Photocatalytic detoxification of a sulfur mustard simulant by donor-enhanced porphyrin-based Covalent-Organic Frameworks

Nanoscale, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Porphyrin-based COF-OMe with a strong electron-donating group exhibited the highest photocatalytic activity among three COFs for detoxification of CEES in methanol solvent.

Язык: Английский

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A Thienothiophene-Based Olefin-Linked Covalent Organic Framework for the Metal-Free Photocatalytic Oxidative Coupling of Amines

ACS Macro Letters, Год журнала: 2025, Номер unknown, С. 278 - 283

Опубликована: Фев. 15, 2025

The oxidative coupling of amines is a useful way to prepare many diverse compounds for the pharmaceutical and chemical industries. Covalent organic frameworks (COFs), crystalline class porous polymers, have emerged as promising heterogeneous photocatalysts that can accomplish this transformation under metal-free conditions due their excellent photochemical stability tunable electronic properties. Herein, we report optoelectronic photocatalytic properties an olefin-linked COF containing thienothiophene (TT) 2,4,6-trimethyl-1,3,5-triazine (TMT) units. TT-TMT-COF exhibited narrow band gap with extended light absorption charge separation, making it various benzylamines. fast reaction times, recyclability, conversions high ∼99%. reactivity was on par or significantly better than few small molecule 2,4,6-tris((E)-2-(thieno[3,2-b]thiophen-2-yl)vinyl)-1,3,5-triazine (TT-TMT) 2,4,6-tris((E)-2-(thiophen-2-yl)vinyl)-1,3,5-triazine (Thio-TMT) homogeneous catalytic systems similar functional This work further highlights ability perform efficient transformations in sustainable manner.

Язык: Английский

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An Alkynyl-Based Olefin-linked Covalent Organic Framework as an Anode Material for Potassium-ion Batteries

Polymer, Год журнала: 2025, Номер unknown, С. 128453 - 128453

Опубликована: Апрель 1, 2025

Язык: Английский

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Visible-Light-Driven Photocatalytic Carbon–Carbon Coupling Reaction under Atmospheric Temperature and Pressure Conditions Using Hybrid Cu₂O–Pd Nanostructures

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Metal-catalyzed carbon-carbon (C-C) coupling reactions are important in the chemical industry. These conventionally carried out through fossil-fuel-derived heat-driven high-temperature catalytic processes. In this contribution, we report that Pd nanoclusters decorated on surface of quasi-spherical Cu2O (i.e., Cu2O-Pd) nanoparticles can successfully photocatalyze C-C reaction under ambient temperature and pressure conditions. Oxidative homocoupling phenylacetylene into diphenyl diacetylene is used as probe reaction. Based our results from transient reflection, density functional theory calculations, photoreactor studies, propose photocatalytic mechanism involves photon-excited electron transfer subsequent activation molecules by these excited electrons nanoclusters. The visible-light-driven approach demonstrated herein decarbonize processes industry since visible light input be supplied renewable energy resources.

Язык: Английский

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A guanidinium-based ionic COF for selective and efficient capture of 99TcO4−: A synergistic effect of ion exchange and hydrogen bond

Separation and Purification Technology, Год журнала: 2024, Номер 359, С. 130841 - 130841

Опубликована: Ноя. 29, 2024

Язык: Английский

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