Facial boron incorporation in hematite photoanode for enhanced photoelectrochemical water oxidation

doi:10.1016/j.jphotochem.2017.08.045

CORC > 化学研究所 > 中国科学院化学研究所

	Facial boron incorporation in hematite photoanode for enhanced photoelectrochemical water oxidation
	Liu, Anan 1,2; Zhang, Yuchao 1,2; Ma, Wanhong 1,2; Song, Wenjing 1,2; Chen, Chuncheng 1,2; Zhao, Jincai 1,2
刊名	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
	2018-03-15
卷号	355 页码:290-297
关键词	Photoelectrochemical Water Splitting Hematite Boron Oxygen Vacancy
ISSN号	1010-6030
DOI	10.1016/j.jphotochem.2017.08.045
英文摘要	Hematite (alpha-Fe2O3) is a promising photoanode material for light-driven water splitting to make solar fuels. Herein, boron incorporated hematite photoanodes are successfully fabricated by a simple impregnation treatment in borate solution before annealing the iron oxyhydroxide (FeOOH) precursor. X-ray diffraction, Raman and X-ray photoelectron spectroscopies revealed regional enrichment of boron and oxygen vacancy near the outmost surface of the photoanode, forming a unique heterostructure. The boron modified photoanodes exhibited significantly improved photoelectrochemical (PEC) water oxidation efficiency, with up to 37 times enhancement in photocurrent density, approaching 1.12 mA cm(-2) at 1.23 V-RHE under AM 1.5 G illumination. Electrochemical impedance spectroscopy demonstrated a more favorable hole transfer process in the modified photoanode, which can be ascribed to the surface heterostructure induced build-in electric field, as well as the increase in carrier density introduced by oxygen vacancy. (C) 2017 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000428227500043
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46029]
专题	中国科学院化学研究所
通讯作者	Song, Wenjing; Zhao, Jincai
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, Key Lab Photochem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Anan,Zhang, Yuchao,Ma, Wanhong,et al. Facial boron incorporation in hematite photoanode for enhanced photoelectrochemical water oxidation[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,2018,355:290-297.
APA	Liu, Anan,Zhang, Yuchao,Ma, Wanhong,Song, Wenjing,Chen, Chuncheng,&Zhao, Jincai.(2018).Facial boron incorporation in hematite photoanode for enhanced photoelectrochemical water oxidation.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,355,290-297.
MLA	Liu, Anan,et al."Facial boron incorporation in hematite photoanode for enhanced photoelectrochemical water oxidation".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 355(2018):290-297.