荔枝状E-GE3D/Cu复合材料的制备及其催化降解Cr（Ⅵ）的性能研究

Construction of lychee-like E-GE3D/Cu and the application in catalytic degradation of Cr（Ⅵ）

以葡萄糖、氯化铵和氯化铁为原料,采用一步简单加热原位生成的铁(Fe)纳米颗粒为模板以及葡萄糖石墨化的催化剂,制备了三维石墨烯[E-Graphene3D(E-GE3D)],并以此为载体采用溶剂热法合成了荔枝状E-GE3D/Cu复合材料,并对E-GE3D/Cu复合材料的组成、结构和形貌等进行了测试。还考察了E-GE3D/Cu催化降解六价铬[Cr(Ⅵ)]的性能,在铜(Cu)含量为75%(wt,质量分数)制得的E-GE3D/Cu0.75对Cr(Ⅵ)进行降解,在E-GE3D/Cu0.75投入量为8mg,反应温度为25℃,溶液的pH=2,反应时间为9min条件下,E-GE3D/Cu对Cr(Ⅵ)的降解率高达100.0%,具有较好的降解性能。

Fe nanoparticles,produced in the process of one-step facile heating with glucose,ammonium chloride and ferric chloride as raw materials,were used as the template and catalyst for glucose graphitization.They were subsequently etched to generate E-Graphene3D(E-GE3D).Then,employing a solvothermal method,it was used as a medium to synthesize lychee-like E-Graphene3D/Cu(E-GE3D/Cu).Through using the methods,E-GE3D/Cu was analyzed in terms of composition,structure and morphology.The catalytic activity of E-GE3D/Cu in the degradation of hexavalent chromium was also investigated.E-GE3D/Cu0.75 prepared with 75wt%of Cu was used to degrade hexavalent chromium and the degradation rate reached up to 100.0%within 9min when the dosage of the catalyst was 8mg under the condition of pH=2 at 25℃,which showed a good degradation property.