Facile synthesis of carbon-coated hematite nanostructures for solar water splitting

被引：117

作者：

Deng, Jiujun ^{[1
]}

Lv, Xiaoxin ^{[1
]}

Gao, Jing ^{[1
]}

Pu, Aiwu ^{[1
]}

Li, Ming ^{[1
]}

Sun, Xuhui ^{[1
]}

Zhong, Jun ^{[1
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat Lab FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Soochow Univ Western Univ Ctr Synchrotron Radiat, Suzhou, Peoples R China

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2013年 / 6卷 / 06期

基金：

中国国家自然科学基金;

关键词：

FEATURE SIZE; ELECTRODES; OXIDATION; FILMS; PHOTOANODES;

D O I：

10.1039/c3ee00066d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Carbon-coated hematite nanostructures for solar water splitting were prepared by a simple pyrolysis of ferrocene which showed a remarkable photocurrent of 2.1 mA cm(-2) at 1.23 V vs. RHE, compared to a value of 0.5 mA cm(-2) for hematite without the carbon layer. The carbon layer is a few nm thick covering the surface of hematite nanostructures. X-Ray photoelectron spectroscopy and X-ray absorption spectroscopy revealed that the electronic structure of hematite was significantly modified with the existence of oxygen vacancy, which was responsible for the remarkable photocurrent. The carbon layer plays an important role for the appearance of oxygen vacancy. The simple and cheap method could be scaled up easily which may pave the way for the practical application for efficient solar water splitting.

引用

页码：1965 / 1970

页数：6

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