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.