Harnessing Bio‐Inspired Axial Coordination to Boost Synergistic Effects for Enhanced Bifunctional Oxygen Electrocatalysis DOI Open Access
Surajit Samui,

Asif Iqbal,

Ranjit Thapa

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Strategic alteration of the chelating atoms around metal center can modify electronic band structure electrocatalyst, improving its performance in oxygen evolution and reduction reactions (OER/ORR). Advancements development catalysts with heteroatoms axial modifications coordination sphere are mostly limited to single-molecule electrocatalysts or elevated temperature-mediated pyrolysis approaches for electrocatalysis. Inspired by biological catalytic systems coordination, a pyrolysis-free strategic methodology is adopted synthesis an iron-metaled covalent organic polymer matrix axially laminated over cobalt-based metal-organic framework through imidazole moiety. Precise engineering synthesized core-shell material, featuring dual sites distinct neighboring atom exhibits mutual synergy due presence bridging moiety between two sites. Modulated synergism navigates such that it favors specific reactant adsorption on during bifunctional O2 electrocatalysis as confirmed situ Raman spectroscopy attenuated total reflection infrared (ATR-IR) spectroscopy. Through dynamic correlation in-situ studies modified d-band obtained theoretically, pivotal role linkage mediated favoring ORR/OER process via target-specific demonstrated.

Language: Английский

Dithiine-linked metalphthalocyanine framework with undulated layers for highly efficient and stable H2O2 electroproduction DOI Creative Commons

Qianjun Zhi,

Rong Jiang, Xiya Yang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 23, 2024

Realization of stable and industrial-level H

Language: Английский

Citations

61
Structural regulation of covalent organic frameworks for advanced electrocatalysis DOI
Liyuan Xiao, Luoluo Qi,

Jingru Sun

et al.

Nano Energy, Journal Year: 2023, Volume and Issue: 120, P. 109155 - 109155

Published: Dec. 2, 2023

Language: Английский

Citations

55
Engineering organic polymers as emerging sustainable materials for powerful electrocatalysts DOI
Xun Cui, Mingjie Wu,

Xueqin Liu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(3), P. 1447 - 1494

Published: Jan. 1, 2024

A comprehensive overview on organic polymers as electrocatalysts is summarized. By presenting the engineering strategies, insightful understandings, challenges, and perspectives, we hope this review can provide valuable references for readers.

Language: Английский

Citations

41
State-of-the-art advancements in single atom electrocatalysts originating from MOFs for electrochemical energy conversion DOI
Ning Song, Jizhou Jiang,

Shihuan Hong

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2024, Volume and Issue: 59, P. 38 - 81

Published: April 1, 2024

Language: Английский

Citations

34
Rational Design of Organic Electrocatalysts for Hydrogen and Oxygen Electrocatalytic Applications DOI Creative Commons
Ruiqi Cheng,

Xiaoqian He,

Kaiqi Li

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: March 8, 2024

Abstract Efficient electrocatalysts are pivotal for advancing green energy conversion technologies. Organic electrocatalysts, as cost‐effective alternatives to noble‐metal benchmarks, have garnered attention. However, the understanding of relationships between their properties and electrocatalytic activities remains ambiguous. Plenty research articles regarding low‐cost organic started gain momentum in 2010 been flourishing recently though, a review article both entry‐level experienced researchers this field is still lacking. This underscores urgent need elucidate structure–activity relationship design suitable electrode structures, leveraging unique features like controllability compatibility real‐world applications. classified into four groups: small molecules, oligomers, polymers, frameworks, with specific structural physicochemical serving activity indicators. To unlock full potential five strategies discussed: integrated surface property modulation, membrane technologies, electrolyte affinity regulation, addition anticorrosion species, all aimed at enhancing charge efficiency, mass transfer, long‐term stability during reactions. The offers comprehensive overview current state practical applications, bridging gap paving way future developments more efficient

Language: Английский

Citations

16
Review of covalent organic frameworks for single-site photocatalysis and electrocatalysis DOI

Qing Niu,

Linhua Mi,

Wei Chen

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2023, Volume and Issue: 50, P. 45 - 82

Published: July 1, 2023

Language: Английский

Citations

31
Highly efficient solar steam evaporation via elastic polymer covalent organic frameworks monolith DOI Creative Commons
A-Wei Hu, Yuan Zhao, Qing Hu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 2, 2024

