Amphiphilic block copolymer-stabilized PtRu nanoparticles highly dispersed on multi-walled carbon nanotube for methanol oxidation

作者：Guo, Dao-Jun; Cai, Peng; You, Jin-Mao^*

来源：Journal of Colloid and Interface Science, 2012, 368: 443-446.

DOI：10.1016/j.jcis.2011.10.066

• Electrocatalyst
• Fuel cells
• Methanol oxidation
• Nanoparticles

We report a one-pot synthesis of amphiphilic block copolymer-stabilized PtRu nanoparticle modified multi-walled carbon nanotubes (MWCNTs) using RuCl3 center dot xH(2)O and H2PtCl6 center dot 6H(2)O as ruthenium and platinum sources, and block copolymer poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) as stabilizer agent. PtRu alloyed nanoparticles with an average diameter of 4.6 nm are well decorated homogeneously on the exterior surfaces of the MWCNTs. The electrochemical catalytic activity for methanol oxidation of PtRu/MWCNTs and commercial PtRu/C (E-TEK) is comparatively investigated using cyclic voltammetry and chronoamperometry. It is revealed that the PtRu nanoparticle modified MWCNT samples display an enhanced electrochemical catalytic activity than commercial PtRu/C electrode. These results show that PtRu nanoparticles may find applications to fuel cells.

• 出版日期2012-2-15
• 单位曲阜师范大学