• 文献标题:   An investigation on the structure properties of platinum nanoparticle deposition on graphene sheets by gamma-ray irradiation: a study of methanol electro-oxidation by synthesis catalyst
  • 文献类型:   Article, Early Access
  • 作  者:   KIANFAR S, GOLIKAND AN, ZARENEZHAD B
  • 作者关键词:   electrochemical study, gammaray irradiation, methanol oxidation, radiation reduction, pt/rgo nanocatalyst
  • 出版物名称:   CHEMICAL PAPERS
  • ISSN:   2585-7290 EI 1336-9075
  • 通讯作者地址:   Semnan Univ
  • 被引频次:   0
  • DOI:   10.1007/s11696-020-01430-9 EA NOV 2020
  • 出版年:  

▎ 摘  要

This is an investigation about the influence of synthesis conditions of graphene oxide (GO) such as KMnO4 concentration and H2SO4/H3PO4 ratio on the structural and electrochemical properties of the Pt/rGO nanocatalyst produced based on gamma irradiation. The catalytic characterizations were evaluated by cyclic voltammetry (CV), impedance spectroscopy (EIS), chronoamperometry (CA), XRD, TEM, FTIR, and Raman. The Pt/rGO for 0.01 g/ml of KMNO4 (Pt-G0.01 K) exhibited the highest stability and anodic peak of current with values of 0.1150 and 17.5 mA/cm(2) in terms of methanol oxidation and this value decreased with increasing it. Electrochemical activities enhanced with an increase in acid ratio of 0.07 mA/cm(2) for Pt-G50 to 6.46 mA/cm(2) for Pt-G100. TEM images showed that the ratio of H2SO4/H3PO4 was effective on the size and concentration of KMnO4 on the amount of produced nanoparticles. The structural defects of Pt-G100 were less than those of the other similar catalysts. Finally, the study proved that manipulation of synthesis parameters of support can significantly change the structural and electrochemical properties of the Pt/rGO nanocatalyst in the radiation technique. Graphic abstract