck
- Particle Engineering Lab, Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
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Al-Qasmi N, Almughem FA, Jarallah SJ, Almaabadi A. Efficient Green Synthesis of (Fe 3O 4) and (NiFe 2O 4) Nanoparticles Using Star Anise ( Illicium verum) Extract and Their Biomedical Activity against Some Cancer Cells. Materials (Basel) 2022; 15:4832. [PMID: 35888298 PMCID: PMC9324409 DOI: 10.3390/ma15144832] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 02/04/2023]
Abstract
Magnetite Fe3O4 and spinel (2:1) and (4:1) NiFe2O4 magnetic nanoparticles (MNPs) were prepared by simple and affordable co-precipitation methods using an extract of star anise (Illicium verum) as a green reducing agent. The morphology and chemical composition of these MNPs were confirmed by field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, UV-visible spectroscopy, and X-ray diffraction (XRD). The synthesized magnetite Fe3O4 and spinel (2:1) and (4:1) NiFe2O4 MNPs were in the size range of 0.1-1 µm. The MNPs had irregular clustered platelets (magnetite Fe3O4) and pyramidal structures (spinel (2:1) and (4:1) NiFe2O4 NPs). The average sizes of the synthesized magnetite Fe3O4, and spinel (2:1) and (4:1) NiFe2O4 MNPs calculated using XRD analysis were 66.8, 72.5, and 72.9 nm, respectively. In addition to the characteristic absorption peaks of magnetite Fe3O4, those of spinel (2:1) and (4:1) NiFe2O4 MNPs were detected at ~300-350 nm and ~700 nm, respectively. Overall, the results of this study indicate that the synthesized magnetite Fe3O4, and spinel (2:1) and (4:1) NiFe2O4 MNPs showed high biomedical activities against liver carcinoma cells and non-small lung adenocarcinoma cells.
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Affiliation(s)
- Noha Al-Qasmi
- Chemistry Department, Faculty of Science, Taif University, Al Hawiyah, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Fahad A. Almughem
- National Center for Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia; (F.A.A.); (S.J.J.)
| | - Somayah J. Jarallah
- National Center for Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia; (F.A.A.); (S.J.J.)
| | - Amani Almaabadi
- National Center for Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia; (F.A.A.); (S.J.J.)
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Jiang X, Long W, Peng L, Xu T, He F, Tang Y, Zhang W. Reductive immobilization of Cr(VI) in contaminated water by tannic acid. Chemosphere 2022; 297:134081. [PMID: 35202661 DOI: 10.1016/j.chemosphere.2022.134081] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 01/23/2022] [Accepted: 02/20/2022] [Indexed: 06/14/2023]
Abstract
The rapid reductive immobilization of Cr(VI) from the aqueous solution was achieved by reduction to Cr(III) using tannic acid (TA), and subsequent pH-triggering precipitation of the organo-Cr(III) complexes formed in the redox reaction. The effects of TA concentration, temperature, and solution pH on the reduction of Cr(VI) were examined by batch experiments, and the rapid redox reduction followed a second-order kinetics with respect to Cr(VI) concentration in the pH range of 2.0-3.0. UV-visible spectra, FTIR, and XPS confirmed the complete detoxification of Cr(VI) concomitant with carboxylation of partial phenolic hydroxyls in TA. Synchronously, the reduced Cr(III) coordinated with carboxyl groups in oxidized TA (OTA) to form complexes, which exhibited remarkable pH-dependent size distribution characteristics as illustrated by SEM images and sequential filtration/ultrafiltration. The resulted Cr(III) complexes could aggregate into colloids with larger size and precipitate out at pH range of 6.0-8.0 via cross-linking, thereby leading to 93% Cr and 89% TOC immobilization. An eco-friendly and cost-effective method for Cr(VI) elimination and immobilization is provided because polyphenols are natural polymers derived from plants.
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Affiliation(s)
- Xiaofeng Jiang
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Wenjun Long
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Liangqiong Peng
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Teng Xu
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Faming He
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Yuling Tang
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Wenhua Zhang
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China; National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China.
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Rafique M, Safdar N, Irshad M, Usman M, Akhtar M, Saleem MW, Abbas MM, Ashour A, Soudagar ME. Influence of Low Sintering Temperature on BaCe 0.2Zr 0.6Y 0.2O 3-δ IT-SOFC Perovskite Electrolyte Synthesized by Co-Precipitation Method. Materials (Basel) 2022; 15:ma15103585. [PMID: 35629612 PMCID: PMC9146529 DOI: 10.3390/ma15103585] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/08/2022] [Accepted: 05/11/2022] [Indexed: 11/16/2022]
Abstract
BaCe0.2Zr0.6Y0.2O3−δ (BCZY) perovskite electrolytes were synthesized for intermediate-temperature solid oxide fuel cell with a cost-effective and versatile co-precipitation method. The synthesized BCZY electrolytes were sintered at 900, 1000, and 1100 °C to observe the effects of low sintering temperature on the structural, morphological, thermal, and electrical properties of BCZY. All BCZY electrolytes materials exhibited a crystalline perovskite structure and were found to be thermally stable. The crystallinity and conductivity of BCZY electrolyte enhanced with increased sintering temperature, due to the grain growth. At the same time, secondary phases of carbonates were also observed for samples sintered at a temperature lower than 1100 °C. The BCZY sintered at 1100 °C exhibited a density >95%, and a power density of 350 mWcm−2 with open-circuit voltage 1.02 V at 650 °C was observed due its dense and airtight structure. Based on the current investigation, we suggest that the BaCe0.2Zr0.6Y0.2O3−δ perovskite electrolyte sintered at a temperature of 1100 °C is a suitable electrolyte for IT-SOFC.
