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Pu XQ, Shang P, Chen XY, Xiao YQ, Jiang KW, Jiang XF. Palladium-anchored calix[4]arene-derived porous organic polymer towards efficient hydrolytic cleavage of carbon disulfide. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134808. [PMID: 38861903 DOI: 10.1016/j.jhazmat.2024.134808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/24/2024] [Accepted: 06/03/2024] [Indexed: 06/13/2024]
Abstract
The release of carbon disulfide can have adverse effects on our environment and human health. The stability of carbon disulfide and the slow kinetics of hydrolysis can make it challenging to achieve efficient and practical cleavage of the CS bonds. Herein, a calix[4]arene-based porous organic polymer (CPOP-1) is innovatively synthesized through an optimized polycondensation reaction using C-Methylcalix[4]resorcinarene and hexafluoro-hexaazatriphenylene as monomers. Subsequently, palladium-induced calix[4]arene-based porous organic polymer was also synthesized via strong Pd-N coordination bonds to construct the metal-induced porous catalyst (CPOP-2). The polymeric catalyst active center [Pd2+(N^N)(NO3-)2] demonstrated outstanding catalytic hydrolysis performance (11.14 μmol g-1 h-1) in 10.5 h which is significantly enhanced by ca.13.2 times as compared to reported mononuclear Bpy-Pd(NO3)2, and 7.07 times than model trinuclear complex catalyst HATN-Pd-1, respectively. The control experiments revealed that POP catalysts showcased robust stability, prolonged effectiveness, and feasible recyclability during the hydrolytic cleavage of carbon disulfide at room temperature in aqueous solutions. Furthermore, the coordination environment of [Pd2+(N^N)] was validated through XPS, EXAFS, and isotope labeling measurements, and the hydrolysis cleavage products were confirmed e. g. CO2, sulfide, and protons. More importantly, a reaction mechanism was formulated coupled with theoretical calculations, and simulations. The proposed mechanism involves sequential OH- nucleophilic attacks on the carbon atoms of insert-coordinated CS2 and COS, leading to the cleavage of double CS bonds and the formation of CO bonds. The concurrent dissociation of the C-S bond and liberation of CO2 result in an intermediate structure characterized by [(N^N)Pd2+](SH-)2. This intermediate motif serves as the source of the thermodynamic driving force for the reaction.
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Affiliation(s)
- Xiao-Qian Pu
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, PR China
| | - Ping Shang
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, PR China
| | - Xing-Yu Chen
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, PR China
| | - Yu-Qing Xiao
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, PR China
| | - Kai-Wen Jiang
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, PR China
| | - Xuan-Feng Jiang
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, PR China.
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Li Y, Yin P, Zhang Y, Zhang R. Synthesis of honeycomb Ag@CuO nanoparticles and their application as a highly sensitive and electrocatalytically active hydrogen peroxide sensor material. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:4842-4850. [PMID: 36398599 DOI: 10.1039/d2ay01211a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Copper acetate/silver nitrate/polyvinylpyrrolidone was first prepared into nano-hybrid silver-doped copper oxide by electrospinning, and then nano-honeycomb particles were produced through heat-treatment. For the first time, honeycomb Ag@CuO nanoparticles were prepared by electrospinning, and a H2O2 sensor was constructed by modifying the carbon paste electrode (CPE) with the honeycomb Ag@CuO nanoparticles. This work performed the structural, morphological, and phase analysis of the Ag@CuO nanoparticles by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicated the synthesis of Ag@CuO hybrid nanoparticles with high purity, and cyclic voltammetry and amperometry show that the Ag@CuO modified electrode has high electrocatalytic performances with fast voltammetric responses and a notably decreased overpotential compared to that of even the CuO modified CPE. In addition, the Ag/CuO-CPE based H2O2 sensor has the highest sensitivity of 1982.14 μA (mmol L-1)-1 cm-2, the lowest detection limit of 0.01 μmol L-1 ((S/N) = 3), and the measured linear response for H2O2 oxidation ranged from 0.05 μmol L-1 to 100 μmol L-1 and 100 μmol L-1 to 1.5 mmol L-1. The proposed method was applied to the determination of H2O2 in coconut fruit samples from canned coconut, and the satisfactory results confirmed the applicability of this sensor in practical analysis.
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Affiliation(s)
- Yong Li
- School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, PR China.
| | - Pengchong Yin
- School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, PR China.
| | - Yuxin Zhang
- School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, PR China.
