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Cai T, Ge-Zhang S, Zhang C, Mu P, Cui J. Excellent Antibacterial Properties of Silver/Silica-Chitosan/Polyvinyl Alcohol Transparent Film. Int J Mol Sci 2024; 25:8125. [PMID: 39125695 PMCID: PMC11311888 DOI: 10.3390/ijms25158125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2024] [Revised: 07/22/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
Transparent films with excellent antibacterial properties and strong mechanical properties are highly sought after in packaging applications. In this study, Ag/SiO2 nanoparticles were introduced into a mixed solution of chitosan (CS) and polyvinyl alcohol (PVA) and a Ag/SiO2-CS-PVA transparent film was developed. The excellent properties of the film were confirmed by light transmittance, water contact angle tests and tensile tests. In addition, for the antibacterial test, the antibacterial properties of the sample against Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) were explored, and the average size of the bacteriostatic circle was measured by the cross method. The final results show that Ag/SiO2-CS-PVA transparent film has the advantages of good antibacterial properties, high transparency and high mechanical strength.
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Affiliation(s)
- Taoyang Cai
- College of Science, Northeast Forestry University, Harbin 150040, China; (T.C.)
- Aulin College, Northeast Forestry University, Harbin 150040, China
| | - Shangjie Ge-Zhang
- College of Science, Northeast Forestry University, Harbin 150040, China; (T.C.)
| | - Chang Zhang
- College of Science, Northeast Forestry University, Harbin 150040, China; (T.C.)
| | - Pingxuan Mu
- College of Science, Northeast Forestry University, Harbin 150040, China; (T.C.)
| | - Jingang Cui
- College of Science, Northeast Forestry University, Harbin 150040, China; (T.C.)
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2
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Thai DV, Pham VB, Sai CD, Nguyen THG, Tran TD, Tran TH, Nguyen TT, Nguyen TD, Bui HV. Synthesis of SiO 2@Ag Nanocomposite for Investigating Metal-Enhanced Fluorescence and Surface-Enhanced Raman Spectroscopy. J Fluoresc 2024:10.1007/s10895-024-03584-1. [PMID: 38280054 DOI: 10.1007/s10895-024-03584-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/09/2024] [Indexed: 01/29/2024]
Abstract
SiO2@Ag nanocomposite (NC) has been synthesized by the chemical reduction and Stӧber method for Metal-enhanced fluorescence (MEF) of Rhodmine 6G (R6G) and Surface-enhanced Raman spectroscopy (SERS) of Malachite green (MG). As-synthesized SiO2@Ag NC indicated SiO2 nanosphere (NS) and Ag nanoparticle (NP) morphologies. The SiO2@Ag NC was high quality with a well-defined crystallite phase with average sizes of 24 nm and 132 nm for Ag NP and SiO2 NC, respectively. By using SiO2@Ag NC, the photoluminescence (PL) intensity of the R6G (at 59.17 ppm) was increased approximately 133 times. The SERS of the MG (at 1.0 ppm) with SiO2@Ag NC as substrate clearly observed vibrational modes in MG dye at 798, 916, 1172, 1394, and 1616 cm-1. As a result, the SERS enhancement factor (EFSERS) at 1172 cm-1 obtained 6.3 × 106. This initial study points to the potential of SiO2@Ag NC as a promising material for MEF and SERS substrates to detect dyes at low concentrations.
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Affiliation(s)
- Dang Van Thai
- Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, Vietnam
- Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam
| | - Van Ben Pham
- VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam
| | - Cong Doanh Sai
- VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam
| | | | - Trong Duc Tran
- VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam
| | - Thi Ha Tran
- Hanoi University of Mining and Geology, 18 Pho Vien, Bac Tu Liem, Hanoi, Vietnam
| | - Tien-Thanh Nguyen
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Tien Dai Nguyen
- Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam
| | - Hong Van Bui
- VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam.
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3
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Khan M, Ahmad B, Hayat K, Ullah F, Sfina N, Elhadi M, Khan AA, Husain M, Rahman N. Synthesis of ZnO and PEG-ZnO nanoparticles (NPs) with controlled size for biological evaluation. RSC Adv 2024; 14:2402-2409. [PMID: 38213969 PMCID: PMC10783289 DOI: 10.1039/d3ra07441b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/03/2024] [Indexed: 01/13/2024] Open
Abstract
The objective of this research was to produce the smallest possible ZnO nanoparticles through an adapted wet chemical process and subsequently, to fabricate a core-shell structure utilizing polyethylene glycol (PEG) as the shell component. The synthesis, size, and shape of the NPs were confirmed using advanced techniques. The resulting clustered NPs were round and had a size of 9.8 nm. Both plain and core-shell NPs were tested for their antibacterial properties against multi-drug resistant bacteria strains (E. cloacae, E. amnigenus, S. flexneri, S. odorifacae, Citrobacter, and E. coli), with concentrations of 500, 1000, and 1500 μg ml-1 used for testing. Both types of NPs demonstrated antibacterial activity against the tested pathogens, with the core-shell NPs being more effective. The synthesized NPs were biocompatible with human red blood cells, with a low level of hemolysis observed. The biocompatibility of the core-shell NPs was significantly enhanced by the presence of the PEG added as the shell. In addition, their effectiveness as photosensitizers for cancer treatment via photodynamic therapy (PDT) was evaluated. MTT assay was used to evaluate the cytotoxicity of ZnO and PEG-ZnO, and the results showed that these NPs were able to generate ROS inside tumor cells upon irradiation, leading to apoptosis and cell death, making them a promising candidate for PDT.