Three-dimensional solar steam evaporators with efficient water purification performance have received increasing attention recently. Herein, elastic polymer covalent organic frameworks (PP-PEG) containing PEG chains intriguing adaptability to guests are prepared by forming porphyrin rings. PP-PEG foams demonstrate full spectrum absorbance and excellent photothermal conversion properties. Through well-designed thermal management optimization of the hydrophilicity chain length, we obtain a highly evaporator an evaporation rate 4.89 kg m

Language: Английский

Citations

13
Precisely Engineering Asymmetric Atomic CoN4 by Electron Donating and Extracting for Oxygen Reduction Reaction DOI Creative Commons
Minghui Lv, Cheng‐Xing Cui, Niu Huang

et al.

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

Published: March 8, 2024

Abstract The development of nonpyrolytic catalysts featuring precisely defined active sites represents an effective strategy for investigating the fundamental relationship between catalytic activity oxygen reduction reaction (ORR) and their local coordination environments. In this study, we have synthesized a series model electrocatalysts with well‐defined CoN 4 centers nonplanar symmetric structures. These were prepared by sequential process involving chelation cobalt salts 1,10‐phenanthroline‐based ligands various substituent groups (phen(X), where X=OH, CH 3 , H, Br, Cl) onto covalent triazine frameworks (CTFs). By modulating electron‐donating or electron‐withdrawing properties on phen‐based ligands, electron density surrounding was effectively controlled. Our results demonstrated direct correlation ability group phenanthroline ligands. Notably, catalyst denoted as BCTF−Co‐phen(OH), OH group, exhibited highest ORR activity. This custom‐crafted achieved remarkable half‐wave potential up to 0.80 V vs. RHE impressive turnover frequency (TOF) value 47.4×10 −3 Hz at in alkaline environment.

Language: Английский

Citations

12
Construction of imide‐linked covalent organic frameworks with palladium nanoparticles for oxygen reduction reaction DOI Creative Commons

Zhuangyan Guo,

Shuai Yang, Minghao Liu

et al.

EcoEnergy, Journal Year: 2024, Volume and Issue: 2(1), P. 192 - 201

Published: March 1, 2024

Abstract Covalent organic frameworks (COFs) have been widely employed as electrocatalysts for oxygen reduction reaction (ORR) due to their diverse and tunable skeletons pores. However, electrocatalytic activity was limited the lack of highly active catalytic sites. In this work, we first immobilized palladium nanoparticles (NPs) into crystal, porous, stable imide‐linked COF ORR. The newly designed had pyridine linkers with imide‐linkages in serving binding sites anchor Pd sites, high surface area open pore channels provide fast mass transport pathway which contributed performance And catalyst delivered onset potential half‐wave COF‐Pd 0.97 0.83 V, a current density 6.1 mA cm −2 , respectively. This work provides us insights developing crystalline COFs metal NPs systems.

Language: Английский

Citations

11
Synergistic Modulating Interlayer Space and Electron‐Transfer of Covalent Organic Frameworks for Oxygen Reduction Reaction DOI
Chao Lin, Xiubei Yang, Lipeng Zhai

et al.

Small, Journal Year: 2024, Volume and Issue: 20(28)

Published: Feb. 13, 2024

Abstract Covalent organic frameworks (COFs) are an ideal template to construct high‐efficiency catalysts for oxygen reduction reaction (ORR) due their predictable properties. However, the closely parallel‐stacking manner and lacking intramolecular electron transfer ability of COFs limit atomic utilization efficiency intrinsic activity. Herein, constructed with large interlayer distances enhanced electronic by side‐chain functionalization. Long chains electron‐donating features not only enlarge distance, but also narrow bandgap. The resulting DPPS‐COF displays higher electrochemical surface areas provide more exposed active sites, despite <1/10 areas. exhibits excellent electrocatalytic ORR activity half‐wave potential 0.85 V, which is 30 60 mV positive than those Pt/C DPP‐COF, record among reported COFs. employed as cathode electrocatalyst zinc‐air battery a maximum power density 185.2 mW cm −2 , superior Pt/C. Theoretical calculation further reveals that longer electronic‐donating facilitate formation intermediate OOH* from O 2 promote intermediates desorption thus leading

Language: Английский

Citations

10