Carboxylic graphene-supported platinum and platinum-palladium nanoparticles with high electrocatalytic activity for methanol oxidation

摘要：

　　Pt, Pd and Pt-Pd nanoparticles (NPs) were synthesized on carboxylic graphene (CGR) sheets.The nanocomposites were characterized by scanning electron microscopy (SEM), Fourier transform infi ared spectra (FTIR) and UV-vis absorption spectroscopy.Their electrocatalytic activity for methanol oxidation was also investigated.The results showed the peak current density of methanol oxidation of Pt NPs-Graphite oxide (GO), Pd NPs-CGR, Pt NPs-CGR and Pt-Pd NPs-CGR is 12.2μA/cm2, 14.1μA/cm2, 15.1μA/cm2 and 21.5μA/cm2 respectively.The nanocomposite of CGR as catalyst supports and Pt-Pd NPs as catalyzers is promising for direct methanol fuel cells.

关键词： Carboxylic graphene Platinum-palladium nanoparticles Electrocatalytic activity Methanol oxidation Fuel cells

作者: Qing Zhou Guang-can Wang Long Yang Yun Yang Yang Xu

作者单位: School of Physical Science and Technology,Yunnan University,Kunming 650091,China School of Chemical Science and Engineering,Yunnan University,Kunming 650091,China Division of Electron Microscopy,Kunming Medical University,Kunming 650500,China

会议类型: 国际会议

会议名称: 2012 China Functional Materials Technology and Industry Forum(2012中国功能材料科技与产业高层论坛)(CFMTIF2012)

会议地点: 昆明

会议语种:英文

页码: 670-674

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）