Abstract

Naphthalen-1-ylmethylphosphonic acid was modified on multiwall carbon nanotube( MWCNT) by the π-π stacking interaction. Then,the Pd catalyst was supported on it. Furthermore,the MWCNT supported Pd-Au( Pd-Au/MWCNT) catalyst was facially prepared by the replacement reaction between Pd nanoparticles and HAuCl 4. Transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy measurements showed that non-alloyed Pd-Au nanoparticles were highly dispersed on the surface of MWCNT. Cyclic voltammetry and chronoamperometric measurements indicated that the Pd-Au/MWCNT catalyst exhibited better electrocatalytic activity and stability for formic acid oxidation than that of the Pd/MWCNT catalyst.

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