Controlled Synthesis of Nitro-Terminated Oligothiophene/Crystallinity-Improved g-C3N4 Heterojunctions for Enhanced Visible-Light Catalytic H2 Production DOI
Yong Li,

Xulong Pang,

Qi Zhao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(4), P. 5365 - 5377

Published: Jan. 17, 2023

It is highly desired to explore closely contacted polymer semiconductor/g-C3N4 heterojunction photocatalysts with promoted photogenerated-carrier separation and extended visible-light response for efficient visible-light-driven H2 production. Here, we first synthesized the nitro-terminated oligothiophene (OTh) by controlled copolymerization of thiophene 2-nitrothiophene monomers, then constructed oligothiophene/crystallinity-improved g-C3N4 (OTh/g-C3N4) heterojunctions a grinding-induced combination strategy. The ratio-optimized 20OTh5/g-C3N4 shows production activity up 3.63 mmol h-1 g-1 under irradiation, ∼25.9-time enhancement compared that g-C3N4. As verified time-resolved photoluminescence spectra, surface photovoltage fluorescence spectra related •OH amounts, improved photocatalytic due transfer in expanded response. also confirmed OTh chain length, crystallinity, tight interface contact dependent on hydrogen bonds N···S interactions between are reasonable enhanced electron from This work illustrates feasible strategy construct solar-light-driven

Language: Английский

Understanding Advanced Transition Metal‐Based Two Electron Oxygen Reduction Electrocatalysts from the Perspective of Phase Engineering DOI Creative Commons
Hongyuan Yang, Na An, Zhenhui Kang

et al.

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

Published: March 8, 2024

Abstract Non‐noble transition metal (TM)‐based compounds have recently become a focal point of extensive research interest as electrocatalysts for the two electron oxygen reduction (2e − ORR) process. To efficiently drive this reaction, these TM‐based must bear unique physiochemical properties, which are strongly dependent on their phase structures. Consequently, adopting engineering strategies toward structure has emerged cutting‐edge scientific pursuit, crucial achieving high activity, selectivity, and stability in electrocatalytic This comprehensive review addresses intricate field applied to non‐noble 2e ORR. First, connotation fundamental concepts related kinetics thermodynamics succinctly elucidated. Subsequently, focus shifts detailed discussion various approaches, including elemental doping, defect creation, heterostructure construction, coordination tuning, crystalline design, polymorphic transformation boost or revive ORR performance (selectivity, stability) catalysts, accompanied by an insightful exploration phase‐performance correlation. Finally, proposes fresh perspectives current challenges opportunities burgeoning field, together with several critical directions future development electrocatalysts.

Language: Английский

Citations

32

Covalent Organic Frameworks for Photocatalytic Hydrogen Peroxide Generation DOI

Akhtar Alam,

Bidhan Kumbhakar,

Avanti Chakraborty

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(5), P. 2007 - 2049

Published: April 17, 2024

Hydrogen peroxide (H2O2), a valuable chemical, is widely used as powerful oxidizing agent in chemical synthesis, pharmaceuticals, medical disinfection, and environmental treatment industries. Currently, over 95% of H2O2 produced industrially using the anthraquinone process, which associated with its high energy consumption hazardous byproducts. Therefore, photochemical synthesis from water oxygen covalent organic framework based photocatalysts have attracted considerable attention. This review aims to outline recent achievements, challenges future prospects COFs heterogeneous for sustainable generation. We summarize chronological development COFs, different mechanisms involved, detailed experiments quantification methods photocatalytic The puts forward an outlook, highlighting advantages limitations anticipate that this will provide insight into current progress inspire next-generation production.

Language: Английский

Citations

29

A Naphthalenetetracarboxdiimide‐Containing Covalent Organic Polymer: Preparation, Single Crystal Structure and Battery Application DOI Creative Commons

Qiang Dong,

Tuoya Naren, Lei Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(26)

Published: April 20, 2024

Inspired by dative boron-nitrogen (B←N) bonds proven to be the promising dynamic linkage for construction of crystalline covalent organic polymers/frameworks (COPs/COFs), we employed 1,4-bis(benzodioxaborole) benzene (BACT) and N,N'-Di(4-pyridyl)-1,4,5,8-naphthalenetetracarboxdiimide (DPNTCDI) as corresponding building blocks construct a functional COP (named CityU-25), which had been an anode in rechargeable lithium ion batteries. CityU-25 displayed excellent reversible storage capability 455 mAh/g after 170 cycles at 0.1 A/g, impressive one 673 720 0.5 A/g. These findings suggest that is standout candidate advanced battery technologies, highlighting potential application this type materials.

