Electrodeposition of Pt nanoparticles on undoped nanodiamond powder for methanol oxidation electrocatalysts |
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| Authors: | L.Y. Bian Y.H. WangJ.B. Zang J.K. YuH. Huang |
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| Affiliation: | State Key Laboratory of Metastable Material Science and Technology, College of Material Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China |
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| Abstract: | Undoped nanodiamond (ND) powder with average particle sizes of 5 and 100 nm were modified with platinum (Pt) nanoparticles by electrodeposition from 1.1 mM chloroplatinic acid solution. The structure and morphology of the composites were characterized by field emission-scanning electron microscopy and X-ray diffraction. The results showed that Pt nanoparticles were well-dispersed on the facet surfaces of ND particles. The electrooxidation of methanol on Pt-modified ND powders was investigated by cyclic voltammetry, which indicated its good electrocatalytic activity. Compared with 100 nm ND powder, the 5 nm ND powder modified with Pt nanoparticles exhibited better electrocatalytic activity. |
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| Keywords: | Undoped nanodiamond powder Platinum Nanoparticle Electrocatalytic Methanol |
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