Synthesis and Performance of Polyvinylpyrrolidone‐Protected Pd Nanoparticles Supported on TiO2MWCNTs under Protection of PVP for in Alcohols Oxidation in Alkaline Media

This paper describes the synthesis and performance of Pd/p‐TiO₂‐MWCNTs for alcohol electrooxidation. Regulation of the steric repulsive forces of polyvinylpyrrolidone was used to achieve even dispersion of Pd nanoparticles over the TiO₂ surfaces. The order of the electroactivities of the Pd/p‐TiO₂? MWCNTs in alcohol oxidation was ethanol>ethylene glycol>methanol. The order of the stabilities of alcohol oxidation by Pd/p‐TiO₂? MWCNTs was ethylene glycol>ethanol>methanol. Electroimpedance spectroscopy showed that at a potential of ?0.1 V, the Pd/p‐TiO₂? MWCNTs had good tolerance of adsorbed CO in ethylene glycol oxidation, and at ?0.2 V, the Pd/p‐TiO₂? MWCNTs had good adsorbed CO tolerance in methanol oxidation.