吸附
咪唑酯
沸石咪唑盐骨架
染色
朗缪尔吸附模型
化学工程
水溶液
羊毛
化学
位阻效应
废水
材料科学
复合材料
有机化学
废物管理
金属有机骨架
工程类
作者
Xiran Qiao,Wenchao Gao,Xiuming Liu,Kuanjun Fang,Qiujin Li,Xue Lu,Junjie Si,Min Zhang,Dongdong Liu
标识
DOI:10.1016/j.jenvman.2022.115972
摘要
Zeolitic imidazolate framework-67 (ZIF-67) formed by Co2+ and 2-methylimidazole (MIM) is widely used for adsorption and separation of pollutants. However, there are some disadvantages for ZIF-67 powder, such as strong electrostatic interaction and difficulty in recovery from the liquid phase. The available way to solve the above problems is choosing a suitable substrate to load ZIF-67. The amino and hydroxyl of wool fabrics effectively capture and fix ZIF-67, making it easy to separate ZIF-67 by taking out the composite materials from aqueous solution. In this study, ZIF-67/Wool fabric (ZW) was successfully prepared. The results show that ZIF-67 has better adsorption performance for reactive dyes with more sulfonic groups, higher molecular weight and lower steric resistance. The equilibrium adsorption capacity of ZW for reactive red 195 was 4.15 mg g-1. The adsorption accorded with pseudo-second-order kinetic model and Langmuir isotherm. This study improved the application of ZIF-67, which provided a treatment method for dyeing wastewater and made it possible to recycle waste wool.
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