Surface-functionalized PVDF membranes by facile synthetic Cu-MOF-74 for enhanced contaminant degradation and antifouling performance

被引：43

作者：

Zheng, Hongai ^{[1
]}

Zhou, Yao ^{[1
]}

Wang, Derui ^{[1
]}

Zhu, Meilin ^{[1
]}

Sun, Xin ^{[1
]}

Jiang, Shuangyan ^{[1
]}

Fan, Yankun ^{[1
]}

Zhang, Daquan ^{[1
]}

Zhang, Lizhi ^{[2
]}

机构：

[1] Shanghai Univ Elect Power, Coll Environm & Chem Engn, Shanghai 200090, Peoples R China

[2] Tongji Univ, Dept Orthopaed Surg, Shanghai Yangpu Dist Cent Hosp, Yangpu Hosp, 450 Tengyue Rd, Shanghai 200090, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2022年 / 651卷

基金：

中国国家自然科学基金;

关键词：

Cu-MOF-74; Catalytic membrane; Antifouling; Degradation; METAL-ORGANIC FRAMEWORK; GRAPHENE OXIDE; ACTIVATION; PEROXYMONOSULFATE; NANOPARTICLES; PERSULFATE; GENERATION; CATALYSIS; REMOVAL; BIOCHAR;

D O I：

10.1016/j.colsurfa.2022.129640

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：

Catalytic membrane reactors (CMR) based on the sulfate-based advanced oxidation processes (SR-AOPs) have exhibited fantastic applications prospects in water treatment. We synthesized Cu-MOF-74 by an environmentally friendly and facile method, then used it as PVDF (polyvinylidene fluoride) membrane surface modification layer. The results presented that Cu-MOF-74 can significantly improve anti-fouling ability of PVDF membrane (60.9% and 64.1% anti-adsorption of dye and protein). The modified membranes exhibited relatively low flux loss. Simultaneously the modified membrane catalyzed peroxymonosulfate (PMS) to achieve 97.1% degradation efficiency of Rhodamine B (RhB) within 60 min and 90.2% dye penetration recovery within 30 min. Cu-MOF-74 exhibited greater catalytic activity than homogeneous Cu (II) and showed a wide range of pH adaptation. Finally, XPS and ESR proved that it was the redox of Cu (II)/Cu (I) in the Cu-MOF-74 structure making PMS mainly produce SO4-center dot and center dot OH to oxidize pollutant molecules. The modus proposed in this study may provide a more promising strategy for the preparation of high-efficiency catalytic membranes and their practical applications in wastewater treatment processes.

引用

页数：12

共 64 条

[1] Efficient production of polymer-grade propylene from the propane/ propylene binary mixture using Cu-MOF-74 framework [J].