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da Silva RTP, Silva DO, de Oliveira PFM, Bellabarba R, Johnston P, Smit J, Holt J, Betham M, Rossi LM. Solvent-Free Aerobic Oxidative Cleavage of Methyl Oleate to Biobased Aldehydes over Mechanochemically Synthesized Supported AgAu Nanoparticles. Chempluschem 2023; 88:e202300268. [PMID: 37498229 DOI: 10.1002/cplu.202300268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 07/28/2023]
Abstract
The performance of mechanochemically synthesized supported bimetallic AgAu nanoalloy catalysts was evaluated in the oxidative cleavage of methyl oleate, a commonly available unsaturated bio-derived raw material. An extensive screening of supports (SiO2 , C, ZrO2 , Al2 O3 ), metallic ratios (Ag : Au), reaction times, temperatures, and use of solvents was carried out. The performance was optimized towards productivity and selectivity for the primary cleavage products (aldehydes and oxoesters). The optimal conditions were achieved in the absence of solvent, using Ag8 Au92 /SiO2 as catalyst, at 80 °C, reaction time of 1 h, substrate to catalyst=555 and 10 bar of molecular oxygen. A strong support effect was observed: the selectivity to aldehydes was best with silica as support, and to esters was best using zirconia. This shows not only that mechanochemical preparation of bimetallic catalysts is a powerful tool to generate useful catalyst compositions, but also that a safe, green, solventless synthesis of bio-derived products can be achieved by aerobic oxidative cleavage.
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Affiliation(s)
- Rafael T P da Silva
- Instituto de Química, Universidade de São Paulo, 05508-000, São Paulo, SP, Brazil
| | - Dagoberto O Silva
- Instituto de Química, Universidade de São Paulo, 05508-000, São Paulo, SP, Brazil
| | | | | | | | - Joost Smit
- Johnson Matthey plc, Billingham, Cleveland TS23 4EA, UK
| | - Jarle Holt
- Johnson Matthey plc, Billingham, Cleveland TS23 4EA, UK
| | | | - Liane M Rossi
- Instituto de Química, Universidade de São Paulo, 05508-000, São Paulo, SP, Brazil
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2
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Cimrová V, Eom S, Pokorná V, Kang Y, Výprachtický D. Effects of the Donor Unit on the Formation of Hybrid Layers of Donor-Acceptor Copolymers with Silver Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1830. [PMID: 37368260 DOI: 10.3390/nano13121830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/24/2023] [Accepted: 06/05/2023] [Indexed: 06/28/2023]
Abstract
Donor-acceptor (D-A) copolymers containing perylene-3,4,9,10-tetracarboxydiimide (PDI) electron-acceptor (A) units belonging to n-type semiconductors are of interest due to their many potential applications in photonics, particularly for electron-transporting layers in all-polymeric or perovskite solar cells. Combining D-A copolymers and silver nanoparticles (Ag-NPs) can further improve material properties and device performances. Hybrid layers of D-A copolymers containing PDI units and different electron-donor (D) units (9-(2-ethylhexyl)carbazole or 9,9-dioctylfluorene) with Ag-NPs were prepared electrochemically during the reduction of pristine copolymer layers. The formation of hybrid layers with Ag-NP coverage was monitored by in-situ measurement of absorption spectra. The Ag-NP coverage of up to 41% was higher in hybrid layers made of copolymer with 9-(2-ethylhexyl)carbazole D units than in those made of copolymer with 9,9-dioctylfluorene D units. The pristine and hybrid copolymer layers were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy, which proved the formation of hybrid layers with stable Ag-NPs in the metallic state with average diameters <70 nm. The influence of D units on Ag-NP diameters and coverage was revealed.
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Affiliation(s)
- Věra Cimrová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 00 Prague, Czech Republic
| | - Sangwon Eom
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
| | - Veronika Pokorná
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 00 Prague, Czech Republic
| | - Youngjong Kang
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
- Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Republic of Korea
- Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Republic of Korea
| | - Drahomír Výprachtický
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 00 Prague, Czech Republic
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3
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Preparation of Single Phase of AgSbSe2 from Sb2Se3/Se/Ag Stack. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-07488-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4
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Tang Z, Tao H, Wang X, Chen L, Song C, Lu G, Xie X, Sun J. Quasi-In Situ Synthesis of Ag NPs@m-MIL-100(Fe) for the Enhanced Photocatalytic Elimination of Flowing Xylenes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52894-52906. [PMID: 36378027 DOI: 10.1021/acsami.2c15811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The implantation of metal nanoparticles (MNPs) into metal-organic framework (MOF) hosts is a promising means to prepare high-performance photocatalysts for the degradation of gas pollutants. However, the uniform encapsulation of MNPs in MOFs is still challenging. Herein, a facile "quasi-in situ" encapsulation method is proposed by utilizing the spatial confinement effect of the colloidal network formed during the synthesis of the MIL-100(Fe) monolith [noted as m-MIL-100(Fe)]. Highly dispersed Ag NPs with an average diameter of ∼2 nm are encapsulated in the MIL-100(Fe) monolith to form a unique "watermelon-seed" structure, which ensures the large contact area between the two components and protects Ag NPs from being oxidized. The fast charge transfer between m-MIL-100(Fe) and Ag NPs enables the spatial separation of electron-hole pairs and promotes the generation of oxidative radicals. Compared with pristine m-MIL-100(Fe), the 0.2 wt % Ag@m-MIL-100(Fe) composite shows obviously enhanced photodegradation efficiencies for flowing o-xylene under both xenon (∼97%) and visible light (∼80.0%) with high stability. This work not only provides a promising Ag@m-MIL-100(Fe) material for eliminating air pollutants but also gives a versatile means for the design and synthesis of nanoparticles@MOFs composites with desired performance.