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Affiliation(s)
- Mahnoor Khan
- Centre of Biotechnology and Microbiology, University of Peshawar KP 25120 Pakistan
| | - Bashir Ahmad
- Centre of Biotechnology and Microbiology, University of Peshawar KP 25120 Pakistan
| | - Khizar Hayat
- Department of Physics, Abdul Wali Khan University Mardan KP 23200 Pakistan
| | - Fahad Ullah
- Northwest School of Medicine Peshawar KP 25120 Pakistan
| | - Nourreddine Sfina
- Department of Physics, College of Sciences and Arts in Mahayel Asir, King Khalid University Abha Saudi Arabia
| | - Muawya Elhadi
- Department of Physics, Faculty of Science and Humanities, Shaqra University Ad-Dawadimi 11911, P. O. Box 1040 Saudi Arabia
| | - Abid Ali Khan
- Centre of Biotechnology and Microbiology, University of Peshawar KP 25120 Pakistan
- Department of Chemical Sciences, University of Lakki Marwat KP 28420 Pakistan
| | - Mudasser Husain
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University Beijing 100871 P. R. China
| | - Nasir Rahman
- Department of Physics, University of Lakki Marwat Lakki Marwat 28420 KPK Pakistan
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4
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G F N, V V, M G, S M, M P. Surface enhanced Raman scattering investigation of tecovirimat on silver, gold and platinum loaded silica nanocomposites: Theoretical analysis (DFT) and molecular modeling. Heliyon 2023; 9:e21122. [PMID: 37916120 PMCID: PMC10616345 DOI: 10.1016/j.heliyon.2023.e21122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/16/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
As of today, there have been 612 million confirmed cases of coronavirus disease (COVID-19) around the world, with over 6 million fatalities. Tecovirimat (TPOXX) is an anti-viral drug, and it was the first drug approved for the treatment of anti-pox virus in the US. However, the effectiveness of this drug against COVID-19 has not yet been explored. Since TPOXX is an anti-viral drug, an attempt has been made to determine its ability to act as a COVID inhibitor. Recent medical advances have resulted in the development of nano cage-based drug delivery. Drug delivery clusters based on nano cages have recently been used in the medical industry. As such, we used DFT coupled to the B3LYP/LANL2DZ basis set to study the adsorption behavior of the anti-viral drug TPOXX on Au/Ag/Pt⋯SiO2loaded silica nanocomposites. In order to identify the active site of the molecule, we have used the frontier molecular orbital (FMO) theory of molecular electrostatic potential (MEP). The compound and its complexes obey Lipinski's rule of five and have good drug-likeness properties based on the bioactivity evaluation. The biological properties of organic molecules and nano metal clusters were compared. The TPOXX with its nanocomposites was also studied in terms of Electron Localization Function (ELF) and Localized Orbital Locator (LOL). Molecular docking was performed for both pure molecule and its silica nanocomposites-doped derivatives with the chosen proteins to discuss the protein-ligand binding properties. These results could be more helpful in designing the drug and exploring its application for the inhibition of SARS-CoV-2.
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Affiliation(s)
- Nivetha G F
- Department of Physics, Periyar University Centre for Post Graduate and Research Studies, Dharmapuri, 635205, India
| | - Vetrivelan V
- Department of Physics, Government College of Engineering, Srirangam, Tiruchirappalli, 620012, Tamilnadu, India
| | - Govindammal M
- Department of Physics, Government Arts College, Dharmapuri, 636705, India
| | - Muthu S
- Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, 604407, Tamilnadu, India
| | - Prasath M
- Department of Physics, Periyar University Centre for Post Graduate and Research Studies, Dharmapuri, 635205, India
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Halder S, Paul M, Dyagala S, Aggrawal R, Aswal VK, Biswas S, Saha SK. Role of Gemini Surfactants with Variable Spacers and SiO 2 Nanoparticles in ct-DNA Compaction and Applications toward In Vitro/ In Vivo Gene Delivery. ACS APPLIED BIO MATERIALS 2023. [PMID: 37277159 DOI: 10.1021/acsabm.3c00256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Compaction of calf thymus DNA (ct-DNA) by two cationic gemini surfactants, 12-4-12 and 12-8-12, in the absence and presence of negatively charged SiO2 nanoparticles (NPs) (∼100 nm) has been explored using various techniques. 12-8-12 having a longer hydrophobic spacer induces a greater extent of ct-DNA compaction than 12-4-12, which becomes more efficient with SiO2 NPs. While 50% ct-DNA compaction in the presence of SiO2 NPs occurs at ∼77 nM of 12-8-12 and ∼130 nM of 12-4-12, but a conventional counterpart surfactant, DTAB, does it at its concentration as high as ∼7 μM. Time-resolved fluorescence anisotropy measurements show changes in the rotational dynamics of a fluorescent probe, DAPI, and helix segments in the condensed DNA. Fluorescence lifetime data and ethidium bromide exclusion assays reveal the binding sites of surfactants to ct-DNA. 12-8-12 with SiO2 NPs has shown the highest cell viability (≥90%) and least cell death in the human embryonic kidney (HEK) 293 cell lines in contrast to the cell viability of ≤80% for DTAB. These results show that 12-8-12 with SiO2 NPs has the highest time and dose-dependent cytotoxicity compared to 12-8-12 and 12-4-12 in the murine breast cancer 4T1 cell line. Fluorescence microscopy and flow cytometry are performed for in vitro cellular uptake of YOYO-1-labeled ct-DNA with surfactants and SiO2 NPs using 4T1 cells after 3 and 6 h incubations. The in vivo tumor accumulation studies are carried out using a real-time in vivo imaging system after intravenous injection of the samples into 4T1 tumor-bearing mice. 12-8-12 with SiO2 has delivered the highest amount of ct-DNA in cells and tumors in a time-dependent manner. Thus, the application of a gemini surfactant with a hydrophobic spacer and SiO2 NPs in compacting and delivering ct-DNA to the tumor is proven, warranting its further exploration in nucleic acid therapy for cancer treatment.
