Catalytic effect of Bi5+ in enhanced solar water splitting of tetragonal BiV0.8Mo0.2O4

被引：13

作者：

Antony, Rajini P. ^{[1
]}

Baikie, Tom ^{[2
]}

Chiam, Sing Yang ^{[3
]}

Ren, Yi ^{[3
]}

Prabhakar, Rajiv Ramanujam ^{[2
]}

Batabyal, Sudip K. ^{[2
]}

Loo, Say Chye Joachim ^{[1
]}

Barber, James ^{[4
]}

Wong, Lydia Helena ^{[1
,3
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore, Singapore

[2] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Res Techno Plaza, Singapore 637553, Singapore

[3] ASTAR, IMRE, 3 Res Link, Singapore 117602, Singapore

[4] Imperial Coll London, Div Mol Biosci, London, England

来源：

APPLIED CATALYSIS A-GENERAL | 2016年 / 526卷

关键词：

Photoelectrochemical water splitting; Solar water oxidation; Bismuth vanadate; Phase transition; Tetragonal scheelite; MICROWAVE DIELECTRIC-PROPERTIES; VISIBLE-LIGHT-DRIVEN; X-RAY PHOTOELECTRON; DOPED BIVO4; PHOTOCATALYTIC PERFORMANCE; MOLYBDENUM SUBSTITUTION; PHASE EVOLUTION; O-2; EVOLUTION; TEMPERATURE; SEPARATION;

D O I：

10.1016/j.apcata.2016.07.022

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：

Improved photoelectrochemical activity for tetragonal BiV0.8Mo0.2O4 fabricated by hydrothermal synthesis is reported in the present study. The enhanced water oxidation efficiency is attributed to the formation of cation vacancies (Bi5+)/oxygen interstitials due to high amount of Mo doping. Efficient charge transport and electron hole separation for water oxidation using BiVa(8)Mo(0.2)O(4) photoanode was supported by electrochemical impedance investigations and open circuit photovoltage measurements. The present study gives a significant insight into the role of nonstoichiometry related efficient water oxidation using tetragonal BiVO4. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：21 / 27

页数：7

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