Fluorine Passivated Perovskite SrNbO<sub>2</sub>N Photocatalyst for Robust Sunlight-Driven Water Splitting

doi:10.1002/aenm.202404811

IMR OpenIR

	Fluorine Passivated Perovskite SrNbO₂N Photocatalyst for Robust Sunlight-Driven Water Splitting
	Yu, Jinxing 1,2; Huang, Jie 3; Wang, Ran 1,2; Konysheva, Elena Yu 4; Liu, Gang 3; Xu, Xiaoxiang 1,2
通讯作者	Liu, Gang(gangliu@imr.ac.cn) ; Xu, Xiaoxiang(xxxu@tongji.edu.cn)
	2024-12-05
发表期刊	ADVANCED ENERGY MATERIALS
ISSN	1614-6832
页码	12
摘要	SrNbO2N is a promising narrow-bandgap semiconductor for sunlight-driven water splitting but is generally subject to insufficient photocarrier separation and severe photocorrosion. Here, the targeted single-crystalline SrNbO2N nanobelts are passivated by consecutive annealing in O-2 and N-2/NH4F to approach the right N/O ratio (1/2) and anion content (O + N = 60 at%). The passivation measures lead to both a low concentration (approximate to 2.2 x 10(15) cm(-3)) of defects including V-O, Nb3+, Nb4+ for efficient photocarrier separation and unique fluorine-rich, nitrogen-poor surface with low surface energy for high stability against photocorrosion. Notably, the passivated SrNbO2N nanobelts deliver the highest values of photocurrent density of 4.5 mA cm(-2) at 1.23 V versus RHE and stable photocatalytic (PC) Z-scheme overall water splitting activity of approximate to 10 mu mol h(-1) H-2 evolution under AM 1.5G illumination when used as photoanode materials for photoelectrochemical (PEC) water oxidation and the photocatalytic O-2-evolution moiety, respectively. These findings provide not only an effective guideline to upgrade the activity and stability of SrNbO2N but also fresh mechanistic insights into the role of passivation measures.
关键词	passivation photocatalyst photoelectrochemistry SrNbO2N water splitting
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; New Cornerstone Science Foundation through the XPLORER PRIZE
DOI	10.1002/aenm.202404811
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China[2021YFA1500800] ; New Cornerstone Science Foundation through the XPLORER PRIZE ; [52172225] ; [52332009] ; [51825204]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001371172900001
出版者	WILEY-V C H VERLAG GMBH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181319
专题	中国科学院金属研究所
通讯作者	Liu, Gang; Xu, Xiaoxiang
作者单位	1.Tongji Univ, Putuo Peoples Hosp, Clin & Cent Lab, Shanghai 200060, Peoples R China 2.Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, Shanghai 200092, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 4.Russian Acad Sci, Ural Branch, Inst Met, Ekaterinburg 620016, Russia
推荐引用方式 GB/T 7714	Yu, Jinxing,Huang, Jie,Wang, Ran,et al. Fluorine Passivated Perovskite SrNbO₂N Photocatalyst for Robust Sunlight-Driven Water Splitting[J]. ADVANCED ENERGY MATERIALS,2024:12.
APA	Yu, Jinxing,Huang, Jie,Wang, Ran,Konysheva, Elena Yu,Liu, Gang,&Xu, Xiaoxiang.(2024).Fluorine Passivated Perovskite SrNbO₂N Photocatalyst for Robust Sunlight-Driven Water Splitting.ADVANCED ENERGY MATERIALS,12.
MLA	Yu, Jinxing,et al."Fluorine Passivated Perovskite SrNbO₂N Photocatalyst for Robust Sunlight-Driven Water Splitting".ADVANCED ENERGY MATERIALS (2024):12.