SBA-15模板化共价三嗪框架增强光催化产氢
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中图分类号：0643 doi： 10.1016/j.actphy.2025.100149
SBA-15 templated covalent triazine frameworks for boosted photocatalytic hydrogen production
Chengxiao Zhao 1， Zhaolin Li 1.2， Dongfang Wu 2*， Xiaofei Yang 1.*
1 College of Science， Nanjing Forestry University， Nanjing ， Jiangsu Province， China. ² School of Chemistry and Chemical Engineering， Southeast University， Nanjing 211189， Jiangsu Province， China.
Abstract：Covalent triazine frameworks （CTFs）represent an atractive family of metal-free visible lightresponsive covalent organic frameworks （COFs）， possessing promising characteristics such as large specific surface area，rich nitrogen content，permanent porosity，andhighthermal andchemical stabilityforphotocatalytic hydrogen production via water splitting.Nevertheless，the majority of CTFsare confronted with difficulty in chemical synthesis and generally suffer from low electric conductivity and severe photogenerated charge carrier recombination during photocatalytic hydrogen evolution reaction （HER）. The hydrogen-evolving performance highly depends on the structure of π -conjugated CTFs and the synthetic methods， and controlled synthesis of welldefined nanostructures is still highly challenging. In this work， we report the organic acid-catalyzed synthesis of porous CTF nanoarchitectures templated by mesoporous silica molecular sieve SBA-15 with a highly ordered hexagonal structure.The SBA-15-templated CTF-S2 nanorods exhibited a substantial increase in photocatalytic HER efficiency， with an impressve 14-fold enhancement compared to the micro-sized bulk CTF-1 ）This remarkable improvement in the photocatalytic HER over SBA-templated CTF-S2 nanostructure is attributed to the extended visible light absorption，accelerated charge carrier transfer and the optimized band structure.
Key Words： Photocatalysis; Hydrogen evolution reaction; Covalent organic frameworks; Template synthesis;Porous structure
1引言
具有可控孔径和氧化还原活性位点的富氮共价有机框架（COFs）因其显著的杂原子效应，已成为另一种有前景的可见光响应无金属光催化剂，用于水分解制氢反应[1-4]。（剩余15776字）
