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Silver and Copper Nanoparticles Induce Oxidative Stress in Bacteria and Mammalian Cells. NANOMATERIALS 2022; 12:nano12142402. [PMID: 35889626 PMCID: PMC9319685 DOI: 10.3390/nano12142402] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022]
Abstract
Silver and copper nanoparticles (AgNPs and CuNPs) coated with stabilizing moieties induce oxidative stress in both bacteria and mammalian cells. Effective antibacterial agents that can overcome existing mechanisms of antibacterial resistance will greatly improve biomedical interventions. In this study, we analyzed the effect of nanoparticle-induced stress. Escherichia coli and normal human bronchial epithelial (BEAS-2B) cells were selected for this study. The nanoparticle constructs tested showed low toxicity to mammalian cells except for the polyvinylpyrrolidone-surface-stabilized copper nanoparticles. In fact, both types of copper nanoparticles used in this study induced higher levels of reactive oxygen species than the surface-stabilized silver nanoparticles. In contrast to mammalian cells, the surface-stabilized silver and copper nanoparticles showed varying levels of toxicity to bacteria cells. These data are expected to aid in bridging the knowledge gap in differential toxicities of silver and copper nanoparticles against bacteria and mammalian cells and will also improve infection interventions.
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Oheix E, Reicher C, Nouali H, Michelin L, Josien L, Daou TJ, Pieuchot L. Rational Design and Characterisation of Novel Mono- and Bimetallic Antibacterial Linde Type A Zeolite Materials. J Funct Biomater 2022; 13:jfb13020073. [PMID: 35735928 PMCID: PMC9224897 DOI: 10.3390/jfb13020073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 11/21/2022] Open
Abstract
The development of antimicrobial devices and surfaces requires the setup of suitable materials, able to store and release active principles. In this context, zeolites, which are microporous aluminosilicate minerals, hold great promise, since they are able to serve as a reservoir for metal-ions with antimicrobial properties. Here, we report on the preparation of Linde Type A zeolites, partially exchanged with combinations of metal-ions (Ag+, Cu2+, Zn2+) at different loadings (0.1–11.9 wt.%). We combine X-ray fluorescence, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction to monitor the metal-ion contents, distribution, and conservation of the zeolite structure after exchange. Then, we evaluate their antimicrobial activity, using agar dilution and optical-density monitoring of Escherichia coli cultures. The results indicate that silver-loaded materials are at least 70-fold more active than the copper-, zinc-, and non-exchanged ones. Moreover, zeolites loaded with lower Ag+ concentrations remain active down to 0.1 wt.%, and their activities are directly proportional to the total Ag content. Sequential exchanges with two metal ions (Ag+ and either Cu2+, Zn2+) display synergetic or antagonist effects, depending on the quantity of the second metal. Altogether, this work shows that, by combining analytical and quantitative methods, it is possible to fine-tune the composition of bi-metal-exchanged zeolites, in order to maximise their antimicrobial potential, opening new ways for the development of next-generation composite zeolite-containing antimicrobial materials, with potential applications for the design of dental or bone implants, as well as biomedical devices and pharmaceutical products.
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Affiliation(s)
- Emmanuel Oheix
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Chloé Reicher
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Habiba Nouali
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Laure Michelin
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Ludovic Josien
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - T. Jean Daou
- Aptar CSP Technology, 9 rue du Sandholz, F-67110 Niederbronn les Bains, France
- Correspondence: (T.J.D.); (L.P.); Tel.: +33-389336739 (T.J.D.); +33-389608713 (L.P.)
| | - Laurent Pieuchot
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
- Correspondence: (T.J.D.); (L.P.); Tel.: +33-389336739 (T.J.D.); +33-389608713 (L.P.)
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Wahab MA, Hasan CM, Alothman ZA, Hossain MSA. In-situ incorporation of highly dispersed silver nanoparticles in nanoporous carbon nitride for the enhancement of antibacterial activities. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124919. [PMID: 33388627 DOI: 10.1016/j.jhazmat.2020.124919] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 06/12/2023]
Abstract
Graphitic carbon nitride with suitably incorporated functionality has attracted much interest in the areas of environmental treatments, clean energy, sensing, and photocatalyst. However, the role of graphitic nanoporous carbon nitride (NCN) matrix from single carbon-nitrogen (C-N) source, aminoguanidine HCl as a precursor and close intimate contact between silver nanoparticles (Ag NPs) dispersed in NCN and bacteria has rarely been demonstrated. Herein, we demonstrate a nanostructure of Ag NPs-incorporated NCN sample (NCN@Ag) as an antibacterial agent against both wild type and the multidrug-resistant Escherichia coli (E. coli) pathogens. In-situ ultrasonication method was used to ensure the homogeneous mixing of the Ag NPs and a single C-N precursor at the molecular level so that pore size (PS) (9.17 nm) of SBA15 silica could be impregnated with ultrasonicated Ag NPs and a single C-N precursor. The porous structure, compositions, and structural information of the final nanocomposites were confirmed by using various analytical techniques such as XRD, TEM, BET surface area (SA) measurements, XPS, and UV. Then, the antibacterial activities of the NCN and NCN@Ag against both wild type and the multidrug-resistant Escherichia coli (E. coli) pathogens were also carried out and results from the in-vitro studies have shown the excellent bactericidal effect of the highly dispersed Ag NPs containing NCN@Ag sample against both E. coli strains. Results have confirmed that the antibacterial activity of the NCN@Ag sample is found to be higher than pure NCN, indicating that in-situ incorporated Ag NPs in NCN matrix have played significant role for enhancing antibacterial activities. Surprisingly, in the presence of NCN@Ag, the reduction in minimum inhibitory concentration (MIC) was higher (64-fold reduction) compared to its susceptible wild type (32-fold reduction) E. coli. These results indicate the potential application of NCN@Ag for inactivating infectious bacterial pathogens implicated in multidrug resistance.
