Carbon-doped In2O3 films for photoelectrochemical hydrogen production

被引：58

作者：

Sun, Yanping ^{[1
]}

Murphy, Carl J. ^{[1
]}

Reyes-Gil, Karla R. ^{[1
]}

Reyes-Garcia, Enrique A. ^{[1
]}

Lilly, Justin P. ^{[1
]}

Raftery, Daniel ^{[1
]}

机构：

[1] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 21期

基金：

美国国家科学基金会;

关键词：

In2O3; Photoelectrochemical hydrogen production; Photocatalyst; Water splitting; Anion doping; NMR; XPS;

D O I：

10.1016/j.ijhydene.2008.07.100

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：

Carbon-doped In2O3 films were synthesized by spray pyrolysis and evaluated for photoelectrocatalysis. All C-doped films showed cubic structure, and XPS confirmed carbon's presence and content. C-13 SSNMR showed the presence of carbonate-type species. C-doped In2O3, compared to undoped, showed increased absorption in the 350-500 nm range with a red shift in the band gap transition. The photoactivity was evaluated under near-UV and visible light irradiation. The C-doped films exhibited photocurrent densities up to 1 mA/cm(2), with a high contribution (40%) from visible light irradiation. Under the same irradiation conditions, C-doped In2O3 produced much greater photocurrent densities than the undoped films. Photocurrent densities of the C-doped films were determined as a function of the dopant source, its concentration, and film thickness. These results indicate the potential for further development of In2O3 photocatalysts, and provide useful information towards understanding the structure and enhanced photoelectrochemical properties of these new materials. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：5967 / 5974

页数：8

共 55 条

[1] Photoelectrochemical properties of n-incorporated ZnO films deposited by reactive RF magnetron sputtering [J].