4.8 Article

Covalent Organic Frameworks Containing Dual O2 Reduction Centers for Overall Photosynthetic Hydrogen Peroxide Production

Related references

Note: Only part of the references are listed.
Review Chemistry, Inorganic & Nuclear

Covalent organic frameworks for photocatalysis: Synthesis, structural features, fundamentals and performance

Yun-Nan Gong et al.

Summary: This review summarizes the synthesis methods, structural features, and photocatalytic applications of covalent organic frameworks (COFs). Strategies for improving photocatalytic performance and future challenges and prospects are also discussed.

COORDINATION CHEMISTRY REVIEWS (2023)

Article Chemistry, Multidisciplinary

Local Spatial Polarization Induced Efficient Charge Separation of Squaraine-Linked COF for Enhanced Photocatalytic Performance

Haijie Ben et al.

Summary: Local charge polarization induced by intrinsic zwitterionic resonance structure effectively redistributes and separates charge carriers in photocatalysts, leading to enhanced photocatalytic activities. The novel SQ-COF-1 catalyst with the largest local polarization exhibits superior visible-light-driven photocatalytic performance compared to SQ-COF-2, PDA-COF, and common polymeric carbon nitride photocatalyst. This work presents a promising protocol for engineering charge behavior to advance the design of high-performance photocatalytic materials in the future.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Chemistry, Multidisciplinary

Microenvironments Enabled by Covalent Organic Framework Linkages for Modulating Active Metal Species in Photocatalytic CO2 Reduction

Shuailong Yang et al.

Summary: In this study, a nickel-modified COF was reported to enhance the photocatalytic reduction of CO2 by modifying the linkage microenvironment.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Chemistry, Multidisciplinary

Boosting O2 Reduction and H2O Dehydrogenation Kinetics: Surface N-Hydroxymethylation of g-C3N4 Photocatalysts for the Efficient Production of H2O2

Binyao Liu et al.

Summary: The study focuses on surface modification of g-C3N4 photocatalysts for efficient production of H2O2. The modified photocatalysts show over 1280% higher activity compared to pristine ones in pure water system, with impressive solar-to-chemical conversion efficiency. The introduction of -NH-CH2-OH on the g-C3N4 photocatalysts improves the H2O dehydrogenation and O-2 adsorption properties, making the reduction kinetics of O-2 to H2O2 more energetically favorable.

ADVANCED FUNCTIONAL MATERIALS (2022)

Article Chemistry, Multidisciplinary

Rational Design of Covalent Heptazine Frameworks with Spatially Separated Redox Centers for High-Efficiency Photocatalytic Hydrogen Peroxide Production

Hao Cheng et al.

Summary: This study focuses on designing new covalent heptazine frameworks with spatially separated redox centers for efficient photocatalytic production of H2O2. Both experimental and computational investigations support the critical role of this unique spatial separation feature in enhancing charge separation and achieving efficient H2O2 production. The rationally designed CHFs show a solar-to-chemical conversion efficiency of 0.78% under simulated solar irradiation, surpassing previously reported photocatalytic materials.

ADVANCED MATERIALS (2022)

Article Chemistry, Multidisciplinary

Molecularly Engineered Covalent Organic Frameworks for Hydrogen Peroxide Photosynthesis

Mingpu Kou et al.

Summary: Synthesizing H2O2 through photocatalytic approach using a bipyridine-based covalent organic framework (COF-TfpBpy) shows high efficiency in small-scale production. The resulting H2O2 solution can degrade pollutants, and the photocatalytic activity is enhanced by the protonation of the bipyridine monomer. This work demonstrates the feasibility of COF-catalyzed photosynthesis of H2O2 from water and air, and provides a foundation for wastewater treatment using photocatalytic H2O2 solution.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Multidisciplinary

Three-Dimensional Crystalline Covalent Triazine Frameworks via a Polycondensation Approach

Ruixue Sun et al.

Summary: This research reports the design and synthesis of two 3D crystalline CTFs with moderate crystallinity, relatively large surface area, and high CO2 uptake capacity. These 3D CTFs exhibit ultrastability and provide a synthetic strategy and structural basis for expanding practical applications of CTF materials.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Multidisciplinary

Unraveling the dual defect sites in graphite carbon nitride for ultra-high photocatalytic H2O2 evolution

Xu Zhang et al.

