Enhanced optical, visible light catalytic and electrochemical properties of Au@TiO2 nanocomposites

Title
Enhanced optical, visible light catalytic and electrochemical properties of Au@TiO2 nanocomposites
Author(s)
조무환이진태칸모하마드만숩사지드안자리
Keywords
TITANIUM-DIOXIDE NANOCRYSTALS; PHOTOCATALYTIC ACTIVITY; GOLD NANOPARTICLES; PLASMON RESONANCE; TIO2; DEGRADATION; UV; NANOELECTRODES; ABSORPTION; TRANSITION
Issue Date
201311
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.19, no.6, pp.1845 - 1850
Abstract
Au@TiO2 nanocomposites and pure TiO2 were successfully used to know the effect of Au on TiO2 and their comparative optical, visible light catalytic and electrochemical activities were investigated. Optical parameters such as band gap energy (E-g= 2.4 eV), absorption coefficient (alpha), refractive index (n) and dielectric constants (sigma) have been determined using different methods. Visible light (lambda = similar to 590 nm) catalytic activity of Au@TiO2 nanocomposites was performed for reducing methyl orange (MO) under visible light irradiation. CV, EIS and DPV studies demonstrate that Au@TiO2 nanocomposites exhibit redox behavior, charged its surface by accumulating electrons, store and release the electrons. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/28653http://dx.doi.org/10.1016/j.jiec.2013.02.030
ISSN
1226-086X
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공과대학 > 화학공학부 > Articles
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