Fe@NC/氧化石墨烯复合电催化剂的构筑及其对甲醇氧化性能研究  

Research of Fe@NC Graphene Oxide Composite Electrocatalyst Construction and Its Performance on Methanol Oxidation Reaction

作　　者：刘娟[1] 邱海芳 邵守言[1] 朱桂生[1] 黄春霞 宋子祥 LIU Juan;QIU Hai-fang;SHAO Shou-yan;ZHU Gui-sheng;HUANG Chun-xia;SONG Zi-xiang(Jiangsu SOPO Corporation(Group)Ltd.,Zhenjiang 212006,China;School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏索普(集团)有限公司,江苏镇江212006 [2]江苏大学化学化工学院,江苏镇江212013

出　　处：《安徽化工》2022年第6期44-49,53,共7页Anhui Chemical Industry

基　　金：镇江市重点研发计划-产业前瞻与共性关键技术面上项目(GY2019011)。

摘　　要：首先以二甲基咪唑锌盐ZIF-8为模板,在ZIF-8颗粒中进行原位铁离子的掺杂。在制备过程中加入氧化石墨烯(GO)进行复合,将得到的固体经高温碳化后制备出Fe@NC/还原氧化石墨烯复合纳米材料。采用扫描电子显微镜(SEM)、投射电子显微镜(TEM)以及X射线衍射(XRD)表征材料的形貌和结构。将Fe@NC/r GO复合纳米材料制成墨液,分散在工作电极有效区后晾干用于测量材料的甲醇氧化活性,结果显示:用Fe@NC/r GO复合纳米材料制备而成的活性电极在0.5 M KOH+1 M CH3OH和进行循环伏安测试,在30 m Vs^(-1)扫速下,电压为0.88 V时,电流密度高达112.3 m A cm^(-2)。在对材料的循环稳定性进行测试时,在30 m V s^(-1)扫速下进行高达500圈的循环之后,峰电流密度也能保持原电流密度的73.45%,表明Fe@NC/rGO复合纳米材料具有优异的稳定性。First,with ZIF-8 as a template,in-situ iron doping is carried out in ZIF-8 particles.Graphene oxide(GO)is added for compounding in the above preparation process,and the obtained solid is carbonized at high temperature to prepare Fe@NC/reduced graphene oxide composite nanomaterials.Scanning electron microscope(SEM),projection electron microscope(TEM)and X-ray diffraction(XRD)were used to characterize the morphology and structure of the material.The Fe@NC/r GO composite nano material was made into ink,dispersed in the effective area of the working electrode and dried to measure the methanol oxidation activity of the material.The results showed that:an active electrode made of Fe@NC/r GO composite nano material in 0.5 M KOH+1 M CH3OH and cyclic voltammetry test,the current density is as high as 112.3 m A cm^(-2)at 0.88 V at a sweep rate of 30 m V s^(-1).When testing the cyclic stability of the material,the peak current density can also maintain 73.45%of the original current density after 500 cycles at a sweep speed of 30 m V s^(-1),indicating that Fe@NC/rGO composite nanomaterials has excellent stability.

关 键 词：石墨烯 ZIF-8 铁 Fe@NC/rGO 醇氧化 

分 类 号：O643.36[理学—物理化学] X703[理学—化学]