Summary: Defect engineering modified graphite carbon nitride (g-C3N4) with dual defect sites, -C N groups and N vacancies, has been found to significantly enhance the photocatalytic production of H2O2. The dual defect sites form an electron-rich structure and lead to a more localized charge density distribution, which improves light absorption, carrier separation, selectivity, and activity of H2O2 generation. The N vacancies effectively adsorb and activate O-2, while the -C N groups facilitate the adsorption of H+, synergistically promoting H2O2 generation. The modified g-C3N4 achieved a high H2O2 generation rate and apparent quantum efficiency, surpassing previously reported g-C3N4-based photocatalysts.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

Article Chemistry, Physical

N-Rich 2D Heptazine Covalent Organic Frameworks as Efficient Metal-Free Photocatalysts

Dan Chen et al.

Summary: This study successfully synthesized two highly ordered N-rich COFs by designing a novel heptazine monomer and condensing it with aromatic amines, one of which showed significantly enhanced photocatalytic performance under mild conditions compared to the pristine photocatalyst.

ACS CATALYSIS (2022)

Article Chemistry, Multidisciplinary

Polarization Engineering of Covalent Triazine Frameworks for Highly Efficient Photosynthesis of Hydrogen Peroxide from Molecular Oxygen and Water

Chongbei Wu et al.

Summary: In this study, a polarization engineering strategy was used to enhance the two-electron oxygen photoreduction to hydrogen peroxide by grafting (thio)urea functional groups onto covalent triazine frameworks. The functionalized framework showed significantly improved charge separation/transport and proton transfer, leading to a substantially higher production rate of hydrogen peroxide compared to the unfunctionalized framework. This approach provides a new direction for the development of efficient metal-free polymer-based photocatalysts.

ADVANCED MATERIALS (2022)

Review Chemistry, Multidisciplinary

Solar Energy Catalysis

Xiaodong Sun et al.

Summary: Solar energy catalysis is an important method for promoting chemical reactions, utilizing sunlight as an energy source through different energy-transfer pathways. In this article, we provide a specific definition for solar energy catalysis and highlight different types of solar energy catalysis, as well as discussing their limitations and future research directions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Multidisciplinary

A Crystalline Partially Fluorinated Triazine Covalent Organic Framework for Efficient Photosynthesis of Hydrogen Peroxide

Haozhen Wang et al.

Summary: The TF50-COF catalyst, a partially fluorinated, metal-free, imine-linked two-dimensional triazine covalent organic framework, demonstrates high selectivity and stability in O-2 photoreduction into H2O2. By varying the proportion of fluorine substitution, the catalyst maximizes interlayer interactions, improves crystallinity, accelerates carrier transfer, and enhances photostability. The catalyst achieves a high H2O2 yield rate of 1739 mu mol h(-1) g(-1) and an apparent quantum efficiency of 5.1 % at 400 nm, surpassing the performance of previously reported nonmetal COF-based photocatalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Physical

Reaction Pathways toward Sustainable Photosynthesis of Hydrogen Peroxide by Polymer Photocatalysts

Hao Cheng et al.

Summary: Harnessing solar energy for artificial photosynthesis to produce H2O2 has gained attention. Organic polymers show promise as materials for solar-driven H2O2 production due to their diverse molecular building blocks and bond-forming reactions. Understanding the reaction pathways is crucial for optimizing the efficiency of solar-driven H2O2 production.

CHEMISTRY OF MATERIALS (2022)

Article Chemistry, Physical

Constructing Synergistic Triazine and Acetylene Cores in Fully Conjugated Covalent Organic Frameworks for Cascade Photocatalytic H2O2 Production

Lipeng Zhai et al.

Summary: Covalent organic frameworks (COFs) are a suitable template for photocatalytic H2O2 synthesis due to their tunable chemical structures and semiconductor properties. However, the photoactivity of COFs is still suboptimal due to inefficient charge generation, fast recombination of photogenerated charges, and limited electron transport. In this study, triazine and acetylene units were integrated into COFs, leading to efficient charge separation, suppressed charge recombination, and enhanced electron transport. Experimental and computational results demonstrated that triazine and acetylene units synergistically promoted H2O2 synthesis through a two-electron pathway.

CHEMISTRY OF MATERIALS (2022)

Article Chemistry, Multidisciplinary

Accelerated Synthesis and Discovery of Covalent Organic Framework Photocatalysts for Hydrogen Peroxide Production

Wei Zhao et al.

