Preparation of Zn2+ions imprinted Fe3 O4-CTS nanoparticles and the research in Zn2+adsorption properties
CHEN Zhi-jun
HAO Ying
YANG Qing-xiang
ZHANG Xiang
QI Lian-huai
TANG Kai
ZHU Hai-yan
WANG Dan
Abstract：Fe3 O4-chitosan (CTS)imprinted nanoparticles were prepared by one-step coprecipitation using Zn2+as template and glutaraldehyde as a crosslinking agent.The nanoparticles were characterized by X-ray diffraction (XRD),Fourier transform infrared spectroscopy (FTIR)and thermo gravimetric analysis (TG) respectively.The effect of pH,initial concentration of Zn2+and temperature on adsorption of Zn2+was also studied by atom adsorption spectroscopy (AAS)and finally the adsorption of various heavy metal ions was discussed.The results showed that the nanaoparticles were successfully covered with chitosan,and their original spinel structure hadn’t changed.The amount of chitosan was about 10.2%(wt).The suitable pH was 6.When the initial concentration of Zn2+was 200 mg/L,the adsorption capacity reached its maximum value which was about 28.9 mg/g.Decreasing temperature benefited the adsorption process and the nanop-articles showed selective adsorption of zinc ions.
Keywords：Zn2+Fe3 O4chitosanimprinted nanoparticlesselective adsorption
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 74-78 )