Synthesis of water-dispersible Fe₃O₄@¦Â-cyclodextrin by plasma-induced grafting technique for pollutant treatment

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• 作者：Jie Li ; Changlun Chen ; Ying Zhao ; Jun Hu ; Dadong Shao ; Xiangke Wang
• 关键词：Fe3O4 particles ; ¦Â-Cyclodextrin ; N2 plasma ; 1-Naphthylamine ; Cu(II)
• 刊名：Chemical Engineering Journal
• 出版年：2013
• 出版时间：1 August, 2013
• 年：2013
• 卷：229
• 期：Complete
• 页码：296-303
• 全文大小：868 K

文摘

A novel methodology for the synthesis of the water-dispersible Fe₃O₄ particles modified by ¦Â-cyclodextrin (denoted as Fe₃O₄@¦Â-CD) was proposed using N₂ plasma-induced grafting technique. The Fe₃O₄@¦Â-CD composites were applied in the removal of inorganic and organic pollutants from aqueous solutions. The characteristic results of Fourier transform infrared spectroscopy and thermogravimetric analysis showed that ¦Â-CD was grafted onto Fe₃O₄ particles. The grafted ¦Â-CD on Fe₃O₄ particles contributed to an enhancement of the adsorption capacity because of the strong abilities of the multiple hydroxyl groups and the inner cores of the hydrophobic cavity in ¦Â-CD to form complexes with metal ions and organic pollutants. The Fe₃O₄@¦Â-CD composites had good dispersion in water and could be separated from solution by magnetic separation. The adsorption of 1-naphthylamine on the Fe₃O₄@¦Â-CD composites was dependent on pH and ionic strength. The results indicate that the Fe₃O₄@¦Â-CD composites are the promising material for the separation and preconcentration of inorganic and organic pollutants from aqueous solutions in environmental pollution cleanup.