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Affiliation(s)
- Sayantan Halder
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Milan Paul
- Department of Pharmacy, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Shalini Dyagala
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Rishika Aggrawal
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, Maharashtra 400085, India
| | - Swati Biswas
- Department of Pharmacy, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Subit K Saha
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
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6
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Asnaz OH, Drewes J, Elis M, Strunskus T, Greiner F, Polonskyi O, Faupel F, Kienle L, Vahl A, Benedikt J. A novel method for the synthesis of core-shell nanoparticles for functional applications based on long-term confinement in a radio frequency plasma. NANOSCALE ADVANCES 2023; 5:1115-1123. [PMID: 36798508 PMCID: PMC9926887 DOI: 10.1039/d2na00806h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/19/2022] [Indexed: 06/18/2023]
Abstract
A novel combined setup of a Haberland type gas aggregation source and a secondary radio frequency discharge is used to generate, confine, and coat nanoparticles over much longer time scales than traditional in-flight treatment. The process is precisely monitored using localized surface plasmon resonance and Fourier-transform infrared spectroscopy as in situ diagnostics. They indicate that both untreated and treated particles can be confined for extended time periods (at least one hour) with minimal losses. During the entire confinement time, the particle sizes do not show considerable alterations, enabling multiple well-defined modifications of the seed nanoparticles in this synthesis approach. The approach is demonstrated by generating Ag@SiO2 nanoparticles with a well-defined surface coating. The in situ diagnostics provide insights into the growth kinetics of the applied coating and are linked to the coating properties by using ex situ transmission electron microscopy and energy dispersive X-ray spectroscopy. Surface coating is shown to occur in two phases: first, singular seeds appear on the particle surface which then grow to cover the entire particle surface over 3 to 5 minutes. Afterwards, deposition occurs via surface growth which coincides with lower deposition rates. Our setup offers full control for various treatment options, which is demonstrated by coating the nanoparticles with a SiO2 layer followed by the etching of the part of the applied coating using hydrogen. Thus, complex multi-step nanofabrication, e.g., using different monomers, as well as very large coating thicknesses is possible.
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Affiliation(s)
- Oguz Han Asnaz
- Institute of Experimental and Applied Physics, Kiel University Leibnizstr. 19 D-24098 Kiel Germany
| | - Jonas Drewes
- Chair for Multicomponent Materials, Institute of Materials Science, Kiel University Kaiserstr. 2 D-24143 Kiel Germany
| | - Marie Elis
- Chair for Synthesis and Real Structure, Institute of Materials Science, Kiel University Kaiserstr. 2 D-24143 Kiel Germany
| | - Thomas Strunskus
- Chair for Multicomponent Materials, Institute of Materials Science, Kiel University Kaiserstr. 2 D-24143 Kiel Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University Christian-Albrechts-Platz 4 D-24118 Kiel Germany
| | - Franko Greiner
- Institute of Experimental and Applied Physics, Kiel University Leibnizstr. 19 D-24098 Kiel Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University Christian-Albrechts-Platz 4 D-24118 Kiel Germany
| | - Oleksandr Polonskyi
- Chair for Multicomponent Materials, Institute of Materials Science, Kiel University Kaiserstr. 2 D-24143 Kiel Germany
| | - Franz Faupel
- Chair for Multicomponent Materials, Institute of Materials Science, Kiel University Kaiserstr. 2 D-24143 Kiel Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University Christian-Albrechts-Platz 4 D-24118 Kiel Germany
| | - Lorenz Kienle
- Chair for Synthesis and Real Structure, Institute of Materials Science, Kiel University Kaiserstr. 2 D-24143 Kiel Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University Christian-Albrechts-Platz 4 D-24118 Kiel Germany
| | - Alexander Vahl
- Chair for Multicomponent Materials, Institute of Materials Science, Kiel University Kaiserstr. 2 D-24143 Kiel Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University Christian-Albrechts-Platz 4 D-24118 Kiel Germany
| | - Jan Benedikt
- Institute of Experimental and Applied Physics, Kiel University Leibnizstr. 19 D-24098 Kiel Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Kiel University Christian-Albrechts-Platz 4 D-24118 Kiel Germany
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7
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Vetrivelan V, Sakthivel S, Muthu S, Al-Saadi AA. Non-covalent interaction, adsorption characteristics and solvent effect of procainamide anti-arrhythmias drug on silver and gold loaded silica surfaces: SERS spectroscopy, density functional theory and molecular docking investigations †. RSC Adv 2023; 13:9539-9554. [PMID: 36968042 PMCID: PMC10035408 DOI: 10.1039/d3ra00514c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/01/2023] [Indexed: 03/25/2023] Open
Abstract
