文献类型：期刊文献

英文题名：Preparation of a poly(acrylic acid) based hydrogel with fast adsorption rate and high adsorption capacity for the removal of cationic dyes

作者：Yuan, Zhenyu[1];Wang, Jie[1];Wang, Yiming[2];Liu, Qian[2];Zhong, Yujie[1];Wang, Yu[1];Li, Li[1];Lincoln, Stephen F.[3];Guo, Xuhong[1,4]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Delft Univ Technol, Dept Chem Engn, NL-2629 HZ Delft, Netherlands;[3]Univ Adelaide, Sch Phys Sci, Adelaide, SA 5005, Australia;[4]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bingtuan, Xinjiang 832000, Peoples R China

年份：2019

卷号：9

期号：37

起止页码：21075

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20192907207665);WOS:【SCI-EXPANDED(收录号:WOS:000475483100001)】；

基金：This work was supported by the NSFC Grants (51761135128, 51403062, and 51773061) and Key Scientific and Technological Project of Xinjiang Bingtuan (2018AB025), China Scholarship Council (CSC).

语种：英文

外文关键词：Adsorption - Dyes - Efficiency - Biocompatibility - Water treatment - Carboxylic acids - Acrylic monomers - Aromatic compounds - Stripping (dyes)

摘要：A biocompatible Dex-MA/PAA hydrogel was prepared through copolymerization of glycidyl methacrylate substituted dextran (Dex-MA) with acrylic acid (AA), which was applied as the adsorbent to remove cationic dyes from aqueous solutions. Dex-MA/PAA hydrogel presented a fast adsorption rate and the removal efficiency of Methylene Blue (MB) and Crystal Violet (CV) reached 93.9% and 86.4%, respectively within one minute at an initial concentration of 50 mg L-1. The adsorption equilibrium data fitted the Sips isotherm model well with high adsorption capacities of 1994 mg g(-1) for MB and 2390 mg g(-1) for CV. Besides, dye adsorption occurred efficiently over the pH range 3-10 and the temperature range 20-60 degrees C. Moreover, the removal efficiencies for MB and CV were still >95% even after five adsorption/desorption cycles which indicates the robust nature of the Dex-MA/PAA hydrogel and its potential as an eco-friendly adsorbent for water treatment.