Magnetically assisted removal and separation of cationic dyes from aqueous solution by magnetic nanocomposite hydrogels

作者：Li Shengfang^*; Liu Xianli; Huang Weidong; Li Wen; Xia Xianyou; Yan Shilin; Yu Jianying

来源：Polymers for Advanced Technologies, 2011, 22(12): 2439-2447.

DOI：10.1002/pat.1782

• magnetic hydrogel
• cationic dye
• swelling
• adsorption
• separation

Magnetic poly(acrylic acid-acrylamide-butyl methacrylate) (P(AAB)) nanocomposite hydrogels were prepared and used as adsorbents for removal and separation of cationic dyes from aqueous solution. These magnetic P(AAB) nanocomposite hydrogels were characterized by scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM). It was found that these magnetic P(AAB) nanocomposite hydrogels had magnetic responsive characters. The dynamic swelling, removal, and separation of cationic dye, crystal violet (CV), and basic magenta (BM) by these magnetic nanocomposite hydrogels were studied. The adsorption capacity and isotherm studies of cationic dyes onto magnetic P(AAB) nanocomposite hydrogels have been evaluated. The magnetic P(AAB) nanocomposite hydrogels containing Fe(3)O(4) particles can be easily manipulated in magnetic field for removal and separation of cationic dyes from aqueous solution. Adsorption process agreed very well with the Langmuir and Freundlich models.

• 出版日期2011-12
• 单位武汉理工大学; 湖北理工学院