| | - Ruizhu Zhang
- Henan Engineering Technology Research Center, North China University of Water Resources and Electric Power, Zhengzhou 450045, PR China
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3
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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: 21] [Impact Index Per Article: 10.5] [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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4
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Cataluminescence sensor based on Pt/NU-901 nanocomposite for rapid capture, catalysis and detection of acetone in exhaled breath. Anal Chim Acta 2022; 1206:339787. [DOI: 10.1016/j.aca.2022.339787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 02/07/2023]
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Karimadom BR, Meyerstein D, Kornweitz H. Calculating the adsorption energy of a charged adsorbent in a periodic metallic system - the case of BH 4- hydrolysis on the Ag(111) surface. Phys Chem Chem Phys 2021; 23:25667-25678. [PMID: 34755165 DOI: 10.1039/d1cp03895h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The hydrolysis of borohydride on the Ag(111) surface is explored theoretically to obtain the in-depth reaction mechanism. Many heterogeneously catalyzed reactions like this involve the adsorption of charged species on metals. DFT calculations of charged systems, with periodic boundaries, face serious problems, concerning convergence and reliability of the results. To study the heterogeneously catalyzed reactions, a simple method to calculate the adsorption energy of charged systems in metallic periodic cells is proposed. In this method, a counter ion is placed at a non-interactive distance, in an aqueous medium, so that the calculated system is neutral. Bader analysis is used to validate that the calculated couple is charged correctly. Adsorption energies of F-, Cl-, Br-, OH-, BH4-, ClO4- and H- ions on the Ag(111) surface in an aqueous medium were determined using Na+ and K+ as counter ions, to evaluate the performance of this method. The adsorption of the divalent ions S2-, Se2- and SO42- on different surfaces was studied as well. Then this method was used to explore the hydrolysis of BH4- ions, which have a high theoretical hydrogen storage capacity, on the Ag(111) surface. The results point out that during the catalytic hydrolysis only one hydrogen atom from borohydride is transferred to the surface. In the first step one hydrogen atom from BH4- is transferred to the silver surface; this H atom reacts with a hydrogen atom that is released from an adsorbed water molecule; in addition, a hydrogen molecule is released in the second step (one atom from *BH4- and one from *H2O). Thus, the mechanisms of the catalyzed reductions by BH4- and the hydrogen evolution reactions must be reconsidered.
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Affiliation(s)
| | - Dan Meyerstein
- Chemical Sciences Department, Ariel University, Ariel, Israel. .,Chemistry Department, Ben-Gurion University, Beer-Sheva, Israel
| | - Haya Kornweitz
- Chemical Sciences Department, Ariel University, Ariel, Israel.
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Bagal-Kestwal DR, Chiang BH. Tamarindus indica seed-shell nanoparticles‑silver nanoparticles-Ceratonia silique bean gum composite for copper-micro mesh grid electrode fabrication and its application for glucose detection in artificial salivary samples. Int J Biol Macromol 2021; 189:993-1007. [PMID: 34455001 DOI: 10.1016/j.ijbiomac.2021.08.148] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/16/2022]
Abstract
This study used a new approach to fabricate a glucose detection system based on nano-engineered biomaterials. The fabrication steps included strategic synthesis, integration and stabilization of biological and metal nanoparticles in superabsorbent hydrogel gum matrix. The design of the high-performance electrochemical biosensor platform includes copper-micro mesh grid electrode modified with polymer phase comprising of silver nanoparticles surface coroneted with Ceratonia silique locust bean gum (LBG), Tamarindus indica seed-shell nanoparticles and glucose oxidase (GOx). Fundamental assessment of catalytic properties of the nanobiocomposite films on copper grid probe were performed by cyclic voltammetry, amperometry, differential pulse voltammetry. Probes showed good repeatability, reproducibility, selectivity, and long-term stability. The GOx was well-immobilized and stabilized by C. siliqua nano-matrix, with 85% and 98% activity retention when stored at different condiions for 6 month and 3 months, respectively. The fabricated grid-platform exhibited linear response in a wide range of glucose concentration, with detection limit of 1.0 nM (S/N = 3) and sensitivity 38.7 mA nM-1 cm-2. The bionanomaterial-based sensor was successfully applied for ultra-low glucose detection in artificial salivary samples. The designed sensor, perhaps with further modifications, has potential for the next generation of sensing platform in various biological fluids especially for non-invasive glucose detection for diabetic patients.
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Affiliation(s)
- Dipali R Bagal-Kestwal
- Institute of Food Science and Technology, National Taiwan University, No.1, Roosevelt Road, section 4, Taipei, Taiwan, ROC.
| | - Been-Huang Chiang
- Institute of Food Science and Technology, National Taiwan University, No.1, Roosevelt Road, section 4, Taipei, Taiwan, ROC.
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Jian Fui C, Xin Ting T, Sani Sarjadi M, Sarkar SM, Musta B, Lutfor Rahman M. Bio-heterogeneous Cu(0)NC@PHA for n-aryl/alkylation at room temperature. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Hu X, Fu H, Bao M, Zhang X, Liu W, Sun X, Pan Y. Temperature mediates metabolism switching of Bacillus sp. ZT-1: Analysis of the properties and structure of exopolysaccharides. Microbiol Res 2021; 251:126839. [PMID: 34390957 DOI: 10.1016/j.micres.2021.126839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/21/2021] [Accepted: 08/02/2021] [Indexed: 10/20/2022]
Abstract
Microorganism was very sensitive to external temperature change, which also affected its normal metabolism and secretion. Low temperature exopolysaccharides (LT-EPS) and normal temperature exopolysaccharides (NT-EPS) secreted by Bacillus sp. ZT-1 mediated by temperature were studied in this paper. The total carbohydrate in the LT-EPS and NT-EPS were found to be 82.54 ± 2.56 % and 94.23 ± 1.59 % (w/w). The High Performance Liquid Chromatography (HPLC) revealed the mannose and galacturonic acid accounted for 45.52 and 23.49 % in LT-EPS, respectively. In like manner, mannose and galacturonic acid contained 43.99 and 25.24 % in NT-EPS. One-dimensional nuclear magnetic resonance (NMR) revealed the connection mode of sugar chains. NT-EPS exhibited higher viscosity, better emulsification properties and the larger molecular weight than LT-EPS. Scanning electron microscopy (SEM) showed that LT-EPS was sheet-like with sugar chain branches while NT-EPS was showed as network structure. Furthermore, the 2812 differentially expressed genes (DEGs) were analyzed by Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment and located 739 biological pathways. Finally, transcriptome analysis revealed differences in gene expression of the pentose phosphate pathway of carbohydrate metabolism might be the main reason for this difference.
