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Synergetic Effect of Conjugated Ni(OH)(2)/IrO2 Cocatalyst on Titanium-Doped Hematite Photoanode for Solar Water Splitting
Wang, Zhiliang1,2; Liu, Guiji1,2; Ding, Chunmei1,2; Chen, Zheng1,2; Zhang, Fuxiang1; Shi, Jingying1; Li, Can1
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2015-08-27
DOI10.1021/acs.jpcc.5b04892
119期:34页:19607-19612
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]PHOTOELECTROCHEMICAL HYDROGEN-PRODUCTION ; OXYGEN EVOLUTION ; SURFACE-STATES ; LIGHT-DRIVEN ; THIN-FILMS ; OXIDATION ; ENHANCEMENT ; ELECTRODES ; CATALYST ; LAYER
英文摘要Hematite is a promising photoanode material for renewable solar fuel production via photoelectrochemical (PEC) water splitting. However, the fast electron-hole recombination and sluggish surface reaction retard it from getting satisfied performance. Herein, hematite nanorod arrays doped with titanium (Ti-Fe2O3) on the surface were prepared by a solution-based process. Because of one-dimension anisotropy and improved charge transfer property, the photocurrent density is doubled compared to pure Fe2O3 at 1.50 V vs RHE under simulated sunlight (AM 1.5 G) irradiation. Loading conjugated Ni(OH)(2)/IrO, cocatalyst further leads to about 200 mV negative shift of the onset potential and dramatic increase of the applied bias photon-to-current efficiency (ABPE). We find that Ni(OH)(2) can efficiently capture the photogenerated holes from hematite as a hole-storage layer (HSL) to improve the charge transfer process across the interface of hematite and IrO2 electrocatalyst. Furthermore, the stored photogenerated holes in Ni(OH)(2) can be utilized by IrO2 for water oxidation more facilely. This synergetic effect along with the efficient surface doping are proposed to be responsible for the enhanced performance.
语种英语
WOS记录号WOS:000360415700005
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146495
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
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Wang, Zhiliang,Liu, Guiji,Ding, Chunmei,et al. Synergetic Effect of Conjugated Ni(OH)(2)/IrO2 Cocatalyst on Titanium-Doped Hematite Photoanode for Solar Water Splitting[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(34):19607-19612.
APA Wang, Zhiliang.,Liu, Guiji.,Ding, Chunmei.,Chen, Zheng.,Zhang, Fuxiang.,...&Li, Can.(2015).Synergetic Effect of Conjugated Ni(OH)(2)/IrO2 Cocatalyst on Titanium-Doped Hematite Photoanode for Solar Water Splitting.JOURNAL OF PHYSICAL CHEMISTRY C,119(34),19607-19612.
MLA Wang, Zhiliang,et al."Synergetic Effect of Conjugated Ni(OH)(2)/IrO2 Cocatalyst on Titanium-Doped Hematite Photoanode for Solar Water Splitting".JOURNAL OF PHYSICAL CHEMISTRY C 119.34(2015):19607-19612.
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