Reducing Graphene Oxide on a Visible-Light BiVO4 Photocatalyst for an Enhanced Photoelectrochemical Water Splitting

被引：773

作者：

Ng, Yun Hau ^{[1
]}

Iwase, Akihide ^{[1
]}

Kudo, Akihiko ^{[2
]}

Amal, Rose ^{[1
]}

机构：

[1] Univ New S Wales, Sch Chem Engn, ARC Ctr Excellence Funct Nanomat, Sydney, NSW 2052, Australia

[2] Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2010年 / 1卷 / 17期

基金：

澳大利亚研究理事会;

关键词：

TIO2; THIN-FILM; ANCHORING SEMICONDUCTOR; METAL NANOPARTICLES; ELECTRON-TRANSFER; REDUCTION; TRANSPORT; DECOMPOSITION; NANOSHEETS; COMPOSITE;

D O I：

10.1021/jz100978u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bismuth vanadate (BiVO4) is incorporated with reduced,graphene oxide (RGO) using a facile single-step photocatalytic reaction to improve its photoresponse in visible light. Remarkable 10-fold enhancement in photoelectrochemical water splitting reaction is observed on BiVO4-RGO composite compared with pure BiVO4 under visible illumination. This improvement is attributed to the longer electron lifetime of excited BiVO4 as the electrons are injected to RGO instantly at the site of generation, leading to a minimized charge recombination. Improved contact between BiVO4 particles with transparent conducting electrode using RGO scaffold also contributes to this photoresponse enhancement.

引用

页码：2607 / 2612

页数：6

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