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Affiliation(s)
- Muhammad Rafique
- Department of Physics, University of Sahiwal, Sahiwal 57000, Pakistan
- Correspondence: (M.R.); (M.M.A.)
| | - Neelam Safdar
- Department of Physics, University of Gujrat, Gujrat 50700, Pakistan;
| | - Muneeb Irshad
- Department of Physics, University of Engineering and Technology, Lahore 54890, Pakistan;
| | - Muhammad Usman
- Department of Mechanical Engineering, University of Engineering and Technology, Lahore 54890, Pakistan;
| | - Maaz Akhtar
- Mechanical Engineering Department, NED University of Engineering and Technology, Karachi 75270, Pakistan;
| | - Muhammad Wajid Saleem
- Department of Mechanical and Mechatronics Engineering, College of Engineering, Dhofar University, Salalah 211, Oman;
| | - Muhammad Mujtaba Abbas
- Department of Mechanical Engineering, New Campus, University of Engineering and Technology, Lahore 39021, Pakistan
- Correspondence: (M.R.); (M.M.A.)
| | - Ahmed Ashour
- Engineering Mathematics and Physics Department, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11845, Egypt;
| | - Manzoore Elahi Soudagar
- Department of Mechanical Engineering and University Centre for Research & Development, Chandigarh University, Mohali 140413, Punjab, India;
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Koyama S, Hamai R, Shiwaku Y, Kurobane T, Tsuchiya K, Takahashi T, Suzuki O. Angio-osteogenic capacity of octacalcium phosphate co-precipitated with copper gluconate in rat calvaria critical-sized defect. Sci Technol Adv Mater 2022; 23:120-139. [PMID: 35185389 PMCID: PMC8856029 DOI: 10.1080/14686996.2022.2035193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/20/2022] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
The objective of this study is to investigate the effects of octacalcium phosphate (OCP)-induced bone regeneration on angiogenesis regulated by the inclusion of copper ions in OCP in vitro and in vivo. Calcium (Ca)-deficient Cu-OCPs, containing 0.01 wt% Cu (low-Cu-OCP) and 0.12 wt% Cu (high-Cu-OCP), were synthesized with co7pper gluconate salt. The lattice parameters of Cu-OCPs tended to decrease slightly with Cu inclusion, as estimated by Rietveld analysis. Cu ions were released in OCP when the materials were incubated in the medium for human umbilical vein endothelial cells (HUVECs). The solubility of Cu-OCPs, estimated by the degree of supersaturation, was slightly higher than that of the original OCP. Cu-OCP tended to hydrolyze to an apatite structure while maintaining the crystal plate-like morphology when incubated with mesenchymal stem D1 cells in osteogenic media for 14 days. The specimens were characterized by selected area electron diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy. Low-Cu-OCP significantly enhanced the HUVEC capillary cross-linking density. D1 cell differentiation was inhibited with the inclusion of Cu, even at low concentrations. The composite of low-Cu-OCP with a gelatin sponge (low-Cu-OCP/Gel) significantly enhanced angiogenesis coupled with bone regeneration when implanted in a rat calvarial critical-sized defect for 4 weeks, compared with the corresponding amount of Cu-containing Gel (Cu/Gel) or OCP/Gel materials through angiography and tissue histomorphometry. These results support the proposition that angiogenesis stimulated by low-Cu-OCP is closely related with enhanced bone regeneration.
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Affiliation(s)
- Shinki Koyama
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Ryo Hamai
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yukari Shiwaku
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Tsuyoshi Kurobane
- Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Kaori Tsuchiya
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Tetsu Takahashi
- Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
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Celitan E, Gruskiene R, Sereikaite J. An Optimization Procedure for Preparing Aqueous CAR/HP-CD Aggregate Dispersions. Molecules 2021; 26:7562. [PMID: 34946642 DOI: 10.3390/molecules26247562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 01/20/2023] Open
Abstract
β-Carotene is a very important molecule for human health. It finds a large application in the food industry, especially for the development of functional foods and dietary supplements. However, β-carotene is an unstable compound and is sensitive to light, temperature, and oxygen. To overcome those limitations, various delivery systems were developed. The inclusion of β-carotene by cyclodextrin aggregates is attractive due to non-toxicity, low hygroscopicity, stability, and the inexpensiveness of cyclodextrins. In this study, β-carotene/2-hydroxypropyl-β-cyclodextrin aggregates were prepared based on the procedure of the addition of β-carotene in an organic solvent to the hot water dispersion of 2-hydroxypropyl-β-cyclodextrin and the following instant evaporation of the organic solvent. The best conditions for the aggregate preparation were found to be as follows: 25% concentration of 2-hydroxypropyl-β-cyclodextrin in water, 65 °C temperature, and acetone for β-carotene dissolution. The efficiency of entrapping was equal to 88%. The procedure is attractive due to the short time of the aggregate preparation.
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You Z, Xu J. Investigation on Variables Contributing to the Synthesis of C-S-H/PCE Nanocomposites by Co-Precipitation Method. Materials (Basel) 2021; 14:ma14247673. [PMID: 34947269 PMCID: PMC8708204 DOI: 10.3390/ma14247673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/20/2021] [Accepted: 12/06/2021] [Indexed: 12/01/2022]
Abstract
The usage of nanoscale calcium silicate hydrate (nano C-S-H) proved to have an excellent promotion effect on the early performance of concrete as nano C-S-H with ultra-fine particle size can act as seeding for cement hydration. Therefore, it is of importance to tune the particle size during the synthesis process of nano C-S-H. In this paper, the influence of several variables of the particle size distribution (PSD) of nano C-S-H synthesized by chemical co-precipitation method with the aid of polycarboxylate (PCE) was studied by orthogonal experimental design. In addition, the composition, microstructure, and morphology of the C-S-H/PCE nanocomposites were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectrum. The results showed that the concentration of reactants had a significant impact on the PSD of C-S-H/PCE nanocomposites, followed by the dosage of dispersant. Ultrasonic treatment was effective in breaking the C-S-H/PCE aggregates with unstable agglomeration structures. The change in synthetic variables had a negligible effect on the composition of the C-S-H/PCE nanocomposites but had a significant influence on the crystallinity and morphology of the composites.
