Ti_(3)C_(2)-MXene/CuS/PVDF复合光热膜的制备及太阳能驱动界面水蒸发性能  

Preparation of Ti_(3)C_(2)-MXene/CuS/PVDF Composite Photothermal Membrane and Its Solar-driven Interfacial Water Evaporation Performance

作　　者：姜艳丽[1] 徐云松 王建康 李伟豪 宋英[2] 汪新智[2] 姚忠平[2] JIANG Yanli;XU Yunsong;WANG Jiankang;LI Weihao;SONG Ying;WANG Xinzhi;YAO Zhongping(Department of Chemistry,Harbin University,Harbin 150086,China;State Key Laboratory of Urban Water Resources and Water Environment,College of Chemical Engineering and Chemistry,Harbin Institute of Technology,Harbin 150001,China;School of Materials Science and Engineering,Yangtze Normal University,Fuling 408100,China)

机构地区：[1]哈尔滨学院化学系,哈尔滨150086 [2]哈尔滨工业大学城市水资源与水环境国家重点实验室,化工与化学学院,哈尔滨150001 [3]长江师范学院材料科学与工程学院,涪陵408100

出　　处：《高等学校化学学报》2025年第4期143-154,共12页Chemical Journal of Chinese Universities

基　　金：哈尔滨工业大学城市水资源与水环境国家重点实验室开放项目(批准号:HCK202407);国家自然科学基金(批准号:52276152);重庆市自然科学基金(批准号:SCTB2023NSCQ-MSX0455)资助。

摘　　要：采用化学刻蚀-溶剂热法合成了Ti_(3)C_(2)-MXene/CuS复合材料,再通过真空抽滤将该复合材料负载到聚偏二氟乙烯(PVDF)膜上,构筑了Ti_(3)C_(2)-MXene/CuS/PVDF复合光热膜,并研究了其界面水蒸发性能.X射线衍射(XRD)和扫描电子显微镜(SEM)表征结果显示,CuS纳米颗粒将Ti_(3)C_(2)-MXene包裹并填满片层间隙.界面水蒸发性能测试结果表明,在180℃反应9 h所得材料的性能最佳,在1 kW/m2光照强度下,其界面水蒸发速率和蒸发效率分别为1.92 kg·m^(-2)·h^(-1)和110.4%.此外,复合光热膜具有较好的海水脱盐效果及良好的循环稳定性.紫外-可见漫反射光谱(DRS)与光热转换实验结果表明,Ti_(3)C_(2)-MXene与CuS的复合提高了其光吸收能力与光热转换效率,二者的协同效应显著提升了材料的光热转换和界面水蒸发性能.本工作可为低成本、高性能光热转换材料的开发提供借鉴.Ti_(3)C_(2)-MXene/CuS composite was synthesized by chemical etching and solvothermal method,and then Ti_(3)C_(2)-MXene/CuS/PVDF(polyvinylidene fluoride)composite photothermal film was obtained by vacuum filtration.Finally,its interfacial water evaporation performance was studied.X-ray diffraction and scanning electron microscopy characterization showed that CuS nanoparticles successfully coated Ti_(3)C_(2)-MXene and filled its lamellar gap.The results of interfacial water evaporation revealed that the best performance was obtained at the reaction temperature of 180℃and the reaction time of 9 h.The interfacial evaporation rate and evaporation efficiency were 1.92 kg·m^(-2)·h^(-1)and 110.4%,respectively under light intensity of 1 kW/m^(2).In addition,desalination effect and cycling stability in seawater desalination of the composite photothermal film is good.The results of UV-Vis diffuse reflectance spectroscopy(DRS)and photothermal conversion performance showed that the combination of Ti_(3)C_(2)-MXene and CuS improved the light absorption capacity and photothermal conversion efficiency.By exerting the synergistic effect between them,the photothermal conversion and interfacial evaporation properties of the materials were significantly improved.This work can provide reference for the development of low cost and high performance photothermal conversion materials.

关 键 词：界面水蒸发 光热转换 Ti_(3)C_(2)-MXene CUS 

分 类 号：TB34[一般工业技术—材料科学与工程] P747[天文地球—海洋科学]