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Affiliation(s)
- Md A Wahab
- Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China; School of Mechanical and Minning Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of the Queensland, St Lucia, Australia.
| | - Chowdhury M Hasan
- School of Biological Sciences, The University of Queensland, Brisbane, Australia; Institute of Infection and Global Health, University of Liverpool, United Kingdom
| | - Zeid A Alothman
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Md Shahriar A Hossain
- School of Mechanical and Minning Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of the Queensland, St Lucia, Australia.
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Doan HV, Leung KM, Ting VP, Sartbaeva A. Effect of mono- and divalent extra-framework cations on the structure and accessibility of porosity in chabazite zeolites. CrystEngComm 2021. [DOI: 10.1039/d0ce01259a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The differences in valence and size between extra-framework cations exert a significant effect on the nitrogen sorption ability in the synthesised chabazite zeolites (K-CHA, Cs-CHA, Ca-CHA, Ba-CHA, Sr-CHA and Zn-CHA).
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Affiliation(s)
- Huan V. Doan
- School of Chemistry
- University of Bristol
- Bristol BS8 1TS
- UK
- Department of Oil Refining and Petrochemistry
| | - Ka Ming Leung
- Department of Chemistry
- The University of Hong Kong
- Hong Kong
- China
| | - Valeska P. Ting
- Department of Mechanical Engineering
- University of Bristol
- Bristol BS8 1TR
- UK
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Komaty S, Özçelik H, Zaarour M, Ferre A, Valable S, Mintova S. Ruthenium tris(2,2'-bipyridyl) complex encapsulated in nanosized faujasite zeolite as intracellular localization tracer. J Colloid Interface Sci 2021; 581:919-927. [PMID: 32956911 DOI: 10.1016/j.jcis.2020.08.117] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/24/2020] [Accepted: 08/29/2020] [Indexed: 11/25/2022]
Abstract
Designing zeolites for medical applications is a challenging task that requires introducing new functionalities without altering the intrinsic properties such as morphology, crystallinity, colloidal stability, surface charge, and porosity. Herein, we present the encapsulation of luminescent ruthenium-tris(2,2'-bipyridyl) complex in faujasite (FAU) zeolite nanocrystals (Ru(bpy)3-FAU) and their use as an intracellular localization tracer. Upon exciting the Ru(bpy)3-FAU zeolite at 450 nm, the sample gives rise to an orange-red emission at 628 nm, thus permitting its use for cellular imaging and localization of the zeolite nanoparticles. The nanosized Ru(bpy)3-FAU zeolite is characterized in terms of size, charge, crystallinity, morphology, porosity, thermal stability, and sorption capacity. The potential toxicity of Ru(bpy)3-FAU on U251-MG glioblastoma cells was evaluated. A safe concentration (50-100 µg/ml) for the Ru(bpy)3-FAU zeolite is identified. The luminescent properties of the ruthenium complex confined in the zeolite nanocrystals allow their localization in the U251-MG cells with a main accumulation in the cytoplasm. The Ru(bpy)3-FAU nanosized zeolite is a potential candidate for biological applications for being stable, safe, capable of loading respiratory gases, and easily probed in the cells owing to its luminescent properties.
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Affiliation(s)
- Sarah Komaty
- Normandie Univ., UNICAEN, CNRS, ENSICAEN, Laboratoire Catalyse et Spectrochimie (LCS), 14050 Caen, France.
| | - Hayriye Özçelik
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP Cyceron, Caen, France
| | - Moussa Zaarour
- Normandie Univ., UNICAEN, CNRS, ENSICAEN, Laboratoire Catalyse et Spectrochimie (LCS), 14050 Caen, France.
| | - Aurélie Ferre
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP Cyceron, Caen, France
| | - Samuel Valable
- Normandie Université, UNICAEN, CEA, CNRS, ISTCT/CERVOxy group, GIP Cyceron, Caen, France..
| | - Svetlana Mintova
- Normandie Univ., UNICAEN, CNRS, ENSICAEN, Laboratoire Catalyse et Spectrochimie (LCS), 14050 Caen, France.
