Adsorption characteristics of modified magnetic materials for methylene blue

摘要：
制备了壳聚糖、SiO2改性Fe3O4磁性复合材料,并用于亚甲基蓝的吸附研究.利用FT-IR,XRD,BET和VSM等手段表征了材料的结构和形貌.结果表明,壳聚糖、SiO2成功修饰在Fe3O4磁性材料表面,新制备磁性复合材料具有较大的比表面积和多孔结构,且饱和磁化强度为85.84 emu/g,磁响应明显;新材料对亚甲基蓝的吸附动力学数据与准二级动力学方程拟合较好,等温吸附过程符合Freundlich等温模型.

In this research,chitosan and SiO2modified Fe3O4magnetic materials were prepared,and the adsorption property for methylene blue was studied thoroughly.The structure and morphology of the materials were characterized by FT-IR,XRD,BET and VSM.The results indicated that chitosan and SiO2were successfully modified Fe3O4.The prepared magnetic material obtained a large specific surface area and porous structure,which was beneficial to adsorption.Meanwhile,the saturation magnetization of modified Fe3O4was 85.84 emu/g.The adsorption kinetic data of methylene blue by the new material fitted well with the quasi second-order kinetic equation,and the isothermal adsorption process accorded with the Freundlich isothermal model.

作者：
彭传云 张少文 张星星 吴春来 冯勇 赵丹 赵联朝

Peng Chuanyun;Zhang Shaowen;Zhang Xingxing;Wu Chunlai;Feng Yong;Zhao Dan;Zhao Lianchao(School of Environmental Engineering and Chemistry,Luoyang Institute of Science and Technology,Luoyang 471023,China)

机构地区：
洛阳理工学院环境工程与化学学院

出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2022年第4期82-90,共9页

Journal of Henan Normal University(Natural Science Edition)

基金：
国家自然科学基金(22104046) 河南省基础与前沿技术研究计划项目(162300410017) 河南省科技攻关项目(182102311037) 河南省高等学校重点科研项目(22B150012)。

关键词：
壳聚糖 SiO2 磁性复合材料 吸附性能 亚甲基蓝 吸附动力学 吸附热力学

chitosan SiO2 magnetic composite adsorption property methylene blue adsorption kinetics adsorption thermodynamics

分类号：
O657 [理学—分析化学]

改性磁性材料对亚甲基蓝的吸附特性研究.pdf