First-principle calculations were systematically carried out to explore the structural and electronic properties of the non-covalent interaction of procainamide (PA) anti-arrhythmias drug molecules on silver-loaded and gold-loaded silica nanostructures. Computed adsorption energies presented a higher affinity of PA towards the Ag–SiO2 as compared with Au–SiO2 surfaces. The non-covalent interaction analysis revealed a weak van der Waals type of forces and hydrogen bonding, associated with a noticeable repulsive steric interaction. It was conceived that silver and gold decorated silica can be used for drug administration in biological systems due to the fact that their frontier molecular orbital energy levels were considerably altered upon absorption, decreasing the pertinent energy gaps. Moreover, the electronic spectra of PA⋯Ag–SiO2 and PA⋯Au–SiO2 structures investigated in different solvents display a notable blue shift, suggesting that noble metal-loaded silica can be effective in the context of drug delivery systems. Therefore, silver- and gold-decorated silica of three possible drug adsorption scenarios was fully analyzed to realize the associated bioactivity and drug likeness. Theoretical findings suggest that Ag- and Au–SiO2 nanocomposites can be considered potential drug delivery platforms for procainamide in medication protocols. The structural and electronic properties of the non-covalent interaction of procainamide (PA) anti-arrhythmias drug molecules on silver-loaded and gold-loaded silica nanostructures were explored using first-principle calculations.![]()
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Affiliation(s)
- V. Vetrivelan
- Department of Physics, Thanthai Periyar Government Institute of TechnologyVellore 632002India
| | - S. Sakthivel
- Department of Physics, Panimalar Engineering CollegeChennai600 123TamilnaduIndia
| | - S. Muthu
- Department of Physics, Arignar Anna Govt. Arts CollegeCheyyar 604 407TamilnaduIndia
| | - Abdulaziz A. Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum & MineralsDhahran 31261Saudi Arabia
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Juneja S, Zhang B, Nujhat N, Wang AX. Quantitative Sensing of Domoic Acid from Shellfish Using Biological Photonic Crystal Enhanced SERS Substrates. Molecules 2022; 27:8364. [PMID: 36500455 PMCID: PMC9736055 DOI: 10.3390/molecules27238364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022] Open
Abstract
Frequent monitoring of sea food, especially shellfish samples, for the presence of biotoxins serves not only as a valuable strategy to mitigate adulteration associated health risks, but could also be used to develop predictive models to understand algal explosion and toxin trends. Periodic toxin assessment is often restricted due to poor sensitivity, multifarious cleaning/extraction protocols and high operational costs of conventional detection methods. Through this work, a simplistic approach to quantitatively assess the presence of a representative marine neurotoxin, Domoic acid (DA), from spiked water and crab meat samples is presented. DA sensing was performed based on surface-enhanced Raman scattering (SERS) using silver nanoparticle enriched diatomaceous earth—a biological photonic crystal material in nature. Distinctive optical features of the quasi-ordered pore patterns in diatom skeleton with sporadic yet uniform functionalization of silver nanoparticles act as excellent SERS substrates with improved DA signals. Different concentrations of DA were tested on the substrates with the lowest detectable concentration being 1 ppm that falls well below the regulatory DA levels in seafood (>20 ppm). All the measurements were rapid and were performed within a measurement time of 1 min. Utilizing the measurement results, a standard calibration curve between SERS signal intensity and DA concentration was developed. The calibration curve was later utilized to predict the DA concentration from spiked Dungeness crab meat samples. SERS based quantitative assessment was further complemented with principal component analysis and partial least square regression studies. The tested methodology aims to bring forth a sensitive yet simple, economical and an extraction free routine to assess biotoxin presence in sea food samples onsite.
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Affiliation(s)
- Subhavna Juneja
- School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA
- Department of Electrical and Computer Engineering, Baylor University, Waco, TX 76798, USA
| | - Boxin Zhang
- School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA
| | - Nabila Nujhat
- School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA
| | - Alan X. Wang
- School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA
- Department of Electrical and Computer Engineering, Baylor University, Waco, TX 76798, USA
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9
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Chen X, Wang F, Zhao Y, Wu P, Gao L, Ouyang C, Yang Y, Mu X. Surface Plasmon Effect Dominated High-Performance Triboelectric Nanogenerator for Traditional Chinese Medicine Acupuncture. RESEARCH (WASHINGTON, D.C.) 2022; 2022:9765634. [PMID: 36299448 PMCID: PMC9575470 DOI: 10.34133/2022/9765634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/18/2022] [Indexed: 11/23/2022]
Abstract
Available, effectively converting low-frequency vibration into available electricity, triboelectric nanogenerator (TENG) is always research hot nowadays. However, the enhancing effect of the existing methods for the output have all sorts of drawbacks, i.e., low efficiency and unstable, and its practical applications still need to be further explored. Here, leveraging core-shell nanoparticles Ag@SiO2 doping into tribo-materials generates the surface plasmon effect to boost the output performance of the TENG. On one hand, the shell alleviated the seepage effect from conventional nanoparticles; on the other hand, the surface plasmon effect enabled the core-shell nanoparticles to further boost the output performance of TENG. We circumvent the limitations and present a TENG whose output power density can be up to 4.375 mW/cm2. Points is that this article novelty investigate the high-performance TENG applicating for traditional Chinese medicine and develop a pratical self-powered acupuncture system. This technology enables rapid, routine regulation of human health at any age, which has potential applications in nearly any setting across healthcare platforms alike.
