一种用于增强光催化析氢的高结晶性基于苝的氢键有机框架。

A High Crystalline Perylene-Based Hydrogen-Bonded Organic Framework for Enhanced Photocatalytic HO Evolution.

作者信息

Hu Mengke, Wu Chenxi, Feng Shufan, Hua Jianli

机构信息

Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.

出版信息

Molecules. 2023 Sep 28;28(19):6850. doi: 10.3390/molecules28196850.

Hydrogen-bonded organic frameworks (HOFs) are a kind of crystalline porous material that have shown great potential for photocatalysis on account of their mild synthesis conditions and high crystallinity. Perylene-based photocatalysts have great potential for photocatalytic HO production due to their excellent photochemical stability and broad spectral absorption. In this work, we designed and synthesized a high crystalline perylene-based HOF (PTBA) and an amorphous analog sample PTPA for photocatalytic HO evolution. Under visible light irradiation, PTBA shows a higher photocatalytic HO production rate of 2699 μmol g h than PTPA (2176 μmol g h) and an apparent quantum yield (AQY) of 2.96% at 500 nm. The enhanced photocatalytic performance of PTBA is attributed to the promotion of the separation and transfer of photocarriers due to its high crystallinity. This work provides a precedent for the application of HOFs in the field of photocatalytic HO generation.

氢键有机框架（HOFs）是一类晶体多孔材料，由于其温和的合成条件和高结晶度，在光催化方面显示出巨大潜力。基于苝的光催化剂因其优异的光化学稳定性和宽光谱吸收，在光催化产氢方面具有巨大潜力。在这项工作中，我们设计并合成了一种用于光催化析氢的高结晶度苝基HOF（PTBA）和一种非晶态类似物样品PTPA。在可见光照射下，PTBA的光催化产氢速率为2699 μmol g h，高于PTPA（2176 μmol g h），在500 nm处的表观量子产率（AQY）为2.96%。PTBA光催化性能的增强归因于其高结晶度促进了光生载流子的分离和转移。这项工作为HOFs在光催化产氢领域的应用提供了先例。