期刊
CHINESE JOURNAL OF CHEMISTRY
卷 26, 期 4, 页码 666-670出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.200890126
关键词
multi-walled carbon nanotube; palladium nanoparticle; catalyst support; electrochemical property
Palladium nanoparticles were crystallized on 4-aminobenzoic acid monolayer-grafted multi-walled carbon nanotubes (MWNT) by diazotization. The structure and nature of the resulting Pd/MWNT composite were characterized by transmission electron microscopy and X-ray diffraction, the results show that the chemically synthesized Pd nanoparticles were homogeneously dispersed and well-separated from one another on the modified MWNT surfaces. Cyclic voltammogram showed that the Pd-MWNT composite materials performed higher electrocatalytic activity and better long-term stability toward methanol oxidation in alkaline solution than Pd-C. The results imply that the Pd-MWNT composite materials as a promising support material improve the excellent electrocatalytic activity for methanol oxidation greatly. So the Pd/MWNT composites have a good application potential to fuel cells.
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