Issue 29, 2012
From the journal:

Journal of Materials Chemistry

Low-temperature plasma-assisted preparation of graphene supported palladium nanoparticles with high hydrodesulfurization activity†

Wenya Xu,a   Xuzhen Wang,*ab   Quan Zhou,b   Bo Meng,b   Jiantao Zhao,c   Jieshan Qiub  and  Yury Gogotsibd  

* Corresponding authors

a School of Chemistry, Faculty of Chemical, Environmental & Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning, China
E-mail: xzwang@dlut.edu.cn
Fax: +86-411-84986073
Tel: +86-411-84986073

b Carbon Research Laboratory, State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Energy Materials & Chemical Engineering, Faculty of Chemical, Environmental & Biological Science and Technology, Dalian University of Technology, Dalian, China

c State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, China

d Department of Materials Science and Engineering, A. J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, Pennsylvania 19104, USA

Abstract

In this work, a novel strategy to obtain the graphene-supported palladium catalyst for the hydrodesulfurization of carbonyl sulfide (COS) in coal gas is presented. By employing the low temperature dielectric barrier discharge (DBD) plasma, well-dispersed Pd nanoparticles with particle size of about 2 nm supported on graphene sheets (PL-Pd/GS) have been synthesized through a facile one-step route, in which the graphite oxides and PdCl2 were simultaneously reduced in hydrogen plasma. The as-prepared PL-Pd/GS catalyst shows higher catalytic efficiency in the COS hydrogenation, compared to a traditional Pd/C catalyst, as well as Pd/GS reduced by hydrogen at high temperature or by ethylene glycol reduction in liquid phase. Characterizations using XRD, FT-IR, Raman, and HRTEM techniques reveal that the improved performance of PL-Pd/GS for COS conversion is attributed to small size and uniform dispersion of Pd nanoparticles on graphene sheets resulting from the efficient low temperature treatment in DBD plasma. This finding inspires the in situ preparation of various metal–graphene sheets catalysts by taking advantage of plasma, and paves a new avenue to make use of graphene sheets as a support material to improve catalytic activity.

Graphical abstract: Low-temperature plasma-assisted preparation of graphene supported palladium nanoparticles with high hydrodesulfurization activity

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Article information

DOI
https://doi.org/10.1039/C2JM16479E
Article type
Paper
Submitted
09 Dec 2011
Accepted
12 Apr 2012
First published
16 May 2012

J. Mater. Chem., 2012,22, 14363-14368

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Low-temperature plasma-assisted preparation of graphene supported palladium nanoparticles with high hydrodesulfurization activity

W. Xu, X. Wang, Q. Zhou, B. Meng, J. Zhao, J. Qiu and Y. Gogotsi, J. Mater. Chem., 2012, 22, 14363 DOI: 10.1039/C2JM16479E

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