Three-dimensional covalent organic framework membrane for efficient proton conduction

Fan, Chunyang; Geng, Haobo; Wu, Hong; Quan, Peng; Wang, Xiaoyao; Shi, Benbing; Kong, Yan; Yin, Zhuoyu; Liu, Yiqin; Jiang, Zhongyi

doi:10.1039/d1ta05005b

“…We conducted the high‐resolution TEM (HRTEM) characterization on the s‐TFPM‐HZ membrane synthesized for 36 h. Consistent with the XPS analysis, the s‐TFPM‐HZ membrane presents the signals of C and N elements (Figure 3c). Significantly, the lattice fringes observed in the HRTEM image confirm the crystalline architecture of the interfacially synthesized TFPM‐HZ (Figure 3d) [30] . The surface properties of TFPM‐HZ/PAN membranes were investigated to correlate the characteristic and performance.…”

Section: Resultsmentioning

confidence: 67%

“…Significantly, the lattice fringes observed in the HRTEM image confirm the crystalline architecture of the interfacially synthesized TFPM-HZ (Figure 3d). [30] The surface properties of TFPM-HZ/PAN membranes were investigated to correlate the characteristic and performance. Zeta potential tests were used to evaluate the surface charges as a function of values.…”

Section: Methodsmentioning

confidence: 99%

Design of Three‐Dimensional Covalent Organic Framework Membranes for Fast and Robust Organic Solvent Nanofiltration

Shi

¹

,

Zhang

²

,

Yin

³

et al. 2022

View full text Add to dashboard Cite

Organic solvent nanofiltration (OSN) has become increasingly important in petrochemical and pharmaceutical industries, demanding superior and robust membranes. Herein, we report advanced OSN processes by designing three-dimensional covalent organic framework (3D COF) membranes through moderated interfacial crystallization. Nanoporous supports work as the moderator allowing the crystallization of 3D COF membranes. The 3D COF features sub-nanometer and anti-swelling channels, affording a sharp selectivity to fine targets with an exceptionally high and stable methanol permeance. Thus-synthesized membrane exhibits a record stability against high-concentration feeds and long-term operation for � 1000 h. Moreover, we unambiguously demonstrate that our membrane holds excellent practicality in purifying active pharmaceutical ingredients from organic liquids. This work reveals the great potential of distinctive 3D COFs in producing prominent OSN membranes for industrial applications.

show abstract

“…Significantly, the lattice fringes observed in the HRTEM image confirm the crystalline architecture of the interfacially synthesized TFPM-HZ (Figure 3d). [30] The surface properties of TFPM-HZ/PAN membranes were investigated to correlate the characteristic and performance. potential tests were used to evaluate the surface charges as a function of pH values.…”

Section: Resultsmentioning

confidence: 99%

Design of Three‐Dimensional Covalent Organic Framework Membranes for Fast and Robust Organic Solvent Nanofiltration

Shi

¹

,

Zhang

²

,

Yin

³

et al. 2022

Angewandte Chemie

0

View full text Add to dashboard Cite

Organic solvent nanofiltration (OSN) has become increasingly important in petrochemical and pharmaceutical industries, demanding superior and robust membranes. Herein, we report advanced OSN processes by designing three-dimensional covalent organic framework (3D COF) membranes through moderated interfacial crystallization. Nanoporous supports work as the moderator allowing the crystallization of 3D COF membranes. The 3D COF features sub-nanometer and anti-swelling channels, affording a sharp selectivity to fine targets with an exceptionally high and stable methanol permeance. Thus-synthesized membrane exhibits a record stability against high-concentration feeds and long-term operation for � 1000 h. Moreover, we unambiguously demonstrate that our membrane holds excellent practicality in purifying active pharmaceutical ingredients from organic liquids. This work reveals the great potential of distinctive 3D COFs in producing prominent OSN membranes for industrial applications.

show abstract

“…COF Membrane Preparation: According to the previous report, [42] COF membrane was prepared through interfacial polymerization. TAM (80 mg) was dissolved in 20 mL acetic acid aqueous solution (6.4 mL 36% acetic acid and 13.6 mL deionized water) as the lower aqueous phase.…”

Section: Methodsmentioning

confidence: 99%

Ultrathin Self‐Standing Covalent Organic Frameworks toward Highly‐Efficient Nanofluidic Osmotic Energy Generator

Tang

¹

,

Li

²

,

Wan

³

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Nanofluidics is promising in the construction of highly-efficient osmotic energy generator, but it is still a challenge to develop large-scale and highperformance nanofluidic membranes. The emerging covalent organic frameworks (COFs) provide a desirable platform to create nanofluidic membranes with high ion selectivity and permeability towards effective osmotic energy conversion. Herein, an ultrathin self-standing COF nanofluidic membranes based on terephthalaldehyde-tetrakis(4-aminophenyl)methane is developed to construct high-efficiency nanofluidic osmotic energy generator. Benefiting from the nano-confined channels (1.4 nm) and negative surface charges, the COF based nanofluidic membrane demonstrates both excellent cation selectivity and high ion conductance. Moreover, an ultrathin thickness of ≈1.5 µm significantly reduces the membrane resistance. Consequently, the nanofluidic osmotic energy generator based on COF membrane can deliver a high output power of 5.31 W m −2 under a 50-fold salinity gradient simulating natural river/ sea junction, which is superior to most reported systems and reaches the industrial level. More importantly, such a COF nanofluidic membrane exhibits excellent stability in response to various environmental factors, including wide saline solution concentration, temperature and pH ranges. This work is anticipated to highlight the great potential of 1D COF nanofluidic membranes toward highly-efficient osmotic energy generators.

show abstract

Three-dimensional covalent organic framework membrane for efficient proton conduction

Abstract: Fabricating three-dimensional (3D) covalent organic framework (COF) membranes is in infancy stage. Here, we report the fabrication of free-standing uniform 3D COF membrane, COF-300 membrane, with interconnected nanochannels using interfacial...

Cited by 37 publications

References 50 publications

Design of Three‐Dimensional Covalent Organic Framework Membranes for Fast and Robust Organic Solvent Nanofiltration

Design of Three‐Dimensional Covalent Organic Framework Membranes for Fast and Robust Organic Solvent Nanofiltration

Design of Three‐Dimensional Covalent Organic Framework Membranes for Fast and Robust Organic Solvent Nanofiltration

Ultrathin Self‐Standing Covalent Organic Frameworks toward Highly‐Efficient Nanofluidic Osmotic Energy Generator

Contact Info

Product

Resources

About