{"title":"日间辐射冷却用分层结构超疏水聚二甲基硅氧烷复合薄膜","authors":"Bowei Xu, Taijiang Li, Qi Sun, Zhengji Lou, Shengguang Chen, Wei Li","doi":"10.1007/s10853-025-10794-w","DOIUrl":null,"url":null,"abstract":"<div><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 °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></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 19","pages":"7909 - 7923"},"PeriodicalIF":3.5000,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hierarchically structured superhydropobic polydimethylsiloxane composite film for daytime radiative cooling\",\"authors\":\"Bowei Xu, Taijiang Li, Qi Sun, Zhengji Lou, Shengguang Chen, Wei Li\",\"doi\":\"10.1007/s10853-025-10794-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><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 °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></div>\",\"PeriodicalId\":645,\"journal\":{\"name\":\"Journal of Materials Science\",\"volume\":\"60 19\",\"pages\":\"7909 - 7923\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2025-05-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10853-025-10794-w\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10853-025-10794-w","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Hierarchically structured superhydropobic polydimethylsiloxane composite film for daytime radiative cooling
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.
期刊介绍：
The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
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