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Rabe A, Büker J, Salamon S, Koul A, Hagemann U, Landers J, Friedel Ortega K, Peng B, Muhler M, Wende H, Schuhmann W, Behrens M. The Roles of Composition and Mesostructure of Cobalt-Based Spinel Catalysts in Oxygen Evolution Reactions. Chemistry 2021; 27:17038-17048. [PMID: 34596277 PMCID: PMC9298119 DOI: 10.1002/chem.202102400] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Indexed: 11/10/2022]
Abstract
By using the crystalline precursor decomposition approach and direct co-precipitation the composition and mesostructure of cobalt-based spinels can be controlled. A systematic substitution of cobalt with redox-active iron and redox-inactive magnesium and aluminum in a cobalt spinel with anisotropic particle morphology with a preferred 111 surface termination is presented, resulting in a substitution series including Co3 O4 , MgCo2 O4 , Co2 FeO4 , Co2 AlO4 and CoFe2 O4 . The role of redox pairs in the spinels is investigated in chemical water oxidation by using ceric ammonium nitrate (CAN test), electrochemical oxygen evolution reaction (OER) and H2 O2 decomposition. Studying the effect of dominant surface termination, isotropic Co3 O4 and CoFe2 O4 catalysts with more or less spherical particles are compared to their anisotropic analogues. For CAN-test and OER, Co3+ plays the major role for high activity. In H2 O2 decomposition, Co2+ reveals itself to be of major importance. Redox active cations in the structure enhance the catalytic activity in all reactions. A benefit of a predominant 111 surface termination depends on the cobalt oxidation state in the as-prepared catalysts and the investigated reaction.
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Affiliation(s)
- Anna Rabe
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141, Essen, Germany
| | - Julia Büker
- Laboratory of Industrial Chemistry Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Soma Salamon
- Faculty of Physics and CENIDE, University of Duisburg-Essen, Lotharstraße 1, 45057, Duisburg, Germany
| | - Adarsh Koul
- Analytical Chemistry-Center for Electrochemical Sciences (CES) Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Ulrich Hagemann
- Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen, Carl-Benz-Straße 199, 47057, Duisburg, Germany.,Center for Nanointegration Duisburg-Essen (CENIDE), Carl-Benz-Straße 199, 47057, Duisburg, Germany
| | - Joachim Landers
- Faculty of Physics and CENIDE, University of Duisburg-Essen, Lotharstraße 1, 45057, Duisburg, Germany
| | - Klaus Friedel Ortega
- Institute for Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
| | - Baoxiang Peng
- Laboratory of Industrial Chemistry Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Heiko Wende
- Faculty of Physics and CENIDE, University of Duisburg-Essen, Lotharstraße 1, 45057, Duisburg, Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry-Center for Electrochemical Sciences (CES) Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44780, Bochum, Germany
| | - Malte Behrens
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstr. 7, 45141, Essen, Germany.,Center for Nanointegration Duisburg-Essen (CENIDE), Carl-Benz-Straße 199, 47057, Duisburg, Germany.,Institute for Inorganic Chemistry, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118, Kiel, Germany
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37
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Stamate AE, Zăvoianu R, Pavel OD, Birjega R, Matei A, Dumitru M, Brezeștean I, Osiac M, Marcu IC. The Influence of the Preparation Method on the Physico-Chemical Properties and Catalytic Activities of Ce-Modified LDH Structures Used as Catalysts in Condensation Reactions. Molecules 2021; 26:6191. [PMID: 34684773 PMCID: PMC8537870 DOI: 10.3390/molecules26206191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/10/2021] [Accepted: 10/12/2021] [Indexed: 11/22/2022] Open
Abstract
Mechanical activation and mechanochemical reactions are the subjects of mechanochemistry, a special branch of chemistry studied intensively since the 19th century. Herein, we comparably describe two synthesis methods used to obtain the following layered double hydroxide doped with cerium, Mg3Al0.75Ce0.25(OH)8(CO3)0.5·2H2O: the mechanochemical route and the co-precipitation method, respectively. The influence of the preparation method on the physico-chemical properties as determined by multiple techniques such as XRD, SEM, EDS, XPS, DRIFT, RAMAN, DR-UV-VIS, basicity, acidity, real/bulk densities, and BET measurements was also analyzed. The obtained samples, abbreviated HTCe-PP (prepared by co-precipitation) and HTCe-MC (prepared by mechanochemical method), and their corresponding mixed oxides, Ce-PP (resulting from HTCe-PP) and Ce-MC (resulting from HTCe-MC), were used as base catalysts in the self-condensation reaction of cyclohexanone and two Claisen-Schmidt condensations, which involve the reaction between an aromatic aldehyde and a ketone, at different molar ratios to synthesize compounds with significant biologic activity from the flavonoid family, namely chalcone (1,3-diphenyl-2-propen-1-one) and flavone (2-phenyl-4H-1benzoxiran-4-one). The mechanochemical route was shown to have indisputable advantages over the co-precipitation method for both the catalytic activity of the solids and the costs.
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Affiliation(s)
- Alexandra-Elisabeta Stamate
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
| | - Rodica Zăvoianu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
| | - Octavian Dumitru Pavel
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
| | - Ruxandra Birjega
- National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania; (R.B.); (A.M.); (M.D.)
| | - Andreea Matei
- National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania; (R.B.); (A.M.); (M.D.)
| | - Marius Dumitru
- National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania; (R.B.); (A.M.); (M.D.)
| | - Ioana Brezeștean
- National Institute for R&D of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania;
- Biomolecular Physics Department, Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Mariana Osiac
- Department of Physics, INCESA, University of Craiova, 200585 Craiova, Romania;
| | - Ioan-Cezar Marcu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania; (A.-E.S.); (O.D.P.)