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Affiliation(s)
- Zixia Tang
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Shanghai201899, PR China
- University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai200093, China
| | - Hong Tao
- University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai200093, China
| | - Xiao Wang
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Shanghai201899, PR China
| | - Lu Chen
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Shanghai201899, PR China
| | - Chi Song
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Shanghai201899, PR China
| | - Guanhong Lu
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Shanghai201899, PR China
| | - Xiaofeng Xie
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Shanghai201899, PR China
| | - Jing Sun
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 Heshuo Road, Shanghai201899, PR China
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5
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Shao H, Li X, Zhang J, Zhao X. Peroxymonosulfate enhanced photoelectrocatalytic oxidation of organic contaminants and simultaneously cathodic recycling of silver. J Environ Sci (China) 2022; 120:74-83. [PMID: 35623774 DOI: 10.1016/j.jes.2021.08.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/13/2021] [Accepted: 08/13/2021] [Indexed: 06/15/2023]
Abstract
Degradation of organic contaminants with simultaneous recycling of Ag+ from silver-containing organic wastewater such as photographic effluents is desired. Although photoelectrocatalysis (PEC) technology is a good candidate for this type of wastewater, its reaction kinetics still needs to be improved. Herein, peroxymonosulfate (PMS) was employed to enhance the PEC kinetics for oxidation of phenol (PhOH) at the anode and reduction of Ag+ at the cathode. The degradation efficiency of phenol (PhOH, 0.1 mmol/L) was increased from 42.8% to 96.9% by adding 5 mmol/L PMS at a potential of 0.25 V. Meanwhile, the Ag (by wt%) deposited on the cathode was 28.1% (Ag2O) in PEC process, while that of Ag (by wt%) was 69.7% (Ag0) by adding PMS. According to the electrochemistry analysis, PMS, as photoelectrons acceptor, enhances the separation efficiency of charges and the direct h+ oxidation of PhOH at the photoanode. Meantime, the increasing cathode potential avoided H2 evolution and strongly alkaline at the surface of cathode, thus enabling the deposition of Ag+ in the form of metallic silver with the help of PMS. In addition, PMS combined with PEC process was effective in treating photographic effluents.
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Affiliation(s)
- Huixin Shao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xia Li
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Capital Co. Ltd., Beijing 100028, China
| | - Juanjuan Zhang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu Zhao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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7
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Chen Z, Wang X, Wang L, Wu YA. Ag@Pd bimetallic structures for enhanced electrocatalytic CO 2 conversion to CO: an interplay between the strain effect and ligand effect. NANOSCALE 2022; 14:11187-11196. [PMID: 35904075 DOI: 10.1039/d2nr03079a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Electrochemical CO2 reduction reactions provide a promising path to effectively convert CO2 into valuable chemicals and fuels for industries. Among the many CO2 conversion catalysts, Pd stands out as a promising catalyst for effective CO2 to CO conversion. Here, using the misfit strain strategy, Ag@Pd bimetallic nanoparticles with different Pd overlayer contents were prepared as CO2 reduction catalysts. By varying the Pd overlayer content, all the Ag@Pd bimetallic nanoparticles exhibited superior CO2 conversion performance over their Pd and Ag nanoparticle counterparts. An optimal Pd-to-Ag ratio of 1.5 : 1 yielded the highest CO faradaic efficiency of 94.3% at -0.65 V vs. RHE with a high CO specific current density of 3.9 mA cm-2. It was found that the Pd content can substantially affect the interplay between the strain effect and ligand effect, resulting in optimized binding properties of the reaction intermediates on the catalyst surface, thereby enhancing the CO2 reduction performance.
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Affiliation(s)
- Zuolong Chen
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Lei Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Yimin A Wu
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interfaces Foundry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
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8
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Yang G, Zhou Z, Zhang H, Zhang Y, Peng Z, Gong P, Wang X, Cui C. Improved Anti-Vulcanization and Bonding Performance of a Silver Alloy Bonding Wire by a Cathodic Passivation Treatment with Palladium. MATERIALS 2022; 15:ma15072355. [PMID: 35407687 PMCID: PMC8999782 DOI: 10.3390/ma15072355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/19/2022] [Accepted: 03/20/2022] [Indexed: 02/06/2023]
Abstract
As a traditional interconnect material, silver alloy bonding wires are widely used in electronic packaging, but their propensity to vulcanize quickly has not been sufficiently addressed. The current surface anti-oxidation and anti-sulfidation treatments are often accompanied by a decline in bonding performance, which hinders the use of silver alloy bonding wires in new applications. In the present paper, we develop a new cathodic passivation treatment in a Pd-containing solution for silver bonding wires, which not only significantly improves their vulcanization resistance, but also maintains their bonding performance. The surface of the treated wires remains unaffected after vulcanization in 0.3 μg/m3 of ammonium sulfide for 60 min. Compared to a Pd-free passivation treatment, the bonding strength of the wire passivated with the Pd-containing solution improves from 0.20 to 0.27 N. XPS analysis confirms the existence of Pd on the surface of the wire. The solder ball formed an obtuse angle instead of a sharp angle on the pad, which is beneficial for bonding strength.
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Affiliation(s)
- Guannan Yang
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China; (G.Y.); (Z.Z.); (H.Z.)
- Jihua Laboratory, Foshan 528225, China
| | - Zhiqiang Zhou
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China; (G.Y.); (Z.Z.); (H.Z.)
| | - Haide Zhang
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China; (G.Y.); (Z.Z.); (H.Z.)
| | - Yu Zhang
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China; (G.Y.); (Z.Z.); (H.Z.)
- Jihua Laboratory, Foshan 528225, China
- Correspondence: (Y.Z.); (Z.P.); (C.C.)
| | - Zhen Peng
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
- Correspondence: (Y.Z.); (Z.P.); (C.C.)
| | - Pan Gong
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Xin Wang
- Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science, Hebei University of Technology, Tianjin 300401, China;
| | - Chengqiang Cui
- State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China; (G.Y.); (Z.Z.); (H.Z.)
- Jihua Laboratory, Foshan 528225, China
- Correspondence: (Y.Z.); (Z.P.); (C.C.)
