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首页> 外文期刊>Polymers for advanced technologies >Magnetically assisted removal and separation of cationic dyes from aqueous solution by magnetic nanocomposite hydrogels
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Magnetically assisted removal and separation of cationic dyes from aqueous solution by magnetic nanocomposite hydrogels

机译：磁性纳米复合水凝胶通过磁力辅助从水溶液中去除和分离阳离子染料

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摘要

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_3O_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.
机译：制备了磁性聚（丙烯酸-丙烯酰胺-甲基丙烯酸丁酯）（P（AAB））纳米复合水凝胶，并将其用作吸附剂，用于从水溶液中去除和分离阳离子染料。这些磁性P（AAB）纳米复合水凝胶通过扫描电子显微镜（SEM）和振动样品磁强计（VSM）表征。发现这些磁性P（AAB）纳米复合水凝胶具有磁性响应特性。研究了这些磁性纳米复合水凝胶对阳离子染料，结晶紫（CV）和碱性品红色（BM）的动态溶胀，去除和分离。已评估了阳离子染料在磁性P（AAB）纳米复合水凝胶上的吸附容量和等温线研究。含有Fe_3O_4颗粒的磁性P（AAB）纳米复合水凝胶可在磁场中轻松操作，以从水溶液中去除和分离阳离子染料。吸附过程与Langmuir和Freundlich模型非常吻合。

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