期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 37, 期 12, 页码 9566-9575出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.03.118
关键词
Ti-Fe2O3; CNTs; Doping; Electrodeposion; Photoelctrochemical properties
资金
- National Natural Science Foundation of China [21003051, 21043005]
- Fundamental Research Funds for the Central Universities [2009ZM0253]
Functional carbon nanotubes (CNTs) were incorporated into Ti-doped Fe2O3 thin films by a facile, one-step co-electrodeposition method. The films were characterized by X-ray diffraction, scanning electron microscopy, UV-visible absorption, and X-ray photoelectron spectroscopy. The introduction of CNTs results in a better absorption in visible region and greatly enhances the photoelectrochemical properties of the Ti-Fe2O3 films. The improved photoelectrochemical properties of the CNTs and Ti co-doped Fe2O3 films are due to the charge equilibration which interplays between the Ti-Fe2O3 and CNTs. The effect of CNTs to mediate fast charge transfer and to retard charge recombination rate in the composites is also demonstrated by kinetics analysis and electrochemical impedance spectroscopy. The influence of different groups-modified CNTs and different content of CNTs was also studied. The highest photocurrent is 4.5 mA/cm(2) at 1.23 V (vs. RHE) obtained by incorporating 0.10 mg/mL amino-group modified CNTs in the Ti-Fe2O3 film. The amino-functionalized CNTs doped film exhibits the highest photoelectric response compared with those doped by the pristine and acid-treated CNTs under the same conditions, which can be ascribed to the better hydrophilicity and dispersibility of the amino-functionalized CNTs. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据