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9
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Deposition of metallic silver from versatile amidinate precursors for use in functional materials. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221075301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Silver (Ag) amidinate metal organic decomposition precursors of the type: [Ag2((ArN)2C(H))2] (Ar = 2,6-dimethylphenyl (1), 2,6-diethylphenyl (2) and 2,6-diisopropylphenyl (3)) have been used for the first time in the deposition of Ag films on glass with multiple functionalities with potential application in optical/biological sensors or for use in electronic circuitry. Precursors 1–3 were isolated from the reaction of silver acetate with the appropriate ligand in a 1:2 stoichiometry and were characterized by 1H and 13C{1H} NMR, thermal gravimetric analysis and single crystal X-ray diffraction for 2. Single-layer depositions at 200 °C on glass substrates via spin coating produced transparent (>90% transmittance) coatings, with well-defined Ag nanoparticles. Multi-layer depositions at 200 °C on glass had a metallic lustre and were found to be conductive ( ρ = 0.916–1.83 × 10−6 Ωm). All films were strongly adhered and displayed excellent coverage of the substrate. Ag films deposited from 1 to 3 were analysed by grazing incidence X-ray diffraction, X-ray photoelectron spectroscopy, energy-dispersive X-ray analysis and scanning electron microscopy, with optical properties determined by UV-Vis spectroscopy.
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10
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da Silva RTP, Córdoba De Torresi SI, de Oliveira PFM. Mechanochemical Strategies for the Preparation of SiO 2-Supported AgAu Nanoalloy Catalysts. Front Chem 2022; 10:836597. [PMID: 35186886 PMCID: PMC8847606 DOI: 10.3389/fchem.2022.836597] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/05/2022] [Indexed: 11/18/2022] Open
Abstract
Silver-gold nanoalloys were prepared from their metal salts precursors through bottom-up mechanochemical synthesis, using one-pot or galvanic replacement reaction strategies. The nanostructures were prepared over amorphous SiO2 as an inert supporting material, facilitating their stabilization without the use of any stabilizing agent. The nanomaterials were extensively characterized, confirming the formation of the bimetallic nanostructures. The nanoalloys were tested as catalysts in the hydrogenation of 2-nitroaniline and exhibited up to 4-fold the rate constant and up to 37% increased conversion compared to the respective single metal nanoparticles. Our approach is advantageous to produce nanoparticles with clean surfaces with available catalytic sites, directly in the solid-state and in an environmentally friendly manner.
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Stuart B, Stan G, Popa A, Carrington M, Zgura I, Necsulescu M, Grant D. New solutions for combatting implant bacterial infection based on silver nano-dispersed and gallium incorporated phosphate bioactive glass sputtered films: A preliminary study. Bioact Mater 2022; 8:325-340. [PMID: 34541404 PMCID: PMC8427212 DOI: 10.1016/j.bioactmat.2021.05.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/29/2021] [Accepted: 05/29/2021] [Indexed: 12/26/2022] Open
Abstract
Ag/Ga were incorporated into resorbable orthopaedic phosphate bioactive glasses (PBG, containing P, Ca, Mg, Na, and Fe) thin films to demonstrate their potential to limit growth of Staphylococcus aureus and Escherichia coli in post-operative prosthetic implantation. Dual target consecutive co-sputtering was uniquely employed to produce a 46 nm Ag:PBG composite observed by high resolution TEM to consist of uniformly dispersed ~5 nm metallic Ag nano-particles in a glass matrix. Ga3+ was integrated into a phosphate glass preform target which was magnetron sputtered to film thicknesses of ~400 or 1400 nm. All coatings exhibited high surface energy of 75.4-77.3 mN/m, attributed to the presence of hydrolytic P-O-P structural surface bonds. Degradation profiles obtained in deionized water, nutrient broth and cell culture medium showed varying ion release profiles, whereby Ga release was measured in 1400 nm coating by ICP-MS to be ~6, 27, and 4 ppm respectively, fully dissolving by 24 h. Solubility of Ag nanoparticles was only observed in nutrient broth (~9 ppm by 24 h). Quantification of colony forming units after 24 h showed encouraging antibacterial efficacy towards both S. aureus (4-log reduction for Ag:PBG and 6-log reduction for Ga-PBG≈1400 nm) and E. coli (5-log reduction for all physical vapour deposited layers) strains. Human Hs27 fibroblast and mesenchymal stem cell line in vitro tests indicated good cytocompatibility for all sputtered layers, with a marginal cell proliferation inertia in the case of the Ag:PBG composite thin film. The study therefore highlights the (i) significant manufacturing development via the controlled inclusion of metallic nanoparticles into a PBG glass matrix by dual consecutive target co-sputtering and (ii) potential of PBG resorbable thin-film structures to incorporate and release cytocompatible/antibacterial oxides. Both architectures showed prospective bio-functional performance for a future generation of endo-osseous implant-type coatings.
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Affiliation(s)
- B.W. Stuart
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - G.E. Stan
- National Institute of Materials Physics, Magurele, RO, 077125, Romania
| | - A.C. Popa
- National Institute of Materials Physics, Magurele, RO, 077125, Romania
- Army Centre for Medical Research, Bucharest, RO, 010195, Romania
| | - M.J. Carrington
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - I. Zgura
- National Institute of Materials Physics, Magurele, RO, 077125, Romania
| | - M. Necsulescu
- Army Centre for Medical Research, Bucharest, RO, 010195, Romania
| | - D.M. Grant
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
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Zhang X, Huo H, Ma K, Zhao Z. Reduced graphene oxide-supported smart plasmonic AgPtPd porous nanoparticles for high-performance electrochemical detection of 2,4,6-trinitrotoluene. NEW J CHEM 2022. [DOI: 10.1039/d2nj00434h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Smart plasmonic AgPtPd NPs/rGO exhibited a wide linear range for TNT from 0.1 to 8 ppm with a sensing limit of 0.95 ppb. The remarkable features are probably attributed to the integrated advantages of the plasmonic properties and synergistic effect.
