Related references
Note: Only part of the references are listed.
Article
Chemistry, Physical
Di Meng et al.
Summary: Cross-coupling by dual metal/photoredox catalysis has been achieved using imine-based hexagonal covalent organic frameworks as photoredox platforms in combination with a molecular Ni catalyst. The catalytic performance can be effectively modulated by varying the symmetry of the molecular subunits, resulting in up to one magnitude difference in the solar-to-coupling product conversion efficiency.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xin Guo et al.
Summary: By using surface CeO2-decoration strategy, the surface electron distribution of bimetallic phosphides can be regulated to enhance their alkaline hydrogen evolution reaction (HER) activity. CeO2-NiCoP exhibits significantly enhanced HER catalytic activity with low overpotentials of 84, 202 and 242 mV at the current densities of 10, 500 and 1000 mA cm-2, respectively, much lower than those of NiCoP counterparts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Jiangyao Chen et al.
Summary: The photocatalytic ozonation of n-hexane isomers (2-methypentane, 3-methylpentane, and 2,3-dimethylbutane) on Cu2O-CuO/TiO2-foam ceramic was investigated. The study found that 2-methyl-pentane and 3-methylpentane showed higher degradation efficiency and converted to heterocyclic compounds. Optimum conditions and center dot OH demonstrated significant roles in the heterocyclic compound formation. The findings contribute to a comprehensive understanding of the roles of ROS in heterocyclization reactions and provide insights for the elimination of industrial alkanes.
Article
Chemistry, Physical
Rongchen Shen et al.
Summary: Covalent organic frameworks (COFs) have attracted significant interest in the field of photocatalytic hydrogen evolution due to their well-defined structures and tailor-made function. However, the excitonic effects resulting from Coulomb interactions are often overlooked, which are crucial for the rate-determining processes. Therefore, it is important and challenging to explore new routes for modulating excitonic dissociation in COFs for enhancing photocatalysis.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Applied
Xin Zhang et al.
Summary: Through a defect-induced heterojunction constructing strategy, Ni4Mo alloys were grown on sulfur vacancies-rich ZCS via interfacial Ni-S covalent bonds, resulting in enhanced photocatalytic hydrogen evolution rate and stability. The unsaturated sulfur atoms induced by sulfur vacancies facilitate the anchoring of Ni-Mo nanoparticles and the formation of abundant Ni-S covalent bonds, enabling efficient photoelectron transfer and activation of water molecules. The optimized Ni4Mo/Sv-ZCS composite exhibits significantly higher PHE rate compared to Pt/ZCS and Ni4Mo/ZCS, indicating the potential of constructing sulfur vacancies and covalent bonds as an electron bridge to enhance PHE activity.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Xue Ren et al.
Summary: Gamma-phase Ni-Co oxyhydroxides with cationic vacancy defects and crystalline-amorphous interfaces are synthesized successfully via electrochemical reconstruction to achieve an ultrahigh mass/areal/volumetric energy density, flexible all-solid-state asymmetric supercapacitor (ASC). The as-obtained gamma-phase Ni-Co oxyhydroxides display a high capacitance and excellent rate characteristics. Density functional theory calculations reveal that Ni-Co oxyhydroxides with cationic vacancies can increase the adsorption energy of H2O, which is beneficial for subsequent charge storage reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
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)
Review
Chemistry, Multidisciplinary
Zhenwei Zhang et al.
Summary: This review systematically presents the recent advances in porous organic polymers (POPs) for visible-light driven organic transformations. The common construction strategies for POP-based photocatalysts are summarized, and the synthesis methods and organic reaction types for constructing various types of POPs are categorized and summarized. The specific reactions of current light-driven POP-mediated organic transformations are classified and introduced. The current state of development and the problems faced in light-driven organic transformations by POPs are outlined, and some perspectives are presented to motivate exploration of solutions to these problems and confront the present challenges in the development process.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Hui Li et al.
Summary: Designing visible light photocatalysts with a metal oxide semiconductor as the starting material expands the possibilities for solar energy conversion and storage. In this study, TiO2 was used as the benchmark photocatalyst and aromatic acids were anchored to it. By strategically extending the aromatic acids, TiO2 complexes were designed for violet light-induced selective aerobic oxidation of sulfide. The introduction of triethylamine maintained the integrity of the anchored aromatic acids. The pi-conjugation of the aromatic acid ligand directly correlated with the selective aerobic oxidation of sulfides, and 2-anthracene acid showed the best performance over TiO2 due to its extensive pi-conjugated system.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zhi-Bei Zhou et al.
