N掺杂石墨烯负载AgPd纳米催化剂室温高效催化甲酸分解制氢

Synthesis of 3D nitrogen-doped graphene supported AgPd nanocatalysts and application in catalytic dehydrogenation of formic acid for chemical hydrogen storage

本文制备了一种AgPd纳米粒子负载在氮掺杂石墨烯上的催化剂(AgPd/N-G).通过一系列分析技术表征了样品的元素组成、微观结构、光电子能谱等,并测试了其对于甲酸分解制氢反应的催化活性.结果表明,由于氮的掺杂,该催化剂在保留石墨烯导电性、机械性能及高的比表面积等优异特性的同时,大大增加了其活性位点.同时,有效地加强了载体与AgPd金属纳米粒子的结合力,使得金属粒子分散性大大提高,显著增加了催化剂的催化活性和稳定性.

AgPd nanoparticles immobilized on nitrogen-doped graphene（AgPd NPs/N-G） have been synthesized, and characterized by a series of analytical techniques. Their catalytic activities towards dehydrogenation of formic acid at room temperature for hydrogen storage have been investigated. The results show that graphene doped with N atoms can effectively improve its active site as well as keep its superior electrical conductivity, good stability and high specific surface area. Furthermore, N atoms dramatically strengthen the interaction between AgPd nanoparticals and the support, which greatly increased the dispersion of the catalysts and significantly enhanced the catalytic activity and stability.