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Affiliation(s)
- Xin Chen
- Key Laboratory of Optoelectronic Technology & Systems Ministry of Education, International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400044, China
- Institute of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Fayang Wang
- Key Laboratory of Optoelectronic Technology & Systems Ministry of Education, International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400044, China
| | - Yanjun Zhao
- Key Laboratory of Optoelectronic Technology & Systems Ministry of Education, International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400044, China
| | - Pengfan Wu
- Key Laboratory of Optoelectronic Technology & Systems Ministry of Education, International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400044, China
| | - Lingxiao Gao
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Chun Ouyang
- Hospital of Chongqing University, Chongqing 400044, China
| | - Ya Yang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
| | - Xiaojing Mu
- Key Laboratory of Optoelectronic Technology & Systems Ministry of Education, International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400044, China
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10
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Mechanical, antibacterial, and non-cytotoxic performance of polypropylene nanocomposites reinforced with sTiO2 deposited with AgNPs mediated by quercetin biomolecule. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04375-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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11
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Zaki AG, Hasanien YA, El-Sayyad GS. Novel fabrication of SiO 2/Ag nanocomposite by gamma irradiated Fusarium oxysporum to combat Ralstonia solanacearum. AMB Express 2022; 12:25. [PMID: 35229228 PMCID: PMC8885861 DOI: 10.1186/s13568-022-01372-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 12/11/2022] Open
Abstract
The bacterial wilt is a global destructive plant disease that initiated by the phytopathogenic Ralstonia solanacearum. This study display a novel biofabrication of silica/silver nanocomposite using Fusarium oxysporum-fermented rice husk (RH) under solid state fermentation (SSF). The biofabricated nanocomposite was characterized by XRD, UV-Vis. spectroscopy, DLS, SEM, EDX elemental mapping, and TEM analyses as well as investigated for anti-R. solanacearum activity. Response surface methodology was also processed for optimizing the biofabrication process and improving the anti-bacterial activity of the fabricated nanocomposite. Maximum suppression zone of 29.5 mm against R. solanacearum was reached at optimum RH content of 6.0 g, AgNO3 concentration of 2.50 mM, reaction pH of 6.3, and reaction time of 2 days. The anti-R. solanacearum activity of the fabricated nanocomposite was further improved by exposing the F. oxysporum strain to a gamma irradiation dose of 200 Gy. In conclusion, RH recycling under SSF by F. oxysporum could provide an innovative, facile, non-expensive, and green approach for fabricating SiO2/Ag nanocomposite that could be applied efficiently as an eco-friendly antibacterial agent to combat R. solanacearum in agricultural applications. Moreover, the developed method could serve as a significant platform for the designing of new nanostructures for broad applications.
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Affiliation(s)
- Amira G. Zaki
- Plant Research Department, Nuclear Research Center (NRC), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Yasmeen A. Hasanien
- Plant Research Department, Nuclear Research Center (NRC), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Gharieb S. El-Sayyad
- Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
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12
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Pandey M, Singh M, Wasnik K, Gupta S, Patra S, Gupta PS, Pareek D, Chaitanya NSN, Maity S, Reddy ABM, Tilak R, Paik P. Targeted and Enhanced Antimicrobial Inhibition of Mesoporous ZnO-Ag 2O/Ag, ZnO-CuO, and ZnO-SnO 2 Composite Nanoparticles. ACS OMEGA 2021; 6:31615-31631. [PMID: 34869986 PMCID: PMC8637601 DOI: 10.1021/acsomega.1c04139] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/08/2021] [Indexed: 05/04/2023]
Abstract
In this work, mesoporous (pore size below 4 nm) composite nanoparticles of ZnO-Ag2O/Ag, ZnO-CuO, and ZnO-SnO2 of size d ≤ 10 nm (dia.) have been synthesized through the in situ solvochemical reduction method using NaBH4. These composite nanoparticles exhibited excellent killing efficacy against Gram-positive/negative bacterial and fungal strains even at a very low dose of 0.010 μg/mL. Additionally, by applying the in silico docking approach, the nanoparticles and microorganism-specific targeted proteins and their interactions have been identified to explain the best anti-bacterial/anti-fungal activities of these composites. For this purpose, the virulence and resistance causing target proteins such as PqsR, RstA, FosA, and Hsp90 of Pseudomonas aeruginosa, Acinetobacter baumannii, Klebsiella pneumoniae, and Candida albicans have been identified to find out the best inhibitory action mechanisms involved. From the in vitro study, it is revealed that all the composite nanoparticle types used here can act as potent antimicrobial components. All the composite nanoparticles have exhibited excellent inhibition against the microorganisms compared to their constituent single metal or metal oxide nanoparticles. Among the nanoparticle types, the ZnO-Ag2O/Ag composite nanoparticles exhibited the best inhibition activity compared to the other reported nanoparticles. The microorganisms which are associated with severe infections lead to the multidrug resistance and have become a huge concern in the healthcare sector. Conventional organic antibiotics are less stable at a higher temperature. Therefore, based on the current demands, this work has been focused on designing inorganic antibiotics which possess stability even under harsh conditions. In this direction, our developed composite nanoparticles were explored for potential uses in the healthcare technology, and they may solve many problems in global emergency and epidemics caused by the microorganisms.
