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

被引：772

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

共 40 条

[1] Evaluation of solution-processed reduced graphene oxide films as transparent conductors [J].

Becerril, Hdctor A. ;

Mao, Jie ;

Liu, Zunfeng ;

Stoltenberg, Randall M. ;

Bao, Zhenan ;

Chen, Yongsheng .

ACS NANO, 2008, 2 (03) :463-470

[2] Dense TiO2 thin film:: photoelectrochemical and photocatalytic properties [J].

Gan, W. Y. ;

Chiang, K. ;

Brungs, M. ;

Amal, R. ;

Zhao, H. .

INTERNATIONAL JOURNAL OF NANOTECHNOLOGY, 2007, 4 (05) :574-587

[3] Novel TiO2 thin film with non-UV activated superwetting and antifogging behaviours [J].

Gan, Wee Yong ;

Lam, Sai Wei ;

Chiang, Ken ;

Amal, Rose ;

Zhao, Huijun ;

Brungs, Michael Paul .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (10) :952-954

[4] Photoelectrocatalytic activity of mesoporous TiO2 thin film electrodes [J].

Gan, Wee Yong ;

Zhao, Huijun ;

Amal, Rose .

APPLIED CATALYSIS A-GENERAL, 2009, 354 (1-2) :8-16

[5] Enhance the optical absorptivity of nanocrystalline TiO2 film with high molar extinction coefficient ruthenium sensitizers for high performance dye-sensitized solar cells [J].

Gao, Feifei ;

Wang, Yuan ;

Shi, Dong ;

Zhang, Jing ;

Wang, Mingkui ;

Jing, Xiaoyan ;

Humphry-Baker, Robin ;

Wang, Peng ;

Zakeeruddin, Shaik M. ;

Graetzel, Michael .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (32) :10720-10728

[6] PHOTOELECTROCHEMICAL STUDIES OF COLLOIDAL TIO2 FILMS - THE EFFECT OF OXYGEN STUDIED BY PHOTOCURRENT TRANSIENTS [J].

HAGFELDT, A ;

LINDSTROM, H ;

SODERGREN, S ;

LINDQUIST, SE .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1995, 381 (1-2) :39-46

[7] PREPARATION OF GRAPHITIC OXIDE [J].

HUMMERS, WS ;

OFFEMAN, RE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (06) :1339-1339

[8] Photoelectrochemical water splitting using visible-light-responsive BiVO4 fine particles prepared in an aqueous acetic acid solution [J].

Iwase, Akihide ;

Kudo, Akihiko .

JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (35) :7536-7542

[9] A Simple Preparation Method of Visible-Light-Driven BiVO4 Photocatalysts From Oxide Starting Materials (Bi2O3 and V2O5) and Their Photocatalytic Activities [J].

Iwase, Akihide ;

Kato, Hideki ;

Kudo, Akihiko .

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 2010, 132 (02) :0211061-0211065

[10] Graphene-Based Nanoarchitectures. Anchoring Semiconductor and Metal Nanoparticles on a Two-Dimensional Carbon Support [J].

Kamat, Prashant V. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (02) :520-527

← 1 2 3 4 →