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Affiliation(s)
- Xin Hu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Hongrui Fu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Mutai Bao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China.
| | - Xiuli Zhang
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Wei Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Xiaojun Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
| | - Yaping Pan
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao, 266100, China
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9
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Feng X, Zhang S, Wang F, Ma J, Xu X, Lai Q, Xu J, Fang X, Wang X. Metallic Ag Confined on SnO
2
Surface for Soot Combustion: the Influence of Ag Distribution and Dispersion on the Reactivity. ChemCatChem 2021. [DOI: 10.1002/cctc.202100041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaohui Feng
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Shijing Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Fumin Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Jun Ma
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Qiang Lai
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Junwei Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
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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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Jian Fui C, Xin Ting T, Sarjadi MS, Amin Z, Sarkar SM, Musta B, Rahman M. Highly Active Cellulose-Supported Poly(hydroxamic acid)-Cu(II) Complex for Ullmann Etherification. ACS OMEGA 2021; 6:6766-6779. [PMID: 33748590 PMCID: PMC7970499 DOI: 10.1021/acsomega.0c05840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Highly active natural pandanus-extracted cellulose-supported poly(hydroxamic acid)-Cu(II) complex 4 was synthesized. The surface of pandanus cellulose was modified through graft copolymerization using purified methyl acrylate as a monomer. Then, copolymer methyl acrylate was converted into a bidentate chelating ligand poly(hydroxamic acid) via a Loosen rearrangement in the presence of an aqueous solution of hydroxylamine. Finally, copper species were incorporated into poly(hydroxamic acid) via the adsorption process. Cu(II) complex 4 was fully characterized by Fourier transform infrared (FTIR), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray (EDX), transmission electron microscopy (TEM), inductively coupled plasma optical emission spectrometry (ICP-OES), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analyses. The cellulose-supported Cu(II) complex 4 was successfully applied (0.005 mol %) to the Ullmann etherification of aryl, benzyl halides, and phenacyl bromide with a number of aromatic phenols to provide the corresponding ethers with excellent yield [benzyl halide (70-99%); aryl halide (20-90%)]. Cu(II) complex 4 showed high stability and was easily recovered from the reaction mixture. It could be reused up to seven times without loss of its original catalytic activity. Therefore, Cu(II) complex 4 can be commercially utilized for the preparation of various ethers, and this synthetic technique could be a part in the synthesis of natural products and medicinal compounds.
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Affiliation(s)
- Choong Jian Fui
- Faculty
of Science and Natural Resources, University
Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Tang Xin Ting
- Faculty
of Science and Natural Resources, University
Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Mohd Sani Sarjadi
- Faculty
of Science and Natural Resources, University
Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Zarina Amin
- Biotechnology
Research Institute, University Malaysia
Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Shaheen M. Sarkar
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Baba Musta
- Faculty
of Science and Natural Resources, University
Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
| | - MdLutfor Rahman
- Faculty
of Science and Natural Resources, University
Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
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Angelin J, Kavitha M. Exopolysaccharides from probiotic bacteria and their health potential. Int J Biol Macromol 2020; 162:853-865. [PMID: 32585269 PMCID: PMC7308007 DOI: 10.1016/j.ijbiomac.2020.06.190] [Citation(s) in RCA: 225] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 01/06/2023]
Abstract
Exopolysaccharides (EPS) are extracellular macromolecules excreted as tightly bound capsule or loosely attached slime layer in microorganisms. They play most prominent role against desiccation, phagocytosis, cell recognition, phage attack, antibiotics or toxic compounds and osmotic stress. In the last few decades, natural polymers have gained much attention among scientific communities owing to their therapeutic potential. In particular the EPS retrieved from probiotic bacteria with varied carbohydrate compositions possess a plenty of beneficial properties. Different probiotic microbes have unique behavior in expressing their capability to display significant health promoting characteristics in the form of polysaccharides. In this new era of alternative medicines, these polysaccharides are considered as substitutes for synthetic drugs. The EPS finds applications in various fields like textiles, cosmetics, bioremediation, food and therapeutics. The present review is focused on sources, chemical composition, biosynthetic pathways of EPS and their biological potential. More attention has been given to the scientific investigations on antimicrobial, antitumor, anti-biofilm, antiviral, anti-inflammatory and immunomodulatory activities.
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Affiliation(s)
- J Angelin
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - M Kavitha
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India.