- Research Center for Catalysts and Catalytic Processes, Faculty of Chemistry, University of Bucharest, 030018 Bucharest, Romania
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Gutierrez FV, De Falco A, Yokoyama E, Mendoza LAF, Luz-Lima C, Perez G, Loreto RP, Pottker WE, La Porta FA, Solorzano G, Arsalani S, Baffa O, Araujo JFDF. Magnetic Characterization by Scanning Microscopy of Functionalized Iron Oxide Nanoparticles. Nanomaterials (Basel) 2021; 11:2197. [PMID: 34578513 DOI: 10.3390/nano11092197] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/19/2021] [Accepted: 08/24/2021] [Indexed: 12/26/2022]
Abstract
This study aimed to systematically understand the magnetic properties of magnetite (Fe3O4) nanoparticles functionalized with different Pluronic F-127 surfactant concentrations (Fe3O4@Pluronic F-127) obtained by using an improved magnetic characterization method based on three-dimensional magnetic maps generated by scanning magnetic microscopy. Additionally, these Fe3O4 and Fe3O4@Pluronic F-127 nanoparticles, as promising systems for biomedical applications, were prepared by a wet chemical reaction. The magnetization curve was obtained through these three-dimensional maps, confirming that both Fe3O4 and Fe3O4@Pluronic F-127 nanoparticles have a superparamagnetic behavior. The as-prepared samples, stored at approximately 20 °C, showed no change in the magnetization curve even months after their generation, resulting in no nanoparticles free from oxidation, as Raman measurements have confirmed. Furthermore, by applying this magnetic technique, it was possible to estimate that the nanoparticles' magnetic core diameter was about 5 nm. Our results were confirmed by comparison with other techniques, namely as transmission electron microscopy imaging and diffraction together with Raman spectroscopy. Finally, these results, in addition to validating scanning magnetic microscopy, also highlight its potential for a detailed magnetic characterization of nanoparticles.
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Constantinoiu I, Viespe C. Synthesis Methods of Obtaining Materials for Hydrogen Sensors. Sensors (Basel) 2021; 21:s21175758. [PMID: 34502649 PMCID: PMC8434051 DOI: 10.3390/s21175758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/18/2021] [Accepted: 08/23/2021] [Indexed: 12/21/2022]
Abstract
The development of hydrogen sensors has acquired a great interest from researchers for safety in fields such as chemical industry, metallurgy, pharmaceutics or power generation, as well as due to hydrogen’s introduction as fuel in vehicles. Several types of sensors have been developed for hydrogen detection, including resistive, surface acoustic wave, optical or conductometric sensors. The properties of the material of the sensitive area of the sensor are of great importance for establishing its performance. Besides the nature of the material, an important role for its final properties is played by the synthesis method used and the parameters used during the synthesis. The present paper highlights recent results in the field of hydrogen detection, obtained using four of the well-known synthesis and deposition methods: sol-gel, co-precipitation, spin-coating and pulsed laser deposition (PLD). Sensors with very good results have been achieved by these methods, which gives an encouraging perspective for their use in obtaining commercial hydrogen sensors and their application in common areas for society.
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Affiliation(s)
- Izabela Constantinoiu
- Laser Department, National Institute for Laser, Plasma and Radiation Physics, Atomistilor 409, RO-077125 Magurele, Romania;
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, RO-011061 Bucharest, Romania
| | - Cristian Viespe
- Laser Department, National Institute for Laser, Plasma and Radiation Physics, Atomistilor 409, RO-077125 Magurele, Romania;
- Correspondence:
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Zhang C, Han X, Wang F, Wang L, Liang J. A Facile Fabrication of ZnFe 2O 4/Sepiolite Composite with Excellent Photocatalytic Performance on the Removal of Tetracycline Hydrochloride. Front Chem 2021; 9:736369. [PMID: 34485250 PMCID: PMC8415418 DOI: 10.3389/fchem.2021.736369] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/02/2021] [Indexed: 11/13/2022] Open
Abstract
The excellent photo-response of ZnFe2O4 in the visible light region makes it a promising catalyst, whereas some defects like serious particle agglomeration and easy recombination of photo-generated electron-hole pairs hinder its application. In this work, the ZnFe2O4/sepiolite (ZF-Sep) composites were synthesized using a co-precipitation method. The obtained ZF-Sep composites were characterized by XRD, SEM, TEM, FT-IR, XPS, BET, VSM and DRS. Moreover, the photocatalytic performance was evaluated by the tetracycline hydrochloride removal efficiency under simulated visible light illumination. The results displayed that the ZnFe2O4 with average sizes about 20 nm were highly dispersed on sepiolite nanofibers. All the composites exhibited better photocatalytic performance than pure ZnFe2O4 due to the synergistic effect of the improvement on the agglomeration phenomenon of ZnFe2O4 and the reduction on the recombination rate of photo-generated electrons and holes. The optimum removal efficiency was that of the ZF-Sep-11 composite, which reached 93.6% within 3 h. Besides, the composite exhibited an excellent stability and reusability. Therefore, ZF-Sep composite is a promising catalyst for the treatment of wastewater contained antibiotics.
