α-Fe2O3 nanoarrays photoanodes decorated with Ni-MOFs for enhancing photoelectrochemical water oxidation

doi:10.1016/j.ijhydene.2020.07.277

	α-Fe2O3 nanoarrays photoanodes decorated with Ni-MOFs for enhancing photoelectrochemical water oxidation
	Liu, Xiangyan 1; Zhan, Faqi4 ; Li, Dongwei 3; Xue, Mingyue 2
	2020-10-30
发表期刊	International Journal of Hydrogen Energy
ISSN	03603199
卷号	45 期号:53 页码:28836-28846
摘要	Owing to severe recombination of photogenerated charges, sluggish kinetics of oxygen evolution reaction (OER) and high overpotential, the efficiency of photoelectrocatalytic (PEC) water splitting is severely restricted currently. Herein, a metal-organic framework (Ni-MOF) as cocatalyst has been introduced onto Fe2O3 nanoarrays for PEC water oxidation. The new Ni-MOFs/Fe2O3 photoanode obviously improves the PEC water oxidation performance with respect to the Fe2O3. Specifically, a high photocurrent density is achieved on the Ni-MOF/Fe2O3 film, which corresponds to two-fold over the pristine Fe2O3 film at 1.23 V vs. RHE. Moreover, the photoanode also exhibits a significant cathodic shift of the onset potential (~240 mV) relative to the bare Fe2O3. The enhanced PEC performance is attributed to effective utilization the surface-reaching holes and reduction of the surface charge recombination, which are confirmed by electrochemical impedance spectroscopy and the derived Bode analysis. This study brings new insight into the development of MOF-based materials in the field of PEC water splitting. © 2020 Hydrogen Energy Publications LLC
关键词	Bode diagrams Electrochemical impedance spectroscopy Hematite Metal-Organic Frameworks Organometallics Oxidation Oxygen evolution reaction Photoelectrochemical cells Reaction kinetics Charge recombinations Onset potential Oxygen evolution reaction (oer) Photocurrent density Photoelectrocatalytic Photoelectrochemical water oxidation Photogenerated charge Sluggish kinetics
DOI	10.1016/j.ijhydene.2020.07.277
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000579568300052
出版者	Elsevier Ltd
EI入藏号	20203409093830
EI主题词	Nickel compounds
EI分类号	482.2 Minerals - 702.1 Electric Batteries - 731.1 Control Systems - 801 Chemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds
来源库	Compendex
分类代码	482.2 Minerals - 702.1 Electric Batteries - 731.1 Control Systems - 801 Chemistry - 802.2 Chemical Reactions - 804.1 Organic Compounds
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115533
专题	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Liu, Xiangyan; Xue, Mingyue
作者单位	1.Cent South Univ, Xiangya Hosp, Clin Res Ctr Breast Canc Control & Prevent Hunan, Dept Gen Surg, Changsha 410008, Peoples R China; 2.Guilin Univ Elect Technol, Sch Life & Environm Sci, Guilin 541004, Peoples R China; 3.Chongqing Univ Educ, Div Sci Res Management, Chongqing 400065, Peoples R China; 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiangyan,Zhan, Faqi,Li, Dongwei,et al. α-Fe2O3 nanoarrays photoanodes decorated with Ni-MOFs for enhancing photoelectrochemical water oxidation[J]. International Journal of Hydrogen Energy,2020,45(53):28836-28846.
APA	Liu, Xiangyan,Zhan, Faqi,Li, Dongwei,&Xue, Mingyue.(2020).α-Fe2O3 nanoarrays photoanodes decorated with Ni-MOFs for enhancing photoelectrochemical water oxidation.International Journal of Hydrogen Energy,45(53),28836-28846.
MLA	Liu, Xiangyan,et al."α-Fe2O3 nanoarrays photoanodes decorated with Ni-MOFs for enhancing photoelectrochemical water oxidation".International Journal of Hydrogen Energy 45.53(2020):28836-28846.