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应用研究 CNT@C膜的制备及其水蒸发性能研究

作者：王宽迪，刘通，李爽，贺高红，姜晓滨，吴雪梅，肖武，李祥村

单位：大连理工大学化工学院，精细化工国家重点实验室，膜科学与技术研究开发中心，大连 116024

关键词：相转化法；水蒸发；碳膜；碳纳米管

DOI号： 10.16159/j.cnki.issn1007-8924.2025.05.011

分类号： TQ152

出版年,卷(期):页码： 2025,45(5):112-119

摘要：

针对太阳能水蒸发系统中光热材料光捕获能力差、热损大、光热转换效率低等问题，本研究以CNTs及其复合材料为光热转换材料，通过对水蒸发系统的结构调控实现高效、稳定的太阳能蒸发性能。通过相转化法制备了碳纳米管为骨架的多孔CNT@C水蒸发膜，并研究了其在太阳能水蒸发中的应用。CNT@C膜的分级孔道结构为水分的运输提供了保障，CNT@C膜中碳纳米管良好的吸光性能够确保广泛的太阳光被吸收。以CNT@C-1膜为光热材料的隔离式水蒸发系统，在1个太阳光强照射下（1 kW/m2），水蒸发速率为2.35 kg/(m2·h）；在真实海水的测试中，CNT@C-1膜的蒸发速率为2.31 kg/(m2·h）。

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).

基金项目：

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

作者简介：

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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