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Affiliation(s)
- Xinxin Zhang
- School of Material Science and Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Hongyue Huo
- School of Material Science and Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Kongshuo Ma
- State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China
| | - Zhenlu Zhao
- School of Material Science and Engineering, University of Jinan, Jinan 250022, Shandong, China
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, China
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13
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Liu J, Wang M, Dipalo MC, Zhuang J, Shi W, Wang X. Ternary hybrid CuO-PMA-Ag sub-1 nm nanosheet heterostructures. Chem Sci 2021; 12:11490-11494. [PMID: 34667553 PMCID: PMC8447927 DOI: 10.1039/d1sc02548a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/23/2021] [Indexed: 01/26/2023] Open
Abstract
Multi-component two-dimensional (2D) hybrid sub-1 nm heterostructures could potentially possess many novel properties. Controlling the site-selective distribution of nanoparticles (NPs) at the edge of 2D hybrid nanomaterial substrates is desirable but it remains a great challenge. Herein, we realized for the first time the preparation of ternary hybrid CuO-phosphomolybdic acid-Ag sub-1 nm nanosheet heterostructures (CuO-PMA-Ag THSNHs), where the Ag NPs selectively distributed at the edge of 2D hybrid CuO-PMA sub-1 nm nanosheets (SNSs). And the obtained CuO-PMA-Ag THSNHs as the catalyst exhibited excellent catalytic activity in alkene epoxidation. Furthermore, molecular dynamics (MD) simulations demonstrated that the SNSs interact with Ag NPs to form stable nanoheterostructures. This work would pave the way for the synthesis and broader applications of multi-component 2D hybrid sub-1 nm heterostructures.
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Affiliation(s)
- Junli Liu
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Mingxin Wang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Maria C Dipalo
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Jing Zhuang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University Beijing 100084 China
| | - Wenxiong Shi
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology Tianjin 300387 China
| | - Xun Wang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University Beijing 100084 China
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Wu X, Xie W, Chen J, Wang X, Liu X, Li Y, Peng K, Ohnuki T, Ye J. Iodide ion removal from artificial iodine-containing solution using Ag-Ag2O modified Al2O3 particles prepared by electroless plating. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Cimrová V, Eom S, Pokorná V, Kang Y, Výprachtický D. Hybrid Layers of Donor-Acceptor Copolymers with Homogenous Silver Nanoparticle Coverage for Photonic Applications. Polymers (Basel) 2021; 13:polym13030439. [PMID: 33573074 PMCID: PMC7866533 DOI: 10.3390/polym13030439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 11/26/2022] Open
Abstract
Hybrid layers of donor-acceptor (D-A) copolymers containing N,N′-dialkylperylene-3,4,9,10-tetracarboxydiimide electron-acceptor units covered with silver nanoparticles (Ag-NPs) were prepared by electrochemical doping of pristine layers during reduction processes. In situ optical absorption spectra of the layers were recorded during the formation of Ag-NP coverage. The hybrid layers were characterized by absorption spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectroscopy (EDX). In the absorption spectra of the hybrid layers, a surface plasmon band characteristic of Ag-NPs appeared. Significant improvements in light absorption due to the plasmonic effects of Ag NPs were observed. Stable Ag-NPs with an average diameter of 41–63 nm were formed on the surface, as proven by SEM and XPS. The Ag-NP coverage and size depended on the hybrid layer preparation conditions and on the copolymer composition. The metallic character of the Ag-NPs was proven by XPS. The location in the surface layer was further confirmed by EDX analysis. To the best of our knowledge, this is the first report on such hybrid layers having the potential for a variety of photonic and electronic applications.
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Affiliation(s)
- Věra Cimrová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic; (V.P.); (D.V.)
- Correspondence:
| | - Sangwon Eom
- Department of Chemistry, Hanyang University, Seoul 04763, Korea; (S.E.); (Y.K.)
| | - Veronika Pokorná
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic; (V.P.); (D.V.)
| | - Youngjong Kang
- Department of Chemistry, Hanyang University, Seoul 04763, Korea; (S.E.); (Y.K.)
- Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Korea
| | - Drahomír Výprachtický
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic; (V.P.); (D.V.)
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16
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Zheng Y, Zhai Y, Tu M, Huang X, Shu M, Guo X, Ying Y, Wu Y, Wen Y, Yang H. Bimetallic alloy and semiconductor support synergistic interaction effects for superior electrochemical catalysis. NANOSCALE 2020; 12:4719-4728. [PMID: 32049072 DOI: 10.1039/c9nr09608f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The design and fabrication of economically viable anode catalysts for the methanol oxidation reaction (MOR) have been challenging issues in direct methanol fuel cells (DMFCs) over the decades. In this work, a composite electrochemical catalyst of Pd-coupled Ag and ZnO for the possible replacement of expensive Pt catalysts in DMFCs is successfully prepared. The as-made Pd@Ag/ZnO exhibits specific activity, which is 1.8-fold, 2.8-fold, and 4.6-fold higher than that of a Pd/ZnO catalyst, 20% Pd/C catalyst and Pd black, respectively. The improvement of the catalytic mechanism is likely due to the synergistic interaction between Pd@Ag and ZnO. The density functional theory (DFT) calculation results confirm that Ag doped into Pd weakens the adsorption of CO, dramatically improving the capability to resist CO poisoning.
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Affiliation(s)
- Yunshan Zheng
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Yan Zhai
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Maomao Tu
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Xinhua Huang
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Mingcong Shu
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Xiaoyu Guo
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Ye Ying
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Yiping Wu
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Ying Wen
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
| | - Haifeng Yang
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai, 200234, P. R. China.
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17
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Ke H, Wei W, Yang Y, Wu H, Zhang YQ, Xie G, Chen S. A Trinuclear Zinc Coordination Cluster Exhibiting Fluorescence, Colorimetric Sensitivity, and Recycling of Silver Ion and Detection of Cupric Ion. Inorg Chem 2020; 59:2833-2842. [PMID: 32039592 DOI: 10.1021/acs.inorgchem.9b03169] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The detection and reusage of transition-metal ions play a crucial role in human health and environmental protection. Recently, various analytical methods and substances have been successfully applied to probe or sense silver ions; however, rare representative examples have been presented regarding the simultaneous detection of silver and silver recycling with the elemental silver powder form. Herein, an unparalleled sensing mechanism for silver ions and recycling silver in its elemental form is exemplified by a fluorescent trinuclear zinc coordination cluster possessing the dual function of colorimetric sensing of silver and responding cupric ions. A Schiff-base-based trinuclear zinc coordination cluster, 1, with formula Zn3(L1)2(CH3COO)2(H2O)2, has been successfully synthesized by the initial exploration of multidentate ligand H2L1-((E)-2,4-di-tert-butyl-6-((2-hydroxy-3-methoxybenzy-lidene)amino)phenol) with various metal ions under self-assembly reactions. Complex 1 is highly fluorescent in solution and as a solid, in addition to acting as a fluorescence sensor toward AgI in ethanol media. Compound 1 displays distinctive sensing of AgI through the fluorescence quenching effect at 576 nm and signal augment at 446 nm over 11 kinds of cations in the absence of interference. The proposed sensing mechanism is attributed to the ligands in 1 which interact with AgI; the ligands undergo oxidation cyclization reaction, leading to the formation of 2 with the formula Zn3(L2)4(CH3COO)2·2CH3CH2OH·H2O, and AgI reduction to elemental Ag powder. Compound 1 presents specific selectivity and sensitivity for AgI in ethanolic solution with a detection limit of 0.1722 μM. The orange color of 1 changes to colorless during the mixing of a small amount of AgI, revealing its potential practical application in naked-eye detection of AgI. Furthermore, 2 exhibits obvious fluorescence emission at 448 nm (λex = 380 nm) and selectively responds to CuII over 11 kinds of metal ions with the fluorescence "turn-off" owing to the formation of 3 in ethanolic solution; it also has a detection limit of 0.0226 μM.