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Affiliation(s)
- Monica Pandey
- School
of Engineering Sciences and Technology, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Monika Singh
- School
of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Kirti Wasnik
- School
of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Shubhra Gupta
- School
of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Sukanya Patra
- School
of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Prem Shankar Gupta
- School
of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Divya Pareek
- School
of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Nyshadham Sai Naga Chaitanya
- Department
of Animal Science, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Somedutta Maity
- School
of Engineering Sciences and Technology, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Aramati B. M. Reddy
- Department
of Animal Science, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Ragini Tilak
- Institute
of Medical Sciences, Banaras Hindu University
(BHU), Varanasi, Uttar Pradesh 221005, India
| | - Pradip Paik
- School
of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh 221005, India
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Kunthom R, Cheepborisutikul SJ, Ogawa M. Well-Defined Hexagonal Platy Particles of Brucite, Brucite/Silica Core Shell, and Hollow Silica Particle. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rungthip Kunthom
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Siraphat Jan Cheepborisutikul
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Makoto Ogawa
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
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Adamska E, Niska K, Wcisło A, Grobelna B. Characterization and Cytotoxicity Comparison of Silver- and Silica-Based Nanostructures. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4987. [PMID: 34501076 PMCID: PMC8433955 DOI: 10.3390/ma14174987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/26/2021] [Accepted: 08/28/2021] [Indexed: 01/25/2023]
Abstract
Core-shell structures are the most common type of composite material nanostructures due to their multifunctional properties. Silver nanoparticles show broad antimicrobial activity, but the safety of their utilization still remains an issue to tackle. In many applications, the silver core is coated with inorganic shell to reduce the metal toxicity. This article presents the synthesis of various materials based on silver and silica nanoparticles, including SiO2@Ag, Ag@SiO2, and sandwich nanostructures-Ag@SiO2@Ag-and the morphology of these nanomaterials based on transmission electron microscopy (TEM), UV-Vis spectroscopy, and FT-IR spectroscopy. Moreover, we conducted the angle measurements due to the strong relationship between the level of surface wettability and cell adhesion efficiency. The main aim of the study was to determine the cytotoxicity of the obtained materials against two types of human skin cells-keratinocytes (HaCaT) and fibroblasts (HDF). We found that among all the obtained structures, SiO2@Ag and Ag@SiO2 showed the lowest cell toxicity and very high half-maximal inhibitory concentration. Moreover, the measurements of the contact angle showed that Ag@SiO2 nanostructures were different from other materials due to their superhydrophilic nature. The novel approach presented here shows the promise of implementing core-shell type nanomaterials in skin-applied cosmetic or medical products.
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Affiliation(s)
- Elżbieta Adamska
- Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdańsk, Poland; (E.A.); (A.W.)
| | - Karolina Niska
- Department of Medical Chemistry, Faculty of Medicine, Medical University of Gdańsk, Debinki St., 80-210 Gdańsk, Poland;
| | - Anna Wcisło
- Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdańsk, Poland; (E.A.); (A.W.)
| | - Beata Grobelna
- Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdańsk, Poland; (E.A.); (A.W.)
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Novel Dy 2O 3/ZnO-Au ternary nanocomposites: Green synthesis using pomegranate fruit extract, characterization and their photocatalytic and antibacterial properties. Bioorg Chem 2021; 115:105204. [PMID: 34325217 DOI: 10.1016/j.bioorg.2021.105204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/16/2021] [Accepted: 07/19/2021] [Indexed: 12/14/2022]
Abstract
In this study for the first time, high efficient, eco-friendly and novel Dy2O3/ZnO-Au ternary nanocomposites (Dy/ZnO-AuNCs) were prepared in presence of pomegranate fruit (PF) extract as capping and reducing agents (Dy/ZnO-AuNCs@PF). The influence of various parameters such as basic agents, reducing agents, sonication power, and sonication time were performed to reach the optimum condition. The formation of the products was characterized by FT-IR, HRTEM, XRD, FE-SEM, TEM, EDX and DRS techniques. The XRD and TEM analysis showed that the morphology and crystallite size of nanocomposites were spherical morphology and 85-90 nm, respectively. The obtained Dy/ZnO-AuNCs@PF were investigated as a nanocatalyst for degradation of erythrosine (ES) as anionic dye and basic violet 10 (BV10) as cationic dye under UV and visible light irradiations. The Dy/ZnO-AuNCs@PF exhibited higher photodegradation against ES (89.6%) and BV10 (91.3%) than pure Dy2O3 (63.1% for ES, 66.5% for BV10) and Dy2O3/ZnO (64.5% for ES, 70.8% for BV10) under UV irradiation. It was found that gold nanoparticles have significant effect on Dy/ZnO-AuNCs@PF catalytic performance for decomposition of organic pollutants. In addition, Dy/ZnO-AuNCs@PF showed excellent in-vitro antibacterial activity against A. baumannii, S. aureus and P. mirabilis with MIC and MBC values of (5, 80 mg/ml), (5, 40 mg/ml) and (2.5, 20 mg/ml), respectively. Generally, according to its excellent antibacterial and catalytic activity, Dy/ZnO-AuNCs@PF can be used in biomedical and environmental applications.
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Zhao Y, Wang A, Kang J, Chu H, Zhang H, Zhao Y. Factors affecting the metal-enhanced luminescence of lanthanide complexes by Ag@SiO2 nanoparticles. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112678] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Peña-Juárez MG, Robles-Martínez M, Méndez-Rodríguez KB, López-Esparza R, Pérez E, Gonzalez-Calderon JA. Role of the chemical modification of titanium dioxide surface on the interaction with silver nanoparticles and the capability to enhance antimicrobial properties of poly(lactic acid) composites. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03235-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Cr2O3/cellulose hybrid nanocomposites with unique properties: Facile synthesis, photocatalytic, bactericidal and antioxidant application. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 205:111842. [DOI: 10.1016/j.jphotobiol.2020.111842] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 01/10/2023]
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19
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The effect of Ag nanoparticles on physical and photocatalytic properties of ZnFe2O4/SiO2 nanocomposite. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127706] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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20
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Szczepańska E, Bielicka-Giełdoń A, Niska K, Strankowska J, Żebrowska J, Inkielewicz-Stępniak I, Łubkowska B, Swebocki T, Skowron P, Grobelna B. Synthesis of silver nanoparticles in context of their cytotoxicity, antibacterial activities, skin penetration and application in skincare products. Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1726917] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | | | - Karolina Niska
- Department of Medical Chemistry, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Justyna Strankowska
- Faculty of Mathematics, Physics and Informatics, Institute of Experimental Physics, University of Gdańsk, Gdańsk, Poland
| | | | | | - Beata Łubkowska
- Faculty of Chemistry, University of Gdansk, Gdansk, Poland
- Department of Physiotherapy and Health Sciences, The High College of Health, Gdańsk, Poland
| | | | - Piotr Skowron
- Faculty of Chemistry, University of Gdansk, Gdansk, Poland
| | - Beata Grobelna
- Faculty of Chemistry, University of Gdansk, Gdansk, Poland
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21
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Qu T, Tan Q, Liu L, Guo S, Li S, Liu Y. Polymer fiber membrane-based direct ethanol fuel cell with Ni-doped SnO2 promoted Pd/C catalyst. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00477d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The PFM-based DEFC with as-prepared Pd/Ni–SnO2/C as the anode catalyst and porous NiCo2O4 as the cathode catalyst delivers encouraging properties.
