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Interfacial synthesis ZIF-8@HPAN membrane for highly efficient humic acid removal

Yingzi Lin, Yi Liu, Ruijun Ren, Feng Xiao, and Dongsheng Wang

School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun, China



Received: 31 October 2021  Accepted: 14 February 2022


In this study, a ZIF-8 thin layer deposited on the surface of a hydrolyzed polyacrylonitrile (HPAN) membrane was used for highly efficient humic acid removal. The thin ZIF-8 layer was synthesized by using a two-step interfacial synthesis method, based on liquid–liquid interfacial coordination polymerization. The formation of a continuous ZIF-8 layers was confirmed by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and atomic force microscopy. The effects of the synthesis conditions including reaction time, precursor concentration, and other operating conditions on the ZIF-8 composite membrane performance were studied using humic acid solution as organic waste. The results showed when the reaction time was extended, or when the precursor concentration was increased, the ZIF-8 layer deposited on the membrane surface became denser. Compared with the unmodified HPAN substrate, the composite membrane deposited with the ZIF-8 layer showed better processing ability for organic matters due to the strong electrostatic interaction of organic matter with the ZIF-8@HPAN membrane and the ZIF-8 particles unique structural characteristics, which shows a great application prospect for humic acid treatment compared with other membrane technologies.

Keywords: Interfacial synthesis; ZIF-8; Synthesis conditions; Humic acid; Membrane performance

Full paper is available at

DOI: 10.1007/s11696-022-02138-8


Chemical Papers 76 (7) 4405–4418 (2022)

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