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Affiliation(s)
- Caihong Zhang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China
- Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin, China
| | - Xiaoyu Han
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China
- Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin, China
| | - Fei Wang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China
- Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin, China
| | - Lijuan Wang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China
- Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin, China
| | - Jinsheng Liang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China
- Institute of Power Source and Ecomaterials Science, Hebei University of Technology, Tianjin, China
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Mahajan R, Suriyanarayanan S, Nicholls IA. Improved Solvothermal Synthesis of γ-Fe 2O 3 Magnetic Nanoparticles for SiO 2 Coating. Nanomaterials (Basel) 2021; 11:1889. [PMID: 34443719 PMCID: PMC8398533 DOI: 10.3390/nano11081889] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/06/2021] [Accepted: 07/18/2021] [Indexed: 01/16/2023]
Abstract
Monodisperse magnetic γ-Fe2O3 nanoparticles (MNPs) were prepared by a simple, improved, one-pot solvothermal synthesis using SDS and PEG 6000 as double capping reagents. This double protecting layer afforded better MNP uniformity (Z average 257 ± 11.12 nm, PDI = 0.18) and colloidal stability. Materials were characterized by DLS, SEM, TEM, XPS, and XRD. The use of these MNPs in the synthesis of core-shell structures with uniform and tunable silica coatings was demonstrated, as silica coated MNPs are important for use in a range of applications, including magnetic separation and catalysis and as platforms for templated nanogel synthesis.
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Affiliation(s)
- Rashmi Mahajan
- Linnaeus University Centre for Biomaterials Chemistry, Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden;
| | - Subramanian Suriyanarayanan
- Linnaeus University Centre for Biomaterials Chemistry, Bioorganic and Biophysical Chemistry Laboratory, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden;
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Jung JY, Yi SS, Hwang DH, Son CS. Structure, Luminescence, and Magnetic Properties of Crystalline Manganese Tungstate Doped with Rare Earth Ion. Materials (Basel) 2021; 14:3717. [PMID: 34279299 DOI: 10.3390/ma14133717] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/30/2021] [Accepted: 06/30/2021] [Indexed: 11/17/2022]
Abstract
The precursor prepared by co-precipitation method was sintered at various temperatures to synthesize crystalline manganese tungstate (MnWO4). Sintered MnWO4 showed the best crystallinity at a sintering temperature of 800 °C. Rare earth ion (Dysprosium; Dy3+) was added when preparing the precursor to enhance the magnetic and luminescent properties of crystalline MnWO4 based on these sintering temperature conditions. As the amount of rare earth ions was changed, the magnetic and luminescent characteristics were enhanced; however, after 0.1 mol.%, the luminescent characteristics decreased due to the concentration quenching phenomenon. In addition, a composite was prepared by mixing MnWO4 powder, with enhanced magnetism and luminescence properties due to the addition of dysprosium, with epoxy. To one of the two prepared composites a magnetic field was applied to induce alignment of the MnWO4 particles. Aligned particles showed stronger luminescence than the composite sample prepared with unsorted particles. As a result of this, it was suggested that it can be used as phosphor and a photosensitizer by utilizing the magnetic and luminescent properties of the synthesized MnWO4 powder with the addition of rare earth ions.
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Hameed A, Batool M, Iqbal W, Abbas S, Imran M, Khan IA, Nadeem MA. ZIF-12/Fe-Cu LDH Composite as a High Performance Electrocatalyst for Water Oxidation. Front Chem 2021; 9:686968. [PMID: 34249860 PMCID: PMC8264502 DOI: 10.3389/fchem.2021.686968] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 05/10/2021] [Indexed: 11/21/2022] Open
Abstract
Layered double hydroxides (LDH) are being used as electrocatalysts for oxygen evolution reactions (OERs). However, low current densities limit their practical applications. Herein, we report a facile and economic synthesis of an iron-copper based LDH integrated with a cobalt-based metal-organic framework (ZIF-12) to form LDH-ZIF-12 composite (1) through a co-precipitation method. The as-synthesized composite 1 requires a low overpotential of 337 mV to achieve a catalytic current density of 10 mA cm-2 with a Tafel slope of 89 mV dec-1. Tafel analysis further demonstrates that 1 exhibits a slope of 89 mV dec-1 which is much lower than the slope of 284 mV dec-1 for LDH and 172 mV dec-1 for ZIF-12. The slope value of 1 is also lower than previously reported electrocatalysts, including Ni-Co LDH (113 mV dec-1) and Zn-Co LDH nanosheets (101 mV dec-1), under similar conditions. Controlled potential electrolysis and stability test experiments show the potential application of 1 as a heterogeneous electrocatalyst for water oxidation.
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Affiliation(s)
- Arslan Hameed
- Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Mariam Batool
- Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Waheed Iqbal
- Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Saghir Abbas
- Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Muhammad Imran
- Department of Chemistry, Faculty of Sciences, King Khalid University, Abha, Saudi Arabia
| | - Inayat Ali Khan
- Chemistry of Interfaces, Luleå University of Technology, Luleå, Sweden
| | - Muhammad Arif Nadeem
- Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Wang H, Zhang W, Meng J, Pei Y, Qiu X, Meng F, Liu X. Effectively Promoting Activity and Stability of a MnCo 2O 4-Based Cathode by In Situ Constructed Heterointerfaces for Solid Oxide Fuel Cells. ACS Appl Mater Interfaces 2021; 13:24329-24340. [PMID: 33978394 DOI: 10.1021/acsami.1c06757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The development of multiphase composite electrocatalysts plays a key role in achieving the efficient and durable operation of intermediate-temperature solid oxide fuel cells (IT-SOFCs). Herein, a self-assembled nanocomposite is developed as the oxygen reduction reaction (ORR) catalyst for IT-SOFCs through a coprecipitation method. The nanocomposite is composed of a doped (Mn0.6Mg0.4)0.8Sc0.2Co2O4 (MMSCO) spinel oxide (84 wt %), an orthorhombic perovskite phase (11.3 wt %, the spontaneous combination of PrO2 additives and spinel), and a minor Sc2O3 phase (4.7 wt %). The surface of the (Mn0.6Mg0.4)0.8Sc0.2Co2O4 phase is activated by the self-assembled nanocoating with many heterogeneous interfaces. Thence, the ORR kinetics is obviously accelerated and an area-specific resistance (ASR) of ∼0.11 Ω cm2 is obtained at 750 °C. Moreover, a single cell with the cathode shows a peak power density (PPD) of 1144.1 mW cm-2 at 750 °C, much higher than that of the cell with the MnCo2O4 cathode (456.2 mW cm-2). An enhanced stability of ∼120 h (0.8 A cm-2, 750 °C) is also achieved, related to the reduced thermal expansion coefficient (13.9 × 10-6 K-1). The improvement in ORR kinetics and stability can be attributed to the refinement of grains, the formation of heterointerfaces, and the enhancement of mechanical compatibility.