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Serati-Nouri H, Jafari A, Roshangar L, Dadashpour M, Pilehvar-Soltanahmadi Y, Zarghami N. Biomedical applications of zeolite-based materials: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111225. [DOI: 10.1016/j.msec.2020.111225] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 06/15/2020] [Accepted: 06/19/2020] [Indexed: 12/22/2022]
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Highly dispersed Pt nanoparticles on ultrasmall EMT zeolite: A peroxidase-mimic nanoenzyme for detection of H 2O 2 or glucose. J Colloid Interface Sci 2020; 570:300-311. [PMID: 32163791 DOI: 10.1016/j.jcis.2020.02.118] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/28/2020] [Accepted: 02/28/2020] [Indexed: 01/06/2023]
Abstract
In past decade, Pt-based nanomaterials as peroxidase mimics have attracted much attention for H2O2 and glucose detection. However, easy aggregation of Pt nanoparticles (Pt NPs) greatly decreases their peroxidase-like activity. In this work, novel Pt/EMT nanocomposites were prepared by uniformly loading Pt NPs (5-8 nm) onto the support of ultrasmall EMT zeolite (15-20 nm), a kind of low-silica microporous aluminosilicate material. The hybrid Pt/EMT nanomaterials could be well dispersed in water to form a homogeneous suspension, and were then utilized as a superior peroxidase-like catalyst for oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). The optimal catalyst of 2.6Pt/EMT nanocomposite exhibited excellent catalytic performance toward H2O2 and TMB than natural enzyme of horseradish peroxidase (HRP) by using a steady-state kinetic analysis based on the typical Michaelis-Menten kinetics theory. The peroxidase-like catalyst showed a promising activity in a wide pH and temperature range as well as the long-term stability. A facile and reliable colorimetric assay based on the peroxidase mimic of Pt/EMT nanocomposite was constructed for precise detection of H2O2 and glucose in a wide linear range, with low limits of detection of 1.1 μM and 13.2 μM, respectively. Due to high selectivity to glucose against other sugars on the catalyst, the method was demonstrated to accurately measure the concentration of glucose in real samples including human blood serum and fruit juices, indicating a potential application of the Pt/EMT nanocomposites as a robust peroxidase mimic and a reliable biosensor in the fields of clinical diagnosis, pharmaceutical, food research and so on.
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Wan Y, Xu W, Ren X, Wang Y, Dong B, Wang L. Microporous Frameworks as Promising Platforms for Antibacterial Strategies Against Oral Diseases. Front Bioeng Biotechnol 2020; 8:628. [PMID: 32596233 PMCID: PMC7304413 DOI: 10.3389/fbioe.2020.00628] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 05/22/2020] [Indexed: 12/21/2022] Open
Abstract
Nowadays, the heavy burden of oral diseases such as dental caries, periodontitis, endodontic infections, etc., and their consequences on the patients' quality of life indicate a strong need for developing effective therapies. Bacterial infections played an important role in the field of oral diseases, in-depth insight of such oral diseases have given rise to the demand for antibacterial therapeutic strategies. Recently, microporous frameworks have attracted tremendous interest in antibacterial application due to their well-defined porous structures for drug delivery. In addition, intensive efforts have been made to enhance the antibacterial performance of microporous frameworks, such as ion doping, photosensitizer incorporation as building blocks, and surface modifications. This review article aims on the major recent developments of microporous frameworks for antibacterial applications against oral diseases. The first part of this paper puts concentration on the cutting-edge researches on the versatile antibacterial strategies of microporous materials via drug delivery, inherent activity, and structural modification. The second part discusses the antibacterial applications of microporous frameworks against oral diseases. The applications of microporous frameworks not only have promising therapeutic potential to inhibit bacterial plaque-initiated oral infectious diseases, but also have a wide applicability to other biomedical applications.