Summary: A high-throughput sonochemical synthesis and testing strategy was developed to discover covalent organic frameworks (COFs) for photocatalysis. Among the screened COFs, one showed excellent photocatalytic activity for hydrogen peroxide production, but its activity decreased after long-term testing. The introduction of a two-phase catalytic system greatly enhanced its photostability.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

Article Chemistry, Multidisciplinary

Calcination-regulated Microstructures of Donor-Acceptor Polymers towards Enhanced and Stable Photocatalytic H2O2 Production in Pure Water

Chao Yang et al.

Summary: A porous nanorod-like D-A polymer is synthesized through supramolecular chemistry and subsequent calcination treatment. The regulation of molecular structure enhances the photoactivity of the polymer and enables efficient and stable photocatalytic H2O2 production.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Physical

Boosting exciton dissociation by regulating dielectric constant in covalent organic framework for photocatalysis

Guoqing Li et al.

Summary: Polymer semiconductor photocatalysts often face the issue of high exciton binding energy due to their low dielectric constant. This study used two crystalline polymer photocatalyst prototypes, neutral covalent organic framework (COF) and ionic covalent organic framework (iCOF), to investigate the exciton effect. By polarizing the iCOF with high dipole moment, the dielectric constant is greatly increased, leading to a lower exciton binding energy. This results in enhanced photocatalytic activity, as demonstrated by the significantly higher hydrogen peroxide production rate compared to the neutral COF under identical conditions. The findings highlight the potential of tuning the dielectric properties of polymer photocatalysts to regulate the exciton effect and improve photocatalytic behavior.

CHEM CATALYSIS (2022)

Review Chemistry, Multidisciplinary

State of the Art in the Preparation and Properties of Molecular Monomeric s-Heptazines: Syntheses, Characteristics, and Functional Applications

Pierre Audebert et al.

Summary: The field of monomeric heptazines is emerging and possibly heading towards maturity, diverging from the area of polymeric carbon nitrides. Starting from well-defined molecules allows a versatility of approaches and wide tunability of expected properties, making it likely to quickly surge to the forefront of the search for active organic molecules.

CHEMICAL REVIEWS (2021)

Article Chemistry, Physical

Interfacial Engineering for Improved Photocatalysis in a Charge Storing 2D Carbon Nitride: Melamine Functionalized Poly(heptazine imide)

Julia Kroeger et al.

Summary: This study reports the first postsynthetic modification of 2D carbon nitride poly(heptazine imide) using terminal melamine moieties. The covalent attachment of these groups improves the colloidal stability and photocatalytic performance of the catalyst particles.

ADVANCED ENERGY MATERIALS (2021)

Article Chemistry, Multidisciplinary

Linear Conjugated Polymers for Solar-Driven Hydrogen Peroxide Production: The Importance of Catalyst Stability

Lunjie Liu et al.

Summary: Conjugated organic materials have been studied as photocatalysts for solar fuels synthesis, with DE7 polymer discovered as an efficient catalyst for H2O2 production. Focus is needed on improving the photostability and initial catalytic production rates of organic photocatalysts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Chemistry, Multidisciplinary

Covalent organic frameworks: Design, synthesis, and performance for photocatalytic applications

Hao Li et al.

Summary: COFs, composed of light elements, have gained significant attention due to their excellent physiochemical properties, making them suitable for applications in photocatalytic conditions.

NANO TODAY (2021)

Article Chemistry, Multidisciplinary

Simultaneously Tuning Band Structure and Oxygen Reduction Pathway toward High-Efficient Photocatalytic Hydrogen Peroxide Production Using Cyano-Rich Graphitic Carbon Nitride

Lei Chen et al.

Summary: A novel composite photocatalyst of cyano-rich graphitic carbon nitride g-C3N4 was successfully fabricated by sodium chloride-assisted calcination on dicyandiamide. The obtained photocatalysts exhibited superior activity and selectivity for H2O2 production, showing great potential for practical applications in environmental remediation and energy supply.

ADVANCED FUNCTIONAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Polythiophene-Doped Resorcinol-Formaldehyde Resin Photocatalysts for Solar-to-Hydrogen Peroxide Energy Conversion

Yasuhiro Shiraishi et al.

Summary: The study reports that RF resin powders doped with P3HT exhibit enhanced photocatalytic activities, leading to increased efficiency in H2O2 generation through enhanced charge separation.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Polymer Science

Introducing Secondary Acceptors into Conjugated Polymers to Improve Photocatalytic Hydrogen Evolution

Chenglong Ru et al.

Summary: This study presents an effective strategy for enhancing the photocatalytic hydrogen evolution of conjugated polymers by introducing secondary acceptor units into their repeating units, which promotes the separation and transport of photogenerated charge carriers.