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Riaz Rajoka MS, Mehwish HM, Zhang H, Ashraf M, Fang H, Zeng X, Wu Y, Khurshid M, Zhao L, He Z. Antibacterial and antioxidant activity of exopolysaccharide mediated silver nanoparticle synthesized by Lactobacillus brevis isolated from Chinese koumiss. Colloids Surf B Biointerfaces 2020; 186:110734. [DOI: 10.1016/j.colsurfb.2019.110734] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/28/2019] [Accepted: 12/14/2019] [Indexed: 12/19/2022]
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14
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Colorimetric captopril assay based on oxidative etching-directed morphology control of silver nanoprisms. Mikrochim Acta 2020; 187:107. [DOI: 10.1007/s00604-019-4071-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 12/06/2019] [Indexed: 01/13/2023]
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15
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Khan Z, Al-Thabaiti SA. Biogenic silver nanoparticles: Green synthesis, encapsulation, thermal stability and antimicrobial activities. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111102] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Ward CS, Pan JF, Colman BP, Wang Z, Gwin CA, Williams TC, Ardis A, Gunsch CK, Hunt DE. Conserved Microbial Toxicity Responses for Acute and Chronic Silver Nanoparticle Treatments in Wetland Mesocosms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:3268-3276. [PMID: 30776221 DOI: 10.1021/acs.est.8b06654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Most studies of bacterial exposure to environmental contaminants focus on acute treatments; however, the impacts of single, high-dose exposures on microbial communities may not readily be extended to the more likely scenario of chronic, low-dose contaminant exposures. Here, in a year-long, wetland mesocosm experiment, we compared microbial community responses to pulse (single 450 mg dose of silver) and chronic (weekly 8.7 mg doses of silver for 1 year) silver nanoparticle (Ag0 NP) treatments, as well as a chronic treatment of "aged" sulfidized silver nanoparticles (Ag2S NPs). While mesocosms exposed to Ag2S NPs never differed significantly from the controls, both Ag0 NP treatments exhibited reduced microbial diversity and altered community composition; however, the effects differed in timing, duration, and magnitude. Microbial community-level impacts in the acute Ag0 NP treatment were apparent only within the first weeks and then converged on the control mesocosm composition, while chronic exposure effects were observed several months after exposures began, likely due to interactive effects of nanoparticle toxicity and winter environmental conditions. Notably, there was a high level of overlap in the taxa which exhibited significant declines (>10×) in both treatments, suggesting a conserved toxicity response for both pulse and chronic exposures. Thus, this research suggests that complex, but short-term, acute toxicological studies may provide critical, cost-effective insights into identifying microbial taxa sensitive to long-term chronic exposures to Ag NPs.
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Affiliation(s)
- Christopher S Ward
- Marine Laboratory , Duke University , Beaufort , North Carolina 28516 , United States
- Program in Environmental Health and Toxicology , Duke University , Durham , North Carolina 27708 , United States
| | - Jin-Fen Pan
- Marine Laboratory , Duke University , Beaufort , North Carolina 28516 , United States
- Key Laboratory of Marine Environment and Ecology (Ministry of Education), College of Environmental Science and Engineering , Ocean University of China , Qingdao , 266003 , P. R. China
| | - Benjamin P Colman
- Biology Department , Duke University , Durham , North Carolina 27708 , United States
| | - Zhao Wang
- Marine Laboratory , Duke University , Beaufort , North Carolina 28516 , United States
| | - Carley A Gwin
- Civil and Environmental Engineering , Duke University , Durham , North Carolina 27708, United States
| | - Tiffany C Williams
- Marine Laboratory , Duke University , Beaufort , North Carolina 28516 , United States
| | - Abby Ardis
- Marine Laboratory , Duke University , Beaufort , North Carolina 28516 , United States
| | - Claudia K Gunsch
- Civil and Environmental Engineering , Duke University , Durham , North Carolina 27708, United States
| | - Dana E Hunt
- Marine Laboratory , Duke University , Beaufort , North Carolina 28516 , United States
- Program in Environmental Health and Toxicology , Duke University , Durham , North Carolina 27708 , United States
- Biology Department , Duke University , Durham , North Carolina 27708 , United States
- Civil and Environmental Engineering , Duke University , Durham , North Carolina 27708, United States
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17
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Colman BP, Baker LF, King RS, Matson CW, Unrine JM, Marinakos SM, Gorka DE, Bernhardt ES. Dosing, Not the Dose: Comparing Chronic and Pulsed Silver Nanoparticle Exposures. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10048-10056. [PMID: 30075078 DOI: 10.1021/acs.est.8b01700] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The environmental impacts of manufactured nanoparticles are often studied using high-concentration pulse-additions of freshly synthesized nanoparticles, while predicted releases are characterized by chronic low-concentration additions of weathered particles. To test the effects in wetlands of addition rate and nanoparticle speciation on water column silver concentrations, ecosystem impacts, and silver accumulation by biota, we conducted a year-long mesocosm experiment. We compared a pulse addition of Ag0-NPs to chronic weekly additions of either Ag0-NPs or sulfidized silver nanoparticles. The initially high water column silver concentrations in the pulse treatment declined such that after 4 weeks it was lower on average than in the two chronic treatments. While the pulse caused a marked increase in dissolved methane in the first week of the experiment, the chronic treatments had smaller increases in methane concentration that were more prolonged between weeks 28-45. Much like water column silver, most organisms in chronic treatments had comparable silver concentrations to the pulse treatment after only 4 weeks, and all but one organism had similar or higher concentrations than the pulse treatment after one year. Pulse exposures thus both overestimate the intensity of short-term exposures and effects and underestimate the more realistic long-term exposure, ecosystem effects, and accumulation seen in chronic exposures.
