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Fast and Efficient Immobilization Behavior of Bifunctional Magnetic Nano-Amendment Against Multi-heavy Metal
Author NameAffiliationE-mail
LIANG Jing Engineering Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004, China
School of Pharmacy, Henan University, Kaifeng, Henan 475004, China 
 
HAN Lu Engineering Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004, China
School of Pharmacy, Henan University, Kaifeng, Henan 475004, China 
 
LI Bao Engineering Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004, China
College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China 
 
SHI Zhen-Zhu Engineering Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004, China
College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China 
 
LIU Xing-Chi Engineering Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004, China
College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China 
 
PENG Li-Chao Engineering Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004, China
Collaborative Innovation Center of Nano Functional Materials and Applications of Henan Province, Henan University, Kaifeng, Henan 475004, China 
plc@henu.edu.cn 
ZOU Xue-Yan Engineering Research Center for Nanomaterials, Henan University, Kaifeng, Henan 475004, China
State Key Laboratory of Cotton Biology, Henan University, Kaifeng, Henan 475004, China
Collaborative Innovation Center of Nano Functional Materials and Applications of Henan Province, Henan University, Kaifeng, Henan 475004, China 
zouxueyan@henu.edu.cn 
Abstract: Ferroferric oxide/L-cysteine (Fe3O4/Cys) magnetic nanospheres were synthesized by one pot method. Subsequently, the obtained Fe3O4/Cys were further modified by conjugating iminodiacetic acid (IDA) to obtain Fe3O4/Cys/IDA nanospheres. It was indicated that L-Cys was grafted on the surface of Fe3O4 by -SH group and Fe3O4/Cys/IDA, with more branched chains and more -COOH groups, was obtained by amido bond formed by the -NH2 group of Fe3O4/Cys and the -COOH group of IDA. Due to the alternative short and long chains grafting, Fe3O4/Cys/IDA nanospheres displayed high density modification of -COOH groups. Meanwhile, we found that the adsorption of Pb2+, Cd2+, Cu2+, Co2+, Ni2+, Zn2+ ions by Fe3O4/Cys/IDA nanospheres were specific adsorption and that of Hg2+ ions was unspecific adsorption. And all the complexes (Fe3O4/Cys/IDA-M, M was the metal) obtained after immobilization exhibited good stability. Experimental equilibrium data were also analyzed by the Langmuir and Freundlich models, and the best fit was obtained with the Langmuir isotherm equation, which was monolayer homogeneous adsorption. The kinetic study indicated that the adsorption kinetic data was well described by the pseudo-second kinetic model and the maximum immobilization capacity was 49.05 mg·g-1, which was a fast and efficient heavy metal immoblization material.
Keywords: Fe3O4  polycarboxylic  heavy metal  graft mechanism  kinetic  thermodynamic
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LIANG Jing,HAN Lu,LI Bao,SHI Zhen-Zhu,LIU Xing-Chi,PENG Li-Chao,ZOU Xue-Yan.Fast and Efficient Immobilization Behavior of Bifunctional Magnetic Nano-Amendment Against Multi-heavy Metal[J].Chinese Journal of Inorganic Chemistry,2021,37(11):1981-1990.
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Chinese Journal of Inorganic Chemistry