Abstract
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 MoS2 and 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−2 h−1 under 1 sun irradiation. Meanwhile, the resulting MoS2/COF-wood exhibits good salt resistance and reusability. In addition, the heterojunctions formed between COFs and MoS2 can 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.
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Acknowledgements
This work was 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) and the Natural Science Foundation of the Jiangsu Higher Education Institutions (20KJA150001).
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Supporting Information: A bifunctional wood membrane modified by MoS2/covalent organic framework heterojunctions for effective solar-driven water evaporation and contaminant degradation
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Cui, Z., Wu, J., Li, H. et al. A bifunctional wood membrane modified by MoS2/covalent organic framework heterojunctions for effective solar-driven water evaporation and contaminant degradation. Sci. China Chem. (2024). https://doi.org/10.1007/s11426-023-1961-3
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DOI: https://doi.org/10.1007/s11426-023-1961-3