氮掺杂石墨烯负载八面体氧化亚铜复合材料的制备及其电催化性能

发布时间：2018-03-07 07:27

本文选题：电化学　切入点：催化　出处：《化工进展》2017年09期 　论文类型：期刊论文

【摘要】：采用改良的Hummers方法制备出氧化石墨烯(GO),接着利用氮气流通过浓氨水将氨气载入管式炉中,与氧化石墨烯混合。在此过程中,氧化石墨烯表面的含氧官能团发生分解、脱离形成活性中心,与浓氨水发生相互作用,从而实现氮的掺杂,同时氧化石墨烯在高温下被还原成石墨烯,最终形成氮掺杂石墨烯N-rGO。采用化学沉淀法将N-rGO与硫酸铜溶液混合,在还原剂水合肼的作用下八面体氧化亚铜被负载到氮掺杂石墨烯上形成复合材料Cu_2O-N-rGO。通过XRD、SEM和XPS手段对其进行表征分析,结果表明氮原子在石墨烯骨架上以吡咯氮、吡啶氮和石墨氮的形式存在,形成的八面体氧化亚铜被均匀地负载到N-rGO表面。采用循环伏安法和计时电流法对该复合材料Cu_2O-N-rGO的催化性能进行测试,实验结果表明,合成的复合材料Cu_2O-N-rGO对葡萄糖和过氧化氢有良好的催化性能。
[Abstract]:The modified Hummers method was used to prepare graphene oxide, and then ammonia gas was mixed with graphene oxide in a tube furnace by using nitrogen, and then the oxygen-containing functional groups on the surface of graphene oxide were decomposed. The N-doped graphene was reduced to graphene at high temperature to form N-doped graphene N-rGO. N-rGO was mixed with cupric sulfate solution by chemical precipitation method. Cu2O-N-rGO was formed by loading cuprous oxide on nitrogen-doped graphene under the action of hydrazine hydrate. The structure of Cu2O-N-rGO was characterized by XRDX SEM and XPS. The results showed that the nitrogen atom was pyrrolidene on the graphene skeleton. In the form of pyridine nitrogen and graphite nitrogen, copper oxide formed by octahedron was uniformly loaded onto N-rGO surface. The catalytic properties of the composite Cu_2O-N-rGO were measured by cyclic voltammetry and chronoamperometry. The synthesized composite Cu_2O-N-rGO has good catalytic performance for glucose and hydrogen peroxide.
【作者单位】：太原理工大学化学化工学院;
【基金】：山西省自然科学基金项目(2013011012-1)
【分类号】：O643.36;TP212

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