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Affiliation(s)
- Ting Qu
- State Key Laboratory for Mechanical Behavior of Materials
- School of Material Science and Engineering
- Xi'an Jiaotong University
- Xi'an
- China
| | - Qiang Tan
- State Key Laboratory for Mechanical Behavior of Materials
- School of Material Science and Engineering
- Xi'an Jiaotong University
- Xi'an
- China
| | - Liting Liu
- Analytical and Testing Center
- Northwestern Polytechnical University
- Xi'an
- China
| | - Shengwu Guo
- State Key Laboratory for Mechanical Behavior of Materials
- School of Material Science and Engineering
- Xi'an Jiaotong University
- Xi'an
- China
| | - Sai Li
- School of Chemistry and Chemical Engineering
- Xi'an University of Science and Technology
- Xi'an
- China
| | - Yongning Liu
- State Key Laboratory for Mechanical Behavior of Materials
- School of Material Science and Engineering
- Xi'an Jiaotong University
- Xi'an
- China
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22
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Wang H, Yang H, Zhao L. A Facile Synthesis of Core-Shell SiO 2@Cu-LBMS Nano-Microspheres for Drug Sustained Release Systems. MATERIALS 2019; 12:ma12233978. [PMID: 31801258 PMCID: PMC6926544 DOI: 10.3390/ma12233978] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/26/2019] [Accepted: 11/28/2019] [Indexed: 12/28/2022]
Abstract
A well-dispersed SiO2@Layered hydroxide cupric benzoate (SiO2@Cu-LBMS) with a hierarchical structure have been synthesized by a facile method. The layered hydroxide cupric benzoate with a structure of layered basic metal salt (Cu-LBMS) was directly deposited on the surface of silica spheres without any blinder. The morphology of the SiO2@Cu-LBMS nano-microsphere was observed by SEM, and the reaction conditions was also discussed. In addition, the XRD patterns and FTIR spectra provide consistent evidence to the formation of SiO2@Cu-LBMS nano-microspheres. The release behavior and drug loading capability of SiO2@Cu-LBMS microspheres were also investigated by using ibuprofen, aspirin and salicylic acid as model drugs. The results indicated that the drug loading capability of SiO2@Cu-LBMS nano-microspheres was much larger than layered hydroxide cupric benzoate, and the releasing time was significantly prolonged than layered hydroxide cupric benzoate and their physical mixture.
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Affiliation(s)
- Hui Wang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China; (H.W.); (L.Z.)
| | - Haifeng Yang
- College of Physics and Optoelectronics Technology, Medical Micro-nano Materials Research Center, Baoji University of Arts and Sciences, Baoji 721016, China
- Correspondence:
| | - Lifang Zhao
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, China; (H.W.); (L.Z.)
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23
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Selvan DSA, Shobana S, Thiruvasagam P, Murugesan S, Rahiman AK. Evaluation of Antimicrobial and Antidiabetic Activities of Ag@SiO2 Core–Shell Nanoparticles Synthesized with Diverse Shell Thicknesses. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01682-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Manganese disulfide-silicon dioxide nano-material: Synthesis, characterization, photocatalytic, antioxidant and antimicrobial studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 198:111579. [DOI: 10.1016/j.jphotobiol.2019.111579] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/21/2019] [Accepted: 07/24/2019] [Indexed: 11/18/2022]
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25
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Preparation, and structural of new NiS-SiO2 and Cr2S3-TiO2 nano-catalyst: Photocatalytic and antimicrobial studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 194:128-134. [DOI: 10.1016/j.jphotobiol.2019.03.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/18/2019] [Accepted: 03/25/2019] [Indexed: 11/22/2022]
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26
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Silica, Mesoporous Silica and Its Thiol Functionalized Silica Coated MgO and Mg(OH)2 Materials. CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s42250-019-00063-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Khan AM, Shafiq F, Khan SA, Ali S, Ismail B, Hakeem AS, Rahdar A, Nazar MF, Sayed M, Khan AR. Surface modification of colloidal silica particles using cationic surfactant and the resulting adsorption of dyes. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.039] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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28
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Hoang HT, Sertsova AA, Marakulin SI, Subcheva EN, Zaitseva MP, Yurtov EV. Manufacture of Magnesium Oxide Nanoparticles Coated with Silica Shells. RUSS J INORG CHEM+ 2018. [DOI: 10.1134/s0036023618110074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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29
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Nain R, Dobhal S, Bidaliya P, Saini G, Pani B, Sirohi S. Ag decorated silica nanostructures for surface plasmon enhanced photocatalysis. RSC Adv 2018; 8:20287-20294. [PMID: 35541642 PMCID: PMC9080814 DOI: 10.1039/c8ra02543f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 05/28/2018] [Indexed: 12/01/2022] Open
Abstract
In this article, we present a novel synthesis of mesoporous SiO2/Ag nanostructures for dye (methylene blue) adsorption and surface plasmon mediated photocatalysis. Mesoporous SiO2 nanoparticles with a pore size of 3.2 nm were synthesized using cetyltrimethylammonium bromide as a structure directing agent and functionalized with (3-aminopropyl)trimethoxysilane to introduce amine groups. The adsorption behavior of non-porous SiO2 nanoparticles was compared with that of the mesoporous silica nanoparticles. The large surface area and higher porosity of mesoporous SiO2 facilitated better adsorption of the dye as compared to the non-porous silica. Ag decorated SiO2 nanoparticles were synthesized by attaching silver (Ag) nanoparticles of different morphologies, i.e. spherical and triangular, on amine functionalized silica. The photocatalytic activity of the mesoporous SiO2/Ag was compared with that of non-porous SiO2/Ag nanoparticles and pristine Ag nanoparticles. Mesoporous SiO2 nanoparticles (k d = 31.3 × 10-3 g mg-1 min-1) showed remarkable improvement in the rate of degradation of methylene blue as compared to non-porous SiO2 (k d = 25.1 × 10-3 g mg-1 min-1) and pristine Ag nanoparticles (k d = 19.3 × 10-3 g mg-1 min-1). Blue Ag nanoparticles, owing to their better charge carrier generation and enhanced surface plasmon resonance, exhibited superior photocatalysis performance as compared to yellow Ag nanoparticles in all nanostructures.
