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Carbon nanotube-supported Pt-HxMoO3 as electrocatalyst for methanol oxidation by Z.H. Zhou; W.S. Li; Z. Fu; X.D. Xiang is a Engineering article available to read on EtoBox.

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Carbon nanotube (CNT)-supported platinum modified with H x MoO 3 (Pt-H x MoO 3 /CNT) was prepared and used as an electrocatalyst for methanol oxidation. In the preparation of this electrocatalyst, a platinum precursor was loaded on CNTs and reduced by sodium borohydride in ethylene glycol, resulting in CNT-supported platinum without modification (Pt/ CNT), and then the Pt/CNT was modified with H x MoO 3 that was formed by hydrolysis and subsequent reduction of ammonium molybdate. The surface morphology, structure and composition of Pt-H x MoO 3 /CNT and Pt/CNT as well as their activity toward methanol oxidation were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD), energy-dispersive spectrometry (EDS), Fourier transform infrared spectroscopy (FTIR), cyclic voltammetry (CV), chronoamperometry (CA), chronopentiometry (CP), and electrochemical impedance spectroscopy (EIS). The results, obtained from TEM, XRD, EDS, and FTIR, indicate that the platinum loaded on CNTs has a face-centered cubic structure with particle sizes of 2-5 nm, and the modification of H x MoO 3 on platinum with an atom ratio of Pt:Mo 1⁄4 2:1 has little effect on the particle size, dis

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Author

Z.H. Zhou; W.S. Li; Z. Fu; X.D. Xiang

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0360-3199)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)