Zhang Mengen, Xi Qiyang, Wang Linlin, Xie Qinxing, Li Zhenhuan, Zhang Maliang
State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, PR China; School of Material Science and Engineering, Tiangong University, Tianjin, 300387, PR China.
State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, PR China; School of Material Science and Engineering, Tiangong University, Tianjin, 300387, PR China.
J Environ Manage. 2025 Jan;373:123717. doi: 10.1016/j.jenvman.2024.123717. Epub 2024 Dec 16.
The heat and corrosion resistance of traditional membranes is inadequate, thus making them inadequate for the separation/filtration needs of harsh environments. Polyphenylene sulfide(PPS) can be used to develop new-generation membrane materials, but PPS has problems such as hydrophobicity and UV resistance. This article proposes a PPS membrane for efficient separation/filtration under extreme conditions, which uses melt-blown PPS non-woven fabric and undergoes oxidation and nitrification modification. Combining the advantages of metal-organic framework material (ZIF-67), a hollow ZIF-67/PPS non-woven fabric membrane has been successfully prepared, solving PPS's hydrophobic and UV-resistant problems. It is ideal for wastewater treatment and air filtration in harsh environments yet retains hydrophilicity even in intense alkaline and high-temperature conditions. The hollow ZIF-67/PPS membrane exhibits a very high pure water flux (34,261 L m h). Surprisingly, the ZIF-67/PPS membrane exhibits strong chemical/thermal performance, maintaining good separation/filtration performance even after multiple cyclic tests in extreme conditions. The ZIF-67/PPS membrane with large-scale production capacity has reasonable prospects of dealing with environmental problems under extreme conditions.