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Affiliation(s)
- Benjamin P Colman
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
- Department of Biology , Duke University , Durham , North Carolina , United States
| | - Leanne F Baker
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
- Department of Environmental Science , Baylor University , Waco , Texas , United States
- Center for Reservoir and Aquatic Systems Research , Baylor University , Waco , Texas , United States
| | - Ryan S King
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
- Center for Reservoir and Aquatic Systems Research , Baylor University , Waco , Texas , United States
- Department of Biology , Baylor University , Waco , Texas , United States
| | - Cole W Matson
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
- Department of Environmental Science , Baylor University , Waco , Texas , United States
- Center for Reservoir and Aquatic Systems Research , Baylor University , Waco , Texas , United States
| | - Jason M Unrine
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
- Department of Plant and Soil Sciences , University of Kentucky , Lexington , Kentucky , United States
| | - Stella M Marinakos
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
| | - Danielle E Gorka
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
- Department of Chemistry , Duke University , Durham , North Carolina , United States
| | - Emily S Bernhardt
- Center for the Environmental Implications of NanoTechnology , Duke University , Durham , North Carolina , United States
- Department of Biology , Duke University , Durham , North Carolina , United States
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18
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Padmos JD, Morris DJ, Zhang P. The structure and bonding properties of tiopronin-protected silver nanoparticles as studied by X-ray absorption spectroscopy. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0674] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Thiolate-protected Ag nanoparticles (NPs) exhibit interesting physical and chemical properties which may lead to various sensing, diagnostic, and therapeutic applications. Further, understanding structure–property relationships of Ag NPs is of great interest to optimize their application. Herein, we used TEM, UV–vis, and a series of synchrotron X-ray spectroscopy techniques to probe the local structure and chemical bonding properties of thiolate-stabilized Ag NPs. Compared with other Ag nanostructures prepared under slightly modified conditions, the Ag NPs were found to have pronounced structural changes, which led to immensely different optical properties. Notably, the NPs were also found to have similar surface structure to recently elucidated Ag nanoclusters prepared with different thiolates. These findings suggest that the NP structure and optical properties can be sensitively tailored by controlling the synthetic conditions. The multi-element, multi-core excitation approach (i.e., Ag K-, Ag L3-, and S K-edges) employed in the X-ray absorption spectroscopy measurements was also demonstrated as an effective tool to uncover the NP structure from both the metal core and the ligand shell perspectives.
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Affiliation(s)
- J. Daniel Padmos
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - David J. Morris
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Peng Zhang
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
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19
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Graphene-catalyzed formation of C≡N bonds via cleavage of C-C and N-O bonds in ethanol and nitrate under room temperature. Sci Rep 2018; 8:1750. [PMID: 29379108 PMCID: PMC5789086 DOI: 10.1038/s41598-018-20238-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/15/2018] [Indexed: 11/08/2022] Open
Abstract
The cleavage of carbon-carbon bonds and the formation of carbon-nitrogen bonds play crucial roles in chemical synthesis. However, these reactions usually proceed at high temperature and involve multiple steps. Herein, we report an unusual and novel reaction catalyzed by graphene. The C-C bond in ethanol and the N-O bond in nitrate can be broken under room temperature, accompanied by the formation of the C≡N bond. We demonstrate these reactions and elucidate their mechanisms by verifying that the product is silver cyanide which was formed when mixing a solution of silver nitrate and ethanol with graphene dispersion in ethanol at room temperature. The pivotal reason for the reaction is the formation of the precipitated silver cyanide. In a broader context, this discovery opens a significant new path for the breakage of the C-C bond in ethanol and the synthesis of nitriles under mild conditions. Also, the graphene was first reported as a catalyst for the room-temperature reaction.
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20
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Su Y, Zhao Z, Li S, Liu F, Zhang Z. Rational design of a novel quaternary ZnO@ZnS/Ag@Ag2S nanojunction system for enhanced photocatalytic H2 production. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00828k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel ZnO@ZnS/Ag@Ag2S quaternary nanojunction photocatalyst has been designed for efficient solar water splitting.
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Affiliation(s)
- Yiping Su
- School of Environmental Science and Engineering
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Zhicheng Zhao
- School of Environmental Science and Engineering
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Shun Li
- School of Environmental Science and Engineering
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Fei Liu
- School of Environmental Science and Engineering
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Zuotai Zhang
- School of Environmental Science and Engineering
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control
- Southern University of Science and Technology
- Shenzhen 518055
- China
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21
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Stegemeier JP, Avellan A, Lowry GV. Effect of Initial Speciation of Copper- and Silver-Based Nanoparticles on Their Long-Term Fate and Phytoavailability in Freshwater Wetland Mesocosms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:12114-12122. [PMID: 29017014 DOI: 10.1021/acs.est.7b02972] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ag0- and CuO-engineered nanomaterials (ENMs) or their sulfidized forms are introduced into freshwater wetlands through wastewater effluent and agricultural runoff. Knowledge about the rates of transformations of these ENMs in realistic environments and the impact of the form of the incoming ENM (i.e., sulfidized or pristine) on bioavailability and fate is limited. Here, five freshwater wetland mesocosms were exposed to 3 g of total metal as CuO, CuS, Ag0, or Ag2S ENMs or soluble CuNO3 added weekly for 1 month. Total metal and metal speciation was measured in sediment and plant samples collected 1, 3, 6, and 9 months after addition. The form of the added ENM did not affect the metal distribution, and ENMs distributed similarly to added ionic Cu or Ag. For the dosing condition used, ∼50% of the added Ag or Cu metal mass was found in Egeria densa plant tissue, with the remainder primarily in the surficial sediment. Ag0 and CuO ENMs transformed quickly in sediment, with no evidence of CuO and only ∼4% of silver present as Ag0 ENM 1 week after the last ENM addition. In contrast to sediment, Ag0 and CuO ENMs were persistent in E. densa tissues for up to 9 and 6 months, respectively. The persistence of ENMs in E. densa suggests that chronic exposures, or food web transfers, for both the transformed and the initially added ENMs are possible.
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Affiliation(s)
- John P Stegemeier
- Center for the Environmental Implications of NanoTechnology (CEINT) and ‡Civil & Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Astrid Avellan
- Center for the Environmental Implications of NanoTechnology (CEINT) and ‡Civil & Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Gregory V Lowry
- Center for the Environmental Implications of NanoTechnology (CEINT) and ‡Civil & Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
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22
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Fennell Y, Ymele-Leki P, Azeezat Adegboye T, Jones KL. Impact of Sulfidation of Silver Nanoparticles on Established<i> P. aeruginosa Biofilm</i>. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/jbnb.2017.81006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Kuzmanović M, Božanić DK, Milivojević D, Ćulafić DM, Stanković S, Ballesteros C, Gonzalez-Benito J. Sodium-alginate biopolymer as a template for the synthesis of nontoxic red emitting Mn2+-doped CdS nanoparticles. RSC Adv 2017. [DOI: 10.1039/c7ra11011a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structural and optical characteristics of manganese doped cadmium sulfide nanoparticles prepared by in situ chemical synthesis using biocompatible Na-alginate biopolymer as a template is reported.
