Bioinspired Durable Daytime Radiative Cooling Wood: Realizing Outdoor Longtime Use

被引：4

作者：

Cai, Chenyang ^{[1
]}

Zhao, Xin ^{[1
]}

Miao, Chao ^{[1
]}

Tian, Xinyi ^{[1
]}

Xie, Feiyang ^{[1
]}

Luo, Faming ^{[1
]}

Zhang, Meng ^{[2
]}

Wu, Xiaodan ^{[1
]}

Liu, Jing ^{[1
]}

Jiang, Bowen ^{[3
]}

Fu, Yu ^{[1
]}

机构：

[1] Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Sch Mat Sci & Engn, Nanjing 210037, Jiangsu, Peoples R China

[2] Chinese Acad Forestry CAF, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China

[3] Southeast Univ, SEU FEI Nanop Ctr, Key Lab MEMS, Nanjing 210096, Peoples R China

来源：

NANO LETTERS | 2025年 / 25卷 / 11期

关键词：

wood; radiative cooling; durable; energy saving;

D O I：

10.1021/acs.nanolett.4c06496

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Daytime radiative cooling dissipates heat from surfaces by reflecting sunlight and emitting infrared radiation to outer space, featuring zero-energy consumption. Wood-based coolers have received more attention due to their high infrared emissivity, sustainability, and low cost. However, they often degrade under ultraviolet (UV) radiation exposure, resulting in a poor cooling efficiency. Herein, inspired by the structure-functionality relationship in Saharan silver ants, an outdoor durable cooling wood (DCW) is developed that achieves excellent comprehensive performance via the assembly of the photonic structure of Mica@TiO2 on the structure of delignified wood, including both high solar reflectance (0.958), infrared emittance (0.95), mechanical strength (47 MPa), and UV resistance. The unique structure can prevent breaking of the C-O-C skeleton of wood under direct sunlight; the daytime cooling efficiency of DCW can maintain 4.5 degrees C after 720 h of UV exposure. This work paves the way for the development of durable daytime radiative cooling materials for energy savings.

引用

页码：4369 / 4378

页数：10

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