Pt/三苯胺烯分子纳米复合物的制备及光催化作用

摘要

Platinum/triphenylamine ethylene nanocomposite (Pt@DPSDA) was prepared using an ethanol reduction method and characterized with UV-vis,TEM,FTIR,XRD,fluorescence spectroscopy,and photo-electrochemical method,respectively.Platinum core/conjugated organic molecule shell nanocomposite was formed as DPSDA molecules attached to the surface Pt atoms of platinum nanoparticles through carboxyl groups.DPSDA molecules in excited state may transfer photo-electron to the platinum nanoparticle.Under irradiation of UV-vis light,hydrogen was produced from photodecomposition of water using Pt@DPSDA nanocomposite as the catalyst.%采用乙醇还原法制备了金属Pt/三苯胺烯共轭分子纳米复合物(Pt@DPSDA),通过UV-vis、TEM、FTIR、XRD、荧光、光电化学等方法对纳米复合物进行了表征.三苯胺烯分子通过分子末端羧基与金属Pt纳米粒子表面原子相互作用,形成以金属Pt纳米粒子为核,三苯胺烯分子为壳的核/壳型纳米复合物.光照下纳米复合物中激发态有机分子与金属Pt纳米粒子之间具有较好的电子转移作用,Pt@DPSDA纳米复合物可以作为催化剂在紫外-可见光照下分解水获得氢气.