磁性Fe3O4/石墨烯Photo-Fenton催化剂的制备及其催化活性
Preparation and Catalytic Properties of Fe3O4/Graphene Magnetically Separable Photo-Fenton Catalyst
作者单位
何光裕 常州大学江苏省精细化工重点实验室常州 213164; 南京理工大学教育部软化学与功能材料重点实验室南京 210094 
张 艳 常州大学江苏省精细化工重点实验室常州 213164 
钱茂公 常州大学江苏省精细化工重点实验室常州 213164 
陈海群 常州大学江苏省精细化工重点实验室常州 213164 
汪 信 南京理工大学教育部软化学与功能材料重点实验室南京 210094 
摘要: 采用共沉淀法制备磁性Fe3O4/GE(石墨烯)催化剂,实现Fe3O4纳米颗粒生长和氧化石墨烯还原同步进行,采用FTIR、XRD、TEM及低温氮吸附-脱附等对Fe3O4/GE纳米催化剂的物相、颗粒粒径及比表面积进行了表征。在H2O2存在条件下,以亚甲基蓝为目标降解物,考察了在模拟太阳光下Fe3O4/GE的催化活性,当氧化石墨烯与Fe3O4的质量比为1∶10时,经过2 h催化反应,在pH=6条件下,对亚甲基蓝的降解率达到98.7%,经过10次循环使用后对染料溶液的降解率仍保持在95.7%以上,明显优于纯的Fe3O4
关键词: 纳米Fe3O4/GE  磁分离  Photo-Fenton反应
基金项目: 
Abstract: A magnetically separable Fe3O4/Graphene(GE) catalyst was prepared by a facile co-precipitation method. The method features the reduction of graphene oxide and formation of Fe3O4 nanoparticles in one step. Fe3O4/Graphene catalyst was characterized in terms of particle size, crystal structure and surface area by TEM, FTIR, XRD and low temperature nitrogen adsorption-desorption. In the presence of H2O2, the catalytic activities were evaluated by degradation of Methylene blue aqueous solution under simulated sunlight irradiation. The results indicate that catalyst with graphene oxide/Fe3O4 mass ratio of 1:10 shows the highest degradation rate of 98.7% at pH value of 6 in 2 h. The catalyst can be easily separated by an external magnetic field. A degradation rate of 95.7% can be maintained after 10 cycles.
Keywords: nano Fe3O4/GE  magnetically separable  photo-fenton reaction
 
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何光裕,张 艳,钱茂公,陈海群,汪 信.磁性Fe3O4/石墨烯Photo-Fenton催化剂的制备及其催化活性[J].无机化学学报,2012,28(11):2306-2312.
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