化工进展Issue(4)：1115-1121,7.DOI:10.16085/j.issn.1000-6613.2015.04.037
坡缕石/聚乙二醇/丙烯酸水凝胶的表征及其对阳离子染料的吸附性能
Characterization of palygorskite/poly(ethylene glycol)/acrylic acid hydrogel and its application as an adsorbent for cationic dyes
摘要
Abstract
The structure and morphology of palygorskite/poly(ethylene glycol)/acrylic acid (PGS/PEG/AA) hydrogel produced by glow discharge electrolysis plasma were characterized by FT-IR,XRD and SEM. The adsorption behaviors of hydrogel for cationic dyes,such as methylene blue,crystal violet,Malachite green and Rhodamine B,were investigated. Factors influencing the adsorption of cationic dyes,such as solution pH,contact time,were investigated. In addition,the adsorption mechanism was also discussed. The results showed that PEG and AA had successfully grafted to PGS. The hydrogel possessed a better interface compatibility and exhibited undulant,rough and porous surface. The best parameters for the removal of dyes were pH 6.2 and the equilibrium contact time 3h. The adsorption process followed a pseudo-second-order kinetic model. The dyes adsorption on PGS/PEG/AA hydrogel was a complex physical-chemical process due to ion-exchange, hydrogen bonding and van der Waals.关键词
坡缕石(PGS)/水凝胶/吸附/阳离子染料Key words
palygorskite/hydrogel/adsorption/cationic dyes分类
化学化工引用本文复制引用
俞洁,张海涛,陆泉芳,丁雪娥,柳淑娟,李芸..坡缕石/聚乙二醇/丙烯酸水凝胶的表征及其对阳离子染料的吸附性能[J].化工进展,2015,(4):1115-1121,7.基金项目
国家自然科学基金（21367023）、甘肃省自然科学基金（1208RJZA16、1308RJZA144）、甘肃省高等学校科研项目（2013A-019）及西北师范大学青年教师科研能力提升计划（NWNU-LKQN-12-9、NWNU-LKQN-10-16）项目。 （）
