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

Long Chen; Feng Li; Binbin Ni; Jiao Xu; Zhengping Fu; Yalin Lu

doi:10.1039/C2RA21897F

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

Long Chen,^a Feng Li,^a Binbin Ni,^a Jiao Xu,^a Zhengping Fu*^a and Yalin Lu*^abc

Author affiliations

* Corresponding authors

^a CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
E-mail: fuzp@ustc.edu.cn
Tel: 86 0551 3607330

^b National Laboratory for Physical Sciences at the Microscale, Hefei, 230026, P. R. China
E-mail: yllu@ustc.edu.cn
Tel: 86 0551 3603004

^c Laser Optics Research Center, US Air Force Academy, CO, 80840, USA

Abstract

α-Fe₂O₃ nanorods with highly defective surfaces were used as a support to further synthesize hybrid Pt/α-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 α-Fe₂O₃.

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Article information

DOI: https://doi.org/10.1039/C2RA21897F
Article type: Paper
Submitted: 22 Aug 2012
Accepted: 24 Aug 2012
First published: 24 Aug 2012

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RSC Adv., 2012,2, 10057-10063

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

L. Chen, F. Li, B. Ni, J. Xu, Z. Fu and Y. Lu, RSC Adv., 2012, 2, 10057 DOI: 10.1039/C2RA21897F

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