Citation: SUN Yi-Ming, LI Dong-Yun, SUN Yu-Kun, XU Yang, SHEN Ya-Qiang, GE Hong-Liang. Effect of Dopamine Dosages on the Microstructure and Adsorption Properties of the Fe₃O₄@PDA@PAMAM Magnetic Nano-adsorbed Materials[J]. Chinese Journal of Inorganic Chemistry, ;2020, 36(2): 283-288. doi: 10.11862/CJIC.2020.025 shu

Effect of Dopamine Dosages on the Microstructure and Adsorption Properties of the Fe₃O₄@PDA@PAMAM Magnetic Nano-adsorbed Materials

1.
College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, China
2.
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding author: LI Dong-Yun, lidongyun@cjlu.edu.cn
Received Date: 30 July 2019
Revised Date: 12 November 2019

Figures(7)

A series of the Fe₃O₄@PDA@PAMAM magnetic nano-adsorbed materials with different dopamine (DA) dosages were prepared by using self-made Fe₃O₄ as magnetic core materials and DA as surface modifier, then grafting with 2.0 G polyamide-amine (PAMAM) macromolecule. The composition, microstructure, magnetic properties and adsorption properties of heavy metal Cd(Ⅱ) ions were studied by X-ray diffractometer (XRD), infrared spectrometer (IR), vibrating sample magnetometer (VSM), transmission electron microscope (TEM) and inductively coupled plasma emission spectrometer (ICP-OES). The effect of DA dosages on the phase composition, microstructure, magnetic properties and adsorption properties of Fe₃O₄@PDA@PAMAM magnetic nano-adsorbed materials were researched as well. The results showed that Fe₃O₄@PDA@PAMAM magnetic nano-adsorbed materials were typical core-shell structure while the thickness of the shell increased with the increase of DA dosages, and the crystal forms of the materials all showed spinel structure. The saturation magnetization (M_s) of Fe₃O₄@PDA@PAMAM with different DA dosages decreased with the increase of DA dosages, which was smaller than that of Fe₃O₄. As the coercivity (H_c) and residual magnetization (M_r) of the materials were lower, the magnetic response characteristics of magnetic nano-adsorbed materials showed good recycling performance. The equilibrium adsorption capacity of Fe₃O₄@PDA@PAMAM magnetic nano-adsorbed materials for Cd(Ⅱ) ions increased firstly and then decreased with the increase of DA dosages. When the mass radio of Fe₃O₄ and DA was 8:4, the adsorption capacity of the prepared materials for Cd(Ⅱ) ions has a maximum of 165.13 mg·g^-1.
- dopamine,
- PAMAM dendrimers macromolecule,
- magnetic properties,
- core-shell structure,
- adsorption
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沈阳化工大学材料科学与工程学院沈阳 110142

Effect of Dopamine Dosages on the Microstructure and Adsorption Properties of the Fe3O4@PDA@PAMAM Magnetic Nano-adsorbed Materials

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通讯作者: 陈斌, bchen63@163.com

Effect of Dopamine Dosages on the Microstructure and Adsorption Properties of the Fe₃O₄@PDA@PAMAM Magnetic Nano-adsorbed Materials