Facile synthesis of carbon supported Pt-nanoparticles with Fe-rich surface: A highly active catalyst for preferential CO oxidation

被引：34

作者：

Zhang, Hua ^{[1
]}

Lin, Dongrong ^{[1
]}

Xu, Guiting ^{[1
]}

Zheng, Jinbao ^{[1
]}

Zhang, Nuowei ^{[1
]}

Li, Yunhua ^{[1
]}

Chen, Bing H. ^{[1
]}

机构：

[1] Xiamen Univ, Natl Engn Lab Green Chem Product Alcohols Ethers, Dept Chem & Biochem Engn, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 04期

关键词：

Fe decorated Pt/C; Surfactant-free polyol process; Preferential oxidation of CO; BIMETALLIC CATALYSTS; MONOXIDE; HYDROGEN; NANOTUBES; OXIDES;

D O I：

10.1016/j.ijhydene.2014.12.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Rational design and controlled preparation of highly effective catalysts towards the preferential oxidation of CO have significant importance for the utilization of hydrogen energy. In this work, PtFe/C bimetallic catalysts have been successfully prepared by a one-pot surfactant-free polyol process, where Pt metal nanoparticles serve as catalysts to reduce Fe ions to metallic form on the surface. The resulting PtFe/C catalysts are investigated for a PROX CO reaction and characterized by ICP-AES, XPS, XRD, TEM, HS-LEIS. It is found that PtFe/C with an optimal Fe loading shows extremely high activity and stability. These characterization results reveal that PtFe/C adopts a structure of Fe rich surface and Pt dominated cores. The excellent catalytic performances over PtFe/C catalysts are attributed to the efficient activation of O-2 by Fe species located on the catalyst surface, indicated by the results of CO and O-2 pulse experiments. Additionally, other PtM/C (M = Cu, Ni) catalysts possessing the similar structure with that of PtFe/C can also be synthesized using the established one-pot surfactant-free polyol process. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：1742 / 1751

页数：10

共 35 条

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