Summary: Amide-linked covalent organic frameworks (amide COFs) have great potential in practical applications due to their high stability and polyamide structures. However, their accessibility is limited. In this study, a new linkage conversion method using KHSO5 as an oxidant was developed to rapidly synthesize crystalline amide COFs under mild conditions. This approach is general, facile, efficient, and scalable, allowing for easy production of amide COFs from widely available imine-linked COFs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
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.
Article
Chemistry, Physical
Fulin Zhang et al.
Summary: This study focuses on the development of olefin-linked covalent organic frameworks (COFs) in visible light photocatalysis. Two olefin-linked COFs with different morphologies were synthesized and their photocatalytic performance and stability were compared.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Xia Li et al.
Summary: 2D covalent organic frameworks (COFs) have recently shown promise as versatile photoactive functional materials. In this study, three 8-ketoenamine linked 2D COFs were successfully assembled, with Tp-BTD-25 exhibiting superior activity for photocatalytic oxidation reactions at lower temperature. The addition of TEMPO enhanced both stability and activity of the photocatalyst.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Lei Wang et al.
Summary: By covalently modifying metal-free graphic carbon nitride with a 2D Schiff-base covalent organic framework, the photoelectrical characteristics and photocatalytic water-splitting efficiency were significantly improved. This modulation strategy at the molecular level provides a new opportunity for constructing carbon nitride based hybrids and regulating their photoelectric behaviors.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Ying Liang et al.
Summary: COF-Tr-BA, synthesized from COF-Tr and boronic acid, shows excellent selective adsorption performance and great electrochemical property as the sulfur host for Li-S battery, effectively alleviating the dissolution and shuttle effect of polysulfides.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zhenwu Lu et al.
Summary: The reversibility of imine bonds in COFs can be locked through the asymmetric hydrophosphonylation reaction, resulting in improved chemical and thermal stabilities, as well as intrinsic proton conductivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
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
Sizhuo Yang et al.
Summary: Covalent organic frameworks (COFs) have shown great potential for various advanced applications due to their unique structure. Researchers have developed a synthetic approach that introduces nitrogen-containing heterocycles into COFs, leading to the introduction of new functionalities. This general strategy opens up possibilities for a broader range of functional porous crystalline materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Yajun Zou et al.
Summary: Chromoselective photocatalysis utilizes sensitizers to convert photon energy into redox potential, allowing for the selection of a specific reaction pathway. In this study, the authors designed two-dimensional amorphous covalent triazine-based frameworks with strong red edge effect for efficient charge separation and photocatalytic bromination reactions.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Yongliang Yang et al.
Summary: Covalent linkages are crucial for covalent organic frameworks (COFs). This study focuses on the synthesis of crystalline and ultrastable 4-carboxyl-quinoline linked COFs via Doebner reactions using both one-pot and post-synthetic modification methods. The authors demonstrate the application of these COFs in nanofiltration, showing desirable separation capacity, high water permeance, and tolerance of extreme conditions. This work opens up new possibilities for constructing robust and functional COFs materials for practical applications.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Meng-Hao Li et al.
Summary: Covalent organic frameworks (COFs) are emerging porous materials with tailor-made functionalities for improved photocatalytic activity. This study reports a covalent hybridization approach of integrating rigid macrocyclic struts (pillararenes) into the extended network of COFs, leading to enhanced photochemical performance. It provides a new strategy for constructing macrocycle-derived COFs and demonstrates their potential in efficient catalytic reactions.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Guodong Pan et al.
Summary: A hydration-initiated pathway of photocatalytic water oxidation over covalent organic frameworks (COFs) is proposed, where the hydration of water addition to the hydrazone unit efficiently induces the initial step of photocatalytic water oxidation. The subsequent oxidative deprotonation and the coupling of the bonded hydroxyl radicals selectively yield H2O2. This study provides a mechanistic insight into water oxidation over COFs.
Article
Chemistry, Physical
Wan-Kai An et al.
