Hematite;
Metal doping;
Water splitting;
Oxygen evolution reaction;
PHOTO-FENTON REACTION;
WATER OXIDATION;
PHOTOELECTROCHEMICAL PROPERTIES;
SEMICONDUCTOR ELECTRODES;
EFFECTIVE DOPANTS;
ALPHA-FE2O3;
HEMATITE;
PERFORMANCE;
FILMS;
TRANSPARENT;
D O I:
10.1016/j.pnsc.2018.07.005
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Hematite (alpha-Fe2O3) has been extensively studied as a promising photocatalyst, with the capacity to split water under visible light. To tune its electronic structure and improve the performance for oxygen evolution reaction (OER), high-quality single crystals of alpha-Fe2O3 nanoparticles were synthesized and doped by various transition metals (M = V, Cr, Mn, Zn, Co, Ni, Cu, Nb, Mo, Ti) by a molten-salt flux method. Optical, electronic and catalytic properties of transition-metal-doped alpha-Fe2O3 (TM-doped alpha-Fe2O3) have been systematically investigated. Cobalt has been identified as the best dopant for alpha-Fe2O3, reducing the OER overpotential by 0.16 V with respect to the undoped.
机构:
Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R ChinaZhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China
Li, Zhihan
Yi, Wenjing
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机构:
Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Peoples R ChinaZhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China
Yi, Wenjing
Pang, Qingqing
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机构:
Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Peoples R ChinaZhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China
Pang, Qingqing
Zhang, Meng
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机构:
Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R ChinaZhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China
Zhang, Meng
Liu, Zhongyi
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机构:
Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China
Zhengzhou Univ, State Key Lab Coking Coal Resources Green Exploita, Zhengzhou 450001, Peoples R ChinaZhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China