Visible light-driven photocatalytic and photoelectrochemical studies of Ag-SnO2 nanocomposites synthesized using an electrochemically active biofilm

Title
Visible light-driven photocatalytic and photoelectrochemical studies of Ag-SnO2 nanocomposites synthesized using an electrochemically active biofilm
Author(s)
조무환사지드안자리칸모하마드만숩모드안사리이진태
Keywords
METAL-OXIDE; NANOSTRUCTURES; NANOPARTICLES; DEGRADATION; PERFORMANCE; GENERATION; WATER; NANOMATERIALS; ENHANCEMENT; KINETICS
Issue Date
201406
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v.4, no.49, pp.26013 - 26021
Abstract
Ag-SnO2 nanocomposites (1 mM and 3 mM) were synthesized in water at room temperature using an electrochemically active biofilm. The resulting nanocomposites were characterized by X-ray diffraction, transmission electron microscopy, diffuse reflectance spectroscopy, photoluminescence spectroscopy and X-ray photoelectron spectroscopy. The Ag-SnO2 nanocomposites exhibited enhanced photocatalytic activity under visible light irradiation for the degradation of methyl orange, methylene blue, 4-nitrophenol and 2-chlorophenol compared with pure SnO2 nanostructures. Photoelectrochemical measurements, such as electrochemical impedance spectroscopy, linear scan voltammetry and differential pulse voltammetry in the dark and under visible light irradiation, further supported the visible light activity of the Ag-SnO2 nanocomposites. These results showed that the Ag nanoparticles induced visible light activity and facilitated efficient charge separation in the Ag-SnO2 nanocomposites, thereby improving the photocatalytic and photoelectrochemical performance.
URI
http://hdl.handle.net/YU.REPOSITORY/31967http://dx.doi.org/10.1039/c4ra03448a
ISSN
2046-2069
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공과대학 > 화학공학부 > Articles
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