结晶紫
纳米复合材料
吸附
蒙脱石
过硫酸铵
阳离子聚合
朗缪尔吸附模型
朗缪尔
材料科学
核化学
化学工程
单体
弗伦德利希方程
化学
高分子化学
聚合物
复合材料
有机化学
医学
病理
工程类
作者
Gholam Reza Mahdavinia,Huriyeh Aghaie,Hossein Sheykhloie,Mohammad Taghi Vardini,Hossein Etemadi
标识
DOI:10.1016/j.carbpol.2013.05.096
摘要
CarAlg/MMt nanocomposite hydrogels composed of kappa-carrageenan (Car) and sodium alginate (Alg) biopolymers were synthesized by incorporation of sodium montmorillonite (Na-MMt) nanoclay. Acrylamide (AAm), methylenebisacrylamide (MBA), and ammonium persulfate (APS) were used as monomer, crosslinker, and initiator, respectively. The structure and morphology of nanocomposites were characterized by XRD, SEM, and TEM techniques. The XRD results showed exfoliated MMt nanoclay and exfoliation of MMt was confirmed by TEM graph. The resulting nanocomposites were evaluated to remove cationic crystal violet (CV) dye from water. According to data, the adsorption capacity of nanocomposites was enhanced as the clay content was increased. The experimental data were analyzed according to both Langmuir and Freundlich models and experimental maximum adsorption capacity was obtained 88.8 mg g(-1). By studying the effect of pH on the dye adsorption capacity of nanocomposites, it was revealed that the adsorption capacity of nanocomposites was enhanced at acidic pHs as the Na-MMt nanoclay and kappa-carrageenan components were increased.
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