Language: Английский

Citations

27

A comprehensive review of covalent organic frameworks (COFs) and their derivatives in environmental pollution control DOI Creative Commons
Shengbo Ge,

Kexin Wei,

Wanxi Peng

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Covalent organic frameworks (COFs) have gained considerable attention due to their design possibilities as the molecular building blocks that can stack in an atomically precise spatial arrangement.

Language: Английский

Citations

26

Donor–acceptor hetero[6]radialene-based three-dimensional covalent organic frameworks for organic pollutant adsorption, photocatalytic degradation, and hydrogen production activity DOI

Jing Han Wang,

Ahmed E. Hassan, Ahmed M. Elewa

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(23), P. 14005 - 14021

Published: Jan. 1, 2024

By investigating the effects of electron donor topology and hetero[6]radialene structure on 3D COF photocatalytic activity, a twisted BF was found to improve organic pollutant degradation water hydrogen production.

Language: Английский

Citations

22

Superlative Porous Organic Polymers for Photochemical and Electrochemical CO2 Reduction Applications: From Synthesis to Functionality DOI
Syed Asim Ali,

Iqra Sadiq,

Tokeer Ahmad

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(20), P. 10414 - 10432

Published: May 10, 2024

To mimic the carbon cycle at a kinetically rapid pace, sustainable conversion of omnipresent CO

Language: Английский

Citations

21

Progress of Covalent Organic Framework Photocatalysts: From Crystallinity–Stability Dilemma to Photocatalytic Performance Improvement DOI

Huili Ran,

Quanlong Xu, Yun Yang

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(15), P. 11675 - 11704

Published: July 22, 2024

Language: Английский

Citations

20

Molecular Engineering of Organic Electrode Materials for Beyond Lithium‐Ion Batteries DOI Open Access
Yunling Wu,

Hualin Ye,

Yanguang Li

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Abstract Lithium‐ion batteries (LIBs), known for their high energy density and long cycle life, have become indispensable in everyday applications. Unfortunately, the increasing demand LIBs raises concerns about sustainability of lithium resources. Non‐lithium metal‐ion therefore garnered significant attention due to abundant resources potential cost advantages. Yet, widespread adoption is hindered by limited availability high‐performance cathode materials. Organic electrode materials (OEMs) emerged as promising candidates, owing structural diversity tunability, allowing them accommodate large cations. Despite potential, most OEMs suffer from unsatisfactory cyclability, poor rate performance, low density. This review summarizes recent advancements improving electrochemical performance OEMs, focusing on molecular engineering approaches mitigate dissolution, enhance conductivity The charge storage mechanism current challenges associated with are first discussed. Various strategies designed address these then explored, including linkage improve stability electronic Finally, insights provided future development next‐generation battery technologies beyond LIBs.

Language: Английский

Citations

2

Solvent polarity tuning to enhance the crystallinity of 2D-covalent organic frameworks for visible-light-driven hydrogen generation DOI
Ahmed M. Elewa, Ahmed F. M. EL‐Mahdy, Ahmed E. Hassan

et al.

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(23), P. 12378 - 12390

Published: Jan. 1, 2022

The higher the polarity or hydrogen bond donor ability of solvent, more easily COFs crystallize, and COF crystallization, photocatalytic H 2 evolution.

Language: Английский

Citations

67

Highly stable β-ketoenamine-based covalent organic frameworks (COFs): synthesis and optoelectrical applications DOI Creative Commons
Yaqin Li, Maosong Liu, Jinjun Wu

et al.

Frontiers of Optoelectronics, Journal Year: 2022, Volume and Issue: 15(1)

Published: Sept. 19, 2022

Abstract Covalent organic frameworks (COFs) are one class of porous materials with permanent porosity and regular channels, have a covalent bond structure. Due to their interesting characteristics, COFs exhibited diverse potential applications in many fields. However, some require the possess high structural stability, excellent crystallinity, suitable pore size. based on β-ketoenamine imines prepared through irreversible enol-to-keto tautomerization. These crystallinity exhibit stability boiling water, strong resistance acids bases, resulting various possible applications. In this review, we first summarize preparation methods for β-ketoenamine, form powders, films foams. Then, effects different synthetic structure analyzed compared. The relationship between structures including fluorescence sensors, energy storage, photocatalysis, electrocatalysis, batteries proton conduction carefully summarized. Finally, applications, large-scale industrial challenges future presented. Graphical

Language: Английский

Citations

50