PEDOT:PSS Nanoparticle Membranes for Organic Solvent Nanofiltration.

Autor: Zhang JC; Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China., Lv TR; Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China., Yin MJ; Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China., Ji YL; Center for Membrane and Water Science & Technology, Zhejiang University of Technology, Hangzhou, 310014, China., Jin CG; Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China., Chen BH; Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China., An QF; Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Dec; Vol. 20 (52), pp. e2405285. Date of Electronic Publication: 2024 Oct 17.
DOI: 10.1002/smll.202405285
Abstrakt: Recycling of valuable solutes and recovery of organic solvents via organic solvent nanofiltration (OSN) are important for sustainable development. However, the trade-off between solvent permeability and solute rejection hampers the application of OSN membranes. To address this issue, the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) nanoparticle membrane with hierarchical pores is constructed for OSN via vacuum filtration. The small pores (the free volume of the polymer chain) charge for the solute rejection (high rejection efficiency for low molecule weight solute) and allow solvent passing while the large pores (the void between two PEDOT:PSS nanoparticles) promote the solvent transport. Owing to the lack of connectivity among the large pores, the fabricated PEDOT:PSS nanoparticle membrane enhanced solvent permeance while maintaining a high solute rejection efficiency. The optimized PEDOT:PSS membrane affords a MeOH permeance of 7.2 L m -2 h -1 bar -1 with over 90% rejection of organic dyes, food additives, and photocatalysts. Moreover, the rigidity of PEDOT endows the membrane with distinctive stability under high-pressure conditions. The membrane is used to recycle the valuable catalysts in a methanol solution for 150 h, maintaining good separation performance. Considering its high separation performance and stability, the proposed PEDOT:PSS membrane has great potential for industrial applications.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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