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A composite photocatalyst of CdS nanoparticles deposited on TiO2 nanosheets

Title
A composite photocatalyst of CdS nanoparticles deposited on TiO2 nanosheets
Authors
Jang, JSChoi, SHPark, HChoi, WLee, JS최원용
Date Issued
Jan-2006
Publisher
AMER SCIENTIFIC PUBLISHERS
Abstract
A nanocomposite photocatalyst consisting of deposited CdS nanoparticles on TiO2 nanosheets was fabricated by a simple one-pot method. The contact between two phases was maximized by making a composite structure of TiO2 nanosheet decorated with CdS nanoparticles. The composite photocatalyst showed higher photoactivity for hydrogen production from aqueous Na2S/Na2SO3 solution and decomposition of methylene blue under visible light irradiation (lambda >= 420 nm) compared with single component CdS nanoparticles or a physical mixture of CdS nanoparticles and TiO2 nanorods. The intentional formation of nanoscale heterojunctions between two phases appears beneficial for inducing an efficient electron-hole separation.
Keywords
CdS; TiO2; photocatalyst; hydrogen; nanoparticle-nanosheet composite; INTERPARTICLE ELECTRON-TRANSFER; PARTICLES
URI
http://oasis.postech.ac.kr/handle/2014.oak/23685
DOI
10.1166/JNN.2006.073
ISSN
1533-4880
Article Type
PROCEEDINGS PAPER
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