磁性金属有机骨架材料FeMPC的制备及其吸附性能研究
Preparation and Adsorption Properties of Magnetic Metal-organic Framework Material FeMPC
唐祝兴 1宋宏权 1张岐龙 1董华2
作者信息
- 1. 沈阳理工大学 环境与化学工程学院,沈阳 110159
- 2. 西北工业集团有限公司,西安 710043
- 折叠
摘要
首先采用水热合成法制备金属有机骨架材料MIL-101(Fe),然后通过煅烧MIL-101(Fe)制备磁性金属有机骨架材料FeMPC,并用于吸附染料废水中的亚甲基蓝.使用扫描电镜、透射电镜、红外光谱等对制备的材料进行表征,考察FeMPC用量、振荡时间、pH等因素对吸附性能的影响.实验结果表明:当FeMPC用量为 25 mg、振荡时间为 70 min、溶液pH为 8时,FeMPC对亚甲基蓝的吸附效果较好,吸附量为15.24 mg/g,吸附率为84.69%,材料重复使用次数不超过5 次时能保持一定的吸附效果;FeMPC对亚甲基蓝的等温吸附符合Langmuir模型,吸附过程符合准二级动力学模型,属于化学吸附.
Abstract
Firstly,the metal-organic framework material MIL-101(Fe)was prepared by hydrother-mal synthesis method,and then the magnetic metal-organic framework material FeMPC was pre-pared by calcining MIL-101(Fe),and was used to adsorb methylene blue in dye wastewater.The materials were characterized by scanning electron microscopy,transmission electron microscopy and infrared spectroscopy,and the effects of the amount of material,oscillation time and pH on the ad-sorption properties of the materials were investigated.The experimental results show that when FeMPC dosage is 25 mg,oscillation time is 70 min,solution pH is 8,FeMPC has a good adsorption effect on methylene blue,the adsorption amount is15.24 mg/g,the adsorption rate is84.69%,and the adsorption effect can be maintained when the material is reused no more than 5 times.The iso-thermal adsorption of methylene blue by FeMPC conforms to the Langmuir adsorption model,and the adsorption process conforms to the quasi-second-order kinetic model,which belongs to chemi-sorption.
关键词
磁性金属有机骨架材料/MIL-101(Fe)/FeMPC/亚甲基蓝/吸附Key words
magnetic metal-organic framework material/MIL-101(Fe)/FeMPC/methylene blue/adsorption引用本文复制引用
基金项目
辽宁省教育厅高等学校基本科研项目(LJKZ0234)
出版年
2024
NETL
NSTL
万方数据