Photochemically Etching BiVO4 to Construct Asymmetric Heterojunction of BiVO4/BiOx Showing Efficient Photoelectrochemical Water Splitting

doi:10.1002/smtd.202201611

IMR OpenIR

	Photochemically Etching BiVO4 to Construct Asymmetric Heterojunction of BiVO4/BiOx Showing Efficient Photoelectrochemical Water Splitting
	Chen, Xiangtao 1; Zhen, Chao 2; Li, Na 1; Jia, Nan 1; Xu, Xiaoxiang 3; Wang, Lianzhou 4,5; Liu, Gang 2,6
通讯作者	Zhen, Chao(czhen@imr.ac.cn) ; Liu, Gang(gangliu@imr.ac.cn)
	2023-01-05
发表期刊	SMALL METHODS
ISSN	2366-9608
页码	8
摘要	BiVO4 as a promising semiconductor candidate of the photoanode for solar driven water oxidation always suffers from poor charge carrier transport property and photo-induced self-corrosion. Herein, by intentionally taking advantage of the photo-induced self-corrosion process, a controllable photochemical etching method is developed to rationally construct a photoanode of BiVO4/BiOx asymmetric heterojunction from faceted BiVO4 crystal arrays. Compared with the BiVO4 photoanode, the resulting BiVO4/BiOx photoanode gains over three times enhancement in short-circuit photocurrent density (approximate to 3.2 mA cm(-2)) and approximate to 75 mV negative shift of photocurrent onset potential. This is due to the formation of the strong interacted homologous heterojunction, which promotes photo-carrier separation and enlarges photovoltage across the interface. Remarkably, the photocurrent density can remain at approximate to 2.0 mA cm(-2) even after 12 h consecutive operation, while only approximate to 0.1 mA cm(-2) is left for the control photoanode of BiVO4. Moreover, the Faraday efficiency for water splitting is determined to be nearly 100% for the BiVO4/BiOx photoanode. The controllable photochemical etching process may shed light on the construction of homologous heterojunction on other photoelectrode materials that have similar properties to BiVO4.
关键词	asymmetric heterojunctions faceted BiVO4 photochemical etching photoelectrochemical water splitting
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of Liaoning Province
DOI	10.1002/smtd.202201611
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of Liaoning Province ; [2021YFA1500800] ; [52072377] ; [51825204] ; [52120105003] ; [2020192] ; [2021-MS-014]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000907858100001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175461
专题	中国科学院金属研究所
通讯作者	Zhen, Chao; Liu, Gang
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, R China, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Tongji Univ, Sch Chem Sci & Engn, Shanghai 200092, Peoples R China 4.Univ Queensland, Nanomat Ctr, Sch Chem Engn, Brisbane, Qld 4072, Australia 5.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia 6.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xiangtao,Zhen, Chao,Li, Na,et al. Photochemically Etching BiVO4 to Construct Asymmetric Heterojunction of BiVO4/BiOx Showing Efficient Photoelectrochemical Water Splitting[J]. SMALL METHODS,2023:8.
APA	Chen, Xiangtao.,Zhen, Chao.,Li, Na.,Jia, Nan.,Xu, Xiaoxiang.,...&Liu, Gang.(2023).Photochemically Etching BiVO4 to Construct Asymmetric Heterojunction of BiVO4/BiOx Showing Efficient Photoelectrochemical Water Splitting.SMALL METHODS,8.
MLA	Chen, Xiangtao,et al."Photochemically Etching BiVO4 to Construct Asymmetric Heterojunction of BiVO4/BiOx Showing Efficient Photoelectrochemical Water Splitting".SMALL METHODS (2023):8.