PdCo/RGO催化剂对甲酸的氧化电催化性能  

Performance of PdCo/RGO catalyst for formic acid electro-oxidation

作　　者：胡佳杰[1] 胡翔[1] 姚鹏基 钟丹萍 倪佳敏[1] 邬婷倩 金燕仙[1] 

机构地区：[1]台州学院医药化工学院,浙江台州318000

出　　处：《化学研究》2016年第3期286-290,共5页Chemical Research

基　　金：国家自然科学基金青年项目(21403150);国家创新大学生创新创业训练计划项目(201510350013);台州市科技局项目(1202ky03)

摘　　要：采用硼氢化钾还原法制备了石墨烯负载PdCo催化剂(PdCo/RGO),对催化剂进行了结构形貌表征并考察了其对甲酸氧化的催化性能.表征结果表明催化剂形成了立方面心结构的PdCo合金纳米颗粒.与Pd/RGO催化剂相比,PdCo/RGO催化剂上Pd颗粒团聚现象明显改善,平均粒径大大减小且分散性更好.电化学性能测试结果表明,相比于Pd/RGO催化剂,不同比例的PdCo/RGO催化剂具有不同的甲酸氧化电催化活性和稳定性;其中2Pd1Co/RGO性能最佳,最大甲酸氧化峰电位负向移动约60mV,电流密度增大到2.2倍.PdCo/RGO催化剂催化性能优异,显示了很好的甲酸阳极催化剂应用前景.A novel graphene supported PdCo catalysts（PdCo/RGO）for the formic acid electrooxidation were prepared using potassium borohydride as the reducing agent.According to the XRD results,the average particle size of alloyed nano-PdCo particles on PdCo/RGO catalysts decreases,as well as disperse relatively uniformly,compared to those on Pd/RGO catalyst.Intriguingly,PdCo/RGO catalysts exhibit superior activity in formic acid electro-oxidation than Pd/MWCNTs catalyst,for the potential negatively shift about 60 mV and current density increases 2.2times.This suggests their application has great potential in DFAFCs as highly efficient catalysts.

关 键 词：甲酸 电氧化 PD 石墨烯 

分 类 号：O655.25[理学—分析化学]