Oily wastewater discharged by industrial development is an important factor causing water pollution. Membrane separation technology has the advantages of low cost, simple operation, and high efficiency in the treatment of oily wastewater. However, membrane materials are easily eroded by microorganisms during long-term storage or use, thereby resulting in reduced separation efficiency. Herein, a zeolite imidazole skeleton-8@silver nanocluster composite polyacrylonitrile (ZIF-8@AgNCs/PAN) nanofibrous membrane was fabricated by electrospinning and in situ growth technology. The surface chemistry, morphology, and wettability of the composite membranes were characterized. The carboxyl groups on the surface of hydrolyzed PAN nanofibers, which can be complexed with zinc ions (Zn2+), are utilized as growth sites for porous metal organic frameworks (ZIF-8). Meanwhile, AgNCs are loaded into ZIF-8 to achieve stable hybridization of ZIF-8@AgNCs and nanofibers. The loading quantity of ZIF-8@AgNCs, which can dominantly affect the surface roughness and the porosity of the membranes, is regulated by the feeding amount of AgNCs. The ZIF-8@AgNCs/PAN membrane achieves effective oil-water separation with high separation efficiency toward petroleum ether-in-water emulsion (98.6%) and permeability (62 456 ± 1343 Lm−2 h−1 bar−1). Furthermore, the ZIF-8@AgNCs/PAN membrane possesses high antibacterial activity against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus), which is beneficial for the long-term storage and use of the membrane.
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March 2023
Research Article|
April 25 2023
Polyacrylonitrile nanofibrous membrane composited with zeolite imidazole skeleton-8 and silver nanoclusters for efficient antibacterial and emulsion separation
Special Collection:
Special Topic Collection: Biointerface Science in China
Huaxiang Chen
;
Huaxiang Chen
(Investigation, Writing – original draft)
1
MOE Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Zhejiang Sci-Tech University
, Hangzhou 310018, China
2
Zhejiang Provincial Engineering Research Center for Green and Low-Carbon Dyeing & Finishing, Zhejiang Sci-Tech University
, Hangzhou 310018, China
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Hao Zhou;
Hao Zhou
(Methodology, Writing – original draft)
3
Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province
, Lishui 323000, China
4
NICE Group Co. Ltd.
, Lishui 323000, China
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Mingchao Chen;
Mingchao Chen
(Validation)
1
MOE Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Zhejiang Sci-Tech University
, Hangzhou 310018, China
2
Zhejiang Provincial Engineering Research Center for Green and Low-Carbon Dyeing & Finishing, Zhejiang Sci-Tech University
, Hangzhou 310018, China
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Yan Quan;
Yan Quan
(Data curation)
3
Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province
, Lishui 323000, China
4
NICE Group Co. Ltd.
, Lishui 323000, China
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Chenglong Wang;
Chenglong Wang
(Data curation, Validation)
1
MOE Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Zhejiang Sci-Tech University
, Hangzhou 310018, China
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Yujie Gao;
Yujie Gao
(Writing – review & editing)
1
MOE Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Zhejiang Sci-Tech University
, Hangzhou 310018, China
2
Zhejiang Provincial Engineering Research Center for Green and Low-Carbon Dyeing & Finishing, Zhejiang Sci-Tech University
, Hangzhou 310018, China
3
Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province
, Lishui 323000, China
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Jindan Wu
Jindan Wu
a)
(Conceptualization, Supervision, Writing – review & editing)
1
MOE Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Zhejiang Sci-Tech University
, Hangzhou 310018, China
2
Zhejiang Provincial Engineering Research Center for Green and Low-Carbon Dyeing & Finishing, Zhejiang Sci-Tech University
, Hangzhou 310018, China
3
Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province
, Lishui 323000, China
a)Author to whom correspondence should be addressed: wujindan@zstu.edu.cn
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a)Author to whom correspondence should be addressed: wujindan@zstu.edu.cn
Note: This paper is part of the Biointerphases Special Topic Collection on Biointerface Science in China.
Biointerphases 18, 021006 (2023)
Article history
Received:
February 26 2023
Accepted:
March 15 2023
Citation
Huaxiang Chen, Hao Zhou, Mingchao Chen, Yan Quan, Chenglong Wang, Yujie Gao, Jindan Wu; Polyacrylonitrile nanofibrous membrane composited with zeolite imidazole skeleton-8 and silver nanoclusters for efficient antibacterial and emulsion separation. Biointerphases 1 March 2023; 18 (2): 021006. https://doi.org/10.1116/6.0002615
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