纳米多孔Pt-Si合金对乙醇的电催化氧化研究  

A Study of Electrocatalytic Ethanol Oxidation of Nanoporous PtSi Alloy

作　　者：卢娜丽 李尧[3,2] 张磊[2,4] 房勇 钱斌[2,4] 韩志达[2,4] 江学范[2,4] LU Nali;LI Yao;ZHANG Lei;FANG Yong;QIAN Bin;HAN Zhida;JIANG Xuefan(School of Materials Science and Engineering,China University of Mining and Technology,Xuzhou 221116;College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123;School of Physics and Electronic Engineering,Changshu Institute of Technology,Changshu 215500;Jiangsu Key Laboratory of Advanced Functional Materials,Changshu 215500,China)

机构地区：[1]中国矿业大学材料科学与工程学院,江苏徐州221116 [2]常熟理工学院物理与电子工程学院,江苏常熟215500 [3]苏州大学材料与化学化工学部,江苏苏州215123 [4]江苏省新型功能材料重点建设实验室,江苏常熟215500

出　　处：《常熟理工学院学报》2018年第5期19-24,共6页Journal of Changshu Institute of Technology

基　　金：国家自然科学基金项目"Ni-Mn基铁磁形状记忆合金的低温相分离和交换偏置效应研究"(51371004)

摘　　要：近几年,纳米多孔合金因具有比表面积大、密度低、操作简单等优点,在催化、磁学、医药等领域得到了广泛的应用.本文通过熔体快淬结合去合金化的方法制备纳米多孔结构Pt-Si合金,用X射线衍射、X射线光电子能谱、扫描电子显微镜和透射电子显微镜对材料进行了表征,并研究了其在酸性条件下对乙醇氧化的电催化性能.结果表明,得到的Pt-Si合金拥有三维双连续结构,其平均尺寸在5 nm左右.和商业Pt/C催化剂相比,纳米多孔Pt-Si合金在乙醇催化氧化反应中具有更高的电催化活性和稳定性,是一种很有潜力的直接乙醇燃料电池阳极催化剂.In recent years,nanoporous alloys have presented the advantages of a large specific surface area,low density,and simple operation,and they have been widely used in the fields of catalysis,magnetism,and medicine.Nanoporous PtSi alloy was prepared by melt-spun and chemical dealloying,and was characterized by X-ray diffraction,X-ray photoelectron spectroscopy,scanning electron microscope,and transmission electron microscopy.PtSi alloys possess a three-dimensional bicontinuous structure and an average size of 5 nanometers.Compared with commercial Pt/C catalysts,nanoporous PtSi alloys exhibit excellent electrocatalytic activity and stability in ethanol-catalyzed oxidation reactions and are considered to be a promising catalyst in direct ethanol fuel cells.

关 键 词：去合金化 纳米多孔 电催化 乙醇氧化反应 

分 类 号：TM911.48[电气工程—电力电子与电力传动]