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Affiliation(s)
- Yao Wan
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
| | - Wenzhou Xu
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
- Department of Periodontology, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Xuan Ren
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
| | - Yu Wang
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun, China
| | - Biao Dong
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
| | - Lin Wang
- Department of Oral Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Sciences and Technology for Stomatology Nanoengineering, Changchun, China
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Derakhshankhah H, Jafari S, Sarvari S, Barzegari E, Moakedi F, Ghorbani M, Shiri Varnamkhasti B, Jaymand M, Izadi Z, Tayebi L. Biomedical Applications of Zeolitic Nanoparticles, with an Emphasis on Medical Interventions. Int J Nanomedicine 2020; 15:363-386. [PMID: 32021185 PMCID: PMC6983480 DOI: 10.2147/ijn.s234573] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/20/2019] [Indexed: 01/02/2023] Open
Abstract
The advent of porous materials, in particular zeolitic nanoparticles, has opened up unprecedented putative research avenues in nanomedicine. Zeolites with intracrystal mesopores are low framework density aluminosilicates possessing a regular porous structure along with intricate channels. Their unique physiochemical as well as physiological parameters necessitate a comprehensive overview on their classifications, fabrication platforms, cellular/macromolecular interactions, and eventually their prospective biomedical applications through illustrating the challenges and opportunities in different integrative medical and pharmaceutical fields. More particularly, an update on recent advances in zeolite-accommodated drug delivery and the prevalent challenges regarding these molecular sieves is to be presented. In conclusion, strategies to accelerate the translation of these porous materials from bench to bedside along with common overlooked physiological and pharmacological factors of zeolite nanoparticles are discussed and debated. Furthermore, for zeolite nanoparticles, it is a matter of crucial importance, in terms of biosafety and nanotoxicology, to appreciate the zeolite-bio interface once the zeolite nanoparticles are exposed to the bio-macromolecules in biological media. We specifically shed light on interactions of zeolite nanoparticles with fibrinogen and amyloid beta which had been comprehensively investigated in our recent reports. Given the significance of zeolite nanoparticles' interactions with serum or interstitial proteins conferring them new biological identity, the preliminary approaches for deeper understanding of administration, distribution, metabolism and excretion of zeolite nanoparticles are elucidated.
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Affiliation(s)
- Hossein Derakhshankhah
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Zistmavad Pharmed Co., Tehran, Iran
| | - Samira Jafari
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Zistmavad Pharmed Co., Tehran, Iran
| | - Sajad Sarvari
- Department of Pharmaceutical and Pharmacological Science, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Ebrahim Barzegari
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Faezeh Moakedi
- Department of Biochemistry and Molecular Biology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Milad Ghorbani
- Department of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Behrang Shiri Varnamkhasti
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mehdi Jaymand
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zhila Izadi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI53201, USA
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Cui J, Yeasmin R, Shao Y, Zhang H, Zhang H, Zhu J. Fabrication of Ag +, Cu 2+, and Zn 2+ Ternary Ion-Exchanged Zeolite as an Antimicrobial Agent in Powder Coating. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05338] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jixing Cui
- School of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Rezwana Yeasmin
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Yuanyuan Shao
- School of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Haiping Zhang
- School of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Hui Zhang
- School of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Jesse Zhu
- School of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 3K7, Canada
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Zhang X, Sun J, Liu J, Xu H, Dong B, Sun X, Zhang T, Xu S, Xu L, Bai X, Zhang S, Mintova S, Lu G, Song H. Label-free electrochemical immunosensor based on conductive Ag contained EMT-style nano-zeolites and the application for α-fetoprotein detection. SENSORS AND ACTUATORS B: CHEMICAL 2018; 255:2919-2926. [DOI: 10.1016/j.snb.2017.09.112] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/31/2023]
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13
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A Facile Route toward the Increase of Oxygen Content in Nanosized Zeolite by Insertion of Cerium and Fluorinated Compounds. Molecules 2018; 23:molecules23020037. [PMID: 29364144 PMCID: PMC6017005 DOI: 10.3390/molecules23020037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/15/2018] [Accepted: 01/19/2018] [Indexed: 11/25/2022] Open
Abstract
Enriching oxygen content within nanosized zeolite X (as synthesized Na-X) by insertion of cerium (ion exchanged Ce-X) and functionalization with bromoperfluoro-n-octane (fluorinated F-X) is reported. The materials were fully characterized by powder X-ray diffraction (XRD), dynamic light scattering (DLS), zeta potential, thermogravimetric analysis (TGA), nitrogen adsorption, and nuclear magnetic resonance (19F NMR). The O2 adsorption in the zeolite samples at various concentrations (0 to 165 Torr) at −196 °C was studied by in situ FTIR. The modification of nanosized zeolites did not alter their colloidal stability, crystallinity, porosity, and particle size distribution. The inclusion of cerium and bromoperfluoro-n-octane considerably increase the oxygen capacity by 33% for samples Ce-X and F-X in comparison to the as-synthesized Na-X zeolite. Further, toxicity tests revealed that these materials are safe, which opens the door for their implementation in medical applications, where controlled delivery of oxygen is highly desirable.
