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jasonxmc

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[资源] 【资源】静电自组装方法制备Pt/CNT催化剂 (Journal of materials chemisrty ASAP)

Journal of materials chemisrty 上ASAP的paper

Title: Carbon nanotubes decorated with Pt nanoparticles via electrostatic self-assembly

Author: Sheng Zhang, Yuyan Shao, Geping Yin and Yuehe Lin

Abstract:Carbon nanotubes (CNTs) are noncovalently functionalized with poly(allylamine hydrochloride) (PAH) and then employed as the support of Pt nanoparticles. X-Ray photoelectron spectroscopy confirms the successful functionalization of CNTs with PAH. The negatively charged Pt precursors are adsorbed on positively charged PAH-wrapping CNTs surface via electrostatic self-assembly and then in situ reduced in ethylene glycol. X-Ray diffraction and transmission electron microscope images reveal that Pt nanoparticles with an average size of 2.6 nm are uniformly dispersed on CNT surface. Pt/PAH-CNTs exhibit unexpectedly high activity towards oxygen reduction reaction, which can be attributed to the large electrochemical surface area of Pt nanoparticles. It also shows enhanced electrochemical stability due to the structural integrity of PAH-CNTs. This provides a facile approach to synthesize CNTs-based nanoelectrocatalysts.

Link: www.rsc.org/publishing/journals/JM/article.asp?doi=b919494k

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[ Last edited by jasonxmc on 2010-2-28 at 09:49 ]

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