多壁碳纳米管负载Pd-Ni电催化剂对乙二醇的电催化氧化  

Pd-Ni/MWCNT Electrocatalysts for Ethylene Glycol Electro-oxidation in Alkaline Medium

作　　者：杨苏东[1] 张校刚[2] 黄建书[1] 孙景玉[1] 

机构地区：[1]新疆大学应用化学研究所,乌鲁木齐830046 [2]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《物理化学学报》2007年第8期1224-1228,共5页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20403014);江苏省自然科学基金(BK2006196)资助项目

摘　　要：采用微波加热还原法制备了不同化学计量比的Pd-Ni复合多壁碳纳米管(Pd-Ni/MWCNT)催化剂.通过X射线衍射(XRD)、透射电镜(TEM)和能量散射谱(EDS)等微结构和组成表征表明,所合成的催化剂中Pd-Ni合金具有较小的纳米颗粒以及较好的分散程度.循环伏安(CV)、线性扫描(LSV)、计时电流方法(CA)和交流阻抗(EIS)等测试表明,Pd-Ni(3∶1)/MWCNT催化剂对乙二醇的电化学氧化具有较高的催化活性.The MWCNT （multi-walled carbon nanotube） electrocatalysts with different Pd/Ni atomic ratios were prepared by microwave reduction method. XRD, TEM, and EDS measurements were used to characterize the composition, particle size, and crystallinity of the catalysts. It showed that the Pd-Ni nanoparticles supported on MWCNTs were small and well dispersed on the surface of MWCNTs. The electrocatalytic oxidation of ethylene glycol （EG） was studied by cyclic voltammetry （CV）, linear sweep voltammetry （LSV）, chronoamperometry （CA） and electrochemical impendance spectroscopy （EIS）. It was found that the performance of ethylene glycol electro-oxidation on Pd-Ni/MWCNT electrocatalysts with a Pd/Ni atomic ratio of 3：1 was the best.

关 键 词：乙二醇 微波还原法 乙二醇氧化 Pd-Ni/MWCNTs 

分 类 号：O643.36[理学—物理化学]