Summary: Covalent organic framework (COF) is a new platform for developing efficient and environmentally friendly heterogeneous photocatalysts. This research focuses on constructing benzofuran-embedded COFs (BF-COFs) with solvent tolerance and exploring their application in photoredox reactions. The BF-COFs exhibit favorable properties for visible light response and efficient separation of photogenerated charges, enabling the promotion of C-S bond formation and the synthesis of chiral olefins and chiral amino thiazoles.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Manyi Gao et al.
Summary: This study reports a Pt@PtSAs co-catalyst on polymeric carbon nitride nanosheets, which exhibits mutual-modification effect and enhances catalytic activity and photocatalytic H2 generation rate.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yucheng Wang et al.
Summary: A facile strategy was reported to transform COFs into porous aromatic frameworks, resulting in materials with excellent oil adsorption and separation performance, as well as selective C2H2 adsorption.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Hong-Yi Yu et al.
Summary: This study synthesized an ultrastable 2D COF with undulated lattice structure, which effectively prevents stacking dislocation, prolongs the lifetime of donor/acceptor pi-columnar arrays, and facilitates the transport of charge carriers. The results demonstrate that this COF exhibits significantly superior activity in various photocatalytic systems compared to its planar counterpart.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yong Zhang et al.
Summary: By fabricating a step-scheme heterojunction ZnO/COF(TpPa-Cl), the photocatalytic H2O2 production rate was increased, providing design guidelines for constructing other COF-based S-scheme heterojunctions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Cheng-Juan Wu et al.
Summary: This study reports the first-ever synthesis of COF using natural sunlight and demonstrates its application as a reusable photocatalyst for promoting light-driven oxidation reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Wenlong Sheng et al.
Summary: Metal-organic frameworks (MOFs) with abundant mesopores and accessible hydroxyl binding sites were synthesized and integrated with a redox mediator to achieve cooperative photocatalytic selective oxidation of sulfides. The covalent integration of the redox mediator into the MOF proved to be essential for the effectiveness and durance of the reaction.
Article
Chemistry, Multidisciplinary
Qiuxia Liu et al.
Summary: This study developed an Au@Co3O4 core-shell nanocomposite catalyst that exhibited efficient catalytic and photocatalytic oxidation of formaldehyde at room temperature. The research provides evidence for understanding the catalytic mechanism of photocatalytic degradation of formaldehyde and lays the foundation for the rational design of catalysts for efficient indoor formaldehyde elimination.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Chemistry, Physical
Yanan Feng et al.
Summary: In this study, protective COF shells were grown on the surface of functionalized CdS nanorods to form CdS@COF core-shell heterojunctions for high-performance photocatalytic H2 evolution. The CdS@TTI-COF-60 heterostructures showed the highest H2 production activity under visible light without a cocatalyst.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Chemistry, Multidisciplinary
Yunchao Ma et al.
Summary: In this study, a metal-free sulfur-containing covalent organic framework material (JLNU-300) was designed and synthesized for electrocatalytic hydrogen evolution reaction (HER) in alkaline solution. The results showed that JLNU-300 had high crystallinity and specific surface area, and exhibited high HER activity. The introduction of thiophene groups and the high crystallinity and specific surface area of COF increased the effective contact area between reactants and active points, promoting the HER process.
Article
Chemistry, Physical
Bang Wu et al.
Summary: Conjugated porous organic polymers offer great potential for photocatalytic applications due to their versatile designability and tunability. This study focuses on fine-tuning the band structures of covalent triazine frameworks (CTFs) by introducing various electron-donating units into their polymeric skeletons. The newly designed CTF containing the phenothiazine moiety exhibits extended absorption in the visible light region and enhanced charge separation/transfer efficiency, resulting in significantly improved photocatalytic performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Review
Chemistry, Multidisciplinary
Luca Cusin et al.
Summary: Imine-based COFs are functional, crystalline, and porous nanostructures with relatively easy crystallization, but the stability of the imine bond is limited, making it unsuitable for harsh conditions. Solutions are needed to increase the potential of these materials, potentially through chemical conversion and locking of the imine bond to enhance framework robustness and functionality.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Wenqian Li et al.
Summary: The 2D covalent organic framework PyTz-COF shows exceptional optoelectronic properties, photocatalytic ability, and photoelectrochemical activity, making it suitable for solar energy harvesting and conversion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Huimin Hao et al.
Summary: Triazine-based materials like g-C3N4, CTF-1, and TP-COF show promise for visible light photocatalytic activation of O-2. TP-COF exhibits the best photocatalytic performance due to its large specific surface area, suitable bandgap, and superior charge transfer properties, enabling efficient conversion of organic sulfides under blue light.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Sangni Xun et al.
