高分散Pt/C催化剂的制备及其电化学性能研究  

Synthesis and Electrochemical Property of High-Dispersed Pt/C Catalysts

作　　者：许学飞[1] 苏琪映[1] 徐友峰[1] 王騊[1] 王晟[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2012年第6期804-807,共4页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金(31070888;50802088;21103152);浙江省杰出青年科学基金(R2101054);浙江省自然科学基金资助项目(Y4080392;Y406285);浙江理工大学材料科学与工程研究生教育创新示范基地(项目编号3)

摘　　要：以氯铂酸(H2PtCl6.6H2O)为铂源,以PEG(聚乙二醇,聚合度为227)为还原剂,采用水热法制得高分散Pt/C催化材料。使用TEM、XRD及EDS对其进行了表征,并对催化剂的电化学活性面积进行循环伏安法研究。结果表明:通过调节反应条件可以得到高分散Pt/C催化剂,Pt粒子粒径约为5nm,尺寸均一;Pt/C催化剂的分散性越好,其电化学性能就越高。High-dispersed Pt/C catalysts are synthesized via a typical hydrothermal treatment using H2PtC16 · 6H2O as raw materials and PEG as reductant. The morphology, structures, and compositions of the as-prepared Pt/C catalysts are investigated by TEM, XRD, and EDS spectra. Furthermore, the elec- trochemical active surface area of the catalysts is investigated using cyclic voltammetry. The results show that high-dispersed Pt/C catalysts can be obtained by properly adjusting the hydrothermal reaction condi- tions. The diameter of the Pt particle is about 5 nm with uniform size, and a strong dependence between dispersity and electrochemical performance is observed, which reveals that better dispersity of the Pt/C catalysts leads to a higher electrochemical performance.

关 键 词：PT/C 纳米粒子 电化学性能 催化剂 高分散 

分 类 号：TQ426.8[化学工程]