Metal-Organic Frameworks as a Thermal Emitter for High-Performance Passive Radiative Cooling.

Autor: Lam DV; National Creative Research Initiative Center for Functionally Antagonistic Nano-Engineering, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea., Dung DT; Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, South Korea.; University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, South Korea., Nguyen UNT; Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, South Korea.; University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, South Korea., Kang HS; Wearable Platform Materials Technology Center (WMC), Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea., Bae BS; Wearable Platform Materials Technology Center (WMC), Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea., Kim HD; Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, South Korea., Lim M; Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, South Korea., Kim D; School of Mechanical and Aerospace Engineering, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, South Korea., Kim JH; Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, South Korea.; University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, South Korea., Lee SM; Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, South Korea.; University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, South Korea.
Jazyk: angličtina
Zdroj: Small methods [Small Methods] 2024 Aug 16, pp. e2401141. Date of Electronic Publication: 2024 Aug 16.
DOI: 10.1002/smtd.202401141
Abstrakt: Passive radiative cooling represents a transformative approach to achieving sustainable cooling on Earth without relying on energy consumption. In this research, the optical characteristics of five readily accessible metal-organic frameworks (MOFs): ZIF-67(Co), MOF-74(Ni), HKUST-1(Cu), MOF-801(Zr), and UiO-66(Zr) are meticulously explored. The objective is to identify the pivotal factors that influence their ability to facilitate radiative cooling. Through an in-depth analysis encompassing spectroscopic features, surface texture, and porosity, it is found that the MOFs' cooling efficacy is largely influenced by their optical bandgaps and functional groups, although other factors like chemical composition and structural characteristics remain to be considered. Notably, UiO-66(Zr) emerged as the standout performer, boasting an impressive solar reflectance of 91% and a mid-infrared emissivity of 96.8%. Remarkably, a fabric treated with UiO-66(Zr) achieved a substantial sub-ambient cooling effect, lowering temperatures by up to 5 °C and delivering a cooling power of 26 W m -2 at 300 K. The findings underscore the vast potential of MOFs in offering new opportunities to advance passive radiative cooling technologies, paving the way for their extensive application in this field.
(© 2024 The Author(s). Small Methods published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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