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A new significant feature of a triazine-based covalent organic polymer electrocatalyst is demonstrated. The metal-free electrocatalyst has dual-active sites, which enable it to entangle oxygen a push-pull interaction that plays a crucial role in promoting the oxygen reduction reaction.
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http://dx.doi.org/10.1039/d2cc00865c | DOI Listing |
J Colloid Interface Sci
August 2025
Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China; Chemistry Department, Faculty of Science, Fayoum University, Fayoum 63514, Egypt. Electronic address:
Post-synthetic modification (PSM) offers a promising approach for tailoring the compositional, structural, and electronic properties of covalent organic frameworks (COFs), thereby enhancing their exciton dissociation ability and facilitating charge transfer. The effectiveness of these approaches is largely compromised by the harsh conditions, complexity, and alteration of the original structure. Therefore, developing a facile yet effective PSM for modulating COFs' properties without altering the original geometry and/or structure is a challenge.
View Article and Find Full Text PDFRSC Adv
August 2025
Manipal Technologies Limited Manipal 576104 Karnataka India.
A hierarchical hybrid material (MnO@COP) with dual charge storage capabilities was created by synthesizing a triazine-based covalent organic polymer (COP) that is rich in nitrogen functionalities and integrating it with MnO nanoparticles. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), Brunauer-Emmett-Teller (BET) studies, and X-ray photoelectron spectroscopy (XPS) demonstrated a distinct architecture: MnO nanoparticles were uniformly embedded in a stable, porous COP matrix. MnO loading caused a modest decrease in surface area, but the composite still had the mesoporosity needed for quick ion diffusion.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2025
School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
The application of antibacterial photocatalytic therapy remains a great challenge due to the limitations of photocatalytic efficiency and biosafety of photocatalysts. Herein, we report an organic semiconductor catalyst featuring a unique covalent triazine framework (CTF) structure, which is entirely composed of triazine-based rings. This catalyst exhibits the lowest forbidden bandgap, full spectral absorption range, and high biosafety, achieving a record-high antibacterial activity under visible light irradiation.
View Article and Find Full Text PDFJ Colloid Interface Sci
August 2025
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300354, China. Electronic address:
The ecofriendly conversion of captured CO is crucial for global sustainable development. However, direct conversion of CO into value-added chemical feedstocks at atmospheric pressure remains challenging due to its thermodynamic stability and kinetic inertness. Herein, we report a new type of catalyst with low catalytic energy barrier, synthesized by post-modifying supercritical CO-activated imine-linked triazine-based covalent organic framework (TAPT-COF) through the covalent attachment of ionic liquid (IL) and coordination of Zn ion within its pores.
View Article and Find Full Text PDFSci Rep
August 2025
Department of Organic Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 6517838683, Iran.
MOF@COF hybrid materials are precursors for producing metal-free N-doped carbon materials-based catalysts. This work is allocated to the production of nitrogen-doped mesoporous carbon from a metal-organic framework (MOF, named Zn-MOF-74), with modification of triazine-based covalent-organic frameworks (TriCF) via high-temperature pyrolysis. The obtained porous N-rich carbon materials provided rich active sites for the esterification of purslane oil.
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