摘要
采用一种新的水热法合成了GO@Fe_3O_4复合材料,对其进行了表征,探究了其吸附亚甲基蓝的性能和机理。结果表明:GO@Fe_3O_4成功合成,且在外加磁场下可以实现复合材料的快速回收;当吸附剂添加量为10mg,pH为11,温度为35℃时,平衡吸附量达到180 mg/g;另外GO@Fe_3O_4对亚甲基蓝的吸附动力学遵循准二级动力学方程,等温吸附模型符合Langmuir模型,属于化学单层吸附。
In this work,GO@Fe3O4 composite was synthesized by hydrothermal method and it was characterized.The adsorption effect and adsorption mechanism of GO@Fe3O4 on methylene blue was studied.The results showed that GO@Fe3O4 composite was successfully synthesized,and it can be quickly recovered under the action of magnetic force.Under the conditions of adsorbent dosage 10mg,initial methylene blue pH 11 and temperature 35℃,the adsorption capacity was up to 180 mg/g.The isothermal adsorption conformed to the Langmuir model.The adsorption reaction kinetics could be fitted by pseudo-second-order kinetic equation,which is a chemical monolayer adsorption.
作者
陈宁宁
丁长坤
张宇鑫
朱吉凯
CHEN Ning-ning;DING Chang-kun;ZHANG Yu-xin;ZHU Ji-kai(School of Materials Science and Engineering,Tiangong University,Tianjin 300387;State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387)
出处
《天津化工》
CAS
2021年第4期25-28,共4页
Tianjin Chemical Industry
基金
天津市教委科研计划项目(2019ZD04)。
关键词
磁性
氧化石墨烯
水热法
亚甲基蓝
吸附
magnetism
GO
hydrothermal method
methylene blue
adsorption
