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学科主题: 物理化学
题名: Cobalt Phosphate Group Modified Hematite Nanorod Array as Photoanode for Efficient Solar Water Splitting
作者: Fu, Li1, 2;  Yu, Hongmei1;  Zhang, Changkun1, 2;  Shao, Zhigang1;  Yi, Baolian1
通讯作者: 俞红梅
关键词: Hematite nanorod arrays ;  Cobalt phosphate group ;  Photoelectrochemical ;  Solar water splitting
刊名: ELECTROCHIMICA ACTA
发表日期: 2014-08-01
DOI: 10.1016/j.electacta.2014.05.094
卷: 136, 页:363-369
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: DNL03
项目归属: DNL0301
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
资助者: 1,1
研究领域[WOS]: Electrochemistry
英文摘要: Hydrogen production from solar and photoelectrochemical water splitting based on modified nanostructure hematite is investigated for sustainable energy development. Herein, nanorod hematite arrays are prepared by adjusted-hydrothermal method with a diameter of 30 nm. Phosphate group and cobalt ions are deposited on the surface of hematite by chemical immersion process to improve its photoelectrochemical performance and speed up the oxygen evolution reaction in water splitting. The CoPi-modified alpha-Fe2O3 nanorod arrays (NAs) show a greatly enhanced electrochemical and photoelectrochemical property with a photocurrent density 270 mu A cm(-2) at 1.23 V (vs. RHE) for FeCoPi-4 compared with 20 mu A cm(-2) for untreated alpha-Fe2O3 NAs. The effect of phosphate groups and cobalt ions on the alpha-Fe2O3 NAs are both investigated. The Co (II) ion is connected closely with the alpha-Fe2O3 surface through phosphate groups by XPS detection. The phosphate enhances the transport of electron from alpha-Fe2O3 to Co ion. The high performance demonstrated in photoelectrochemical test indicates that CoPi-modified alpha-Fe2O3 NAs is a potential photoelectrocatalyst for water splitting. (C) 2014 Elsevier Ltd. All rights reserved.
关键词[WOS]: OXIDATION ;  PHOTOELECTRODES ;  OXYGEN ;  FILM
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000340320800044
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119700
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Fuel Cells, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Fu, Li,Yu, Hongmei,Zhang, Changkun,et al. Cobalt Phosphate Group Modified Hematite Nanorod Array as Photoanode for Efficient Solar Water Splitting[J]. ELECTROCHIMICA ACTA,2014,136:363-369.
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