Tuning on passive interfacial cooling of covalent organic framework hydrogel for enhancing freshwater and electricity generation  

作　　者：Jianfei Wu Ziwei Cui Yuxuan Su Dongfang Wu Jundie Hu Jiafu Qu Jianzhang Li Fangyuan Kang Dan Tian Qichun Zhang Yahui Cai 

机构地区：[1]Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,College of Materials Science and Engineering,Nanjing Forestry University,Nanjing,China [2]School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou,China [3]State Key Laboratory of Efficient Production of Forest Resources,Beijing Forestry University,Beijing,China [4]Department of Materials Science and Engineering,Department of Chemistry,Center of Super-Diamond and Advanced Films&Hong Kong Institute of Clean Energy,City University of Hong Kong,Hong Kong,China

出　　处：《SusMat》2024年第5期139-153,共15页可持续发展材料（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:22108125,22175094;Natural Science Foundation of Jiangsu Province,Grant/Award Number:BK20210627;China Postdoctoral Science Foundation,Grant/Award Number:2023M730484;Postgraduate Research&Practice Innovation Program of Jiangsu Province,Grant/Award Number:KYCX23_1173。

摘　　要：Developing an efficient freshwater and electricity co-generation device(FECGD)can solve the shortage of freshwater and electricity.However,the poor salt resistance and refrigeration properties of the materials for FECGD put big challenges in the efficient and stable operation of these devices.To address these issues,we propose the covalent organic framework(COF)confined co-polymerization strategy to prepare COF-modified acrylamide cationic hydrogels(ACH-COF),where hydrogen bonding interlocking between negatively charged polymer chains and COF pores can form a salt resistant hydrogel for stabilizing tunable passive interfacial cooling(TPIC).The FECPDs based on the TPIC and salt resistance of ACH-COF display a maximum output power density of 2.28 W m-2,which is 4.3 times higher than that of a commercial thermoelec-tric generator under one solar radiation.The production rate of freshwater can reach 2.74 kg m-2 h-1.Our results suggest that the high efficiency and scala-bility of the FECGD can hold the promise of alleviating freshwater and power shortages.

关 键 词：COF confined co-polymerization environmental sensing freshwater and electricity co-generation passive interfacial cooling salt resistance 

分 类 号：TQ427.26[化学工程]