A leaf-like structured membrane for highly efficient and persistent radiative cooling.

IF 12.2 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Materials Horizons Pub Date : 2025-01-27 DOI:10.1039/d4mh01697a
Minghan Wu, Yu Li, Gang Huang, Ruiqi Xu, Xiaochun Yin, Guizhen Zhang
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Abstract

Passive daytime radiative cooling offers a promising approach to address energy, environmental, and safety issues caused by global warming. However, the contradiction between high radiative cooling performance and long-lasting ultraviolet (UV) durability is a primary limitation at the current stage. Here, inspired by the ability of epidermal cells and palisade cells on the leaf surface to protect internal leaf structures (such as chloroplasts and nuclei) under drought and high-temperature conditions, a double-layer passive radiative cooling (PRC) porous membrane, which consists of an upper protective layer densely packed with highly ultraviolet-reflective inorganic particles and a bottom cooling layer doped with a variety of optically characterized inorganic particles, was developed to overcome these challenges. This special leaf-like structure and the synergistic effect of the inorganic particles ensure that the PRC membrane has a high solar reflectivity of 99.3% and a high mid-infrared (MIR) emissivity of ∼95%. In addition, the membrane still maintains excellent optical and mechanical performance after ultraviolet radiation treatment with a total radiation dose of 7000 MJ m-2. Therefore, the unique structural design and excellent comprehensive performance of the membrane can greatly promote the practical applications of the PRC technology.

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叶状结构膜可实现高效持久的辐射冷却。
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来源期刊
Materials Horizons
Materials Horizons CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
18.90
自引率
2.30%
发文量
306
审稿时长
1.3 months
期刊介绍: Materials Horizons is a leading journal in materials science that focuses on publishing exceptionally high-quality and innovative research. The journal prioritizes original research that introduces new concepts or ways of thinking, rather than solely reporting technological advancements. However, groundbreaking articles featuring record-breaking material performance may also be published. To be considered for publication, the work must be of significant interest to our community-spanning readership. Starting from 2021, all articles published in Materials Horizons will be indexed in MEDLINE©. The journal publishes various types of articles, including Communications, Reviews, Opinion pieces, Focus articles, and Comments. It serves as a core journal for researchers from academia, government, and industry across all areas of materials research. Materials Horizons is a Transformative Journal and compliant with Plan S. It has an impact factor of 13.3 and is indexed in MEDLINE.
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