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Affiliation(s)
- Hongshan Ke
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Wen Wei
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Yongsheng Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Haipeng Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China
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18
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Yang Z, Wu C, Kanamori K, Kamei T, Shimada T, Nakanishi K. On-site formation of small Ag nanoparticles on superhydrophobic mesoporous silica for antibacterial application. NEW J CHEM 2020. [DOI: 10.1039/d0nj02502j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A superhydrophobic mesoporous silica material loaded with on-site formed small Ag nanoparticles has been prepared via surface modification with octadecylsilane (C18H37SiH3) and subsequent reduction of silver ions with residual hydrido groups on-site.
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Affiliation(s)
- Zhu Yang
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto
- Japan
| | - Chunhua Wu
- College of Food Science
- Fujian Agriculture and Forestry University
- Fuzhou 350002
- China
| | - Kazuyoshi Kanamori
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto
- Japan
| | | | - Toyoshi Shimada
- Institute for Integrated Cell-Material Sciences
- Kyoto University
- Kyoto 606-8501
- Japan
| | - Kazuki Nakanishi
- Institute of Materials and Systems for Sustainability
- Nagoya University
- Nagoya
- Japan
- Institute for Integrated Cell-Material Sciences
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19
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Zhai Y, Zheng Y, Ma Z, Cai Y, Wang F, Guo X, Wen Y, Yang H. Synergistic Enhancement Effect for Boosting Raman Detection Sensitivity of Antibiotics. ACS Sens 2019; 4:2958-2965. [PMID: 31533426 DOI: 10.1021/acssensors.9b01436] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, a two-step method is used to prepare a regenerative three-dimensional (3D) ZnO/Ag@Au substrate for developing a superior sensitive surface enhanced Raman scattering (SERS) method for detecting antibiotics. A great electromagnetic enhancement is observed from the as-prepared composite substrate, which is triggered by tuning the electron distribution of metals and semiconductor metal oxide. The strong interaction between target sample and the huge surface area of ZnO/Ag@Au composite promotes the charge transfer to produce promising chemical enhancement. The synergistic physical and chemical enhancement mechanisms are validated by density functional theory and finite difference time domain simulation. Additionally, the presence of light "echo effect" in the 3D structure of ZnO support could also amplify the efficiency of light excitation for Raman scattering. The above-stated merits benefit to boost the Raman scattering detection sensitivity for real samples. The ZnO/Ag@Au-based SERS substrate could detect rhodamine 6G molecules with an enhancement factor of up to 1.48 × 109 and the lowest detectable concentration of 10-10 M. As a real application, antibiotics sulfapyridine in milk is determined by using the proposed SERS protocol, and the limit of detection at 1 × 10-9 M could be reached. As a prospective, the ZnO/Ag@Au-based SERS method would be extended for food safety and biomedicine analysis.
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Affiliation(s)
- Yan Zhai
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yunshan Zheng
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Zhiyuan Ma
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yanzheng Cai
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Feng Wang
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Xiaoyu Guo
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Ying Wen
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Haifeng Yang
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
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20
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Separation of Ag and Cu from Their Aqueous Thiosulfate Complexes by UV-C Irradiation. METALS 2019. [DOI: 10.3390/met9111178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In recent years, there has been renewed interest in the use of thiosulfate as a substitute for cyanide in silver leaching. Copper thiosulfate leaching without ammonia was applied to extract silver from silver sulfide, resulting in the production of Ag–Cu polymetallic thiosulfate complexes in solutions. It is necessary to separate Ag–Cu polymetallic thiosulfate complexes with the purposes of silver recovery and copper recycling. In this paper, the feasibility study on the use of UV-C irradiation to separate Ag–Cu polymetallic thiosulfate complexes was investigated based on the different photosensitivity of silver and copper. First, a kinetic study on the photolysis of silver and copper thiosulfate complexes by UV-C was investigated, indicating that the reactions follow first-order kinetics. The rate constant reactions were calculated, and it decreased with solution concentrations. On the other hand, the photoproducts of the silver and copper thiosulfate complexes were characterized by XRD and XPS in order to confirm the phase and chemical composition. It indicated that the silver photoproducts are Ag2S, S, Ag and the copper photoproducts are Cu2S, CuS, CuO, Cu, S. Finally, the four-step continuous separation of Ag–Cu polymetallic thiosulfate complexes by UV-C irradiation was investigated. The silver component was recovered with the accumulated recovery ratio of 97%, and the copper component was recycled with the accumulated recycle ratio of 51%, which made it possible for silver recovery and copper recycling.