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Affiliation(s)
- Ratyakshi Nain
- Bhaskaracharya College of Applied Sciences, University of Delhi Delhi-110075 India
| | - Saiyam Dobhal
- Bhaskaracharya College of Applied Sciences, University of Delhi Delhi-110075 India
| | - Parth Bidaliya
- Bhaskaracharya College of Applied Sciences, University of Delhi Delhi-110075 India
| | | | - Balaram Pani
- Bhaskaracharya College of Applied Sciences, University of Delhi Delhi-110075 India
| | - Sidhharth Sirohi
- Bhaskaracharya College of Applied Sciences, University of Delhi Delhi-110075 India
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30
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Selim MS, Yang H, Wang FQ, Li X, Huang Y, Fatthallah NA. Silicone/Ag@SiO 2 core-shell nanocomposite as a self-cleaning antifouling coating material. RSC Adv 2018; 8:9910-9921. [PMID: 35540804 PMCID: PMC9078747 DOI: 10.1039/c8ra00351c] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 03/05/2018] [Indexed: 11/30/2022] Open
Abstract
The effects of Ag@SiO2 core-shell nanofiller dispersion and micro-nano binary structure on the self-cleaning and fouling release (FR) in the modelled silicone nano-paints were studied. An ultrahydrophobic polydimethylsiloxane/Ag@SiO2 core-shell nanocomposite was prepared as an antifouling coating material. Ag@SiO2 core-shell nanospheres with 60 nm average size and a preferential {111} growth direction were prepared via a facile solvothermal and a modified Stöber methods with a controlled shell thickness. Ag@SiO2 core-shell nanofillers were inserted in the silicone composite surface via solution casting technique. A simple hydrosilation curing mechanism was used to cure the surface coating. Different concentrations of nanofillers were incorporated in the PDMS matrix for studying the structure-property relationship. Water contact angle (WCA) and surface free energy determinations as well as atomic force microscopy and scanning electron microscope were used to investigate the surface self-cleaning properties of the nanocomposites. Mechanical and physical properties were assessed as durability parameters. A comparable study was carried out between silicone/spherical Ag@SiO2 core-shell nanocomposites and other commercial FR coatings. Selected micro-foulants were used for biological and antifouling assessments up to 28 days. Well-distributed Ag@SiO2 core-shell (0.5 wt%) exhibited the preferable self-cleaning with WCA of 156° and surface free energy of 11.15 mN m-1.
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Affiliation(s)
- Mohamed S Selim
- Technical Institute of Physics and Chemistry, Chinese Academy of Science 29 Zhongguancun East Road, Haidian District Beijing 100190 China
- Petroleum Application Department, Egyptian Petroleum Research Institute Nasr City 11727 Cairo Egypt
| | - Hui Yang
- Technical Institute of Physics and Chemistry, Chinese Academy of Science 29 Zhongguancun East Road, Haidian District Beijing 100190 China
| | - Feng Q Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Science 29 Zhongguancun East Road, Haidian District Beijing 100190 China
| | - Xue Li
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan 336 West Road of Nan Xinzhuang Jinan 250022 China
| | - Yong Huang
- Technical Institute of Physics and Chemistry, Chinese Academy of Science 29 Zhongguancun East Road, Haidian District Beijing 100190 China
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Absalan Y, Fortalnova EA, Lobanov NN, Dobrokhotova EV, Kovalchukova OV. Ti (IV) complexes with some diphenols as precursors for TiO2 nano-sized catalysts. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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32
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Development of a novel functional core-shell-shell nanoparticles: From design to anti-bacterial applications. J Colloid Interface Sci 2018; 513:726-735. [DOI: 10.1016/j.jcis.2017.11.074] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/22/2017] [Accepted: 11/26/2017] [Indexed: 11/23/2022]
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33
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Facile synthesis of microporous SiO2/triangular Ag composite nanostructures for photocatalysis. APPLIED NANOSCIENCE 2017. [DOI: 10.1007/s13204-017-0597-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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