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Affiliation(s)
- M. Kuzmanović
- Department of Material Science and Engineering
- Faculty of Engineering and Architecture
- Ghent University
- Belgium
- Department of Materials Science and Engineering and Chemical Engineering
| | - D. K. Božanić
- Department of Materials Science and Engineering and Chemical Engineering
- IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés (Madrid)
- Spain
| | - D. Milivojević
- University of Belgrade
- Vinča Institute of Nuclear Sciences
- 11001 Belgrade
- Serbia
| | - D. Mitić Ćulafić
- University of Belgrade
- Faculty of Biology
- Center for Genotoxicology and Ecogenotoxicology
- 11001 Belgrade
- Serbia
| | - S. Stanković
- University of Belgrade
- Faculty of Biology
- Center for Genotoxicology and Ecogenotoxicology
- 11001 Belgrade
- Serbia
| | - C. Ballesteros
- Department of Physics
- Universidad Carlos III de Madrid
- Avenida de la Universidad 30
- 28911 Leganés (Madrid)
- Spain
| | - J. Gonzalez-Benito
- Department of Materials Science and Engineering and Chemical Engineering
- IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés (Madrid)
- Spain
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24
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Cao Q, Xiao L, Li J, Cao C, Li S, Wang J. Morphology-controlled fabrication of Ag3PO4/chitosan nanocomposites with enhanced visible-light photocatalytic performance using different molecular weight chitosan. POWDER TECHNOL 2016. [DOI: 10.1016/j.powtec.2016.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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25
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Prusty K, Swain SK. Nano CaCO3 imprinted starch hybrid polyethylhexylacrylate\polyvinylalcohol nanocomposite thin films. Carbohydr Polym 2016; 139:90-8. [DOI: 10.1016/j.carbpol.2015.12.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/13/2015] [Accepted: 12/04/2015] [Indexed: 11/17/2022]
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26
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Moore JD, Stegemeier JP, Bibby K, Marinakos SM, Lowry GV, Gregory KB. Impacts of Pristine and Transformed Ag and Cu Engineered Nanomaterials on Surficial Sediment Microbial Communities Appear Short-Lived. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:2641-51. [PMID: 26841726 DOI: 10.1021/acs.est.5b05054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Laboratory-based studies have shown that many soluble metal and metal oxide engineered nanomaterials (ENM) exert strong toxic effects on microorganisms. However, laboratory-based studies lack the complexity of natural systems and often use "as manufactured" ENMs rather than more environmentally relevant transformed ENMs, leaving open the question of whether natural ligands and seasonal variation will mitigate ENM impacts. Because ENMs will accumulate in subaquatic sediments, we examined the effects of pristine and transformed Ag and Cu ENMs on surficial sediment microbial communities in simulated freshwater wetlands. Five identical mesocosms were dosed through the water column with either Ag(0), Ag2S, CuO or CuS ENMs (nominal sizes of 4.67 ± 1.4, 18.1 ± 3.2, 31.1 ± 12, and 12.4 ± 4.1, respectively) or Cu(2+). Microbial communities were examined at 0, 7, 30, 90, 180, and 300 d using qPCR and high-throughput 16S rRNA gene sequencing. Results suggest differential short-term impacts of Ag(0) and Ag2S, similarities between CuO and CuS, and differences between Cu ENMs and Cu(2+). PICRUSt-predicted metagenomes displayed differential effects of Ag treatments on photosynthesis and of Cu treatments on methane metabolism. By 300 d, all metrics pointed to reconvergence of ENM-dosed mesocosm microbial community structure and composition, suggesting that the long-term microbial community impacts from a pulse of Ag or Cu ENMs are limited.
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Affiliation(s)
- Joe D Moore
- Civil and Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
- Center for the Environmental Implications of NanoTechnology (CEINT) , Durham, North Carolina 27708, United States
| | - John P Stegemeier
- Civil and Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
- Center for the Environmental Implications of NanoTechnology (CEINT) , Durham, North Carolina 27708, United States
| | - Kyle Bibby
- Civil and Environmental Engineering, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
- Computational and Systems Biology, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Stella M Marinakos
- Center for the Environmental Implications of NanoTechnology (CEINT) , Durham, North Carolina 27708, United States
| | - Gregory V Lowry
- Civil and Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
- Center for the Environmental Implications of NanoTechnology (CEINT) , Durham, North Carolina 27708, United States
| | - Kelvin B Gregory
- Civil and Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
- Center for the Environmental Implications of NanoTechnology (CEINT) , Durham, North Carolina 27708, United States
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27
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Cheviron P, Gouanvé F, Espuche E. Starch/silver nanocomposite: Effect of thermal treatment temperature on the morphology, oxygen and water transport properties. Carbohydr Polym 2015; 134:635-45. [DOI: 10.1016/j.carbpol.2015.07.067] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 07/17/2015] [Accepted: 07/20/2015] [Indexed: 11/16/2022]
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28
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Cheviron P, Gouanvé F, Espuche E. Green synthesis of colloid silver nanoparticles and resulting biodegradable starch/silver nanocomposites. Carbohydr Polym 2014; 108:291-8. [DOI: 10.1016/j.carbpol.2014.02.059] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/24/2014] [Accepted: 02/12/2014] [Indexed: 10/25/2022]
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29
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A novel photosynthesis of carboxymethyl starch-stabilized silver nanoparticles. ScientificWorldJournal 2014; 2014:514563. [PMID: 24672325 PMCID: PMC3929061 DOI: 10.1155/2014/514563] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 11/04/2013] [Indexed: 11/17/2022] Open
Abstract
The water soluble photoinitiator (PI) 4-(trimethyl ammonium methyl) benzophenone chloride is used for the first time in the synthesis of silver nanoparticles (AgNPs). A new green synthesis method involves using PI/UV system, carboxymethyl starch (CMS), silver nitrate, and water. A mechanism of the reduction of silver ions to AgNPs by PI/UV system as well as by the newly born aldehydic groups was proposed. The synthesis process was assessed by UV-vis spectra and TEM of AgNPs colloidal solution. The highest absorbance was obtained using CMS, PI and AgNO3 concentrations of 10 g/L, 1 g/L, and 1 g/L, respectively; 40 °C; 60 min; pH 7; and a material : liquor ratio 1 : 20. AgNPs so-obtained were stable in aqueous solution over a period of three weeks at room temperature (~25 °C) and have round shape morphology. The sizes of synthesized AgNPs were in the range of 1-21 nm and the highest counts % of these particles were for particles of 6-10 and 1-3 nm, respectively.
