Guo Yantong, Yang Xiaoju, Sun Ruixue, Hu Xunliang, Shu Chang, Yang Xuan, Gao Hui, Wang Xiaoyan, Tan Bien
Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, Wuhan, 430074, P. R. China.
Small. 2024 Nov;20(44):e2403743. doi: 10.1002/smll.202403743. Epub 2024 Jul 7.
Photocatalytic hydrogen peroxide production from water and oxygen offers a clean and sustainable alternative to the conventional energy-intensive anthraquinone oxidation method. Compared to powdered covalent triazine frameworks (CTFs), the film morphology of CTFs provides better connectivity in 2D, yielding several advantages: more efficient connections between active sites, reduced electron-hole pair recombination, increased resistance to superoxide radical induced corrosion, and decreased light scattering. Leveraging these benefits, it has incorporated dual active sites for both the oxygen reduction reaction (ORR) and the water oxidation reaction (WOR) into a CTF film system. This dual-active CTF film demonstrated an exceptional hydrogen peroxide production rate of 19 460 µmol h⁻¹ m⁻ after 1 h and 17 830 µmol h⁻¹ m⁻ after 5 h under visible light irradiation (≥420 nm) without the need for sacrificial agents.
通过水和氧气光催化产生过氧化氢为传统的能源密集型蒽醌氧化法提供了一种清洁且可持续的替代方案。与粉末状共价三嗪框架（CTF）相比，CTF的薄膜形态在二维空间中提供了更好的连通性，具有以下几个优点：活性位点之间的连接更高效、电子 - 空穴对复合减少、对超氧自由基诱导腐蚀的抗性增加以及光散射减少。利用这些优势，它将氧还原反应（ORR）和水氧化反应（WOR）的双活性位点整合到一个CTF薄膜体系中。这种双活性CTF薄膜在可见光（≥420 nm）照射下，无需牺牲剂，1小时后过氧化氢产率高达19460 μmol h⁻¹ m⁻，5小时后为17830 μmol h⁻¹ m⁻。