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Chen S, Popovich J, Iannuzo N, Haydel SE, Seo DK. Silver-Ion-Exchanged Nanostructured Zeolite X as Antibacterial Agent with Superior Ion Release Kinetics and Efficacy against Methicillin-Resistant Staphylococcus aureus. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39271-39282. [PMID: 29083147 DOI: 10.1021/acsami.7b15001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
As antibiotic resistance continues to be a major public health problem, antimicrobial alternatives have become critically important. Nanostructured zeolites have been considered as an ideal host for improving popular antimicrobial silver-ion-exchanged zeolites, because with very short diffusion path lengths they offer advantages in ion diffusion and release over their conventional microsized zeolite counterparts. Herein, comprehensive studies are reported on materials characteristics, silver-ion release kinetics, and antibacterial properties of silver-ion-exchanged nanostructured zeolite X with comparisons to conventional microsized silver-ion-exchanged zeolite (∼2 μm) as a reference. The nanostructured zeolites are submicrometer-sized aggregates (100-700 nm) made up of primary zeolite particles with an average primary particle size of 24 nm. The silver-ion-exchanged nanostructured zeolite released twice the concentration of silver ions at a rate approximately three times faster than the reference. The material exhibited rapid antimicrobial activity against methicillin-resistant Staphylococcus aureus (MRSA) with minimum inhibitory concentration (MIC) values ranging from 4 to 16 μg/mL after 24 h exposure in various growth media and a minimum bactericidal concentration (MBC; >99.9% population reduction) of 1 μg/mL after 2 h in water. While high concentrations of silver-ion-exchanged nanostructured zeolite X were ineffective at reducing MRSA biofilm cell viability, efficacy increased at lower concentrations. In consideration of potential medical applications, cytotoxicity of the silver-ion-exchanged nanostructured zeolite X was also investigated. After 4 days of incubation, significant reduction in eukaryotic cell viability was observed only at concentrations 4-16-fold greater than the 24 h MIC, indicating low cytotoxicity of the material. Our results establish silver-ion-exchanged nanostructured zeolites as an effective antibacterial material against dangerous antibiotic-resistant bacteria.
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Affiliation(s)
- Shaojiang Chen
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - John Popovich
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - Natalie Iannuzo
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - Shelley E Haydel
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - Dong-Kyun Seo
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
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15
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Tosheva L, Belkhair S, Gackowski M, Malic S, Al-Shanti N, Verran J. Rapid screening of the antimicrobial efficacy of Ag zeolites. Colloids Surf B Biointerfaces 2017; 157:254-260. [PMID: 28601042 DOI: 10.1016/j.colsurfb.2017.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 04/24/2017] [Accepted: 06/01/2017] [Indexed: 02/02/2023]
Abstract
A semi-quantitative screening method was used to compare the killing efficacy of Ag zeolites against bacteria and yeast as a function of the zeolite type, crystal size and concentration. The method, which substantially reduced labor, consumables and waste and provided an excellent preliminary screen, was further validated by quantitative plate count experiments. Two pairs of zeolite X and zeolite beta with different sizes (ca. 200nm and 2μm for zeolite X and ca. 250 and 500nm for zeolite beta) were tested against Escherichia coli (E. coli) and Candida albicans (C. albicans) at concentrations in the range 0.05-0.5mgml-1. Reduction of the zeolite crystal size resulted in a decrease in the killing efficacy against both microorganisms. The semi-quantitative tests allowed convenient optimization of the zeolite concentrations to achieve targeted killing times. Zeolite beta samples showed higher activity compared to zeolite X despite their lower Ag content, which was attributed to the higher concentration of silver released from zeolite beta samples. Cytotoxicity measurements using peripheral blood mononuclear cells (PBMCs) indicated that Ag zeolite X was more toxic than Ag zeolite beta. However, the trends for the dependence of cytotoxicity on zeolite crystal size at different zeolite concentrations were different for the two zeolites and no general conclusions about zeolite cytotoxicity could be drawn from these experiments. This result indicates a complex relationship, requiring the necessity for individual cytotoxicity measurements for all antimicrobial applications based on the use of zeolites.
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Affiliation(s)
- L Tosheva
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, United Kingdom.
| | - S Belkhair
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, United Kingdom
| | - M Gackowski
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, United Kingdom; Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - S Malic
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, United Kingdom
| | - N Al-Shanti
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, United Kingdom
| | - J Verran
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, United Kingdom
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16
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Anfray C, Dong B, Komaty S, Mintova S, Valable S. Acute Toxicity of Silver Free and Encapsulated in Nanosized Zeolite for Eukaryotic Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:13849-13854. [PMID: 28383272 DOI: 10.1021/acsami.7b00265] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The potential toxicity of encapsulated silver in EMT-type nanosized zeolites on prokaryotic cells, human tumor cell lines from various origins, and primary cultures of neurons and astrocytes was investigated. Silver in cationic form (Ag+) was encapsulated in EMT-type nanosized zeolites via an ion exchange process (Ag+-EMT) and compared with the reduced silver (Ag0) in the zeolite (Ag0-EMT). As reference samples for the toxicity measurements, pure EMT-type zeolite and silver perchlorate were used. Cells were exposed to silver-containing zeolites (50, 100, and 400 μg/mL) for 24 and 48 h. After exposure to Ag+-EMT (50 μg/mL) for 24 h, a loss in cell viability independent of the cell type was observed, ranging from -34.37 ± 23.90% for astrocytes to -99.5 ± 0.24% for U87-MG cells. These results were comparable with the toxicity for silver perchlorate. The Ag0-EMT sample showed lower toxicity on human cell lines in comparison to that of Ag+-EMT. A decrease in cell viability, i.e., -73.46 ± 20.78% and -62.3 ± 17.96% for U87-MG and HEK 293 cells, respectively, under exposure only to high concentration of Ag0-EMT (400 μg/mL) for 24 h was measured. However, the Ag0-EMT was as toxic as the Ag+-EMT for astrocytes and neurons (-97.95 ± 3.31% and -100 ± 1.11%, respectively, after exposure to 50 μg/mL for 24 h). No decrease in cell viability exposed to pure EMT zeolite was found. The results demonstrate the severe toxicity of silver cations, either free or encapsulated, in comparison to reduced silver encapsulated in zeolite nanocrystals. Therefore, silver cations, either free or encapsulated, must be used with great caution regarding their toxicity on eukaryotic cells.
