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PdSn纳米海绵的制备及其对甲酸电催化的性能研究

发表时间:2020-03-31  浏览量:125  下载量:14
全部作者: 洪林艳,董奇志,李慧子,覃倩,谢剑
作者单位: 湖南大学化学化工学院;长郡教育集团文郡洋沙湖中学
摘 要: 为提高催化剂的催化性能以及降低催化剂的成本,采用液相还原法,以硼氢化钠为还原剂,在室温下成功地制备了PdSn纳米海绵(PdSn nanosponges,PdSn NSs)催化剂。利用X射线衍射(X-ray diffraction,XRD)、透射电子显微镜(transmission electron microscope,TEM)、扫描电子显微镜(scanning electron microscope,SEM)、能量色散X射线光谱(energy dispersive X-ray spectroscopy,EDX)等物理手段对所制备催化剂的相结构、成分及形貌进行表征。同时通过循环伏安法及计时电流法等电化学手段,对该催化剂对甲酸的电催化氧化性能进行研究。结果表明,PdSn NSs催化剂对甲酸的催化氧化具有较好的催化活性及稳定性,这说明金属Sn的引入不仅可以提高催化剂的催化活性还能提高催化剂的稳定性。
关 键 词: 物理化学;二元合金催化剂;纳米海绵;甲酸;电催化
Title: Preparation of PdSn nanosponges and its electrocatalytic properties for formic acid
Author: HONG Linyan,DONG Qizhi,LI Huizi,QIN Qian,XIE Jian
Organization: College of Chemistry and Chemical Engineering, Hunan University; Changjun Education Group Wenjun Yangshahu High School
Abstract: In order to improve the catalytic performance and reduce the cost of the catalyst, PdSn nanosponges (PdSn NSs) catalyst was successfully prepared in this paper at room temperature with sodium borohydride as reducing agent by liquid-phase reduction method. The phase structure, composition and morphology of the prepared catalyst were characterized by some physical methods, such as X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX). At the same time, the electrocatalytic oxidation performance of the catalyst for formic acid was studied by electrochemical methods, such as cyclic voltammetry and timing current method. The results show that the PdSn NSs catalyst has good catalytic activity and stability for the catalytic oxidation of formic acid, which indicates that the introduction of metal Sn can not only improve the catalytic activity but also improve the stability of the catalyst.
Key words: physical chemistry; binary alloy catalyst; nanosponges; formic acid; electrocatalysis
发表期数: 2020年3月第1期
引用格式: 洪林艳,董奇志,李慧子,等. PdSn纳米海绵的制备及其对甲酸电催化的性能研究[J]. 中国科技论文在线精品论文,2020,13(1):82-89.
 
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