| 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 |
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| 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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