MACROMOLECULES (2021)

Review Chemistry, Multidisciplinary

Recent advances on electrochemical methods in fabricating two-dimensional organic-ligand-containing frameworks

Xiang Wang et al.

Summary: Electrochemical processing has been proven as an efficient, safe, and convenient method for the large-scale and highly controllable production of organic-ligand-containing frameworks. This review comprehensively summarizes the progress and challenges in the crystallization and thin film fabrication of these frameworks.

SMARTMAT (2021)

Article Chemistry, Physical

Atomically dispersed antimony on carbon nitride for the artificial photosynthesis of hydrogen peroxide

Zhenyuan Teng et al.

Summary: Artificial photosynthesis is a promising strategy for producing environmentally friendly oxidants and clean fuels. A carbon nitride-supported antimony single atom photocatalyst has been developed for efficient synthesis of H2O2 under visible light irradiation.

NATURE CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Perspective towards atomic-resolution imaging of two-dimensional polymers

Haoyuan Qi et al.

Summary: In recent years, there has been a growing interest in the synthesis of 2D polymers, with significant challenges remaining in structural characterization despite advancements in synthetic methodologies. Scientists are currently exploring strategies to mitigate electron radiation damage in order to achieve AC-HRTEM imaging of 2D polymers at the atomic scale.

SMARTMAT (2021)

Review Chemistry, Multidisciplinary

Production of Hydrogen Peroxide by Photocatalytic Processes

Huilin Hou et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Multidisciplinary

Amidation, Esterification, and Thioesterification of a Carboxyl-Functionalized Covalent Organic Framework

Lei Guo et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Multidisciplinary

A Simple Molecular Design Strategy for Two-Dimensional Covalent Organic Framework Capable of Visible-Light-Driven Water Splitting

Yangyang Wan et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Review Chemistry, Physical

Covalent organic frameworks for photocatalytic applications

Qing Yang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Article Chemistry, Multidisciplinary

Construction of Covalent Organic Frameworks via Three-Component One-Pot Strecker and Povarov Reactions

Xue-Tian Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Review Chemistry, Multidisciplinary

Recent Advances in Conjugated Polymers for Visible-Light-Driven Water Splitting

Chengxiao Zhao et al.

ADVANCED MATERIALS (2020)

Article Chemistry, Multidisciplinary

Modulating Benzothiadiazole-Based Covalent Organic Frameworks via Halogenation for Enhanced Photocatalytic Water Splitting

Weiben Chen et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Review Chemistry, Multidisciplinary

Excitonic Effects in Polymeric Photocatalysts

Hui Wang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Multidisciplinary

Vinylene-Linked Covalent Organic Frameworks (COFs) with Symmetry-Tuned Polarity and Photocatalytic Activity

Junsong Xu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Multidisciplinary

Strongly Reducing (Diarylamino)benzene-Based Covalent Organic Framework for Metal-Free Visible Light Photocatalytic H2O2 Generation

Chidharth Krishnaraj et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Review Chemistry, Multidisciplinary

A comparative perspective of electrochemical and photochemical approaches for catalytic H2O2 production

Yanyan Sun et al.

CHEMICAL SOCIETY REVIEWS (2020)

Review Chemistry, Multidisciplinary

Covalent organic framework photocatalysts: structures and applications

Han Wang et al.

CHEMICAL SOCIETY REVIEWS (2020)

Article Chemistry, Multidisciplinary

Designed Synthesis of a 2D Porphyrin-Based sp2 Carbon-Conjugated Covalent Organic Framework for Heterogeneous Photocatalysis

Rufan Chen et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Chemistry, Physical

Hydrogen Peroxide Production from Solar Water Oxidation

Jiali Liu et al.

ACS ENERGY LETTERS (2019)

Article Chemistry, Multidisciplinary

Fast Photoelectron Transfer in (Cring)-C3N4 Plane Heterostructural Nanosheets for Overall Water Splitting

Wei Che et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Multidisciplinary

Phenyl-triazine oligomers for light-driven hydrogen evolution

K. Schwinghammer et al.

ENERGY & ENVIRONMENTAL SCIENCE (2015)

Article Multidisciplinary Sciences

Porous aromatic frameworks with anion-templated pore apertures serving as polymeric sieves

Ye Yuan et al.

NATURE COMMUNICATIONS (2014)

Review Chemistry, Multidisciplinary

Hydrogen peroxide synthesis: An outlook beyond the anthraquinone process

Jose M. Campos-Martin et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2006)