Citation: LI Jian-Jun, BAO Xu, WU Xian-Feng, Islam Nazrul, LIU Yin, QIAO Shang-Yuan, YU Zhen-Wei, ZHU Jin-Bo. Magnetic Chitosan Micron Spheres: Synthesis and Adsorption Property for Cu²⁺[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(3): 383-388. doi: 10.11862/CJIC.2017.052 shu

Magnetic Chitosan Micron Spheres: Synthesis and Adsorption Property for Cu²⁺

LI Jian-Jun ^1,2,*,, ,
BAO Xu ¹ ,
WU Xian-Feng ¹ ,
Islam Nazrul ² ,
LIU Yin ¹ ,
QIAO Shang-Yuan ¹ ,
YU Zhen-Wei ² ,
ZHU Jin-Bo ¹

1.
Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
2.
Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong NSW 2500, Australia

Corresponding author: LI Jian-Jun, ljjhero4@gmail.com
Received Date: 8 November 2016
Revised Date: 15 December 2016

Figures(9)

MS@SiO₂@CS magnetic micron spheres were fabricated by successively coating the ball-milled coal fly ash magneticsphere (MS) particles with SiO₂ and chitosan (CS) through a sol-gel and an inverse microemulsion method, respectively. The structures and properties were carefully characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and vibrating sample magnetometer (VSM). The results showed that the MS particles were coated layer by layer of SiO₂ and CS, respectively, and relative evenly distributed in the CS substrate. Since MSs are magnetic, the MS@SiO₂@CS samples also show relatively strong magnetism with a specific saturation magnetization of 7.04 emu·g^-1. Adsorption experiments indicated that the magnetic composite micronspheres showed the good adsorption capability for Cu²⁺ ions, and the adsorption capacity was up to 11.08 mg·g^-1. In addition, after Cu²⁺ adsorption, the adsorbents could be separated effectively from water by magnetic separation. According to the adsorption kinetics simulation, the Cu²⁺ adsorption of MS@SiO₂@CS corresponds to pseudo second order kinetics, which implies a dominant chemical adsorption.
- fly ash magneticspheres,
- magnetic chitosan,
- adsorption,
- heavy metal ions,
- magnetic separation
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沈阳化工大学材料科学与工程学院沈阳 110142

Magnetic Chitosan Micron Spheres: Synthesis and Adsorption Property for Cu2+

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通讯作者: 陈斌, bchen63@163.com

Magnetic Chitosan Micron Spheres: Synthesis and Adsorption Property for Cu²⁺