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Affiliation(s)
- Haocong Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Wenwen Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Junling Meng
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yongli Pei
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Xin Qiu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Fanzhi Meng
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Xiaojuan Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, Anhui, China
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Narayanaswamy V, Al-Omari IA, Kamzin AS, Issa B, Tekin HO, Khourshid H, Kumar H, Mallya A, Sambasivam S, Obaidat IM. Specific Absorption Rate Dependency on the Co 2+ Distribution and Magnetic Properties in Co xMn 1-xFe 2O 4 Nanoparticles. Nanomaterials (Basel) 2021; 11:1231. [PMID: 34066997 PMCID: PMC8151351 DOI: 10.3390/nano11051231] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/01/2021] [Accepted: 05/02/2021] [Indexed: 11/16/2022]
Abstract
Mixed ferrite nanoparticles with compositions CoxMn1-xFe2O4 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) were synthesized by a simple chemical co-precipitation method. The structure and morphology of the nanoparticles were obtained by X-ray diffraction (XRD), transmission electron microscope (TEM), Raman spectroscopy, and Mössbauer spectroscopy. The average crystallite sizes decreased with increasing x, starting with 34.9 ± 0.6 nm for MnFe2O4 (x = 0) and ending with 15.0 ± 0.3 nm for CoFe2O4 (x = 1.0). TEM images show an edge morphology with the majority of the particles having cubic geometry and wide size distributions. The mixed ferrite and CoFe2O4 nanoparticles have an inverse spinel structure indicated by the splitting of A1g peak at around 620 cm-1 in Raman spectra. The intensity ratios of the A1g(1) and A1g(2) peaks indicate significant redistribution of Co2+ and Fe3+ cations among tetrahedral and octahedral sites in the mixed ferrite nanoparticles. Magnetic hysterics loops show that all the particles possess significant remnant magnetization and coercivity at room temperature. The mass-normalized saturation magnetization is highest for the composition with x = 0.8 (67.63 emu/g), while CoFe2O4 has a value of 65.19 emu/g. The nanoparticles were PEG (poly ethylene glycol) coated and examined for the magneto thermic heating ability using alternating magnetic field. Heating profiles with frequencies of 333.45, 349.20, 390.15, 491.10, 634.45, and 765.95 kHz and 200, 250, 300, and 350 G field amplitudes were obtained. The composition with x = 0.2 (Co0.2Mn0.8Fe2O4) with saturation magnetization 57.41 emu/g shows the highest specific absorption rate (SAR) value of 190.61 W/g for 10 mg/mL water dispersions at a frequency of 765.95 kHz and 350 G field strength. The SAR values for the mixed ferrite and CoFe2O4 nanoparticles increase with increasing concentration of particle dispersions, whereas for MnFe2O4, nanoparticles decrease with increasing the concentration of particle dispersions. SARs obtained for Co0.2Mn0.8Fe2O4 and CoFe2O4 nanoparticles fixed in agar ferrogel dispersions at frequency of 765.95 kHz and 350 G field strength are 140.35 and 67.60 W/g, respectively. This study shows the importance of optimizing the occupancy of Co2+ among tetrahedral and octahedral sites of the spinel system, concentration of the magnetic nanoparticle dispersions, and viscosity of the surrounding medium on the magnetic properties and heating efficiencies.
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Affiliation(s)
- Venkatesha Narayanaswamy
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; (V.N.); (S.S.)
| | - Imaddin A. Al-Omari
- Department of Physics, Sultan Qaboos University, P.O. Box 36, Muscat PC 123, Oman;
| | | | - Bashar Issa
- Department of Medical Diagnostic Imaging, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; (B.I.); (H.O.T.)
| | - Huseyin O. Tekin
- Department of Medical Diagnostic Imaging, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; (B.I.); (H.O.T.)
| | - Hafsa Khourshid
- Department of Physics, College of Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates;
| | - Hemant Kumar
- Materials Engineering, Indian Institute of Science, Bangalore 560012, India; (H.K.); (A.M.)
| | - Ambresh Mallya
- Materials Engineering, Indian Institute of Science, Bangalore 560012, India; (H.K.); (A.M.)
| | - Sangaraju Sambasivam
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; (V.N.); (S.S.)
| | - Ihab M. Obaidat
- Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; (V.N.); (S.S.)