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Affiliation(s)
- Clément Anfray
- ISTCT/CERVOxy Group, Normandy University, UNICAEN, CEA, CNRS , 14000 Caen, France
| | - Biao Dong
- Laboratoire Catalyse et Spectrochimie (LCS), CNRS, ENSICAEN, Normandy University , 6 boulevard du Maréchal Juin, 14050 Caen, France
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , Changchun 130022, China
| | - Sarah Komaty
- Laboratoire Catalyse et Spectrochimie (LCS), CNRS, ENSICAEN, Normandy University , 6 boulevard du Maréchal Juin, 14050 Caen, France
| | - Svetlana Mintova
- Laboratoire Catalyse et Spectrochimie (LCS), CNRS, ENSICAEN, Normandy University , 6 boulevard du Maréchal Juin, 14050 Caen, France
| | - Samuel Valable
- ISTCT/CERVOxy Group, Normandy University, UNICAEN, CEA, CNRS , 14000 Caen, France
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17
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Kumari M, Shukla S, Pandey S, Giri VP, Bhatia A, Tripathi T, Kakkar P, Nautiyal CS, Mishra A. Enhanced Cellular Internalization: A Bactericidal Mechanism More Relative to Biogenic Nanoparticles than Chemical Counterparts. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4519-4533. [PMID: 28051856 DOI: 10.1021/acsami.6b15473] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Biogenic synthesis of silver nanoparticles for enhanced antimicrobial activity has gained a lot of momentum making it an urgent need to search for a suitable biocandidate which could be utilized for efficient capping and shaping of silver nanoparticles with enhanced bactericidal activity utilizing its secondary metabolites. Current work illustrates the enhancement of antimicrobial efficacy of silver nanoparticles by reducing and modifying their surface with antimicrobial metabolites of cell free filtrate of Trichoderma viride (MTCC 5661) in comparison to citrate stabilized silver nanoparticles. Nanoparticles were characterized by visual observations, UV-visible spectroscopy, zetasizer, and transmission electron microscopy (TEM). Synthesized particles were monodispersed, spherical in shape and 10-20 nm in size. Presence of metabolites on surface of biosynthesized silver nanoparticles was observed by gas chromatography-mass spectroscopy (GC-MS), energy dispersive X-ray analysis (EDAX), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The antimicrobial activity of both silver nanoparticles was tested against Shigella sonnei, Pseudomonas aeruginosa (Gram-negative) and Staphylococcus aureus (Gram-positive) by growth inhibition curve analysis and colony formation unit assay. Further, it was noted that internalization of biosynthesized nanoparticles inside the bacterial cell was much higher as compared to citrate stabilized particles which in turn lead to higher production of reactive oxygen species. Increase in oxidative stress caused severe damage to bacterial membrane enhancing further uptake of particles and revoking other pathways for bacterial disintegration resulting in complete and rapid death of pathogens as evidenced by fluorescein diacetate/propidium iodide dual staining and TEM. Thus, study reveals that biologically synthesized silver nanoarchitecture coated with antimicrobial metabolites of T. viride was more potent than their chemical counterpart in killing of pathogenic bacteria.
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Affiliation(s)
- Madhuree Kumari
- CSIR-National Botanical Research Institute , Rana Pratap Marg, Lucknow, 226 001, India
| | - Shatrunajay Shukla
- CSIR-Indian Institute of Toxicology Research , Vishvigyan Bhawan 31, Mahatma Gandhi Marg, Lucknow, 226 001, India
| | - Shipra Pandey
- CSIR-National Botanical Research Institute , Rana Pratap Marg, Lucknow, 226 001, India
| | - Ved P Giri
- CSIR-National Botanical Research Institute , Rana Pratap Marg, Lucknow, 226 001, India
| | - Anil Bhatia
- CSIR-National Botanical Research Institute , Rana Pratap Marg, Lucknow, 226 001, India
| | - Tusha Tripathi
- CSIR-National Botanical Research Institute , Rana Pratap Marg, Lucknow, 226 001, India
| | - Poonam Kakkar
- CSIR-Indian Institute of Toxicology Research , Vishvigyan Bhawan 31, Mahatma Gandhi Marg, Lucknow, 226 001, India
| | - Chandra S Nautiyal
- CSIR-National Botanical Research Institute , Rana Pratap Marg, Lucknow, 226 001, India
| | - Aradhana Mishra
- CSIR-National Botanical Research Institute , Rana Pratap Marg, Lucknow, 226 001, India
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18
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Aubert E, Abboud M, Doudouh A, Durand P, Peluso P, Ligresti A, Vigolo B, Cossu S, Pale P, Mamane V. Silver(i) coordination polymers with 3,3′,5,5′-tetrasubstituted 4,4′-bipyridine ligands: towards new porous chiral materials. RSC Adv 2017. [DOI: 10.1039/c6ra28197d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The first homochiral metal–organic framework (MOF) based on an atropisomeric 4,4′-bipyridine ligand is described.
