Effects of PVP on catalytic performance of Pt/Gr catalysts for methanol oxidation
GAO Hai-li
LIANG Hui-hui
LIN Jing
HAI Rui-yu
HAN Ming-yu
Abstract：Pt/Gr catalysts were prepared by organic-sol method with polyvinylpyrrolidone (PVP) as complexing agent.The catalysts were characterized by FT-IR, XRD and TEM, and the electrocatalytic performances of the catalysts for methanol oxidation in acid solution were measured.The results showed that the addition of appropriate amount of PVP could greatly improve the dispersion of Pt nanoparticles of Pt/Gr catalysts and reduce the particle size.The electrocatalytic performance and stability of Pt/Gr for methanol oxidation increased with the PVP contents firstly, and then decreased.When the maximum electrocatalytic activity (current density 0.53 A/mgPt) was reached,it was 2.4 times higher than that of Pt/Gr prepared without PVP,and Pt/Gr had higher stability at PVP content=10 mg.
Keywords：PVPPt/Graphenemethanol oxidation
Publication Date：2017-07-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1-7 )