题目： | Perfluoroalkyl-modified covalent organic frameworks for continuous photocatalytic hydrogen peroxide synthesis and extraction in a biphasic fluid system |
作者： | Chaochen Shao1,2, Xiaohan Yu1,2, Yujin Ji1,2, Jie Xu3, Yuchen Yan1,2, Yongpan Hu1,2, Youyong Li1,2, Wei Huang1,2 & Yanguang Li 1,2,4 |
单位： | 1Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 215123 Suzhou, China. 2Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, 215123 Suzhou, China. 3College of Chemistry and Materials Engineering, Wenzhou University, 325035 Wenzhou, Zhejiang, China. 4Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, 999078 Macao, China. |
摘要： | H2O2 photosynthesis represents an appealing approach for sustainable and decentralized H2O2 production. Unfortunately, current reactions are mostly carried out in laboratory-scale single-phase batch reactors, which have a limited H2O2 production rate (<100 μmol h−1) and cannot operate in an uninterrupted manner. Herein, we propose continuous H2O2 photosynthesis and extraction in a biphasic fluid system. A superhydrophobic covalent organic framework photocatalyst with perfluoroalkyl functionalization is rationally designed and prepared via the Schiff-base reaction. When applied in a home built biphasic fluid photo-reactor, the superhydrophobicity of our photocatalyst allows its selective dispersion in the oil phase, while formed H2O2 is spontaneously extracted to the water phase. Through optimizing reaction parameters, we achieve continuous H2O2 photosynthesis and extraction with an unprecedented production rate of up to 968 μmol h−1 and tunable H2O2 concentrations from 2.2 to 38.1 mM. As-obtained H2O2 solution could satisfactorily meet the general demands of household disinfection and wastewater treatments. |
影响因子： | 14.7 |
分区情况： | 一区 |
链接： | https://doi.org/10.1038/s41467-024-52405-3 责任编辑：杜欣 |