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Yadav E, Yadav P. Biofabricated zinc oxide nanoparticles impair cognitive function via modulating oxidative stress and acetylcholinesterase level in mice. Environ Toxicol 2021; 36:572-585. [PMID: 33247493 DOI: 10.1002/tox.23062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 11/15/2020] [Indexed: 06/12/2023]
Abstract
Current work was designed to explore the effect of ZnO nanoparticles (ZnONP) biofabricated by using Trianthema portulacastrum (TP) leaves extract on mice brain hippocampus. ZnO nanoparticles of TP leaves (ZnOTP) were synthesized by co-precipitation method and further characterized by using various techniques such as UV-Vis spectrophotometer, Field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared (FTIR), and Energy Dispersive X-ray (EDX). ZnOTP were evaluated for in vitro antioxidant activity, in vivo behavior models (for assessment of cognitive ability), acetylcholinesterase (AChE) activity along with other neurotransmitters content determination, estimation of various oxidative stress parameters and analysis of zinc content in the brain as well as plasma. Histopathological evaluation of the brain hippocampus of each group was performed to corroborate the statistical results. Spherical ZnOTP of 10 to 20 nm size embedded with different phytoconstituents of TP was confirmed. Results of our study revealed a significant memory deficit in mice treated with ZnOTP. Neuronal degeneration was also observed via a significant increase in AChE activity and oxidative stress levels in the brain of mice administered with ZnOTP. Exposure of ZnOTP was also found responsible for modulation of neurotransmission in hippocampus area. Further, ZnOTP disturbed the zinc homeostasis in hippocampus via elevation of zinc content in brain as well as plasma. Histopathology of hippocampus supported the damaging impact of ZnOTP by an increase in vacuolated cytoplasm and focal gliosis in groups treated with ZnOTP. Results demonstrated the neurotoxic effect of ZnOTP on brain hippocampus via cognitive impairment by alteration of neurotransmitter level, zinc content and oxidative stress.
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Affiliation(s)
- Ekta Yadav
- Department of Pharmaceutical Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences (SHUATS), Prayagraj, India
| | - Pankajkumar Yadav
- Department of Pharmaceutical Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences (SHUATS), Prayagraj, India
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Le DT, Ju H. Solution Synthesis of Cubic Spinel Mn-Ni-Cu-O Thermistor Powder. Materials (Basel) 2021; 14:1389. [PMID: 33809334 DOI: 10.3390/ma14061389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/04/2021] [Accepted: 03/09/2021] [Indexed: 12/02/2022]
Abstract
Toward the development of NTCR thermistors, nanocrystalline Mn–Ni–Cu–O powder was synthesized from a mixed chloride aqueous solution by a simple co-precipitation method.The introduction of an oxidizing agent (H2O2) into the solution led to the partial oxidation of Mn2+ ions into Mn3+ ions, which enabled the collected powder to be well crystallized at 650 °C. Such a low calcining temperature resulted in fine particles with a mean size of 60 nm, which significantly promoted densification of the resulting ceramics. As a result, a dense and homogenous microstructure with a relative density up to 97.2% was achieved for pellets sintered at 1100 °C. Furthermore, these sintered ceramics exhibited a room temperature resistivity (ρ25) of 67 Ω·cmand a thermistor constant (B25/85) of 2843 K, which make them suitable for use in industrial thermistors. In addition, electrical stability was greatly improved when the ceramics were prepared by a new two-step sintering method. The results suggest that the co-precipitation route with the introduction of H2O2 is suitable for the fabrication of cubic spinel thermistor nanopowders.
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Silva LAL, Silva AAL, Rios MAS, Brito MP, Araújo AR, Silva DA, Peña-Garcia RR, Silva-Filho EC, Magalhães JL, Matos JME, Osajima JA, Triboni ER. Insights into the Antimicrobial Activity of Hydrated Cobaltmolybdate Doped with Copper. Molecules 2021; 26:molecules26051267. [PMID: 33652788 PMCID: PMC7956662 DOI: 10.3390/molecules26051267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/09/2021] [Accepted: 02/12/2021] [Indexed: 01/04/2023] Open
Abstract
Molybdates are biocidal materials that can be useful in coating surfaces that are susceptible to contamination and the spread of microorganisms. The aim of this work was to investigate the effects of copper doping of hydrated cobalt molybdate, synthesized by the co-precipitation method, on its antibacterial activity and to elucidate the structural and morphological changes caused by the dopant in the material. The synthesized materials were characterized by PXRD, Fourier Transformed Infrared (FTIR), thermogravimetric analysis/differential scanning calorimetry (TG/DSC), and SEM-Energy Dispersive Spectroscopy (SEM-EDS). The antibacterial response of the materials was verified using the Minimum Inhibitory Concentration (MIC) employing the broth microdilution method. The size of the CoMoO4·1.03H2O microparticles gradually increased as the percentage of copper increased, decreasing the energy that is needed to promote the transition from the hydrated to the beta phase and changing the color of material. CoMoO4·1.03H2O obtained better bactericidal performance against the tested strains of Staphylococcus aureus (gram-positive) than Escherichia coli (gram-negative). However, an interesting point was that the use of copper as a doping agent for hydrated cobalt molybdate caused an increase of MIC value in the presence of E. coli and S. aureus strains. The study demonstrates the need for caution in the use of copper as a doping material in biocidal matrices, such as cobalt molybdate.
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Affiliation(s)
- Layane A. L. Silva
- Interdisciplinary Laboratory Advanced Materials, Federal University of Piauí, Teresina 64049-550, Brazil; (L.A.L.S.); (R.R.P.-G.); (E.C.S.-F.); (J.M.E.M.)
| | - André A. L. Silva
- Supramolecular Self-Assembly Laboratory, Federal University of Piauí, Teresina 64049-550, Brazil; (A.A.L.S.); (J.L.M.)
| | - Maria A. S. Rios
- Group of Technological Innovations and Chemical Specialties, Federal University of Ceará, Fortaleza 60455-760, Brazil;
| | - Manoel P. Brito
- Biodiversity and Biotechnology Research Center, Federal University of Delta of Parnaíba, Parnaíba 64202-020, Brazil; (M.P.B.); (A.R.A.); (D.A.S.)
| | - Alyne R. Araújo
- Biodiversity and Biotechnology Research Center, Federal University of Delta of Parnaíba, Parnaíba 64202-020, Brazil; (M.P.B.); (A.R.A.); (D.A.S.)
| | - Durcilene A. Silva
- Biodiversity and Biotechnology Research Center, Federal University of Delta of Parnaíba, Parnaíba 64202-020, Brazil; (M.P.B.); (A.R.A.); (D.A.S.)
| | - Ramón R. Peña-Garcia
- Interdisciplinary Laboratory Advanced Materials, Federal University of Piauí, Teresina 64049-550, Brazil; (L.A.L.S.); (R.R.P.-G.); (E.C.S.-F.); (J.M.E.M.)