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Affiliation(s)
- E. Aubert
- Cristallographie, Résonance Magnétique et Modélisations (CRM2). UMR CNRS 7036
- Université de Lorraine
- France
| | - M. Abboud
- Cristallographie, Résonance Magnétique et Modélisations (CRM2). UMR CNRS 7036
- Université de Lorraine
- France
- Laboratoire SRSMC
- UMR CNRS 7565
| | - A. Doudouh
- Cristallographie, Résonance Magnétique et Modélisations (CRM2). UMR CNRS 7036
- Université de Lorraine
- France
| | - P. Durand
- Cristallographie, Résonance Magnétique et Modélisations (CRM2). UMR CNRS 7036
- Université de Lorraine
- France
| | - P. Peluso
- Istituto di Chimica Biomolecolare ICB CNR – Sede secondaria di Sassari
- Regione Baldinca
- Italy
| | - A. Ligresti
- Istituto di Chimica Biomolecolare ICB CNR – Via Campi Flegrei 34
- I-80078 Pozzuoli (Na)
- Italy
| | - B. Vigolo
- Institut Jean Lamour
- CNRS-Université de Lorraine
- France
| | - S. Cossu
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca' Foscari di Venezia
- Italy
| | - P. Pale
- Institut de Chimie de Strasbourg
- UMR 7177, Equipe LASYROC
- 1 rue Blaise Pascal
- France
| | - V. Mamane
- Institut de Chimie de Strasbourg
- UMR 7177, Equipe LASYROC
- 1 rue Blaise Pascal
- France
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19
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Jaime-Acuña OE, Meza-Villezcas A, Vasquez-Peña M, Raymond-Herrera O, Villavicencio-García H, Petranovskii V, Vazquez-Duhalt R, Huerta-Saquero A. Synthesis and Complete Antimicrobial Characterization of CEOBACTER, an Ag-Based Nanocomposite. PLoS One 2016; 11:e0166205. [PMID: 27824932 PMCID: PMC5100962 DOI: 10.1371/journal.pone.0166205] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 10/25/2016] [Indexed: 12/30/2022] Open
Abstract
The antimicrobial activity of silver nanoparticles (AgNPs) is currently used as an alternative disinfectant with diverse applications, ranging from decontamination of aquatic environments to disinfection of medical devices and instrumentation. However, incorporation of AgNPs to the environment causes collateral damage that should be avoided. In this work, a novel Ag-based nanocomposite (CEOBACTER) was successfully synthetized. It showed excellent antimicrobial properties without the spread of AgNPs into the environment. The complete CEOBACTER antimicrobial characterization protocol is presented herein. It is straightforward and reproducible and could be considered for the systematic characterization of antimicrobial nanomaterials. CEOBACTER showed minimal bactericidal concentration of 3 μg/ml, bactericidal action time of 2 hours and re-use capacity of at least five times against E. coli cultures. The bactericidal mechanism is the release of Ag ions. CEOBACTER displays potent bactericidal properties, long lifetime, high stability and re-use capacity, and it does not dissolve in the solution. These characteristics point to its potential use as a bactericidal agent for decontamination of aqueous environments.
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Affiliation(s)
- O. E. Jaime-Acuña
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - A. Meza-Villezcas
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - M. Vasquez-Peña
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - O. Raymond-Herrera
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - H. Villavicencio-García
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - V. Petranovskii
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - R. Vazquez-Duhalt
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - A. Huerta-Saquero
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
- * E-mail:
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20
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Microbial growth inhibition caused by Zn/Ag-Y zeolite materials with different amounts of silver. Colloids Surf B Biointerfaces 2016; 142:141-147. [DOI: 10.1016/j.colsurfb.2016.02.042] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 11/24/2022]
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21
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Zhang H, Wang G, Zheng J, Kong Q, Pan M, Li B, Li R. Synthesis of Hierarchical ZSM-5 Composed of Nanocrystals without a Secondary Template. CHEM LETT 2016. [DOI: 10.1246/cl.160010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hongyan Zhang
- Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical and Catalytic Technology, Taiyuan University of Technology
| | - Guangshuai Wang
- Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical and Catalytic Technology, Taiyuan University of Technology
| | - Jiajun Zheng
- Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical and Catalytic Technology, Taiyuan University of Technology
| | - Qinlan Kong
- Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical and Catalytic Technology, Taiyuan University of Technology
| | - Meng Pan
- Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical and Catalytic Technology, Taiyuan University of Technology
| | - Biao Li
- Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical and Catalytic Technology, Taiyuan University of Technology
| | - Ruifeng Li
- Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical and Catalytic Technology, Taiyuan University of Technology
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22
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Jiao W. Facile synthesis of silver nanoparticles deposited on a calcium silicate hydrate composite as an efficient bactericidal agent. RSC Adv 2016. [DOI: 10.1039/c6ra24265k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Silver nanoparticles deposited calcium silicate hydrate composite was synthesized and demonstrated high antibacterial activities against Gram-negative and Gram-positive bacteria.
