四氧化三铁/还原石墨烯(Fe_3O_4/rGO)催化H_2O_2电还原

Fe_3O_4/Reduced Graphene Oxide(Fe_3O_4/rGO) for H_2O_2 Electroreduction Reaction

通过水热合成法制备Fe_3O_4/还原石墨烯(Fe_3O_4/rGO)复合催化剂.通过X射线衍射(XRD)、扫描电镜(SEM)对复合催化剂进行表征,获得的Fe_3O_4均匀地分布在石墨烯表面,平均粒径为20~30nm.电化学(CV,LSV,CA,EIS)测试表明:Fe_3O_4/rGO复合催化剂的催化性能高于Fe_3O_4催化剂的催化性能.当E=-0.6V时,Fe_3O_4/rGO复合催化剂电流密度可达4.32m A/cm^2,约是Fe_3O_4催化剂的9.4倍.

Fe3O4 decorated nanospheres reduced graphene oxide composite electrocatalysts.FejO4 was prepared by the hydrothermal synthesis method. The morphology and surface state of the Fe3O4/rGO electroeatalyst were characterized by X-ray diffractionanalysis （XRD） and scanning electron microscopy （SEM）. The catalyst particles were homoge- neously distributed on the surface of the carrier with an average particle size of about 20-30nm. The addition of gra- phene influenced the crystal lattice structure of Fe3O4 catalysts. Electrochemical （CV, LSV, CA, EIS.） data showed that the eletrocatalytic activity of the Fe3O4/rGO electrocatalyst for hydrogen peroxide electroreduetion was much higher than that of Fe3O4. At E=-0.6V Fe3O4/rGO as the electrocatalyst was higher 4.32mA/em2 than that Fe3O4 as electrocatalyst about 9.4 times.