物理化学学报2017，Vol.33Issue(3)：563-572,10.DOI:10.3866/PKU.WHXB201612072
PtNiSnO2/C的制备、表征及其电催化氧化乙醇活性
Preparation and Characterization of Pt-Ni-SnO2/C for Ethanol Oxidation Reaction
摘要
Abstract
Aseries of Pt/C,Pt-Ni1/3/C,Pt-SnO2/C and Pt-Nix-SnO2/C (x =1/4,1/3,2/3,1) anode electro-catalysts have been synthesized by an improved B(o)nnemann method.The crystal structure,surface morphology and surface electronic structure were characterizated by X-ray diffraction (XRD),high resolution transmission electron microscope (HR-TEM) and X-ray photoelectron spectroscopy (XPS).The electro-catalytic activities were characterizated by linear sweep voltammetry (LSV) and amperometric current density-time (j-t) curve techniques for ethanol oxidation reaction (EOR).In situ spectroelectrochemical studies have been used to identity adsorbed reaction intermediates and products (in situ Fourier transform infrared spectroscopy,FT-IR).XRD and HR-TEM analysis revealed two phases in the ternary Pt-Ni-SnO2/C catalyst:Pt-Ni alloys and SnO2.XPS results show that the electronic structure of the Pt in Pt-Ni1/3-SnO2/C might be changed due to the addition of Ni.The activity of Pt-Ni-SnO2/C for EOR was found to be higher than that of Pt/C,Pt-Ni/C and Pt-SnO2/C catalysts.The incorporation of Ni and SnO2 did not significantly improve C-C bond breaking for complete oxidation of ethanol,but the synergy under the low potential (0.1 V) to strengthen the further oxidation of acetaldehyde,generate the acetic acid.关键词
铂/镍/二氧化锡/乙醇电氧化Key words
Platinum/Nickel/Stannic oxide/Ethanol electricoxidation分类
化学化工引用本文复制引用
黄明辉,金碧瑶,赵莲花,孙世刚..PtNiSnO2/C的制备、表征及其电催化氧化乙醇活性[J].物理化学学报,2017,33(3):563-572,10.基金项目
The project was supported by the Jilin Provincial Science and Technology Project of China (20120741) and Opening Foundation of State Key Laboratory of Physical Chemistry of Solid Surface of Xiamen University,China (201407).吉林省科技发展计划项目(20120741)和厦门大学固体表面物理化学国家重点实验室开放课题(201407)资助 （20120741）