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21
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Gupta A, Chowdhury RK, Ray SK, Srivastava SK. Selective photoresponse of plasmonic silver nanoparticle decorated Bi 2Se 3 nanosheets. NANOTECHNOLOGY 2019; 30:435204. [PMID: 31320602 DOI: 10.1088/1361-6528/ab3382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The plasmon-enhanced photoresponse properties of a Ag nanoparticle decorated Bi2Se3 nanosheet (AGBS)/p-Si heterojunction device have been studied. The Ag nanoparticles, Bi2Se3 nanosheets, and AGBS nanocomposite are synthesized chemically. Microscopic investigations, ultimately of the AGBS nanocomposite, reveal that the Bi2Se3 nanosheets of thickness ∼20 nm and lateral dimension ∼1 μm are decorated with Ag nanoparticles of sizes 20-40 nm in the nanocomposite. The x-ray diffraction pattern of AGBS shows that apart from being in a metallic state, the Ag in the AGBS is also in the form of compounds with Bi, Se, and additionally O. This observation is further complemented by the x-ray photoelectron spectrum, which shows the presence of Ag0 and Ag+ states of Ag in AGBS. The UV-visible absorption spectra show the plasmonic peak of the Ag nanoparticles occurs at 420 nm; the peak is shifted to ∼500 nm in AGBS due to the modified dielectric environment of the nanoparticles. The AGBS/p-Si heterojunction shows excellent photoresponse properties, with a responsivity of 0.28 A/W, a fairly high detectivity of 4 × 1010 Jones, and an EQE of 71% under 10 V reverse bias at a 500 nm wavelength. The plasmon enhanced photoresponse at the selective wavelength makes this material attractive for high performance optoelectronic devices.
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Affiliation(s)
- Anu Gupta
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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22
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Prasad MS, Dutt VGV, Kumar KKP, Atchuta SR, Anbazhagan V, Sakthivel S. A functional Ag-TiO 2 nanocomposite solar selective absorber with antimicrobial activity by photochemical reduction process. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 199:111626. [PMID: 31622788 DOI: 10.1016/j.jphotobiol.2019.111626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 09/03/2019] [Accepted: 09/10/2019] [Indexed: 11/26/2022]
Abstract
A functional nanocomposite coating developed by wet chemical route in a photochemical reduction process will be a good candidate for low temperature solar thermal application. The low-temperature curable cermet comprises of two different type of nanoparticles, generated by photocatalytic reduction of silver ions under the sunlight with the aid of crystalline TiO2 (~8 nm) nanoparticles. The optimized base absorber layer of Ag-TiO2 nanocomposite exhibited absorptance (α) of 0.90 and emittance (ε) of 0.18 at 200 °C. Further to improve the optical properties a second layer of MgF2 has been added to get high selective (α/ε = 0.93/0.19 at 200 °C) nature. In addition, the coating was demonstrated to possess an antimicrobial activity against both Gram-negative and Gram-positive bacteria. The presented work will provide a new insight into the spectrally selective absorbers and its antimicrobial nature, which may useful for water disinfection, hot water, industrial heating and swimming pool applications.
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Affiliation(s)
- M Shiva Prasad
- Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy, and New Materials, Balapur PO, Hyderabad 500 005, India
| | - V G Vasavi Dutt
- Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy, and New Materials, Balapur PO, Hyderabad 500 005, India
| | - K K Phani Kumar
- Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy, and New Materials, Balapur PO, Hyderabad 500 005, India
| | - S R Atchuta
- Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy, and New Materials, Balapur PO, Hyderabad 500 005, India
| | - V Anbazhagan
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, India
| | - S Sakthivel
- Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy, and New Materials, Balapur PO, Hyderabad 500 005, India.
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23
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Joo JH, Shin H, Kwon K, Hong S, Ryu HJ, Choi Y, Lee JS. Aqueous synthesis of highly monodisperse sub-100 nm AgCl nanospheres/cubes and their plasmonic nanomesh replicas as visible-light photocatalysts and single SERS probes. NANOTECHNOLOGY 2019; 30:295604. [PMID: 30943465 DOI: 10.1088/1361-6528/ab15b2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Despite the distinctive electrochemical and photocatalytic properties of nanostructured silver chloride (AgCl), the shape- and size-dependence of their properties have not been thoroughly investigated to date. The most substantial reason responsible for this incomplete study and the subsequent limited applications is the failure in controlling the structure of AgCl nanomaterials, mainly owing to the challenging synthetic conditions including organic phase and high reaction temperature. In this work, we reported a rapid one-pot room-temperature aqueous synthesis of highly monodisperse sub-100 nm AgCl nanomaterials with various shapes and sizes by controlling the precursor (Ag+ and AuCl4 -) ratios. The remaining unreacted metal precursors (Ag+ and AuCl4 -) used to produce AgClNC were subsequently reduced by ascorbic acid on the surface of the synthesized AgCl nanomaterials to form Ag/Au bimetallic nanomesh structures (AgClNC#AuAgCMs and SMs). After the removal of the AgCl nanotemplates, only nanomesh structures (AuAgCMs and SMs) were obtained. Importantly, we successfully decreased the size of the AgCl nanomaterials which were replicated into bimetallic spherical and cubic nanomesh structures that were small enough (∼100 nm) to show intense surface-plasmon-absorption bands. Based on these unique chemical and physical properties, we could take advantage of the plasmonic photocatalysis properties of the complex comprising semiconducting AgCl/metallic nanomesh replica for the complete removal of the environmentally harmful Cr6+ in the presence of sacrificial agents such as formic acid. Finally, the novel bimetallic nanomesh structures proved themselves to exhibit intense surface-enhanced Raman scattering properties in a single-particle enhancing the electromagnetic field.
