Linkage Microenvironment Modulation in Triazine‐Based Covalent Organic Frameworks for Enhanced Photocatalytic Hydrogen Peroxide Production

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 26, 2025

Abstract Covalent organic frameworks (COFs), known for the precise tunability of molecular structures, hold significant promise photocatalytic hydrogen peroxide (H 2 O ) production. Herein, by systematically altering quinoline (QN) linkages in triazine (TA)‐based COFs via multi‐component reactions, six R‐QN‐TA‐COFs are synthesized with identical skeletons but different substituents. The fine‐tuning optoelectronic properties and local microenvironment is allowed, thereby optimizing charge separation improving interactions dissolved oxygen. Consequently, MeO‐QN‐TA‐COF customized to achieve an impressive rate H production up 7384 µmol g⁻ 1 h⁻ under air atmosphere water without any sacrificial agents, surpassing most reported COF photocatalysts. Its high stability demonstrated through five consecutive recycling experiments characterization recovered COF. reaction mechanism further investigated using a suite quenching experiments, situ spectroscopic analysis, theoretical calculations. enhanced over 2e⁻ oxygen reduction oxidation pathways. Overall, crucial role linkage modulation design solar‐driven effective

Language: Английский

Enhancing photocatalytic performance of F-doped TiO2 through the integration of small amounts of a quinoline-based covalent triazine framework

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

We present a hybrid material formed by F-TiO 2 and quinoline-based covalent triazine framework ( Quin-CTF ) with improved photocatalytic performance towards pollutant degradation in water.

Language: Английский

[2+2] Light-Driven Cycloaddition Synthesis of an Organic Polymer and Photocatalytic Activity Enhancement via Monomer Truncation

Published: Jan. 1, 2024

Language: Английский