Wu Wanze, Zhang Yangyang, Miao Shiwei, Wu Yongzhong, Gong Xiao
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China.
School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China.
Langmuir. 2023 Oct 24;39(42):15131-15141. doi: 10.1021/acs.langmuir.3c02269. Epub 2023 Oct 10.
Photothermal materials that can convert solar energy into heat energy through photothermal conversion have attracted extensive attention, but these materials are easily polluted by the environment. Here, we propose a simple and effective strategy for constructing photothermal superhydrophobic cotton fabrics with self-cleaning ability. The PDA@PEI@GA@Ag@PDMS-coated cotton fabric can achieve good superhydrophobicity (water contact angle: 159.6°) by a simple dipping method and mussel-inspired dopamine surface modification, which is regulated by the mass of dopamine, the mass of silver nitrate, and the concentration of polydimethylsiloxane (PDMS). The coated cotton fabric has good physical and chemical stability. Meanwhile, the coated cotton fabric has excellent self-cleaning and antifouling properties. The superhydrophobic PDA@PEI@GA@Ag@PDMS fabric exhibits excellent and stable photothermal properties, with the surface temperature reaching 70.4 °C under simulated sunlight with a current of 20 A. This photothermal superhydrophobic fabric with self-cleaning properties is expected to be applied in the field of photothermal conversion.
能够通过光热转换将太阳能转化为热能的光热材料已引起广泛关注，但这些材料容易受到环境污染。在此，我们提出了一种构建具有自清洁能力的光热超疏水棉织物的简单有效策略。通过简单的浸渍方法和受贻贝启发的多巴胺表面改性，PDA@PEI@GA@Ag@PDMS涂层棉织物可实现良好的超疏水性（水接触角：159.6°），这受到多巴胺质量、硝酸银质量和聚二甲基硅氧烷（PDMS）浓度的调节。涂层棉织物具有良好的物理和化学稳定性。同时，涂层棉织物具有优异的自清洁和防污性能。超疏水的PDA@PEI@GA@Ag@PDMS织物表现出优异且稳定的光热性能，在20 A电流的模拟阳光下表面温度可达70.4°C。这种具有自清洁性能的光热超疏水织物有望应用于光热转换领域。