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30
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Juna S, Huber A. Formation of nano- and micro-structures of various botanical sources of native starches investigated employing asymmetrical flow field-flow fractionation. STARCH-STARKE 2013. [DOI: 10.1002/star.201300059] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shazia Juna
- NAWI Graz-CePol/MC (Central Polymer Laboratory/Molecular Characteristics); Institute for Chemistry, Karl-Franzens University of Graz; Graz Austria
| | - Anton Huber
- NAWI Graz-CePol/MC (Central Polymer Laboratory/Molecular Characteristics); Institute for Chemistry, Karl-Franzens University of Graz; Graz Austria
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31
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González-Campos JB, Mota-Morales JD, Kumar S, Zárate-Triviño D, Hernández-Iturriaga M, Prokhorov Y, Lepe MV, García-Carvajal ZY, Sanchez IC, Luna-Bárcenas G. New insights into the bactericidal activity of chitosan-Ag bionanocomposite: The role of the electrical conductivity. Colloids Surf B Biointerfaces 2013; 111:741-6. [DOI: 10.1016/j.colsurfb.2013.07.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 05/17/2013] [Accepted: 07/02/2013] [Indexed: 10/26/2022]
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32
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Juna S, Hayden S, Damm M, Kappe CO, Huber A. Microwave mediated preparation of nanoparticles from wx corn starch employing nanoprecipitation. STARCH-STARKE 2013. [DOI: 10.1002/star.201300067] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shazia Juna
- NAWI Graz - Central Polymer Laboratory/Molecular Characteristics (CePol/MC); Institute for Chemistry, Karl-Franzens University of Graz; Graz Austria
| | - Stephan Hayden
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC); Institute for Chemistry, Karl-Franzens University; Graz Austria
| | - Markus Damm
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC); Institute for Chemistry, Karl-Franzens University; Graz Austria
| | - Christian O. Kappe
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC); Institute for Chemistry, Karl-Franzens University; Graz Austria
| | - Anton Huber
- NAWI Graz - Central Polymer Laboratory/Molecular Characteristics (CePol/MC); Institute for Chemistry, Karl-Franzens University of Graz; Graz Austria
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33
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Abstract
Green synthesis aims to minimize the use of unsafe reactants and maximize the efficiency of synthesis process. These could be achieved by using environmentally compassionate polymers and nontoxic chemicals. Hydroxyethyl cellulose (HEC), an ecofriendly polymer, was used as both reducing and stabilizing agents in the synthesis of stable silver nanoparticles, while silver nitrate was used as a precursor and water as a solvent. The formation of silver nanoparticles was assessed by monitoring UV-vis spectra of the silver colloidal solution. The size of the nanoparticles was measured using transmission electron microscope (TEM). Reaction kinetics was followed by measuring the absorbance of silver colloidal solution at different time intervals. Optimum reaction conditions revealed that the highest absorbance was obtained using HEC : AgNO3 of 1.5 : 0.17 (g/100 cm3) at 70°C for 120 min at pH 12. The Ag0 nanoparticles colloidal solution so obtained (1000 ppm) were found stable in aqueous solution over a period of six months at room temperature (°C). The sizes of these nanoparticles were found in the range of 11–60 nm after six months of storing. FTIR spectra confirmed the interaction of both the aldehyde and OH groups in the synthesis and stabilization of silver nanoparticles.