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Affiliation(s)
- Jang Ho Joo
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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24
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Rus YB, Galmiche L, Audebert P, Courty A, Maisonhaute E, Miomandre F. Electrodeposition of Silver Nanoparticles on Reduced Graphene Functionalized by Pyridine-Pyridazine Units: Application to Surface-Enhanced Raman Spectroscopy and Electrocatalysis. ChemistrySelect 2019. [DOI: 10.1002/slct.201802130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yahdi Bin Rus
- Ecole Normale Supérieure Paris-Saclay; CNRS, PPSM, 61 Avenue Président Wilson; 94235 Cachan France
| | - Laurent Galmiche
- Ecole Normale Supérieure Paris-Saclay; CNRS, PPSM, 61 Avenue Président Wilson; 94235 Cachan France
| | - Pierre Audebert
- Ecole Normale Supérieure Paris-Saclay; CNRS, PPSM, 61 Avenue Président Wilson; 94235 Cachan France
| | - Alexa Courty
- Sorbonne Université; CNRS, Laboratoire MONARIS; F-75005, Paris France
| | - Emmanuel Maisonhaute
- Sorbonne Université; CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, LISE; F-75005, Paris France
| | - Fabien Miomandre
- Ecole Normale Supérieure Paris-Saclay; CNRS, PPSM, 61 Avenue Président Wilson; 94235 Cachan France
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25
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Ren GQ, Pei GX, Ren YJ, Liu KP, Chen ZQ, Yang JY, Su Y, Liu XY, Li WZ, Zhang T. Effect of group IB metals on the dehydrogenation of propane to propylene over anti-sintering Pt/MgAl2O4. J Catal 2018. [DOI: 10.1016/j.jcat.2018.08.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Electrochemical battery-type supercapacitor based on chemosynthesized Cu2S Ag2S composite electrode. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.11.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Regiel-Futyra A, Kus-Liśkiewicz M, Sebastian V, Irusta S, Arruebo M, Kyzioł A, Stochel G. Development of noncytotoxic silver-chitosan nanocomposites for efficient control of biofilm forming microbes. RSC Adv 2017; 7:52398-52413. [PMID: 29308194 PMCID: PMC5735359 DOI: 10.1039/c7ra08359a] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 11/02/2017] [Indexed: 01/05/2023] Open
Abstract
Severe bacterial and fungal infections have become a major clinical and public health concern. Nowadays, additional efforts are needed to develop effective antimicrobial materials that are not harmful to human cells. This work describes the synthesis and characterization of chitosan-ascorbic acid-silver nanocomposites as films exhibiting high antimicrobial activity and non-cytotoxicity towards human cells. The reductive and stabilizing activity of both the biocompatible polymer chitosan and ascorbic acid were used in the synthesis of silver nanoparticles (AgNPs). Herein, we propose an improved composite synthesis based on medium average molecular weight chitosan with a high deacetylation degree, that together with ascorbic acid gave films with a uniform distribution of small AgNPs (<10 nm) exhibiting high antimicrobial activity against biofilm forming bacterial and fungal strains of Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Candida albicans. At the same time, the resulting solid nanocomposites showed, at the same doses, reduced or totally excluded cytotoxicity on mammalian somatic and tumoral cells. Data obtained in the present study suggest that adequately designed chitosan-silver nanocomposites are powerful and promising materials for reducing pathogenic microorganism-associated infections without harmful effects towards mammalian cells.
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Affiliation(s)
- Anna Regiel-Futyra
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland. ;
| | - Małgorzata Kus-Liśkiewicz
- Faculty of Biotechnology, Biotechnology Centre for Applied and Fundamental Sciences, University of Rzeszów, Sokołowska 26, Kolbuszowa, 36-100, Poland
| | - Victor Sebastian
- Department of Chemical Engineering, Nanoscience Institute of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain.
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 50018 Zaragoza, Spain
| | - Silvia Irusta
- Department of Chemical Engineering, Nanoscience Institute of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain.
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 50018 Zaragoza, Spain
| | - Manuel Arruebo
- Department of Chemical Engineering, Nanoscience Institute of Aragon (INA), University of Zaragoza, 50018 Zaragoza, Spain.
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 50018 Zaragoza, Spain
| | - Agnieszka Kyzioł
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland. ;
| | - Grażyna Stochel
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland. ;
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28
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Li Z, Meng J, Wang W, Wang Z, Li M, Chen T, Liu CJ. The room temperature electron reduction for the preparation of silver nanoparticles on cotton with high antimicrobial activity. Carbohydr Polym 2017; 161:270-276. [DOI: 10.1016/j.carbpol.2017.01.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/23/2016] [Accepted: 01/04/2017] [Indexed: 10/20/2022]
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29
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Wang J, Li J, Guo G, Wang Q, Tang J, Zhao Y, Qin H, Wahafu T, Shen H, Liu X, Zhang X. Silver-nanoparticles-modified biomaterial surface resistant to staphylococcus: new insight into the antimicrobial action of silver. Sci Rep 2016; 6:32699. [PMID: 27599568 PMCID: PMC5013400 DOI: 10.1038/srep32699] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 08/12/2016] [Indexed: 01/29/2023] Open
Abstract
Titanium implants are widely used clinically, but postoperative implant infection remains a potential severe complication. The purpose of this study was to investigate the antibacterial activity of nano-silver(Ag)-functionalized Ti surfaces against epidemic Staphylococcus from the perspective of the regulation of biofilm-related genes and based on a bacteria-cell co-culture study. To achieve this goal, two representative epidemic Staphylococcus strains, Staphylococcus epidermidis (S. epidermidis, RP62A) and Staphylococcus aureus (S. aureus, USA 300), were used, and it was found that an Ag-nanoparticle-modified Ti surface could regulate the expression levels of biofilm-related genes (icaA and icaR for S. epidermidis; fnbA and fnbB for S. aureus) to inhibit bacterial adhesion and biofilm formation. Moreover, a novel bacteria-fibroblast co-culture study revealed that the incorporation of Ag nanoparticles on such a surface can help mammalian cells to survive, adhere and spread more successfully than Staphylococcus. Therefore, the modified surface was demonstrated to possess a good anti-infective capability against both sessile bacteria and planktonic bacteria through synergy between the effects of Ag nanoparticles and ion release. This work provides new insight into the antimicrobial action and mechanism of Ag-nanoparticle-functionalized Ti surfaces with bacteria-killing and cell-assisting capabilities and paves the way towards better satisfying the clinical needs.
