Controlled one-step synthesis of Pt decorated octahedral Fe3O4 and its excellent catalytic performance for CO oxidation

Gengnan Li; Liang Li; Binghan Wu; Jinxia Li; Yuan Yuan; Jianlin Shi

doi:10.1039/C5NR05933J

Controlled one-step synthesis of Pt decorated octahedral Fe₃O₄ and its excellent catalytic performance for CO oxidation†

Gengnan Li,^a Liang Li,*^a Binghan Wu,^a Jinxia Li,^b Yuan Yuan^a and Jianlin Shi*^ac

* Corresponding authors

^a Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
E-mail: liliang@ecust.edu.cn
Fax: +86-21-64250740
Tel: +86-21-64252599

^b Research Center of Analysis and Test, East China University of Science and Technology, Shanghai, China

^c State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China
E-mail: jlshi@mail.sic.ac.cn

Abstract

A facile one-step co-precipitation method has been applied for the synthesis of a Pt decorated octahedral Fe₃O₄ catalyst. The simple addition of a Pt⁴⁺ and Fe²⁺ mixture into a KOH solution leads to the simultaneous formation of an octahedral Fe₃O₄ and in situ reduction of Pt⁴⁺. HAADF-STEM analysis demonstrates the good dispersion of the Pt species on the Fe₃O₄ (111) plane, and the resulting material exhibits excellent catalytic activity for CO oxidation under moisture conditions. The inevitably existing moisture contributes to the formation of reaction intermediate [COOH] and hence promotes the catalytic activity, which has been proved through in situ DRIFTS analysis.

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DOI: https://doi.org/10.1039/C5NR05933J
Article type: Paper
Submitted: 31 Aug 2015
Accepted: 25 Sep 2015
First published: 28 Sep 2015

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Nanoscale, 2015,7, 17855-17860

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Controlled one-step synthesis of Pt decorated octahedral Fe₃O₄ and its excellent catalytic performance for CO oxidation

G. Li, L. Li, B. Wu, J. Li, Y. Yuan and J. Shi, Nanoscale, 2015, 7, 17855 DOI: 10.1039/C5NR05933J

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Controlled one-step synthesis of Pt decorated octahedral Fe₃O₄ and its excellent catalytic performance for CO oxidation†

Abstract

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Controlled one-step synthesis of Pt decorated octahedral Fe₃O₄ and its excellent catalytic performance for CO oxidation

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