Achieving surface-sealing of hematite nanoarray photoanode with controllable metal–organic frameworks shell for enhanced photoelectrochemical water oxidation

doi:10.1016/j.jcat.2022.06.043

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	Achieving surface-sealing of hematite nanoarray photoanode with controllable metal–organic frameworks shell for enhanced photoelectrochemical water oxidation
	Wang, Peng 3; Wang, Shuyan 3; Gao, Lili 3; Long, Xuefeng 1; Chai, Huan 3; Li, Feng 2; Wang, Qiang 3; Jin, Jun 3
刊名	Journal of Catalysis
	2022-09-01
卷号	413 页码:398-406
关键词	Binary alloys Carrier lifetime Charge transfer Crystalline materials Crystallinity Electrocatalysis Etching Metals Organometallics Oxidation Photocatalytic activity Photoelectrochemical cells Shells (structures) Core shell structure Haematite Layered-double hydroxides Metalorganic frameworks (MOFs) Nanoarrays Photo-anodes Photoelectrochemical water oxidation Photoelectrochemicals Surface engineering Surface sealing
ISSN号	0021-9517
DOI	10.1016/j.jcat.2022.06.043
英文摘要	Surface engineering of hematite (α-Fe2O3) photoanode by coupling electrocatalytically active metal–organic frameworks (MOFs) is an efficient way of boosting surface charge transfer for photoelectrochemical (PEC) water oxidation. However, the precise and controllable coating of conformal MOFs overlayer through a facile approach on photoelectrode still faces a challenge. In this work, NiFe metal–organic frameworks (NiFe-MOFs) are conformally deposited on zirconium-doped hematite (Zr-Fe2O3) by a novel indirect ligand-assisted transformation method, in which the well-coupled NiFe-layered double hydroxides (NiFe-LDHs) on photoanode act as self-templates due to their special layered structure and suitable interlayer spacing to provide with large specific area for the in-situ etching and coordinating, thus achieving the in-situ transformation of NiFe-LDHs layer into conformal NiFe-MOFs shell. Then, detailed investigations reveal that this conformal NiFe-MOFs shell endows the photoanode with a larger electrochemical active area, higher stability, and longer charge carrier lifetime compared to that of crystalline NiFe-MOFs on Zr-Fe2O3 from traditional solvothermal, resulting in outstanding PEC water oxidation performance of the target core–shell Zr-Fe2O3@NiFe-MOFs photoanode. © 2022 Elsevier Inc.
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	Academic Press Inc.
WOS记录号	WOS:000829348000008
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159416]
专题	石油化工学院
作者单位	1.Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan; 750021, China 3.State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou; 730000, China;
推荐引用方式 GB/T 7714	Wang, Peng,Wang, Shuyan,Gao, Lili,et al. Achieving surface-sealing of hematite nanoarray photoanode with controllable metal–organic frameworks shell for enhanced photoelectrochemical water oxidation[J]. Journal of Catalysis,2022,413:398-406.
APA	Wang, Peng.,Wang, Shuyan.,Gao, Lili.,Long, Xuefeng.,Chai, Huan.,...&Jin, Jun.(2022).Achieving surface-sealing of hematite nanoarray photoanode with controllable metal–organic frameworks shell for enhanced photoelectrochemical water oxidation.Journal of Catalysis,413,398-406.
MLA	Wang, Peng,et al."Achieving surface-sealing of hematite nanoarray photoanode with controllable metal–organic frameworks shell for enhanced photoelectrochemical water oxidation".Journal of Catalysis 413(2022):398-406.