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34
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Juna S, Hayden S, Damm M, Kappe CO, Huber A. Nanoprecipitation of native pea starches treated in alkaline media at various temperatures employing a dedicated microwave reactor. STARCH-STARKE 2013. [DOI: 10.1002/star.201300066] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shazia Juna
- NAWI Graz-CePol/MC (Central Polymer Laboratory/Molecular Characteristics); Institute for Chemistry, Karl-Franzens University of Graz; Graz Austria
| | - Stephan Hayden
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC); Institute for Chemistry, Karl-Franzens University; Graz Austria
| | - Markus Damm
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC); Institute for Chemistry, Karl-Franzens University; Graz Austria
| | - C. Oliver Kappe
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC); Institute for Chemistry, Karl-Franzens University; Graz Austria
| | - Anton Huber
- NAWI Graz-CePol/MC (Central Polymer Laboratory/Molecular Characteristics); Institute for Chemistry, Karl-Franzens University of Graz; Graz Austria
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35
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Kanmani P, Lim ST. Synthesis and structural characterization of silver nanoparticles using bacterial exopolysaccharide and its antimicrobial activity against food and multidrug resistant pathogens. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.05.011] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Kim JY, Kim KT, Lee BG, Lim BJ, Kim SD. Developmental toxicity of Japanese medaka embryos by silver nanoparticles and released ions in the presence of humic acid. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 92:57-63. [PMID: 23473953 DOI: 10.1016/j.ecoenv.2013.02.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 01/25/2013] [Accepted: 02/08/2013] [Indexed: 06/01/2023]
Abstract
The final destination point of nanoparticles is the environment, where they remain a long period; therefore, a deep understanding of the relationship between nanoparticles and the environmental factors is required. Japanese medaka embryos were exposed to two differently prepared AgNPs: freshly prepared AgNPs and aged AgNPs. With these two AgNP preparations, we studied the impacts of humic acid in terms of embryonic toxicity, as well as the behavior of AgNPs. Aged AgNPs exhibited a lower lethal concentration (LC50) value (1.44mg/L) compared to fresh AgNPs (3.53mg/L) through 96h acute toxicity tests, due to the release of silver ions, as confirmed by kinetic analysis. The presence of humic acids considerably reduced the toxicity of aged AgNPs due to complexation with silver ions. Agglomeration, induced by interactions with humic acid, might reduce the bioavailability of AgNPs to Japanese medaka embryos. This study demonstrates that aged AgNPs releasing more silver ions are more toxic than fresh AgNPs, and humic acids play a role in reducing the toxicity of aged AgNPs.
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Affiliation(s)
- Jun Y Kim
- Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheom-dan Gwagi-ro, Buk-gu, Gwangju 500-712, Republic of Korea
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Božanić DK, Luyt AS, Trandafilović LV, Djoković V. Glycogen and gold nanoparticle bioconjugates: controlled plasmon resonance via glycogen-induced nanoparticle aggregation. RSC Adv 2013. [DOI: 10.1039/c3ra40189h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Abstract
Silver sulphide, Ag2S, layers on the surface of polypropylene (PP) film was formed by chemical bath deposition method (CBD). Film samples were characterised by X-ray photoelectron spectroscopy (XPS), attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray diffraction analysis (XRD). The surface morphology, texture, and uniformity of the silver sulphide layers were formed on PP surface dependent on the number of polymer immersions in the precursor solution. XPS analysis confirmed that on the surface of the polypropylene film, a layer of Ag2S was formed. ATR-FTIR and FTIR spectra analysis showed that the surface of Ag2S layers is slightly oxidized. All prepared layers gave multiple XRD reflections, corresponding to monoclinic Ag2S (acanthite). The Ag2S layer on polypropylene was characterized as an Ag+ion selective electrode in terms of potential response and detection limit. The electrode was also tested as an end-point electrode for argentometric titration of thiamine hydrochloride.
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Božanić DK, Djoković V, Dimitrijević-Branković S, Krsmanović R, McPherson M, Nair PS, Georges MK, Radhakrishnan T. Inhibition of Microbial Growth by Silver–Starch Nanocomposite Thin Films. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 22:2343-55. [DOI: 10.1163/092050610x539532] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Dušan K. Božanić
- a Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - Vladimir Djoković
- b Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - Suzana Dimitrijević-Branković
- c Department of Bioengineering and Biotechnology, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia
| | - Radenka Krsmanović
- d Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | - Michael McPherson
- e Mcpherso Academic Consulting, PostNet Suite 194, Private Bag X2230, Mafikeng South 2791, South Africa
| | - P. Sreekumari Nair
- f Department of Chemistry Lash-Miller Chemical Laboratories, University of Toronto, ON, Canada M5S 3H6
| | - Michael K. Georges
- g Department of Chemistry, University of Toronto at Mississauga, Mississauga, ON, Canada L5L 1C6
| | - Thottackad Radhakrishnan
- h Department of Chemistry, University of Toronto at Mississauga, Mississauga, ON, Canada L5L 1C6
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Jiang J, Zhang L. Rapid Microwave‐Assisted Nonaqueous Synthesis and Growth Mechanism of AgCl/Ag, and Its Daylight‐Driven Plasmonic Photocatalysis. Chemistry 2011; 17:3710-7. [DOI: 10.1002/chem.201002951] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Indexed: 01/10/2023]
Affiliation(s)
- Jing Jiang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079 (P.R. China)
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079 (P.R. China)
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Božanić D, Dimitrijević-Branković S, Bibić N, Luyt A, Djoković V. Silver nanoparticles encapsulated in glycogen biopolymer: Morphology, optical and antimicrobial properties. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.08.070] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Pang M, Hu J, Zeng HC. Synthesis, Morphological Control, and Antibacterial Properties of Hollow/Solid Ag2S/Ag Heterodimers. J Am Chem Soc 2010; 132:10771-85. [DOI: 10.1021/ja102105q] [Citation(s) in RCA: 304] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Maolin Pang
- Department of Chemical and Biomolecular Engineering, KAUST-NUS GCR Program, and Division of Environmental Science and Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | - Jiangyong Hu
- Department of Chemical and Biomolecular Engineering, KAUST-NUS GCR Program, and Division of Environmental Science and Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | - Hua Chun Zeng
- Department of Chemical and Biomolecular Engineering, KAUST-NUS GCR Program, and Division of Environmental Science and Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
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