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Tungsten-Doped VO2/Starch Derivative Hybrid Nanothermochromic Hydrogel for Smart Window

1
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
2
Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi University, Shihezi 832000, China
3
School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
4
School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(7), 970; https://doi.org/10.3390/nano9070970
Received: 25 May 2019 / Revised: 10 June 2019 / Accepted: 27 June 2019 / Published: 2 July 2019
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Abstract

Highly efficient energy-saving windows with high solar modulation properties (ΔTsol) are the everlasting pursuit of research for industrial applications in the smart window field. Hybridization is an effective means of improving both ΔTsol and luminous transmittance (Tlum). In this paper, hybrid thermochromic films were synthesized using tungsten-doped VO2 nanoparticles (NPs) and starch derivatives. Thermoresponsive 2-hydroxy-3-butoxypropyl starch (HBPS) was prepared with a low critical solution temperature (LCST) varying from 32 to 21 °C by the substitution of reactive groups. The hybrid film was obtained by dispersing W-doped VO2 NPs in HBPS hydrogels, which exhibiting remarkable solar modulation property (ΔTsol = 34.3%) with a high average luminous transmittance (Tlum, average = 53.9%). View Full-Text
Keywords: W-doped VO2 (M) NPs; starch derivative; inorganic and organic hybrid film; thermochromism; smart window W-doped VO2 (M) NPs; starch derivative; inorganic and organic hybrid film; thermochromism; smart window
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wang, Y.; Zhao, F.; Wang, J.; Li, L.; Zhang, K.; Shi, Y.; Gao, Y.; Guo, X. Tungsten-Doped VO2/Starch Derivative Hybrid Nanothermochromic Hydrogel for Smart Window. Nanomaterials 2019, 9, 970.

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