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Issue 25, 2012
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Preparation and characterization of Fe-doped TiO2nanoparticles as a support for a high performance CO oxidation catalyst†

Sungju Yu,‡a   Hyeong Jin Yun,‡a   David Minzae Leea  and  Jongheop Yi*a  
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* Corresponding authors

a World Class University (WCU) program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 151-742, Republic of Korea
E-mail: jyi@snu.ac.kr
Fax: +82-2-885-6670
Tel: +82-2-880-7438

Abstract

A simple method is described for the preparation of Fe-doped TiO2 nanoparticles (Ti1−xFexO2) that can be used as a high performance support material for a CO oxidation catalyst. The method allows one to fabricate Ti1−xFexO2 with uniform sizes and shapes. Microstructural studies using XRD, Raman spectroscopy and EPR analyses indicate that the Fe dopant is substitutionally incorporated by replacing Ti4+ cations. Electrochemical results indicate that, when a small amount of Fe molecules (less than 8 atomic%) are incorporated into a TiO2 structure, the support material has greatly improved redox characteristics. This suggests that an Fe-doped TiO2 support enhances both the release and uptake of oxygen atoms from the catalysts, thus resulting in a high catalytic activity in CO oxidation reactions. The results confirmed that a Au catalyst supported on Fe-doped TiO2 containing a 6 atom% Fe dopant showed an outstanding oxidation performance. The findings reported herein represent an innovative route to designing high performance catalysts for oxidation reactions.

Graphical abstract: Preparation and characterization of Fe-doped TiO2 nanoparticles as a support for a high performance CO oxidation catalyst

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Article information

https://doi.org/10.1039/C2JM30360D
Submitted
18 Jan 2012
Accepted
17 Apr 2012
First published
19 Apr 2012
J. Mater. Chem., 2012,22, 12629-12635
Article type
Paper
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Preparation and characterization of Fe-doped TiO2 nanoparticles as a support for a high performance CO oxidation catalyst

S. Yu, H. J. Yun, D. M. Lee and J. Yi, J. Mater. Chem., 2012, 22, 12629
DOI: 10.1039/C2JM30360D

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