Molecular Engineering for Modulating Photocatalytic Hydrogen Evolution of Fully Conjugated 3D Covalent Organic Frameworks DOI
Yaqin Wang, Zelong Qiao, Han Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(25)

Published: April 16, 2024

Covalent organic frameworks (COFs) have recently shown great potential for photocatalytic hydrogen production. Currently almost all reports are focused on two-dimensional (2D) COFs, while the 3D counterparts rarely explored due to their non-conjugated derived from sp

Language: Английский

Research Progress in Donor−Acceptor Type Covalent Organic Frameworks DOI Open Access
Yeqing Xia, Weifeng Zhang, Shuai Yang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(48)

Published: April 24, 2023

Covalent organic frameworks (COFs) are new porous materials constructed by covalent bonds, with the advantages of pre-designable topology, adjustable pore size, and abundant active sites. Many research studies have shown that COFs exhibit great potential in gas adsorption, molecular separation, catalysis, drug delivery, energy storage, etc. However, electrons holes intrinsic COF prone to compounding transport, carrier lifetime is short. The donor-acceptor (D-A) type COFs, which synthesized introducing D A units into backbone, combine separated electron hole migration pathway, tunable band gap optoelectronic properties D-A polymers unique made progress related recent years. Here, synthetic strategies first outlined, including rational design linkages as well functionalization approaches. Then applications catalytic reactions, photothermal therapy, electronic systematically summarized. In final section, current challenges, directions for development presented.

Language: Английский

Citations

102
A Universal Strategy for Boosting Hydrogen Evolution Activity of Polymer Photocatalysts under Visible Light by Inserting a Narrow‐Band‐Gap Spacer between Donor and Acceptor DOI

Changzhi Han,

Sihui Xiang,

Peixuan Xie

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(16)

Published: Jan. 4, 2022

Abstract It is challenging for polymer photocatalysts to achieve high photocatalytic performance under visible light due their weak absorption in region. Herein, a universal strategy boosting the activity of donor–acceptor (D–A) conjugated upon irradiation by inserting π‐spacer thiophene unit between electron donors and acceptors form D–π–A molecular structure reported. The introduction with narrow band gap can enhance conjugation degree chains extend range. Meanwhile, spacer through ternary copolymerization also enables controllability on chemical resulting polymers altering feed ratio acceptors. optimized copolymer photocatalyst shows an impressive hydrogen evolution rate (HER) 78.4 mmol h –1 g irradiation, HER could be further improved 127.9 UV–vis loading 1 wt% Pt co‐catalyst. More importantly, this extended other polymeric different donor acceptor units, demonstrating universality enhancing photocatalysts.

Language: Английский

Citations

100
S-scheme heterojunction of black TiO2 and covalent-organic framework for enhanced photocatalytic hydrogen evolution DOI

Yang-Peng Zhang,

Wei Han, Yan Yang

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 446, P. 137213 - 137213

Published: May 26, 2022

Language: Английский

Citations

99
Enaminone‐Linked Covalent Organic Frameworks for Boosting Photocatalytic Hydrogen Production DOI Open Access
Xinyu Guan, Yunyang Qian, Xiyuan Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(31)

Published: May 31, 2023

Covalent organic frameworks (COFs), possessing pre-designable structures and tailorable functionalities, are promising candidates for photocatalysis. Nevertheless, the most studied imine-linked COFs (Im-COFs) usually suffer from unsatisfactory stability photocatalytic performance. To meet this challenge, a series of highly stable enaminone-linked (En-COFs) have been synthesized afford much improved visible-light-driven hydrogen production activities, ranging 44 to 1078 times that isoreticular Im-COFs, with only difference being linkages (enaminone vs. imine) in their structures. The enhanced light-harvesting ability, facilitated exciton dissociation chemical account superior activity. Furthermore, quinoline-linked (Qu-COFs) further obtained via post-modification Im-COFs. Compared activities Qu-COFs significantly after modification, but still below those corresponding En-COFs (3-107 times). facile synthesis, excellent activity, high demonstrate platform

Language: Английский

Citations

91
Ultrathin layered 2D/2D heterojunction of ReS2/high-crystalline g-C3N4 for significantly improved photocatalytic hydrogen evolution DOI
Tingyu Yang, Yuanyuan Shao, Jundie Hu

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 448, P. 137613 - 137613

Published: June 17, 2022

Language: Английский

Citations

76
An Efficient Electron Donor for Conjugated Microporous Polymer Photocatalysts with High Photocatalytic Hydrogen Evolution Activity DOI

Changzhi Han,

Sihui Xiang,

Mantang Ge

et al.

Small, Journal Year: 2022, Volume and Issue: 18(28)

Published: June 10, 2022

Conjugated microporous polymers (CMPs) with donor-acceptor (D-A) molecular structure show high photocatalytic activity for hydrogen evolution due to the efficient light-induced electron/hole separation, which is mostly determined by nature of electron donor and acceptor units. Therefore, selection holds key point construct performance polymer photocatalysts. Herein, two dibenzo[b,d]thiophene-S,S-dioxide (BTDO) containing CMP photocatalysts using tetraphenylethylene (TPE) or dibenzo[g,p]chrysene (DBC) as investigate influence geometry on are design synthesized. Compared twisted TPE donor, DBC has a planar extended π-conjugation, promotes charges transmission separation. As result, DBC-BTDO produced from shows remarkable rate (HER) 104.86 mmol h-1 g-1 under full arc light (λ > 300 nm), much higher than that TPE-BTDO (1.80 ), demonstrating can be an constructing D-A evolution.

Language: Английский

Citations

75
Copper-decorated covalent organic framework as a heterogeneous photocatalyst for phosphorylation of terminal alkynes DOI
Yuxuan Chen, Mo Zhang, Shuai‐Zheng Zhang

et al.

Green Chemistry, Journal Year: 2022, Volume and Issue: 24(10), P. 4071 - 4081

Published: Jan. 1, 2022

A copper decorated covalent organic framework has been prepared and identified as an efficient heterogeneous photocatalyst for the phosphorylation of terminal alkynes.

Language: Английский

Citations

74
Covalent organic frameworks in heterogeneous catalysis: recent advances and future perspective DOI
Ziad Alsudairy,

Normanda Brown,

Allea Campbell

et al.

Materials Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 7(16), P. 3298 - 3331

Published: Jan. 1, 2023

This review provides an overview of the recent advances in heterogeneous catalysis using COFs, primarily from 2020 to 2023, covering fundamentals, advantages, current challenges, and future perspectives.

Language: Английский

Citations

64
Strategic design of covalent organic frameworks (COFs) for photocatalytic hydrogen generation DOI
Kamal Prakash, Bikash Mishra, David Díaz Díaz

et al.

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(27), P. 14489 - 14538

Published: Jan. 1, 2023

Covalent organic frameworks provide a platform for the integration of functional linkers into ordered yet tunable two-dimensional to yield π–π stacked conjugated materials photocatalytic water splitting hydrogen generation.

Language: Английский

Citations

63
Vinyl‐Group‐Anchored Covalent Organic Framework for Promoting the Photocatalytic Generation of Hydrogen Peroxide DOI
Hong Yu,

Fengtao Zhang,

Qian Chen

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(21)

Published: March 16, 2024

The artificial photosynthesis of H

Language: Английский

Citations

59