Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar-Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants.

Autor: Yu MY; Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China., Wu J; Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China. wuj@buct.edu.cn., Yin G; Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China., Jiao FZ; State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China., Yu ZZ; State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China. yuzz@mail.buct.edu.cn., Qu J; Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China. qujin@mail.buct.edu.cn.
Jazyk: angličtina
Zdroj: Nano-micro letters [Nanomicro Lett] 2024 Oct 23; Vol. 17 (1), pp. 48. Date of Electronic Publication: 2024 Oct 23.
DOI: 10.1007/s40820-024-01544-9
Abstrakt: Although solar steam generation strategy is efficient in desalinating seawater, it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic pollutants. Herein, dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co 2 (OH) 2 CO 3 nanorod top layer and a bacterial cellulose/Co 2 (OH) 2 CO 3 nanorod (BCH) bottom layer. Crucially, the hydrogen bonding networks inside the membrane can be tuned by the rich surface -OH groups of the bacterial cellulose and Co 2 (OH) 2 CO 3 as well as the ions and radicals in situ generated during the catalysis process. Moreover, both SO 4 2- and HSO 5 - can regulate the solvation structure of Na + and be adsorbed more preferentially on the evaporation surface than Cl - , thus hindering the de-solvation of the solvated Na + and subsequent nucleation/growth of NaCl. Furthermore, the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation efficiency. This work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.
(© 2024. The Author(s).)
Databáze: MEDLINE
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