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Chitosan‐Functionalized Carbon Nanotubes as Support for the High Dispersion of PtRu Nanoparticles and their Electrocatalytic Oxidation of Methanol
Author(s) -
Wu Bohua,
Zhang Yunsong,
Kuang Yinjie,
Yu Yaming,
Zhang Xiaohua,
Chen Jinhua
Publication year - 2012
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201100564
Subject(s) - carbon nanotube , surface modification , nanoparticle , cyclic voltammetry , materials science , chemical engineering , chitosan , electrochemistry , methanol , electrocatalyst , covalent bond , dispersion (optics) , nanotechnology , chemistry , organic chemistry , electrode , physics , optics , engineering
Carbon nanotubes (CNTs) were non‐covalently functionalized with chitosan (Chit) and then employed as the support for PtRu nanoparticles. The functionalization was carried out at room temperature without the use of corrosive acids, thereby preserving the integrity and the electronic conductivity of the CNTs. Transmission electron microscopy reveals that PtRu nanoparticles were highly dispersed on the surface of Chit‐functionalized CNTs (CNT‐Chit) with small particle‐size. Cyclic voltammetry studies indicated that the PtRu nanoparticle/CNT‐Chit nanohybrids have a higher electrochemical surface area, electrocatalytic performance, and stability towards methanol oxidation compared to PtRu nanoparticles supported on the pristine CNTs.