Scholarlink

<p>Radiative cooling without energy consumption is an ideal green alternative for air conditioning. Herein, we fabricate a hierarchically structured superhydrophobic composite film of polydimethylsiloxane, hollow glass beads and silica aerogels (S-PDMS/HGB/SSA) which integrates strong sunlight reflectance (95.3%), high thermal infrared emittance (96.9%) and robust superhydrophobicity (160.9°). The effective synergy of the high solar reflection and thermal infrared emission allows the coating to achieve a sub-ambient temperature drop of 7.4&#xa0;°C under strong sunlight. The superhydrophobicity keeps the composite film away from contamination by self-cleaning, maintaining well the radiative cooling performance for long-term outdoor application. Additionally, the as prepared film demonstrates excellent chemical durability after exposure to different pH solutions and UV light irradiation. This work provides a new strategy to integrate self-cleaning with radiative cooling, showing great potential to advance energy-free cooling materials toward real-world applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Hierarchically structured superhydropobic polydimethylsiloxane composite film for daytime radiative cooling

  • 期刊论文

  • 发表日期：

    2025年5月8日

查看全文
  • Bowei Xu,
  • Taijiang Li,
  • Qi Sun,
  • Zhengji Lou,
  • Shengguang Chen,
  • Wei Li

摘要

Radiative cooling without energy consumption is an ideal green alternative for air conditioning. Herein, we fabricate a hierarchically structured superhydrophobic composite film of polydimethylsiloxane, hollow glass beads and silica aerogels (S-PDMS/HGB/SSA) which integrates strong sunlight reflectance (95.3%), high thermal infrared emittance (96.9%) and robust superhydrophobicity (160.9°). The effective synergy of the high solar reflection and thermal infrared emission allows the coating to achieve a sub-ambient temperature drop of 7.4 °C under strong sunlight. The superhydrophobicity keeps the composite film away from contamination by self-cleaning, maintaining well the radiative cooling performance for long-term outdoor application. Additionally, the as prepared film demonstrates excellent chemical durability after exposure to different pH solutions and UV light irradiation. This work provides a new strategy to integrate self-cleaning with radiative cooling, showing great potential to advance energy-free cooling materials toward real-world applications.