Zif-8 Channelled and Coordination-Bridging Two-Dimensional Ws2 Membrane for Efficient Organic Solvent Nanofiltration

31 Pages Posted: 18 Feb 2022

See all articles by Shao-Chun Wu

Shao-Chun Wu

Shanghai Normal University

Yan Chen

Shanghai Normal University

Xi Yan

Shanghai Normal University

Xiao-Jing Guo

Shanghai Normal University

Wan-Zhong Lang

Shanghai Normal University

Abstract

Zeolitic imidazolate framework-8 (ZIF-8)/WS 2 composite 2D membrane was constructed by in-situ growth of ZIF-8 in the interlayer of WS 2 laminar membrane. The growth of ZIF-8 nanoparticles in WS 2 membrane expanded the interlayer spacing, and endowed WS 2 membrane with fixed interlayer spacing by coordination-bridges between WS 2 and ZIF-8, which made ZIF-8/WS 2 membrane possess not only high solvent permeability but also excellent stability in organic solvents. Isopropanol (IPA) permeance through ZIF-8/WS 2 membrane reached 271.6 L/m 2 ·h·bar, which was about 1.6 times higher than that of pristine WS 2 membrane. Furthermore, the IPA permeance through ZIF-8/WS 2 membrane was almost unchanged after soaking in IPA for 192 h, and IPA permeance and rejection rate for Direct Black 38 (DB 38) changed slightly during 100 h of cross-flow filtration, demonstrating remarkable stability of ZIF-8/WS 2 membrane in organic solvents, revealing a promising application potential in organic solvent nanofiltration.

Keywords: 2D membrane, WS2, ZIF-8, organic solvent nanofiltration

Suggested Citation

Wu, Shao-Chun and Chen, Yan and Yan, Xi and Guo, Xiao-Jing and Lang, Wan-Zhong, Zif-8 Channelled and Coordination-Bridging Two-Dimensional Ws2 Membrane for Efficient Organic Solvent Nanofiltration. Available at SSRN: https://ssrn.com/abstract=4036221 or http://dx.doi.org/10.2139/ssrn.4036221

Shao-Chun Wu

Shanghai Normal University ( email )

No.100 Guilin Road
Shanghai, 200234
China

Yan Chen (Contact Author)

Shanghai Normal University ( email )

No.100 Guilin Road
Shanghai, 200234
China

Xi Yan

Shanghai Normal University ( email )

No.100 Guilin Road
Shanghai, 200234
China

Xiao-Jing Guo

Shanghai Normal University ( email )

No.100 Guilin Road
Shanghai, 200234
China

Wan-Zhong Lang

Shanghai Normal University ( email )

No.100 Guilin Road
Shanghai, 200234
China

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