A bifunctional wood membrane modified by MoS/covalent organic framework heterojunctions for effective solar-driven water evaporation and contaminant degradation

作     者：Ziwei Cui Jianfei Wu Haoran Li Yaning Xu Tiantian Wu Lixing Kang Qing Huang Yahui Cai Jianzhang Li Dan Tian 

作者机构：State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry University Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry University 

出 版 物：《Science China Chemistry》 (中国科学:化学(英文版))

年 卷 期：2024年

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 081705[工学-工业催化] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (22175094, 21971113, 22108125) the Independent Innovation of Agricultural Science and Technology in Jiangsu Province (CX(21)3163) the Natural Science Foundation of Jiangsu Province (BK20210627) the Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX23_1178) the Natural Science Foundation of the Jiangsu Higher Education Institutions (20KJA150001) 

摘      要：Interfacial solar evaporation technology is considered one of the most promising strategies for alleviating the scarcity of freshwater resources. However, solar-driven evaporation technology cannot eliminate the pollutants in the residual wastewater.To solve this problem, we have prepared a two-in-one solar-driven evaporation/photocatalysis system by decorating MoS2/covalent organic framework (COF) heterojunctions on wood (MoS2/COF-wood). Thanks to the unique porous structure of wood, it provides a strong guarantee for water transport and vapor release during the evaporation process. The introduction of MoS2and COFs can promote the breaking of hydrogen bonds between water molecules, which leads to a significant decrease in the enthalpy of evaporation, achieving a water evaporation rate as high as 2.17 kg m-2h-1under 1 sun irradiation. Meanwhile,the resulting MoS2/COF-wood exhibits good salt resistance and reusability. In addition, the heterojunctions formed between COFs and MoS2can effectively inhibit charge carrier complexation and improve the photocatalytic degradation ability of pollutants (over 99%). This study highlights the construction strategy of bifunctional wood-based materials for freshwater production and wastewater remediation.