Design, Preparation, and High Intrinsic Proton Conductivity of Two Highly Stable Hydrazone-Linked Covalent Organic Frameworks DOI

Shuai‐Long Zhang,

Guo Zhong-cheng,

Kai-Yin Xu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(27), P. 33148 - 33158

Published: June 29, 2023

Assembling crystalline materials with high stability and proton conductivity as a potential alternative to the Nafion membrane is challenging topic in field of energy materials. Herein, we concentrated on creation preparation hydrazone-linked COFs super-high explore their conduction. Fortunately, two COFs, TpBth TaBth, were solvothermally prepared by using benzene-1,3,5-tricarbohydrazide (Bth), 2,4,6-trihydroxy-benzene-1,3,5-tricarbaldehyde (Tp), 2,4,6-tris(4-formylphenyl)-1,3,5-triazine (Ta) monomers. Their structures simulated Material Studio 8.0 software confirmed PXRD pattern, demonstrating two-dimensional framework AA packing. The presence large number carbonyl groups well -NH-NH2- backbone responsible for water absorption capacity. AC impedance tests demonstrated positive correlation between water-assisted (σ) temperature humidity. Under 100 °C/98% RH, highest σ values TaBth can reach 2.11 × 10-4 0.62 10-5 S·cm-1, which are among reported COFs. proton-conductive mechanisms highlighted structural analyses N2 H2O vapor adsorption data activation values. Our systematic research affords ideas synthesis proton-conducting

Language: Английский

Improving Active Site Local Proton Transfer in Porous Organic Polymers for Boosted Oxygen Electrocatalysis DOI
Qian Zhao, Qingxin Zhang, Yuhan Xu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(47)

Published: Aug. 15, 2024

Abstract Improving proton transfer is vital for electrocatalysis with porous materials. Although several strategies are reported to assist in channels, few studies dedicated improving at the local environments of active sites Herein, we report on new Co‐corrole‐based organic polymers (POPs) improved electrocatalytic oxygen reduction reaction (ORR) and evolution (OER). By tuning pore sizes installing relays Co corrole sites, designed synthesized POP‐2‐OH both channels sites. This POP shows remarkable activity ORR E 1/2 =0.91 V vs RHE OER η 10 =255 mV. Therefore, this work significant present a strategy improve site materials highlight key role such structural functionalization boosting electrocatalysis.

Language: Английский

Citations

6
Ultrahigh ion selectivity composite membrane contained cationic covalent organic nanosheets for vanadium redox flow battery DOI
Haojie Liu, Min Liu, Yitian Zhang

et al.

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 713, P. 123314 - 123314

Published: Sept. 7, 2024

Language: Английский

Citations

6
Covalent-organic porous framework (COF) integrated hybrid membranes for energy and environmental applications: Current and future perspectives DOI
P.S. Mohan,

B. Sasikumar,

S. A. Gokula Krishnan

et al.

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2023, Volume and Issue: unknown, P. 105067 - 105067

Published: Aug. 1, 2023

Language: Английский

Citations

16
Bioinspired Heterogeneous Construction of Lignocellulose‐Reinforced COF Membranes for Efficient Proton Conduction DOI
Liyu Zhu, Peng Ye, Limei Zhang

et al.

Small, Journal Year: 2023, Volume and Issue: 20(3)

Published: Sept. 7, 2023

The exponential interest in covalent organic frameworks (COFs) arises from the direct correlation between their diverse and intriguing properties modular design principle. However, insufficient interlamellar interaction among COF nanosheets greatly hinders formation of defect-free membranes. Therefore, developing a methodology for facile fabrication these materials remains an enticing highly desirable objective. Herein, ultrahigh proton conductivity superior stability are achieved by taking advantage composite membranes where 2D TB-COF linked 1D lignocellulosic nanofibrils (LCNFs) through π-π electrostatic interactions to form robust ordered structure. Notably, high concentration -SO

Language: Английский

Citations

15
Incorporating graphene oxide into COF membranes enables ultrahigh proton conductivity and ultralow H2 crossover DOI
Na Xing,

Xiao Pang,

Qingrui Meng

et al.

Journal of Membrane Science, Journal Year: 2023, Volume and Issue: 688, P. 122103 - 122103

Published: Sept. 27, 2023

Language: Английский

Citations

14
Optimizing selectivity via membrane molecular packing manipulation for simultaneous cation and anion screening DOI Creative Commons

Qing-Wei Meng,

Jianguo Li,

Zhuozhi Lai

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(39)

Published: Sept. 25, 2024

Advancing membranes with enhanced solute-solute selectivity is essential for expanding membrane technology applications, yet it presents a notable challenge. Drawing inspiration from the unparalleled of biological systems, which benefit sophisticated spatial organization functionalities, we posit that manipulating arrangement membrane’s building blocks, an aspect previously given limited attention, can address this We demonstrate optimizing face-to-face orientation blocks during assembly covalent-organic-framework (COF) improves ion-π interactions multivalent ions. This optimization leads to extraordinary in differentiating between monovalent cations and anions their counterparts, achieving factors 214 K + /Al 3+ 451 NO 3 − /PO 4 3− . Leveraging attribute, COF facilitates direct extraction NaCl seawater purity 99.57%. These findings offer alternative approach designing highly selective materials, offering promising prospects advancing membrane-based technologies.

