化工进展2024，Vol.43Issue(8)：4542-4549,8.DOI:10.16085/j.issn.1000-6613.2023-1138
氨基三乙酸酐改性多孔双网络水凝胶的制备及吸附性能
Preparation and adsorption properties of porous double-network hydrogels modified by nitrilotriacetic acid anhydride
摘要
Abstract
Nitrilotriacetic acid anhydride modified polyacrylamide/chitosan double network hydrogel was designed and synthesized,which had good mechanical properties,adsorption properties and a faster adsorption rate.The addition of sodium dodecyl sulfate was helpful to construct a porous structure of hydrogel,and the mechanical strength,swelling resistance and adsorption properties of hydrogel were enhanced by the use of nitrilotriacetic acid anhydride as crosslinking agent and modifier.Taking CrCl3 as the model pollutant,the adsorption performance of CrCl3 was investigated.The results showed that Langmuir isothermal adsorption model and pseudo-second-order kinetic model were more suitable for fitting the adsorption data of Cr3+on hydrogels,indicating that the modified hydrogels had non-uniform surfaces and different binding sites.The maximum adsorption capacity of the modified hydrogel for Cr3+was 570.6mg/g,and the adsorption effect was the best when pH was 4.After 5 sorption-desorption cycles,the removal rate of Cr3+was 83.3%.The design of modified double network hydrogels provided good performance and development potential for the adsorption of heavy metal ions in wastewater.关键词
氨基三乙酸酐/双网络/水凝胶/吸附/改性Key words
nitrilotriacetic acid anhydride/double network/hydrogel/adsorption/modification分类
通用工业技术引用本文复制引用
郑云香,高艺伦,李宴汝,刘青霖,张浩腾,王向鹏..氨基三乙酸酐改性多孔双网络水凝胶的制备及吸附性能[J].化工进展,2024,43(8):4542-4549,8.基金项目
东营市科学发展基金(DJ2021021,DJ2021018) （DJ2021021,DJ2021018）
山东石油化工学院教学研究项目(JGYB202219). （JGYB202219）
