Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (4): 20240469.doi: 10.7503/cjcu20240469

• Material Chemistry • Previous Articles     Next Articles

Preparation of Ti3C2-MXene/CuS/PVDF Composite Photothermal Membrane and Its Solar-driven Interfacial Water Evaporation Performance

JIANG Yanli1, XU Yunsong2, WANG Jiankang3, LI Weihao2, SONG Ying2, WANG Xinzhi2, YAO Zhongping2()   

  1. 1.Department of Chemistry,Harbin University,Harbin 150086,China
    2.State Key Laboratory of Urban Water Resources and Water Environment,College of Chemical Engineering and Chemistry,Harbin Institute of Technology,Harbin 150001,China
    3.School of Materials Science and Engineering,Yangtze Normal University,Fuling 408100,China
  • Received:2024-10-16 Online:2025-04-10 Published:2024-12-07
  • Contact: YAO Zhongping E-mail:yaozhongping@hit.edu.cn
  • Supported by:
    the Open Project of State Key Laboratory of Urban Water Resources and Water Environment, Harbin Institute of Technology, China(HCK202407);the National Natural Science Foundation of China(52276152);the Natural Science Foundation of Chongqing, China(SCTB2023NSCQ-MSX0455)

Abstract:

Ti3C2-MXene/CuS composite was synthesized by chemical etching and solvothermal method, and then Ti3C2-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 Ti3C2-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/m2. 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 Ti3C2-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.

Key words: Interfacial water evaporation, Photothermal conversion, Ti3C2-MXene, CuS

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