Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 176, Issue 18, Pages 1467-1473Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2011.09.004
Keywords
Platinum; Multi-wall carbon nanotubes; Sodium phthalate; Ethylene glycol aqueous solution; Methanol electrooxidation
Funding
- National Science Foundation of China [21171051, 20871042]
- Program for Changjiang Scholars and Innovation Research Team in University [IRT1061]
- Innovation Fond for Outstanding Scholar of Henan Provice [114200510004]
- Henan Key Proposed Program for basic and Frontier Research [11210221000, 112300410095]
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Due to the inherent inertness of multi-wall carbon nanotubes (MWCNTs), complicated procedures are involved in the preparation of MWCNT-supported catalysts. In this paper, a facile and effective method is introduced to prepare Pt nanoparticles dispersed on the surface of purified MWCNTs. In this method, sodium phthalate (SP) is used as a special additive to function as an effective cross linker between MWCNTs and Pt ions, and ethylene glycol (EG) aqueous solution is used as an effective solvent. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) analyses reveal that the prepared face-centered cubic Pt nanoparticles with the average diameter of 2.2 nm are well dispersed on the surface of the MWCNTs. Cyclic voltammetry and chronoamperometry tests demonstrate that the Pt/MWCNTs catalyst obtained from typical experiment exhibits better catalytic activity and stability for methanol electrooxidation than the Pt catalyst supported on conventional acid-treated MWCNTs (AO-MWCNTs) and JM commercial 20% Pt/C catalyst. (C) 2011 Elsevier B.V. All rights reserved.
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