Iron-doped ZnO as a support for Pt-based catalysts to improve activity and stability: Enhancement of metal-support interaction by the doping effect

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Title
Iron-doped ZnO as a support for Pt-based catalysts to improve activity and stability: Enhancement of metal-support interaction by the doping effect
Author(s)
Si Bui Trung Tran; Han Seul Choi; Sun Young Oh; Song Yi Moon; Jeong Young Park
Publication Date
2018
Journal
RSC Advances, v.8, no.38, pp.21528 - 21533
Publisher
ROYAL SOC CHEMISTRY
Abstract
In heterogeneous catalysis, the role of the interface between a metal and a metal oxide in deciding catalytic performance has remained a long-standing question. Out of many molecular-scale factors that affect the properties of metal-oxide interfaces, doping or impurities in the oxides can result in excess charge carriers or oxygen vacancies on the oxides, which lead to a change in catalytic activity. For a model system with a tunable dopant, we employed Pt nanoparticles with Fe doping. We synthesized a series of Fe-doped ZnO with different Fe loadings (i.e., 0, 1, and 4%) using the co-precipitation method, and then deposited Pt nanoparticles onto these supports. The Pt-based catalysts were employed to investigate the effect of the dopant to promote the catalytic performance for the CO oxidation reaction. The 4% Fe loading sample showed the highest catalytic activity among the catalysts, with a turnover frequency of 5.37 s-1 at 126 °C. The dopant was found to enhance the interaction between the Pt nanoparticles and the catalyst support, including the prevention of metal sintering, which resulted in an improvement of catalytic activity. © The Royal Society of Chemistry 2018
URI
https://pr.ibs.re.kr/handle/8788114/5578
ISSN
2046-2069
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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