Iron-doped ZnO as a support for Pt-based catalysts to improve activity and stability: enhancement of metal–support interaction by the doping effect. Issue 38 (12th June 2018)

• Record Type: Journal Article
• Authors: Trung Tran, Si Bui; Choi, Han Seul; Oh, Sun Young; Moon, Song Yi; Park, Jeong Young
• Is Part Of: RSC advances. Volume 8:Issue 38(2018)
• Page Start: 21528
• Page End: 21533
• Publication Date: 2018-06-12
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra03664k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We deposited Pt nanoparticles on a series of Fe-doped ZnO with different Fe loadings to study the effect of dopant on the catalytic performance for the CO oxidation reaction. 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.