人工晶体学报2017，Vol.46Issue(11)：2169-2177,9.
磁性Fe3O4/膨胀石墨对亚甲基蓝的吸附性能研究
Study on the Adsorption Property of Magnetic Fe3O4/Expanded Graphite for Methylene Blue
摘要
Abstract
Using expanded graphite (EG) as carrier,the magnetic Fe3 O4/expanded graphite (MEG) was prepared by hydrothermal method.The structures and morphologies of the MEG were characterized by Xray diffraction (XRD) and Scanning electron microscope (SEM).Methylene Blue was used as a probe pollutant to investigate the effects of pH value,adsorption time,salt ionic strength and initial concentration on adsorption property,corresponding adsorption kinetics and adsorption isotherm were researched.The results indicate that the adsorption rate and adsorption capacity of 50 mg · L-1 methylene blue can reache 97.03％ and 48.52 mg · g-1 in the condition of pH 7,absorption time 60 min;The adsorption capacity reduces with the Na + and Ca2+ increase;the adsorption behavior is mainly in accordance with the pseudo-second-order kinetics model and Langmuir model.The recovery rate can reach 97.51％ by magnet.The adsorption amount for Methylene Blue is also 41.72 mg · g-1 after five adsorption-regeneration cycles,which show that MEG has stable reuse ability.关键词
磁性Fe3O4/膨胀石墨/亚甲基蓝/吸附/磁分离Key words
magnetic Fe3O4/expanded graphite/methylene Blue/adsorption/magnetic separation分类
数理科学引用本文复制引用
范文娟,常会..磁性Fe3O4/膨胀石墨对亚甲基蓝的吸附性能研究[J].人工晶体学报,2017,46(11):2169-2177,9.基金项目
四川省细鳞片深加工重点实验室项目(2013004-2014) （2013004-2014）
结构化学国家重点实验室开放项目(20150012) （20150012）
四川省大学生创新创业训练计划项目(2017008525) （2017008525）
四川省科技支撑计划项目(15zc2042) （15zc2042）
