Mn-doping and NiFe layered double hydroxide coating: Effective approaches to enhancing the performance of alpha-Fe2O3 in photoelectrochemical water oxidation | |
Department | OSSO国家重点实验室 |
Huang, Jingwei1; Hu, Guowen1; Ding Y(丁勇)1,2; Pang, Mingchun1; Ma, Baochun1; Ding Y(丁勇) | |
2016 | |
Source Publication | Journal of Catalysis |
ISSN | 0021-9517 |
Volume | 340Pages:261-269 |
Abstract | The efficiency of an electrode in photoelectrochemical (PEC) water splitting is determined by the light absorption efficiency, charge separation efficiency, and charge injection efficiency (η = ηabsorption × ηseparation × ηinjection). Here, doping with Mn element and coating with NiFe layered double hydroxide (NiFe-LDH) have been applied to enhance the charge separation efficiency and charge injection efficiency of α-Fe2O3 as a water oxidation catalyst in the PEC water splitting process. The Mn doping improves the charge separation efficiency from 20% to 35% at high potential. The coating amount of NiFe-LDH, which can be controlled by hydrothermal conditions, has a significant effect on the performance of α-Fe2O3. At low precursor concentrations, the formed thin NiFe-LDH has little effect on the light absorption of α-Fe2O3, while NiFe-LDH fabricated at high precursor concentrations forms a thick layer that affects the light absorption of α-Fe2O3. The thin NiFe-LDH layer shifts the onset potential negatively and enhances the charge injection efficiency to 90% at high potential. |
Keyword | Photoelectrochemical Water Oxidation Hematite Nife-ldh Charge Separation Efficiency Charge Injection Efficiency |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/j.jcat.2016.05.007 |
Funding Organization | the National Natural Science Foundation of China (Grants Nos. 21173105;21572084);Fundamental Research Funds for the Central Universities (lzujbky-2016-k08;lzujbky-2016-210);the Natural Science Foundation of Gansu (1506RJZA224) |
Indexed By | SCI |
If | 6.844 |
Language | 英语 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20679 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Ding Y(丁勇) |
Affiliation | 1.State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and College of Chemistry and Chemical Engineering Lanzhou University, Lanzhou 730000, China 2.State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
Recommended Citation GB/T 7714 | Huang, Jingwei,Hu, Guowen,Ding Y,et al. Mn-doping and NiFe layered double hydroxide coating: Effective approaches to enhancing the performance of alpha-Fe2O3 in photoelectrochemical water oxidation[J]. Journal of Catalysis,2016,340:261-269. |
APA | Huang, Jingwei,Hu, Guowen,Ding Y,Pang, Mingchun,Ma, Baochun,&丁勇.(2016).Mn-doping and NiFe layered double hydroxide coating: Effective approaches to enhancing the performance of alpha-Fe2O3 in photoelectrochemical water oxidation.Journal of Catalysis,340,261-269. |
MLA | Huang, Jingwei,et al."Mn-doping and NiFe layered double hydroxide coating: Effective approaches to enhancing the performance of alpha-Fe2O3 in photoelectrochemical water oxidation".Journal of Catalysis 340(2016):261-269. |
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