PMID- 37039748
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230704
LR  - 20230704
IS  - 2051-6355 (Electronic)
IS  - 2051-6347 (Linking)
VI  - 10
IP  - 7
DP  - 2023 Jul 3
TI  - Selective spectral absorption of nanofibers for color-preserving daytime 
      radiative cooling.
PG  - 2487-2495
LID - 10.1039/d3mh00391d [doi]
AB  - Passive radiative cooling is a promising solution for cooling objects without 
      consuming energy. However, chemical colors absorb visible light and generate 
      heat, posing a challenge in the design of a colored sub-ambient daytime radiative 
      cooler (CSDRC) in a simple and scalable way. Herein, we used nanofibers (NF) to 
      achieve selective spectral absorption of the daytime radiative cooler through a 
      dope-dyeing electrospinning technique. This approach allows for the selective 
      absorption of desired colors in the visible spectrum, while the nanofiber 
      structure provides strong visible and near-infrared light scattering to minimize 
      solar heating. We selected cellulose acetate (CA) with mid-infrared emittance 
      characteristics for efficient sky cooling. Our design enabled the CA NF CSDRC to 
      exhibit an ultra-high NIR reflectance of 99%, a high MIR emittance of 95%, and 
      vibrant colors. These unique optical properties resulted in a reduction of the 
      maximum ambient temperature by 3.2  degrees C and a cooling power of  approximately 40 W m(-2) at a 
      solar intensity of 700 W m(-2). Additionally, the flexibility and deformability 
      of the colored nanofiber cooler make it suitable for thermal management in 
      various practical applications. Our work provides a simple and scalable solution 
      for designing colored passive radiative cooling materials.
FAU - Li, Xiangshun
AU  - Li X
AD  - Key Laboratory of Textile Science & Technology, Ministry Education, College of 
      Textiles, Donghua University, 2999 North Renmin Road, Songjiang, Shanghai, 
      201620, China. jidongxiao@dhu.edu.cn.
FAU - Xu, Huilin
AU  - Xu H
AD  - Key Laboratory of Textile Science & Technology, Ministry Education, College of 
      Textiles, Donghua University, 2999 North Renmin Road, Songjiang, Shanghai, 
      201620, China. jidongxiao@dhu.edu.cn.
FAU - Yang, Yuchen
AU  - Yang Y
AD  - Key Laboratory of Textile Science & Technology, Ministry Education, College of 
      Textiles, Donghua University, 2999 North Renmin Road, Songjiang, Shanghai, 
      201620, China. jidongxiao@dhu.edu.cn.
FAU - Li, Faxue
AU  - Li F
AUID- ORCID: 0000-0002-5024-0649
AD  - Key Laboratory of Textile Science & Technology, Ministry Education, College of 
      Textiles, Donghua University, 2999 North Renmin Road, Songjiang, Shanghai, 
      201620, China. jidongxiao@dhu.edu.cn.
FAU - Ramakrishna, Seeram
AU  - Ramakrishna S
AUID- ORCID: 0000-0001-8479-8686
AD  - Department of Mechanical Engineering, National University of Singapore, Singapore 
      119260, Singapore.
FAU - Yu, Jianyong
AU  - Yu J
AD  - Innovation Center for Textile Science and Technology, Donghua University, 
      Shanghai 201620, China.
FAU - Ji, Dongxiao
AU  - Ji D
AUID- ORCID: 0000-0002-5255-7076
AD  - Key Laboratory of Textile Science & Technology, Ministry Education, College of 
      Textiles, Donghua University, 2999 North Renmin Road, Songjiang, Shanghai, 
      201620, China. jidongxiao@dhu.edu.cn.
FAU - Qin, Xiaohong
AU  - Qin X
AUID- ORCID: 0000-0003-4663-903X
AD  - Key Laboratory of Textile Science & Technology, Ministry Education, College of 
      Textiles, Donghua University, 2999 North Renmin Road, Songjiang, Shanghai, 
      201620, China. jidongxiao@dhu.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20230703
PL  - England
TA  - Mater Horiz
JT  - Materials horizons
JID - 101623537
SB  - IM
EDAT- 2023/04/12 06:00
MHDA- 2023/04/12 06:01
CRDT- 2023/04/11 10:33
PHST- 2023/04/12 06:01 [medline]
PHST- 2023/04/12 06:00 [pubmed]
PHST- 2023/04/11 10:33 [entrez]
AID - 10.1039/d3mh00391d [doi]
PST - epublish
SO  - Mater Horiz. 2023 Jul 3;10(7):2487-2495. doi: 10.1039/d3mh00391d.