摘要
以氧化石墨(GO)为原料,利用超临界CO2和甲醇混合流体的黏度低、密度可控、表面张力为零等优点,以二甲基铵硼烷(DMAB)为还原剂将GO还原为石墨烯(RGO),并将PtRuNi、PtRu、Pt等金属纳米粒子成功地负载到石墨烯表面。通过X射线衍射(XRD)、透射电子显微镜(TEM)等方法分析了PtRuNi/RGO等复合物的结构特征,并用电化学的方法比较了PtRuNi/RGO,PtRu/RGO,Pt/RGO与PtRuNi/XC-72,PtRu/XC-72,Pt/XC-72对乙醇氧化的电催化活性。结果显示,所制备的PtRuNi/RGO具有更高的乙醇电催化效能。
In this experiment,graphite oxide（GO）,as a raw material,was reduced to graphene（RGO）by the reducing agent dimethyl ammonium borane（DMAB）,and PtRuNi,PtRu,Pt metal nanoparticles were successfully loaded onto the surface of the graphene.In this process,we used supercritical CO2 fluid because it has unique properties such as low viscosity,high diffusion and near zero surface tension etc.We analyzed structural characteristics of PtRuNi/RGO composites using Transmission Electron Microscopy（TEM）and X Ray Diffraction（XRD）.The electrocatalytic performance of PtRuNi/RGO,PtRu/RGO,Pt/RGO and PtRuNi/XC-72,PtRu/XC-72,Pt/XC-72 ethanol oxidation was evaluated.The results show that the PtRuNi/RGO has significantly improved electrocatalytic activity and stability to ethanol oxidation.
出处
《青岛科技大学学报（自然科学版）》
CAS
2016年第2期151-155,161,共6页
Journal of Qingdao University of Science and Technology:Natural Science Edition
基金
国家自然科学基金项目(51373088
51073082)
青岛市科技计划基础研究项目(12-1-4-3-(7)-JCH
12-1-4-3-(25)-JCH)
关键词
石墨烯
乙醇
超临界流体
铂钌镍合金
电催化
graphene
ethanol
supercritical fluid
platinum-ruthenium-nickel alloy
electrocatalysis
作者简介
谭东兴（1990-），男，硕士研究生．
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