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Affiliation(s)
- Jiaxing Wang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Jinhua Li
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Geyong Guo
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Qiaojie Wang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Jin Tang
- Department of Clinical Laboratory, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Yaochao Zhao
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Hui Qin
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Tuerhongjiang Wahafu
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Hao Shen
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Xianlong Zhang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
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Qiu X, Liu Q, Song M, Huang C. Hydrogenation of nitroarenes into aromatic amines over Ag@BCN colloidal catalysts. J Colloid Interface Sci 2016; 477:131-7. [PMID: 27254255 DOI: 10.1016/j.jcis.2016.05.043] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 05/22/2016] [Accepted: 05/23/2016] [Indexed: 11/30/2022]
Abstract
The present work reports that two-dimension layered ternary boron carbon nitrogen nanosheets can serve as good carriers to support and disperse noble metal nanoparticles. The Ag@BCN colloids have thus been prepared by attaching Ag nanoparticles on the surfaces of BCN nanosheets. The detailed structures of the Ag@BCN samples were investigated by X-ray diffraction, transmission electron microscopy, atomic force microscope, infrared, and X-ray photoelectron spectroscopy. It is found that the surface NH groups of BCN nanosheets are beneficial for the attachment of Ag nanopaprticles. Compared with the conventional organic capping compounds, the two dimensional planar BCN nanosheets endow the attached nanoparticle with the high active surfaces. Moreover, the hydrogenation of nitroarenes into the corresponding aromatic amines can be highly achieved over Ag@BCN colloids by NaBH4. In particular, the apparent activation energy of the conversion reaction of p-nitroaniline to p-phenylenediamine was found to be 76.0kJ/mol over the Ag@BCN colloids with 3wt% Ag content. Our results may provide a new approach for the design noble metal based composites and find the practical application for the hydrogenation of nitroarenes.
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Affiliation(s)
- Xiaoqing Qiu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China
| | - Qiuwen Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China
| | - MingXia Song
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science &Technology, Nanjing 210044, China
| | - Caijin Huang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China.
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He H, Wang H, Li K, Zhu J, Liu J, Meng X, Shen X, Zeng X, Cai W. Green and Tunable Decoration of Graphene with Spherical Nanoparticles Based on Laser Ablation in Water: A Case of Ag Nanoparticle/Graphene Oxide Sheet Composites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1667-1673. [PMID: 26840791 DOI: 10.1021/acs.langmuir.5b03527] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A simple and green strategy is presented to decorate graphene with nanoparticles, based on laser ablation of targets in graphene auqeous solution. Ag and graphene oxide (GO) are chosen as model materials. The surface of GO sheets is strongly anchored with spherical Ag nanoparticles. The density and size of the Ag nanoparticles can be easily tuned by laser ablation conditions. Further, the GO sheets can be decorated with other nanoparticles from simple metals or semiconductors to multicomponent hybrids. Additionally, the Ag nanoparticle/GO sheet colloids can be utilized as blocks to build three-dimensional structures, such as sandwich membranes by evaporation-induced self-assembly. These graphene-based composite materials could be very useful in catalysis, sensors, and nanodevices. Particularly, the Ag nanoparticle/GO sheet sandwich composite membranes exhibit excellent surface-enhanced Raman scattering performance and possess the huge potential in trace-detecting persistent organic pollutants in the environment.
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Affiliation(s)
- Hui He
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Haibo Wang
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Kai Li
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Jun Zhu
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Jianshuang Liu
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Xiangdong Meng
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Xiaoshuang Shen
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Xianghua Zeng
- College of Physics Science and Technology, Yangzhou University , Yangzhou 225002, P. R. China
| | - Weiping Cai
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China
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Luo Y, Yu S, Li B, Dong L, Wang F, Fan M, Zhang F. Synthesis of (Ag,F)-modified anatase TiO2 nanosheets and their enhanced photocatalytic activity. NEW J CHEM 2016. [DOI: 10.1039/c5nj02544c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong interactions between Ag nanoparticles and TiO2 nanosheets can improve the photocatalytic activity of TiO2 nanosheets.
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Affiliation(s)
- Yidan Luo
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- China
| | - Shuohan Yu
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- China
| | - Bin Li
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- China
| | - Lihui Dong
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- China
| | - Fan Wang
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- China
| | - Minguang Fan
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- China
| | - Feiyue Zhang
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- China
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33
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Shen Z, Liu B, Pareek V, Wang S, Li X, Liu L, Liu S. Sustainable synthesis of highly efficient sunlight-driven Ag embedded AgCl photocatalysts. RSC Adv 2015. [DOI: 10.1039/c5ra17696d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microbe-free broth synthesis was performed under solar light to give Ag nanoparticle embedded AgCl in 5 minutes with superior performance than P25 for organic pollutant degradation.
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Affiliation(s)
- Z. Shen
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - B. Liu
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
| | - V. Pareek
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - S. Wang
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - X. Li
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
| | - L. Liu
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - S. Liu
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
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34
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Yu S, Li B, Luo Y, Dong L, Fan M, Zhang F. Preparation of Ag‐Modified (B,P)‐Codoped TiO
2
Hollow Spheres with Enhanced Photocatalytic Activity. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301388] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shuohan Yu
- Guangxi Key Laboratory Petrochemical Rescource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China, http://www.gxu.edu.cn/
| | - Bin Li
- Guangxi Key Laboratory Petrochemical Rescource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China, http://www.gxu.edu.cn/
| | - Yidan Luo
- Guangxi Key Laboratory Petrochemical Rescource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China, http://www.gxu.edu.cn/
| | - Lihui Dong
- Guangxi Key Laboratory Petrochemical Rescource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China, http://www.gxu.edu.cn/
| | - Minguang Fan
- Guangxi Key Laboratory Petrochemical Rescource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China, http://www.gxu.edu.cn/
| | - Feiyue Zhang
- Guangxi Key Laboratory Petrochemical Rescource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China, http://www.gxu.edu.cn/
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35
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Wang W, Yang M, Wang Z, Yan J, Liu C. Silver nanoparticle aggregates by room temperature electron reduction: preparation and characterization. RSC Adv 2014. [DOI: 10.1039/c4ra11803k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Silver nanoparticle aggregates were fabricated on AAO substrate via room temperature electron reduction. Their color depends on the size of the aggregate, rather than on the size of single AgNPs.
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Affiliation(s)
- Wei Wang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072, China
| | - Manman Yang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072, China
| | - Zongyuan Wang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072, China
| | - Jinmao Yan
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072, China
| | - Changjun Liu
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072, China
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36
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Jordan RG, Liu Y, Qiu SL, Ginatempo B, Bruno E, Stocks GM, Shelton WA. Electronic structures of disordered Ag-Mg alloys. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:11459-11465. [PMID: 9975275 DOI: 10.1103/physrevb.50.11459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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