New BiVO4 Dual Photoanodes with Enriched Oxygen Vacancies for Efficient Solar-Driven Water Splitting

IMR OpenIR

	New BiVO4 Dual Photoanodes with Enriched Oxygen Vacancies for Efficient Solar-Driven Water Splitting
	Wang, SC; Chen, P; Bai, Y; Yun, JH; Liu, G; Wang, LZ; Wang, LZ (reprint author), Univ Queensland, Nanomat Ctr, Sch Chem Engn, Brisbane, Qld 4072, Australia.; Wang, LZ (reprint author), Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia.; Liu, G (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Liu, G (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
	2018-05-17
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
卷号	30 期号:20 页码:-
摘要	Bismuth vanadate (BiVO4) is a promising photoanode material for photo-electrochemical (PEC) water splitting. However, owing to the short carrier diffusion length, the trade-off between sufficient light absorption and efficient charge separation often leads to poor PEC performance. Herein, a new electrodeposition process is developed to prepare bismuth oxide precursor films, which can be converted to transparent BiVO4 films with well-controlled oxygen vacancies via a mild thermal treatment process. The optimized BiVO4 film exhibits an excellent back illumination charge separation efficiency mainly due to the presence of enriched oxygen vacancies which act as shallow donors. By loading FeOOH/NiOOH as the cocatalysts, the BiVO4 dual photoanodes exhibit a remarkable and highly stable photocurrent density of 5.87 mA cm(-2) at 1.23 V versus the reversible hydrogen electrode under AM 1.5 G illumination. An artificial leaf composed of the BiVO4/FeOOH/NiOOH dual photoanodes and a single sealed perovskite solar cell delivers a solar-to-hydrogen conversion efficiency as high as 6.5% for unbiased water splitting.; Bismuth vanadate (BiVO4) is a promising photoanode material for photo-electrochemical (PEC) water splitting. However, owing to the short carrier diffusion length, the trade-off between sufficient light absorption and efficient charge separation often leads to poor PEC performance. Herein, a new electrodeposition process is developed to prepare bismuth oxide precursor films, which can be converted to transparent BiVO4 films with well-controlled oxygen vacancies via a mild thermal treatment process. The optimized BiVO4 film exhibits an excellent back illumination charge separation efficiency mainly due to the presence of enriched oxygen vacancies which act as shallow donors. By loading FeOOH/NiOOH as the cocatalysts, the BiVO4 dual photoanodes exhibit a remarkable and highly stable photocurrent density of 5.87 mA cm(-2) at 1.23 V versus the reversible hydrogen electrode under AM 1.5 G illumination. An artificial leaf composed of the BiVO4/FeOOH/NiOOH dual photoanodes and a single sealed perovskite solar cell delivers a solar-to-hydrogen conversion efficiency as high as 6.5% for unbiased water splitting.
部门归属	[wang, songcan ; chen, peng ; bai, yang ; yun, jung-ho ; wang, lianzhou] univ queensland, nanomat ctr, sch chem engn, brisbane, qld 4072, australia ; [wang, songcan ; chen, peng ; bai, yang ; yun, jung-ho ; wang, lianzhou] univ queensland, australian inst bioengn & nanotechnol, brisbane, qld 4072, australia ; [liu, gang] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [liu, gang] univ sci & technol china, sch mat sci & engn, 72 wenhua rd, shenyang 110016, liaoning, peoples r china
关键词	Bismuth Vanadate Photoanodes Photoelectrochemical Performance Oxidation Catalyst Photocatalysis Absorption Hydrogen Progress Oxides Layer
学科领域	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
资助者	Australian Research Council through DP program; Australian Research Council through FF program; Australian Research Council through DECRA program; National Natural Science Foundation of China [51629201]; Australian Government Research Training Program; UQ Centennial Scholarship
收录类别	SCI
语种	英语
WOS记录号	WOS:000431961600024
引用统计	被引频次：777[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/321006/79304
专题	中国科学院金属研究所
通讯作者	Wang, LZ (reprint author), Univ Queensland, Nanomat Ctr, Sch Chem Engn, Brisbane, Qld 4072, Australia.; Wang, LZ (reprint author), Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia.; Liu, G (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Liu, G (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Wang, SC,Chen, P,Bai, Y,et al. New BiVO4 Dual Photoanodes with Enriched Oxygen Vacancies for Efficient Solar-Driven Water Splitting[J]. ADVANCED MATERIALS,2018,30(20):-.
APA	Wang, SC.,Chen, P.,Bai, Y.,Yun, JH.,Liu, G.,...&Liu, G .(2018).New BiVO4 Dual Photoanodes with Enriched Oxygen Vacancies for Efficient Solar-Driven Water Splitting.ADVANCED MATERIALS,30(20),-.
MLA	Wang, SC,et al."New BiVO4 Dual Photoanodes with Enriched Oxygen Vacancies for Efficient Solar-Driven Water Splitting".ADVANCED MATERIALS 30.20(2018):-.