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Affiliation(s)
- Wei Jiao
- Department of Anesthesiology
- Huashan Hospital
- Fudan University
- Shanghai 200040
- China
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23
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Gao D, Zheng A, Zhang X, Sun H, Dai X, Yang Y, Wang H, Qin Y, Xu S, Duan A. Mercaptosilane-assisted synthesis of sub-nanosized Pt particles within hierarchically porous ZSM-5/SBA-15 materials and their enhanced hydrogenation properties. NANOSCALE 2015; 7:10918-24. [PMID: 26054526 DOI: 10.1039/c5nr02749g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A novel catalyst that consists of sub-nanosized Pt particles within hierarchically porous ZSM-5/SBA-15 materials was synthesized. This catalyst exhibited high stability and a hierarchically porous structure of a micro-mesoporous composite and possessed a high density of active sites by confinement of sub-nanosized Pt particles within small-pore zeolites, showing high catalytic properties for the hydrogenation of 1,3-butadiene and cyclooctadiene at room temperature.
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Affiliation(s)
- Daowei Gao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, PR China.
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24
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Mintova S, Jaber M, Valtchev V. Nanosized microporous crystals: emerging applications. Chem Soc Rev 2015; 44:7207-33. [PMID: 25983108 DOI: 10.1039/c5cs00210a] [Citation(s) in RCA: 242] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review highlights recent developments in the synthesis and unconventional applications of nanosized microporous crystals including framework (zeolites) and layered (clays) type materials. Owing to their microporous nature nanosized zeolites and clays exhibit novel properties, different from those of bulk materials. The factors controlling the formation of nanosized microporous crystals are first revised. The most promising approaches from the viewpoint of large-scale production of nanosized zeolites and clays are discussed in depth. The preparation and advanced applications of nanosized zeolites and clays in free (suspension and powder forms) and fixed (films) forms are summarized. Further the review emphasises the non-conventional applications of new porous materials. A comprehensive analysis of the emerging applications of microporous nanosized crystals in the field of semiconductor industry, optical materials, chemical sensors, medicine, cosmetics, and food industry is presented. Finally, the future needs and perspectives of nanosized microporous materials (zeolites and clays) are addressed.
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Affiliation(s)
- Svetlana Mintova
- Laboratoire Catalyse & Spectrochimie, ENSICAEN - Université de Caen - CNRS 6, boulevard Maréchal Juin, 14050 Caen, France.
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25
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Belkhair S, Kinninmonth M, Fisher L, Gasharova B, Liauw CM, Verran J, Mihailova B, Tosheva L. Silver zeolite-loaded silicone elastomers: a multidisciplinary approach to synthesis and antimicrobial assessment. RSC Adv 2015. [DOI: 10.1039/c5ra03856a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The fabrication of silicone elastomers containing organo-silane modified Ag-zeolites with potential for applications as antibacterial medical devices is demonstrated.
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Affiliation(s)
- Sama Belkhair
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Malcolm Kinninmonth
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Leanne Fisher
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Biliana Gasharova
- Institute for Photon Science and Synchrotron Radiation
- Karlsruhe Institute of Technology
- Karlsruhe 76021
- Germany
| | - Christopher M. Liauw
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Joanna Verran
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
| | - Boriana Mihailova
- Mineralogisch-Petrographisches Institut
- Universität Hamburg
- D-20146 Hamburg
- Germany
| | - Lubomira Tosheva
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester
- UK
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26
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Ferreira L, Almeida-Aguiar C, Parpot P, Fonseca AM, Neves IC. Preparation and assessment of antimicrobial properties of bimetallic materials based on NaY zeolite. RSC Adv 2015. [DOI: 10.1039/c5ra04960a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ZnAg–Y was the most active material tested against the bacteria Escherichia coli and the yeast Saccharomyces cerevisiae as indicator strains.
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Affiliation(s)
- Liliana Ferreira
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
| | - Cristina Almeida-Aguiar
- CITAB (Center for the Research and Technology of Agro-Environmental and Biological Sciences)
- AgroBioPlant Group
- Biology Department
- University of Minho
- 4710-057 Braga
| | - Pier Parpot
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
| | - António M. Fonseca
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
| | - Isabel C. Neves
- Centre of Chemistry
- Chemistry Department
- University of Minho
- 4710-057 Braga
- Portugal
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