Self-assembly of three-dimensional zeolite imidazolate framework/anionic polyacrylamide network with enhanced hydrophilicity and water dispersibility for highly efficient water purification

被引:8
作者
Hua, Baolv [1 ,2 ]
He, Ziyan [1 ,2 ]
Zheng, Lu [1 ,2 ]
Li, Fengting [1 ,2 ]
机构
[1] Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China
[2] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China
基金
中国国家自然科学基金;
关键词
Metal-organic frameworks; Anionic polyacrylamide; In-situ growth; Pollutant purification; METAL-ORGANIC FRAMEWORKS; IN-SITU GROWTH; HETEROGENEOUS CATALYST; ANION POLYACRYLAMIDE; AQUEOUS-SOLUTION; DEGRADATION; PEROXYMONOSULFATE; ADSORPTION; REMOVAL; ZIF-67;
D O I
10.1016/j.colsurfa.2021.127704
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Metal-organic frameworks (MOFs) have attracted widespread attention in recent years due to their high surface area and adjustable porosity. However, some MOFs such as ZIF-8 have strong hydrophobicity, which is not conducive to the purification of pollutants in water. Herein, we adopted a simple in-situ growth method to incorporate typical MOFs (ZIF-8, ZIF-67) to a low-cost hydrophilic anionic polyacrylamide (APAM) matrix to facilitate the dispersion of MOFs in water. The successful synthesis of ZIFs@APAM were verified by the comprehensive characterization of the synthesized material. The contact angle test proved the hydrophilicity of MOFs@APAM, indicating that MOFs@APAM composite materials were more prone to contact with pollutants in aqueous solutions. To test the potential of this material as a water treatment agent, the ability of ZIF-8 @APAMs to adsorb tetracycline from the water was evaluated, and the adsorption and removal reached 63.80% in 4 h, which had a 25.41% higher removal rate than pure ZIF-8. Also, ZIF-67 @APAM was evaluated to degrade rhodamine B by advanced oxidation in water, and the degradation reached 97.8% in 60 min and it can be looped multiple times.
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页数:10
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