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

文献类型：期刊论文

作者Chen, Xiangtao3; Zhen, Chao4; Li, Na3; Jia, Nan3; Xu, Xiaoxiang5; Wang, Lianzhou1,6; Liu, Gang2,4
刊名SMALL METHODS
出版日期2023-01-05
页码8
ISSN号2366-9608
关键词asymmetric heterojunctions faceted BiVO4 photochemical etching photoelectrochemical water splitting
DOI10.1002/smtd.202201611
通讯作者Zhen, Chao(czhen@imr.ac.cn) ; Liu, Gang(gangliu@imr.ac.cn)
英文摘要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.
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
语种英语
出版者WILEY-V C H VERLAG GMBH
WOS记录号WOS:000907858100001
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/175459]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhen, Chao; Liu, Gang
作者单位1.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, R China, Shenyang 110819, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
5.Tongji Univ, Sch Chem Sci & Engn, Shanghai 200092, Peoples R China
6.Univ Queensland, Nanomat Ctr, Sch Chem Engn, Brisbane, Qld 4072, Australia
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.

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来源：金属研究所

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