Tuning Linkage and Dimensionality in Covalent Organic Frameworks for Enhanced Photocatalytic Hydrogen Peroxide Production

IF 13.1 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2025-05-30 DOI:10.1021/acscatal.5c01328

Yingling Liao, Zitong Wang, Chenghua Deng, Zhibei Zhou, Li Shi, Wenbin Lin

引用次数: 0

Abstract

We report the synthesis of two-dimensional (2D) and three-dimensional (3D) covalent organic frameworks (COFs) for photocatalytic hydrogen peroxide (H₂O₂) production. Pyrene-based 2D COF (1) and 3D COF (2) were synthesized to investigate the effect of COF dimensionality on photocatalytic performance. By treating them with trimethyloxonium tetrafluoroborate, the imine bonds in the COFs were methylated, yielding 2D and 3D pyrene-based iminium-linked COFs 3 and 4, respectively. These COFs exhibited strong and broad visible-light absorption, significantly enhancing photocatalytic efficiency. The methylated 3D COF (4) achieved a high H₂O₂ production rate of 1839 μmol·g^–1·h^–1 and maintained its performance over multiple cycles. This work introduces a strategy for optimizing COF photocatalytic performance and highlights the potential of 3D COFs in solar energy conversion applications.

Abstract Image

查看原文本刊更多论文

用于增强光催化过氧化氢生产的共价有机框架的调整链接和维度

我们报道了二维（2D）和三维（3D）共价有机框架（COFs）用于光催化过氧化氢（H2O2）生产的合成。合成了pyrenees基二维COF(1)和三维COF(2)，研究了COF的维数对光催化性能的影响。用四氟硼酸三甲基氧鎓处理后，COFs中的亚胺键被甲基化，分别生成2D和3D芘基最小连接的COFs 3和4。这些COFs表现出强烈而广泛的可见光吸收，显著提高了光催化效率。甲基化后的3D COF(4)的H2O2产率高达1839 μmol·g-1·h-1，并在多个循环中保持了良好的性能。本文介绍了一种优化COF光催化性能的策略，并强调了3D COF在太阳能转换应用中的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.