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Preparation and water evaporation properties of CNT@C membrane

Authors： WANG Kuandi, LIU Tong, LI Shuang, HE Gaohong, JIANG Xiaobin, WU Xuemei, XIAO Wu, LI Xiangcun

Units： School of Chemical Engineering, State Key Laboratory of Fine Chemicals, Membrane Science and Technology Research and Development Center, Dalian University of Technology, Dalian 116024, China

KeyWords： phase conversion; water evaporation; carbon membrane; carbon nanotube

ClassificationCode：TQ152

year,volume(issue):pagination： 2025,45(5):112-119

Abstract：

Aiming at the problems of poor light capture ability, high heat loss and low conversion efficiency of photothermal materials in solar water evaporation system, in this paper, carbon-based CNTs and their composites were used as photothermal conversion materials to achieve efficient and stable solar evaporation performance through structural regulation of the water evaporation system. The porous water-evaporated CNT@C membranes with carbon nanotubes as skeleton were prepared by phase conversion method, and its application in solar water evaporation was studied. The hierarchical pore structure of CNT@C membrane provides a guarantee for water transport. The good light absorption performance of the carbon nanotubes in CNT@C membrane ensures that a wide range of sunlight can be absorbed. In an isolated water evaporation system using CNT@C-1 membrane as photothermal material, the evaporation rate of water was 2.35 kg/(m2·h） under one sunlight irradiation. In the test of real seawater, the evaporation rate of CNT@C-1 membrane was 2.31 kg/（m2·h).

Funds：

国家自然科学基金面上项目(22478054); 创新群体项目（22021005）

AuthorIntro：

王宽迪（2003-），男，山东滨州人，硕士研究生，主要研究方向为膜制备及水处理

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