A COF-coated polyamide membrane fabricated by vapor-assisted conversion for water-in-oil emulsion separation

Chen, Ying; Chen, Li; Lu, Chenyang; Wang, Linghao; Dong, Lichun; Zhou, Cailong; Huang, Xiaowei

doi:10.1039/d2nj04570b

Cited by 7 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The continuous CSU of Mg 2+ was monitored under various conditions by the following parameters: Mg retention (R Mg ) 50 and separation flux (F Mg ). The separation flux is modified from the permeation flux reported by Chen et al 51 We have introduced the concentration of the adsorbate and the mass of the adsorbent terms to explain the adsorption under flow conditions. R Mg (%) and F Mg (m −2 h −1 ) are defined by eqs (4and 5).…”

Section: Desorption Kineticsmentioning

confidence: 99%

Lithium Pyrene Squarate Covalent Organic Frameworks for Efficient Lithium and Magnesium Separation from Salt Water

Altaf

Khosropour

Zadehnazari

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The increasing pressure for lithium resources from the electric vehicle and nuclear energy industries means that new technologies to separate Mg2+ from Li+ from salt water are in demand. To address this need, we fabricated lithium pyrene squarate covalent organic frameworks (Li-SQCOFs) to separate Mg2+/Li+ mixtures from salt water. We optimized the effect of the electrolyte and the amount of the adsorbent and then carried out a kinetics study on the adsorbent recovery at various pH levels using both batch and continuous flow adsorption methods. Li-SQCOF was found to have excellent selectivity for solutions containing a mixture of Mg2+/Li+ ions. This work represents a unique path for the separation of Mg2+/Li+ through direct adsorption using a covalent organic framework (COF). The COF-supported ultrafiltration bed made in this study gave a Mg2+ separation flux of 60.5 h–1 m–2.

show abstract

Section: Desorption Kineticsmentioning

confidence: 99%

Lithium Pyrene Squarate Covalent Organic Frameworks for Efficient Lithium and Magnesium Separation from Salt Water

Altaf

Khosropour

Zadehnazari

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Covalent Organic Frameworks for Membrane Separation

Jin,

Li,

Yang

2024

Advanced Science

View full text Add to dashboard Cite

Membranes with switchable wettability, solvent resistance, and toughness have emerged as promising materials for separation applications. However, challenges like limited mechanical strength, poor chemical stability, and structural defects during membrane fabrication hinder their widespread adoption. Covalent organic frameworks (COFs), crystalline materials constructed from organic molecules connected by covalent bonds, offer a promising solution due to their high porosity, stability, and customizable properties. The ordered structures and customizable functionality provide COFs with a lightweight framework, large surface area, and tunable pore sizes, which have attracted increasing attention for their applications in membrane separations. Recent research has extensively explored the preparation strategies of COF membranes and their applications in various separation processes. This review uniquely delves into the influence of various COF membrane fabrication techniques, including interfacial polymerization, layer‐by‐layer assembly, and in situ growth, on membrane thickness and performance. It comprehensively explores the design strategies and potential applications of these methods, with a particular focus on gas separation, oil/water separation, and organic solvent nanofiltration. Furthermore, future opportunities, challenges within this field, and potential directions for future development are proposed.

show abstract

Robust superhydrophobic PVDF membrane constructed by template-assisted strategy via thermally induced phase separation for rapid water-in-oil emulsions separation

Zhang,

Wei,

Hao

et al. 2023

Chemical Engineering Science

View full text Add to dashboard Cite

A COF-coated polyamide membrane fabricated by vapor-assisted conversion for water-in-oil emulsion separation

Abstract: The separation of water-in-oil emulsion is of great significance, but some difficulties remain in the present study. Here, a COFs-coated polyamide membrane (PA@COF) was prepared by vapor-assisted conversion at room...

Cited by 7 publications

References 31 publications

Lithium Pyrene Squarate Covalent Organic Frameworks for Efficient Lithium and Magnesium Separation from Salt Water

Lithium Pyrene Squarate Covalent Organic Frameworks for Efficient Lithium and Magnesium Separation from Salt Water

Covalent Organic Frameworks for Membrane Separation

Robust superhydrophobic PVDF membrane constructed by template-assisted strategy via thermally induced phase separation for rapid water-in-oil emulsions separation

Contact Info

Product

Resources

About