期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 321, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2022.115972
关键词
ZIF-67; Wool fabric; Reactive dye; Adsorption
资金
- National Key Research and Development Program of China [2017YFB0309800]
- Key Technology Research and Development Program of Shandong Province [2019TSLH0108]
- State Key Laboratory of Bio-Fibers and Eco-Textiles [KF2020207]
In this study, ZIF-67/wool fabric composite material was successfully prepared and showed good adsorption performance for reactive dyes. The amino and hydroxyl of the wool fabric effectively captured and fixed ZIF-67, making it easy to separate from the aqueous solution.
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 effec-tively 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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