Au@TiO2 nanocomposites for the catalytic degradation of methyl orange and methylene blue: An electron relay effect

Title
Au@TiO2 nanocomposites for the catalytic degradation of methyl orange and methylene blue: An electron relay effect
Author(s)
조무환칸모하마드만숩이진태
Keywords
TIO2-ASSISTED PHOTOCATALYTIC DEGRADATION; ELECTROCHEMICALLY ACTIVE BIOFILM; GOLD NANOPARTICLES; BIOGENIC APPROACH; AZO DYES; TIO2; LIGHT; WATER; NANOFIBERS; REDUCTION
Issue Date
201407
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.20, no.4, pp.1584 - 1590
Abstract
Au@TiO2 nanocomposites were used for the catalytic degradation of methyl orange and methylene blue by NaBH4. A detail pathway for step by step reduction, oxidation and complete mineralization of intermediates into the respective end-products was established by UV-vis spectroscopy, chemical oxygen demand, ion chromatography and cyclic voltammetry (CV). CV studies confirmed that the dyes were reduced and oxidized to the end-products by NaBH4 in the presence of Au@TiO2 nanocomposites and O-2(center dot), (OH)-O-center dot and HO2 center dot radicals generated in situ. Results suggest that Au@TiO2 nanocomposites not only assist in the decolorization of dyes, but also promote their complete mineralization into harmless end-products. (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/31606http://dx.doi.org/10.1016/j.jiec.2013.08.002
ISSN
1226-086X
Appears in Collections:
공과대학 > 화학공학부 > Articles
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