摘要
以不同质量比poly(triazine imide)(PTI)-碳纳米管(carbon nanotubes,CNTs)复合物为载体,通过乙二醇还原Pt/Sn前驱体制备了Pt-Sn/PTI-CNTs催化剂。通过X射线衍射(XRD)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)对制备的催化剂结构、形貌和成分进行表征。结果表明,Pt-Sn纳米粒子在载体上高度分散,粒径分布在2.6~3.7nm之间,其主要以金属Pt和SnOx的形式存在。循环伏安(CV)测试表明,PTI的引入对Pt-Sn/PTI-CNTs复合物的催化活性具有明显提升作用,但是加入的量过多会导致电催化性能下降。当加入20%(质量分数)的PTI时,催化剂具有最大的电化学活性面积(ECSA)46.20m^2/g,乙醇电催化性能最佳。
Using poly (triazine imide)(PTI)-carbon nanotubes (CNTs) composite with different mass ratio as catalysts carrier,the Pt-Sn/PTI-CNTs catalysts were synthesized by reducing Pt/Sn precursor with ethylene glycol.The structure and morphology of the catalysts were examined by X-ray diffraction (XRD),transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS).The results show that the Pt-Sn nanoparticles with a mean diameter of 2.6-3.7 nm werehighly dispersed on the carrier,and mainly presentedin the form of metallic Pt and SnOx .Cyclic voltammetry (CV) tests show that the catalytic performance of Pt-Sn/PTI-CNTs was significantly improved with the addition of PTI.However,too much PTI would lead to a decrease in the activity of the catalyst.The electrochemically active surface area (ECSA) of the catalyst was maximized (46.20 m^2/g) at a PTI content of 20wt%,which hadthehighest ethanol electro-catalytic activity.
作者
管强强
王勇
赵强
李晋平
GUAN Qiangqiang;WANG Yong;ZHAO Qiang;LI Jinping(College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization,Taiyuan 030024,China;Research Institute of Coal Chemical Industry,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2019年第6期6185-6190,6196,共7页
Journal of Functional Materials
基金
国家自然科学基金青年资助项目(21706180)
山西省自然科学基金青年资助项目(201801D221079)
