Issue 23, 2013
From the journal:

Journal of Materials Chemistry A

Pd catalyst supported on a chitosan-functionalized large-area 3D reduced graphene oxide for formic acid electrooxidation reaction

Yi Wang,ab   Huili Liu,ac   Li Wang,ad   Haibo Wang,b   Xuan Du,a   Fang Wang,a   Tao Qi,a   Jong-Min Leeb  and  Xin Wang*b  

* Corresponding authors

a National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

b School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
E-mail: WangXin@ntu.edu.sg
Fax: +65 6794 7553

c College of Chemistry and Chemical Engineering, China West Normal University, 1# Shida Road, Nanchong 637000, China

d College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China

Abstract

A large-area three-dimensional (3D) reduced graphene oxide (TRGO) material was obtained by facile heat treatment of a two-dimensional (2D) reduced graphene oxide (RGO) material. X-ray diffraction (XRD), scanning electron microscopy (SEM) and nitrogen adsorption results reveal that the new material is composed of small and fluffy graphene nanosheets, with many graphene arrays as well as 3D interconnected macropores and mesopores in some local positions, and possesses an ultrahigh specific surface area (>1000 m2 g−1) and large pore volume. The material was used to support a Pd catalyst for formic acid electrooxidation, demonstrating a much better electrocatalytic activity in terms of the onset potential and peak current density (seven times larger) than that of conventional carbon black, the most popular catalyst support. To tailor the electronic properties, the TRGO material was further functionalized with chitosan (CS). Compared to the Pd loaded on TRGO, Pd nanoparticles supported on the CS-functionalized TRGO show a better catalytic activity and good stability. This work provides a promising catalyst support material for direct formic acid fuel cells.

Graphical abstract: Pd catalyst supported on a chitosan-functionalized large-area 3D reduced graphene oxide for formic acid electrooxidation reaction

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Article information

DOI
https://doi.org/10.1039/C3TA10214A
Article type
Paper
Submitted
15 Jan 2013
Accepted
03 Apr 2013
First published
04 Apr 2013

J. Mater. Chem. A, 2013,1, 6839-6848

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Pd catalyst supported on a chitosan-functionalized large-area 3D reduced graphene oxide for formic acid electrooxidation reaction

Y. Wang, H. Liu, L. Wang, H. Wang, X. Du, F. Wang, T. Qi, J. Lee and X. Wang, J. Mater. Chem. A, 2013, 1, 6839 DOI: 10.1039/C3TA10214A

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