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[期刊论文]

A hierarchically structured self-cleaning energy-free polymer film for daytime radiative cooling

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author:

Huang, Meng-Chen (Huang, Meng-Chen.) [1] | Xue, Chao-Hua (Xue, Chao-Hua.) [2] | Huang, Jianying (Huang, Jianying.) [3] (Scholars:黄剑莹) | Unfold

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EI Scopus SCIE

Abstract:

Radiative cooling without using electricity represents an ideal green solution for air-conditioning. Despite exciting progress made so far, most of the radiative cooling materials are vulnerable to outdoor contamination, which leads to decreased performance. Herein, we fabricate a hierarchically structured PVDF/PDMS porous film which integrates strong sunlight reflectance (97%), high thermal-infrared emittance (96%) and robust super hydrophobicity (160.2). The synergy of the effective solar reflection and thermal-infrared emission enables the film to yield a sub-ambient temperature drop of 12.3 degrees C under strong sunlight. More importantly, the super hydrophobicity keeps the film away from contamination by self-cleaning, maintaining well the radiative cooling performance for a long-term outdoor use. Additionally, the as-obtained film shows 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.

Keyword:

Energy-saving Radiative cooling Self-cleaning Superhydrophobic

Community:

  • [ 1 ] [Huang, Meng-Chen]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xi'an 710021, Peoples R China
  • [ 2 ] [Xue, Chao-Hua]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xi'an 710021, Peoples R China
  • [ 3 ] [Bai, Zhong-Xue]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xi'an 710021, Peoples R China
  • [ 4 ] [Wei, Ren-Xuan]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xi'an 710021, Peoples R China
  • [ 5 ] [Du, Mi-Mi]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xi'an 710021, Peoples R China
  • [ 6 ] [Jia, Shun-Tian]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xi'an 710021, Peoples R China
  • [ 7 ] [Huang, Jianying]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Peoples R China
  • [ 8 ] [Lai, Yuekun]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Peoples R China
  • [ 9 ] [Liu, Bing-Ying]Shaanxi Univ Sci & Technol, Coll Environm Sci & Engn, Xi'an 710021, Peoples R China
  • [ 10 ] [Guo, Xiao-Jing]Shaanxi Univ Sci & Technol, Coll Mat Sci & Engn, Xi'an 710021, Peoples R China
  • [ 11 ] [Wang, Hui-Di]Shaanxi Univ Sci & Technol, Coll Mat Sci & Engn, Xi'an 710021, Peoples R China
  • [ 12 ] [Chen, Zhong]Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore, Singapore

Reprint 's Address:

  • [Xue, Chao-Hua]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Peoples R China;;[Lai, Yuekun]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Peoples R China;;

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Source :

CHEMICAL ENGINEERING JOURNAL

ISSN: 1385-8947

Year: 2022

Volume: 442

1 5 . 1

JCR@2022

1 3 . 4 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:66

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 118

SCOPUS Cited Count: 85

ESI Highly Cited Papers on the List: 9 Unfold All

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