Summary: Efforts are being made to improve the stability and crystallinity of imine-based two-dimensional covalent organic frameworks for various potential applications; the relative orientations of imine bonds are crucial for stacking, isomeric structure formation, and crystallinity of the final product; while most studies focus on structural properties, the impact of imine orientations on electronic properties has not been systematically studied.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Lars Grunenberg et al.
Summary: Covalent organic frameworks with amine linkages can be directly accessed using a novel synthetic strategy, enabling further postsynthetic functionalization for increased hydrolytic stability and potential use as heterogeneous catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Multidisciplinary Sciences
Rufan Chen et al.
Summary: Covalent organic frameworks show promise in photocatalytic hydrogen generation from water, with the incorporation of different transition metals allowing for tuning of the hydrogen evolution rate.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Ratul Paul et al.
Summary: The study reported two benzothiazole-linked covalent organic framework nanostructures prepared through a highly efficient synthetic strategy, demonstrating high crystallinity, large surface area, chemical stability, light-harvesting capacity, and high functional group tolerance in visible-light-assisted carbon-boron bond cleavage. In-depth understanding of the mechanistic pathway and comparison in photocatalytic performance were achieved through in situ electron paramagnetic resonance studies, highlighting the potential application of elemental sulfur in extended pi-conjugation network-based photocatalysts.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Vikram Singh et al.
Summary: This study demonstrates that the design of linkages in COFs is crucial for stabilizing the redox reaction, showing the basic principles for building high-performance COF electrodes.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jin Yang et al.
Summary: The study demonstrates that protonation of imine-linked COFs can enhance photocatalytic performance, resulting in high-speed hydrogen production. This is attributed to the significant red-shift in light absorbance, improved charge separation efficiency, and increased hydrophilicity triggered by protonation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Rui-Han Xu et al.
Summary: The study presents a vinylene-linked covalent organic framework (Tp-TMT) as a uranium adsorbent, which enhances uranium adsorption through selective ligand binding, chemical reduction, and photocatalytic reduction mechanisms. Tp-TMT exhibits outstanding uranium adsorption capacity under light irradiation through synergistic effects of its unique structure and excellent photocatalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Yukun Zhao et al.
Summary: The study demonstrated that hematite can serve as a versatile and efficient oxygen atom transfer catalyst for the production of high-value chemicals.
Article
Chemistry, Multidisciplinary
Lina Ma et al.
Summary: This study presents an electrochemical protocol for the selective oxidation of sulfides to sulfoxides using a CoFe-LDH anode in an aqueous-MeCN electrolyte, coupled with enhanced H-2 productivity. The protocol demonstrates high activity, catalyst stability, and generality in selective sulfide oxidation, showing applicability in the synthesis of pharmaceutical compounds. X-ray spectroscopy investigations reveal the evolution of the CoFe-LDH material into an amorphous CoFe-oxyhydroxide under catalytic conditions. This work may lead to sustainable organic synthesis of valuable pharmaceuticals coupled with H-2 production.
Article
Chemistry, Multidisciplinary
Yuancheng Wang et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Daohao Li et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Kewei Wang et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Wei-Rong Cui et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Physical
Yongliang Yang et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Biochemistry & Molecular Biology
Francesca Mangiavacchi et al.
Article
Chemistry, Multidisciplinary
Yun-Nan Gong et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Yunyang Qan et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Alexander M. Puetz et al.
Article
Nanoscience & Nanotechnology
Chao Yang et al.
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Yongliang Yang et al.
Article
Chemistry, Multidisciplinary
Jeong-Min Seo et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Multidisciplinary
Pi-Feng Wei et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Multidisciplinary
Peter J. Waller et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Multidisciplinary Sciences
Frederik Haase et al.
NATURE COMMUNICATIONS
(2018)
Article
Chemistry, Multidisciplinary
F. Haase et al.
MATERIALS CHEMISTRY FRONTIERS
(2017)
Article
Chemistry, Multidisciplinary
Vijay S. Vyas et al.
ADVANCED MATERIALS
(2016)
Article
Energy & Fuels
Yan Jiao et al.
Article
Chemistry, Multidisciplinary
Hong Xu et al.
Article
Chemistry, Multidisciplinary
Venkata S. Pavan K. Neti et al.
