Enhanced visible photocatalytic activity of hybrid Pt/α-Fe2O3 nanorods

被引：38
|
作者：
Chen, Long [1 ]
Li, Feng [1 ]
Ni, Binbin [1 ]
Xu, Jiao [1 ]
Fu, Zhengping [1 ]
Lu, Yalin [1 ,2 ,3 ]
机构：
[1] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China
[2] Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
[3] USAF Acad, Laser Opt Res Ctr, Colorado Springs, CO 80840 USA
来源：
RSC ADVANCES | 2012年 / 2卷 / 26期
关键词：
HYDROGEN EVOLUTION; FERMI-LEVEL; AU; OXIDATION; HEMATITE; NANOSTRUCTURES; NANOPARTICLES; CATALYSTS; SIZE; NANOCRYSTALS;
D O I：
10.1039/c2ra21897f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
alpha-Fe2O3 nanorods with highly defective surfaces were used as a support to further synthesize hybrid Pt/alpha-Fe2O3 nanorods. Transmission electron microscopy analyses suggest that Pt nanoparticles are selectively deposited on the surface defects such as edge-steps. Pt nanoparticles in metallic and electron deficient states, as well as the correlation between chemisorbed oxygen species and the peripheral Pt area, were revealed by the X-ray photoelectron spectroscopy spectra. The hybrid nanorods with an optimized amount of Pt nanoparticles and a large peripheral Pt area exhibit far better visible light photocatalytic activity for degrading methylene blue than alpha-Fe2O3.
引用
收藏
页码：10057 / 10063
页数：7
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