PdSn/Fe_3O_4-C催化剂的制备及其对乙醇氧化的电催化性能  

Preparation of PdSn/Fe_3O_4-C Catalysts and Their Electro-catalytic Activities for The Oxidation of Ethyl Alcohol

作　　者：邹涛[1] 易清风[1] 张媛媛[1] 向柏霖[2] 周秀林[1] ZOU Tao YI Qing-feng ZHANG Yuan-yuan XIANG Bai-lin ZHOU Xiu-lin(School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China Chemistry and Material Engineering Department, Huaihua University, Huaihua 418000, China)

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201 [2]怀化学院化学与材料工程学院,湖南怀化418000

出　　处：《合成化学》2017年第6期480-486,共7页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目(21376070);湖南省研究生科研创新项目(CX2016B567)

摘　　要：采用包覆法制得不同Fe_3O_4含量的载体Fe_3O_4-C(1),以PdCl_2和SnCl_2·2H_2O为金属前驱体,采用化学还原法制得催化剂(PdSn/1),其结构和性能经TEM,XRD和EDS表征。采用循环伏安法(CV)、计时电流法(CA)和交流阻抗(EIS)技术研究了PdSn/1在碱性条件下对乙醇氧化的电催化性能。结果表明:PdSn/1(5%)表现出较高的电催化活性,乙醇氧化的峰电流密度达到147 mA·cm^(-2);相比于Pd/C,PdSn/1(5%)对乙醇氧化反应的电荷转移阻力也有大幅度下降。Fe3O4-C （1） with different quantities of Fe3O4 were prepared by coating method. The nano-catalysts（PdSn/1） were prepared by reduction method, using PdCl2 and SnCl2 ·2H2O as metal precursor. The structures and properties were characterized by TEM, XRD and EDS. The electroactiv- ity of PdSn/1 for ethanol oxidation in alkaline media were studied by cyclic voltammetry （CV） , chrono- amperometry（CA） and electrochemical impedance spectra （EIS）. The results showed that PdSn/1 （5 % ） showed the rent density of 147 transfer resistance highest catalytic activity for ethanol oxidation wuth the ethanol oxidation peak cur- mA · cm-2 Compared with Pd/C, PdSn/1（5% ） presents the much lower charge for ethanol oxidation reaction.

关 键 词：钯催化剂 乙醇氧化 钯锡 燃料电池 制备 电催化性能 

分 类 号：O614.823[理学—无机化学]