一步法合成γ-Fe_2O_3/还原石墨烯复合磁性材料吸附去除水中染料  

γ- Fe_2O_3/Reduced Graphene Oxides Magnetic Nanocomposites Preparation with One Step Synthesis Method for Dye Adsorption

作　　者：刘杰[1] 丁昭霞[1] 范峻雨 

机构地区：[1]后勤工程学院国防建筑规划与环境工程系,重庆401331

出　　处：《后勤工程学院学报》2017年第1期1-5,共5页Journal of Logistical Engineering University

基　　金：国家自然科学基金项目(51508564)

摘　　要：将γ-Fe_2O_3/reduced graphene oxides(rGO)复合磁性材料作为吸附剂用于吸附去除水中的甲基蓝,首先借助氧化还原反应实现了一步法合成γ-Fe_2O_3/rGO复合磁性材料,然后通过X射线衍射(XRD)分析、扫描电镜(SEM)和透射电镜(TEM)分析,振动式磁强计(VSM)分析、X射线光电子能谱(XPS)分析确定了复合磁性材料的性质和结构特征。吸附等温线的结果表明:γ-Fe_2O_3/rGO复合磁性材料能够高效去除水中的甲基蓝,最大饱和吸附量达到了86.732 mmol/g;同时,γ-Fe_2O_3/rGO复合磁性材料还具有良好的稳定性和耐久性,循环使用5次后,对甲基蓝的去除率仍然维持在50.17%。The efficient degradation of dye in aqueous solution is still a challenge. The γ-Fe_2O_3/reduced graphene oxides(rGO) magnetic nanocomposites were used as adsorbents for adsorption removal of methyl blue. Firstly, the γ-Fe_2O_3/rGO magnetic nanocomposites were prepared with one step synthesis method by means of the redox reaction. And then, X-ray diffraction(XRD)analysis, scanning electron microscopy(SEM), transmission electron microscopy(TEM), vibrating sample magnetometer(VSM) and X-ray photoelectron spectroscopy(XPS) analysis were applied to characterize the property and structure of the synthesized nanocomposites. The results of isotherm show that the methyl blue can be degraded efficiently. The maximum adsorption capacity reachs to86.732 mmol/g. Meanwhile, the γ-Fe_2O_3/rGO magnetic nanocomposites show better reusability and stability. The removal efficiency is still 50.17% after the γ-Fe_2O_3/rGO magnetic nanocomposites' 5th cycle application.

关 键 词：γ-Fe2O3/rGO复合磁性材料 磁性 甲基蓝 吸附 

分 类 号：TU992[建筑科学—市政工程]