磁性Co/C纳米复合材料的合成及其对水中刚果红吸附性能研究

doi:10.3866/PKU.DXHX201911005

Abstract

Abstract:

This comprehensive experiment has successfully introduced the frontier of scientific research into undergraduate laboratory teaching. A magnetic Co/C nanocomposite was synthesized by using ZIF-67 as the precursor. Upon calcination at high temperature in inert atmosphere, ZIF-67 was degraded and carbonized to form Co/C nanocomposite. The adsorption performance of Co/C nanocomposite for Congo Red was investigated in detail. The structure and composition of the nanocomposite were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The concentration of Congo Red was determined by UV-Vis spectrophotometry. The kinetics data was fitted with the pseudo-first-order and pseudo-second-order kinetic models. The adsorption isotherms were analyzed according to Langmuir and Freundlich isotherm models. This experiment covers the synthesis of inorganic-organic hybrid material, characterization of materials, concentration determination of dyes, analysis of dynamics data and adsorption isotherms. Therefore, this experiment enables students to practice their experimental skills, increase their interest in scientific research, and broaden their professional knowledge.

Key words: MOFs, Magnetic nanocomposite, Congo Red, Adsorption, Organic contaminants

MSC2000:

Dandan Cai, Changping Ruan, Jianhua Qiu, Liyun Wu, Cong Zhang, Yuzhen Zhang. Synthesis of Magnetic Co/C Nanocomposite and Its Adsorption Performance for Congo Red in Aqueous Systems[J].University Chemistry, 2020, 35(12): 212-220.

Figures/Tables 15

References 9

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吸附剂	最大吸附量/(mg?g^?1)	参考文献
纤维素气凝胶	163.8	[3]
虾壳甲壳素	139.00	[4]
甲壳素微球	112.36	[5]
改良性叶渣	106.40	[6]
Fe₃O₄/MnO₂复合纳米材料	103.10	[7]
壳聚糖	92.59	[8]
Co/C磁性纳米复合材料	326.8	本实验

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Synthesis of Magnetic Co/C Nanocomposite and Its Adsorption Performance for Congo Red in Aqueous Systems

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