Room Temperature CO Oxidation over Pt/MgFe2O4: A Stable Inverse Spinel Oxide Support for Preparing Highly Efficient Pt Catalyst

Bin Zheng; Shujie Wu; Xuwei Yang; Mingjun Jia; Wenxiang Zhang; Gang Liu

doi:10.1021/acsami.6b06501

Room Temperature CO Oxidation over Pt/MgFe₂O₄: A Stable Inverse Spinel Oxide Support for Preparing Highly Efficient Pt Catalyst

ACS Appl Mater Interfaces. 2016 Oct 12;8(40):26683-26689. doi: 10.1021/acsami.6b06501. Epub 2016 Sep 29.

Authors

Bin Zheng¹, Shujie Wu¹, Xuwei Yang¹, Mingjun Jia¹, Wenxiang Zhang¹, Gang Liu¹

Affiliation

¹ College of Chemistry, Key Laboratory of Surface and Interface Chemistry of Jilin Province, Jilin University , Changchun 130012, China.

PMID: 27657174
DOI: 10.1021/acsami.6b06501

Abstract

MgFe₂O₄ with inverse spinel structure is demonstrated to be an efficient support for constructing practical potential Pt catalyst (Pt/MgFe₂O₄). The resultant Pt/MgFe₂O₄ exhibits excellent catalytic behavior in CO oxidation under normal temperature and humidity. TOF calculated based on the content of Pt is 0.131 s^-1. The excellent performance of Pt/MgFe₂O₄ attributes to the presence of surface undercoordinated lattice oxygens on MgFe₂O₄ support. These oxygens could participate in the initial CO oxidation and then be recovered under O₂ conditions. Over this Pt/MgFe₂O₄ catalyst, CO catalytic oxidation should mainly follow a redox mechanism.

Keywords: CO oxidation; MgFe2O4; O2 activation; nanoparticle; supported Pt catalyst.