Language: Английский

Citations

5
Zwitterionic and Hydrophilic Vinylene-Linked Covalent Organic Frameworks for Efficient Photocatalytic Hydrogen Evolution DOI
Hai‐Feng Ji,

Danyang Qiao,

Gaojie Yan

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(31), P. 37845 - 37854

Published: July 25, 2023

Developing effective synthetic strategies as well broadening functionalities for zwitterionic materials that comprise moieties with equimolar cationic and anionic groups still remains a huge challenge. Herein, we develop two vinylene-linked covalent organic frameworks (Zi-VCOF-1 Zi-VCOF-2) are type of novel hydrophilic material. Zi-VCOF-1 Zi-VCOF-2 obtained directly through the convenient Knoevenagel condensation new sulfonic-pyridinium monomers aromatic aldehyde derivatives. This is first report on COFs being constructed by bottom-up functionalization approach from predesigned monomers. Both Zi-VCOFs exhibit high photocatalytic hydrogen evolution rate (HER) because their appropriate optical property outstanding hydrophilicity. Specifically, show HER 13,547 5057 μmol h–1 g–1, respectively. Interestingly, about 2.68 times Zi-VCOF-2, although they differ only one methyl group in pairs. The not highest but also among most reported COFs. application evolution, which would open frontier be helpful design other materials.

Language: Английский

Citations

12
Subnanometer Nanowire‐Reinforced Construction of COF‐Based Membranes with Engineering Biomimetic Texture for Efficient and Stable Proton Conduction DOI
Liyu Zhu, Limei Zhang, Yuting Ren

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(17)

Published: Dec. 22, 2023

Abstract Achieving rapid ion transport through nanochannels is essential for both biological and artificial membrane systems. Covalent organic frameworks (COFs) with well‐defined nanostructures hold great promise addressing the above challenge. However, due to limited processability inadequate interlamellar interaction of COF materials, it extremely difficult integrate them prepare high‐performance proton conductors. Herein, inspired by ingenious bio‐adhesion strategy in nature, ultrafast conduction achieved taking advantage membranes where TP‐COF nanosheets are linked subnanometer nanowires/lignocellulosic nanofibrils composites (SNWs/LCNFs) electrostatic π‐π interactions form an ordered robust structure. Notably, synthesized SNWs exhibited impressive conductivity adhesion capacity their inbuilt phosphotungstic acid (HPW) molecules multidimensional interactions. Therefore, attributed synergistic contribution TP‐COFs SNWs, composite achieves ultrahigh (0.395 S cm −1 at 80 °C 100% RH), superior mechanical property (109.8 MPa), exceptional fuel cell performance (71.6 mW −2 ), operational stability (OCV decay rate about 1.5 mV h demonstrating outstanding competitiveness. More importantly, proposed design concept has potential be applied various electrochemical devices molecular separations.

Language: Английский

Citations

11
Building ordered graphene membranes by intermediate layer assisted stacking method for promoted desalination DOI

Leyao Liu,

Yunchen Wu,

Luzheng Peng

et al.

Desalination, Journal Year: 2024, Volume and Issue: 583, P. 117672 - 117672

Published: April 22, 2024

Language: Английский

Citations

4
Angstrom‐scale channels with versatile ion‐membrane interactions enabling precise ion separation via electrodialysis DOI

Yiren Zhang,

Yuqing Lin, Ning Gan

et al.

AIChE Journal, Journal Year: 2024, Volume and Issue: 70(10)

Published: June 18, 2024

Abstract In nature, efficient and selective ion transport is facilitated by ion‐conductive channels in cell membranes; these reveal an architectural design with specialized functionality. Drawing inspiration from this, mechanistic insights into the angstrom‐scale‐channel membrane composed of ionic‐crosslinked polybenzimidazole sulfonated poly(ether ether ketone), exhibiting functional differentiation ion‐sieving properties are presented. Nanochannels allow for strong hydrogen‐bonding interactions hydrated ions higher polarity, while rendering significant electrostatic charge effects that impede transition multivalent compressing effective passageways. Both hydrogen bonding synergistically result high selectivity monovalent over because latter requires overcoming energy barriers compared former, thereby causing varying extents dehydration within nanochannels. The resulting achieves a permeation rate 1.35 mol m −2 h −1 mono/multivalent 56.5 K + /Mg 2+ 286 /Al 3+ .

Language: Английский

Citations

4