摘要
用自制的磁性Fe_(3)O_(4)对β-环糊精进行改性,制备了β-环糊精磁性复合微球(β-CDM),并对β-CDM的形貌、结构进行表征,研究其对Cr^(6+)的吸附行为。结果表明:β-CDM外观圆整,表面稍粗糙,具有网状结构;Langmuir等温吸附方程和准二级动力学方程对吸附过程拟合度较高,吸附过程为单分子层有利吸附,既包含物理吸附,也包含化学吸附;β-CDM重复利用5次后,解吸率和吸附率均有所下降,但基本满足重金属废水处理的要求。
β-cyclodextrin magnetic composite microspheres(β-CDM)were prepared by modified β-cyclodextrin that was modified with self-made magnetic Fe_(3)O_(4).The morphology and structure of β-CDM were characterized,and discussed the adsorption behavior of Cr^(6+).The results showed thatβ-CDM was round and rough with reticular structure.The Langmuir equation and pseudo-second-order kinetic model could highly fit the adsorption process,and the adsorption was monolayer and favorable including physical and chemical adsorption.Although adsorption and desorption rate of β-CDM slightly decrease with β-CDM reused five times,the adsorption of β-CDM was basically statisfied with the requirements of heavy metal waste water treatment.
作者
赵阳
张永明
贺泽民
郭准
苗宗成
赵玉真
Zhao Yang;Zhang Yongming;He Zemin;Guo Zhun;Miao Zongcheng;Zhao Yuzhen(Xi'an Key Laboratory of Advanced Photo-Electronics Materials and Energy Conversion Device,School of Science,Xijing University,Xi'an 710123)
出处
《化工新型材料》
CAS
CSCD
北大核心
2022年第4期303-306,共4页
New Chemical Materials
基金
国家自然科学基金(51673157)
陕西省教育厅科研计划项目(20JK0959)。
关键词
Β-环糊精
微球
吸附
热力学
动力学
β-CD
microsphere
adsorption
dynamics thermodynamics
