首页> 外文期刊>International Journal of Electrochemical Science >Graphene Supported-Pt-M (M = Ru or Pd) for Electrocatalytic Methanol Oxidation
【24h】

Graphene Supported-Pt-M (M = Ru or Pd) for Electrocatalytic Methanol Oxidation

机译:石墨烯负载的Pt-M(M = Ru或Pd)用于电催化甲醇氧化

获取原文
           

摘要

Different methods for preparation of a highly efficient catalyst made of a hybrid of graphene and sub- micron structured Pt-Ru or Pt-Pd is illustrated for methanol oxidation. Graphene is preparedchemically using microwave method or electrochemically by reducing graphene oxide (GO). Glassycarbon (GC) electrodes are modified with the catalyst. The electrocatalytic activity of the surface isexamined for methanol oxidation with cyclic voltammetry (CV), chronoamperometry (CA) andchronocoulometry (CC). The electrocatalytic activity is doubled when graphene is modified with Pt-Pdand increases five times in case of Pt-Ru compared to GC - Pt-Pd and Pt-Ru electrodes, respectively.SEM and AFM are used to characterize the catalyst morphology and surface roughness of the catalyst.Effect of catalyst loading, temperature, stability, and methanol concentration on the catalyst efficiencyare presented.
机译:示出了用于制备由石墨烯和亚微米结构的Pt-Ru或Pt-Pd的混合物制成的高效催化剂的不同方法,用于甲醇氧化。石墨烯是使用微波方法化学制备的,或者是通过还原氧化石墨烯(GO)电化学制备的。玻碳(GC)电极用催化剂改性。用循环伏安法(CV),计时电流法(CA)和计时库仑法(CC)检查表面的电催化活性对甲醇的氧化作用。石墨烯经Pt-Pd修饰后,电催化活性增加一倍,而Pt-Ru修饰的石墨烯与GC-Pt-Pd和Pt-Ru电极相比则增加五倍.SEM和AFM用于表征催化剂的形貌和表面粗糙度提出了催化剂用量,温度,稳定性和甲醇浓度对催化剂效率的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号