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Polyamide nanofiltration membrane with highly uniform sub-nanometre pores for sub-1 Å precision separation

https://doi.org/10.1038/s41467-020-15771-2

Liang, Yuanzhe; Zhu, Yuzhang; Liu, Cheng; Lee, Kueir-Rarn; Hung, Wei-Song; Wang, Zhenyi; Li, Youyong; Elimelech, Menachem; Jin, Jian; Lin, Shihong (December 2020, Nature Communications)

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Microporous polymers with cascaded cavities for controlled transport of small gas molecules

https://doi.org/10.1126/sciadv.abi9062

Seong, Jong Geun; Lee, Won Hee; Lee, Jongmyeong; Lee, So Young; Do, Yu Seong; Bae, Joon Yong; Moon, Sun Ju; Park, Chi Hoon; Jo, Hye Jin; Kim, Ju Sung; et al (October 2021, Science Advances)

In membrane-based separation, molecular size differences relative to membrane pore sizes govern mass flux and separation efficiency. In applications requiring complex molecular differentiation, such as in natural gas processing, cascaded pore size distributions in membranes allow different permeate molecules to be separated without a reduction in throughput. Here, we report the decoration of microporous polymer membrane surfaces with molecular fluorine. Molecular fluorine penetrates through the microporous interface and reacts with rigid polymeric backbones, resulting in membrane micropores with multimodal pore size distributions. The fluorine acts as angstrom-scale apertures that can be controlled for molecular transport. We achieved a highly effective gas separation performance in several industrially relevant hollow-fibrous modular platform with stable responses over 1 year.
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Zwitterionic forward osmosis membrane modified by fast second interfacial polymerization with enhanced antifouling and antimicrobial properties for produced water pretreatment

https://doi.org/10.1016/j.desal.2019.114090

Chiao, Yu-Hsuan; Chen, Shu-Ting; Patra, Tanmoy; Hsu, Chen-Hua; Sengupta, Arijit; Hung, Wei-Song; Huang, Shu-Hsien; Qian, Xianghong; Wickramasinghe, Ranil; Chang, Yung; et al (November 2019, Desalination)

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Tuning the interlayer spacing of forward osmosis membranes based on ultrathin graphene oxide to achieve desired performance

https://doi.org/10.1016/j.carbon.2018.10.058

Hung, Wei-Song; Chiao, Yu-Hsuan; Sengupta, Arijit; Lin, Ya-Wen; Wickramasinghe, S. Ranil; Hu, Chien-Chieh; Tsai, Hui-An; Lee, Kueir-Rarn; Lai, Juin-Yih (February 2019, Carbon)

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