- Academic Unit of Cabo de Santo Agostinho, Federal Rural University of Pernambuco, Cabo de Santo Agostinho 52171-900, Brazil
| | - Edson C. Silva-Filho
- Interdisciplinary Laboratory Advanced Materials, Federal University of Piauí, Teresina 64049-550, Brazil; (L.A.L.S.); (R.R.P.-G.); (E.C.S.-F.); (J.M.E.M.)
| | - Janildo L. Magalhães
- Supramolecular Self-Assembly Laboratory, Federal University of Piauí, Teresina 64049-550, Brazil; (A.A.L.S.); (J.L.M.)
| | - José M. E. Matos
- Interdisciplinary Laboratory Advanced Materials, Federal University of Piauí, Teresina 64049-550, Brazil; (L.A.L.S.); (R.R.P.-G.); (E.C.S.-F.); (J.M.E.M.)
| | - Josy A. Osajima
- Interdisciplinary Laboratory Advanced Materials, Federal University of Piauí, Teresina 64049-550, Brazil; (L.A.L.S.); (R.R.P.-G.); (E.C.S.-F.); (J.M.E.M.)
- Correspondence: (J.A.O.); (E.R.T.); Tel.: +55-(89)-3562-2247 (J.A.O.); +55-(12)-3159-5328 (E.R.T.)
| | - Eduardo R. Triboni
- Nanotechnology and Process Engineering-NEP, University of São Paulo, Lorena 12602-810, Brazil
- Correspondence: (J.A.O.); (E.R.T.); Tel.: +55-(89)-3562-2247 (J.A.O.); +55-(12)-3159-5328 (E.R.T.)
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Salvador M, Gutiérrez G, Noriega S, Moyano A, Blanco-López MC, Matos M. Microemulsion Synthesis of Superparamagnetic Nanoparticles for Bioapplications. Int J Mol Sci 2021; 22:E427. [PMID: 33406682 DOI: 10.3390/ijms22010427] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/28/2020] [Accepted: 12/30/2020] [Indexed: 12/13/2022] Open
Abstract
Superparamagnetic nanoparticles have seen increased potential in medical and environmental applications. Their preparation is traditionally made by the coprecipitation method, with limited control over the particle size distribution. Microemulsion methods could be advantageous due to the efficient control of the size, shape, and composition of the nanoparticles obtained. Water-in-oil (W/O) microemulsions consist of aqueous microdomains dispersed in a continuous oil phase, stabilized by surfactant molecules. These work as nanoreactors where the synthesis of the desired nanoparticles takes place through a co-precipitation chemical reaction. In this work, superparamagnetic magnetite nanoparticles with average diameters between 5.4 and 7.2 nm and large monodispersity have been synthesized through precipitation in a W/O microemulsion, with Cetyl Trimethyl Ammonium Bromide (CTAB) as a main surfactant, 1-butanol as a cosurfactant, and with 1-hexanol as the continuous oily phase. The optimization of the corresponding washing protocol has also been established since a strict control is required when using these materials for bioapplications. Their applicability in those has been proved by their encapsulation in liposomes, being tested as signal enhancers for lateral flow immunoassays by using the affinity neutravidin-biotin model system. Due to their magnetic behaviour, they were also tested for magnetic separation. These novel materials have been found to be useful for analytical applications requiring high sensitivity and the removal of interferences.
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Fomekong RL, Kelm K, Saruhan B. High-Temperature Hydrogen Sensing Performance of Ni-Doped TiO 2 Prepared by Co-Precipitation Method. Sensors (Basel) 2020; 20:E5992. [PMID: 33105867 PMCID: PMC7660179 DOI: 10.3390/s20215992] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/08/2020] [Accepted: 10/19/2020] [Indexed: 11/17/2022]
Abstract
This work deals with the substantially high-temperature hydrogen sensors required by combustion and processing technologies. It reports the synthesis of undoped and Ni-doped TiO2 (with 0, 0.5, 1 and 2 mol.% of Ni) nanoparticles by a co-precipitation method and the obtained characteristics applicable for this purpose. The effect of nickel doping on the morphological variation, as well as on the phase transition from anatase to rutile, of TiO2 was investigated by scanning electron microscopy, X-ray diffraction and Raman spectroscopy. The resistive sensors prepared with these powders were tested toward H2 at 600 °C. The results indicate that 0.5% Ni-doped TiO2 with almost equal amounts of anatase and rutile shows the best H2 sensor response (ΔR/R0 = 72%), response rate and selectivity. The significant improvement of the sensing performance of 0.5% Ni-doped TiO2 is mainly attributed to the formation of the highest number of n-n junctions present between anatase and rutile, which influence the quantity of adsorbed oxygen (i.e., the active reaction site) on the surface and the conductivity of the material.
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Affiliation(s)
- Roussin Lontio Fomekong
- Higher Teacher Training College, University of Yaounde I, Yaounde P.O. BOX 47, Cameroon;
- German Aerospace Center (DLR), Institute of Materials Research, 51147 Cologne, Germany;
| | - Klemens Kelm
- German Aerospace Center (DLR), Institute of Materials Research, 51147 Cologne, Germany;
| | - Bilge Saruhan
- German Aerospace Center (DLR), Institute of Materials Research, 51147 Cologne, Germany;
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