摘要
首先将氧化石墨烯、聚丙烯酰胺和硝酸铁进行水热反应,然后通过冷冻干燥制备了石墨烯/铁基复合材料,通过扫描电子显微镜和傅里叶变换红外光谱对石墨烯/铁基复合材料进行了表征。最后研究了石墨烯/铁基复合材料对六价铬的吸附性能。结果表明,石墨烯/铁基复合材料呈黑色圆柱体,一层一层堆叠在一起,结构规则,具有丰富的表面官能团。在实验条件下,吸附容量随着六价铬初始浓度的增加而增大,吸附平衡时间为150 min,pH值为6时吸附容量最大。当初始浓度为5 mg/L,吸附时间为150 min,pH值为6时吸附容量达到最大为13.06 mg/g。石墨烯/铁基复合材料对水体中六价铬具有优异的吸附性能。
Firstly,the hydrothermal reaction of graphene oxide,polyacrylamide and ferric nitrate was carried out,and then graphene/iron matrix composites were prepared by freeze-drying.The graphene/iron matrix composites were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy.Finally,the adsorption properties of graphene/iron matrix composites for hexavalent Chromium were studied.The results showed that the graphene/iron matrix composites are black cylinders stacked on top of each other with regular structures and have rich surface functional groups.Under the experimental conditions,the adsorption capacity increases with the increase of the initial concentration of hexavalent Chromium.The adsorption equilibrium time is 150 min,and the adsorption capacity reaches the maximum at pH 6.When the initial concentration was 5 mg/L,the adsorption time was 150 min,and pH was 6,the maximum adsorption capacity reached 13.06 mg/g.Graphene/iron matrix composites have excellent adsorption properties for hexavalent Chromium in water.
作者
袁阳
杨芳
张文倩
欧阳彤
李桂全
朱家辉
王丽平
Yuan Yang;Yang Fang;Zhang Wenqian;Ouyang Tong;Li Guiquan;Zhu Jiahui;Wang Liping(College of Biological and Environmental Engineering,Changsha University,Hunan 410022,China)
出处
《山东化工》
CAS
2022年第14期31-33,共3页
Shandong Chemical Industry
基金
2020年湖南省大学生创新训练项目(项目编号:S202011077021)资助。
关键词
石墨烯/铁基复合材料
水热反应
冷冻干燥
吸附
六价铬
graphene/iron matrix composites
hydrothermal reaction
freeze-drying
adsorption
hexavalent chromium
