Synthesis of hydrophobic W18O49 nanorods for constructing UV/NIR-shielding and self-cleaning film |
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| Affiliation: | 1. School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi’an, 710021, China;2. Research Laboratory of Hydrothermal Chemistry, Faculty of Science and Technology, Kochi University, Kochi, 780-8520, Japan;3. Faculty of Engineering and InformationSciences, University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia;1. State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, PR China;2. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, Henan 450001, PR China |
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| Abstract: | Nanomaterials with ultraviolet/near-infrared (UV/NIR) shielding property have great potential for developing energy-saving windows. In this work, we report low-cost W18O49 nanorods as UV/NIR shielding material. W18O49 nanorods with the length of ~20 or ~60 nm were prepared by simple solvothermal method, and they exhibited strong size-dependent absorption in the UV/NIR region. By mixing W18O49 nanorods with polydimethylsiloxane (PDMS), W18O49@PDMS films were constructed and they could shield 55.58% of UV and 75.89% of NIR light while transmit 58.03% of visible light. A sealed box with W18O49@PDMS-coated glass as the window exhibited a minimal temperature elevation (△T = 9.2 °C) compared to those coated with pure glass (△T = 18.2 °C) or ITO glass (△T = 12.1 °C), under the irradiation of solar light (0.6 W cm?2). Additionally, the films had a contact angle of 122 ± 2°, showing self-cleaning ability. Therefore, W18O49@PDMS films can act as cost-efficient UV/NIR-shielding and self-cleaning film. |
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| Keywords: | Film UV/NIR-Shielding Self-cleaning |
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