Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2016 Jun 6:6:27373.
doi: 10.1038/srep27373.

Smart window coating based on F-TiO2-KxWO3 nanocomposites with heat shielding, ultraviolet isolating, hydrophilic and photocatalytic performance

Tongyao Liu  1 , Bin Liu  1 , Jing Wang  1 , Linfen Yang  1 , Xinlong Ma  1 , Hao Li  1 , Yihong Zhang  1 , Shu Yin  2 , Tsugio Sato  2 , Tohru Sekino  3 , Yuhua Wang  1
Affiliations

Smart window coating based on F-TiO2-KxWO3 nanocomposites with heat shielding, ultraviolet isolating, hydrophilic and photocatalytic performance

Tongyao Liu et al. Sci Rep. .

Abstract

A series of smart window coated multifunctional NIR shielding-photocatalytic films were fabricated successfully through KxWO3 and F-TiO2 in a low-cost and environmentally friendly process. Based on the synergistic effect of KxWO3 and F-TiO2, the optimal proportion of KxWO3 to F-TiO2 was investigated and the FT/2KWO nanocomposite film exhibited strong near-infrared, ultraviolet light shielding ability, good visible light transmittance, high photocatalytic activity and excellent hydrophilic capacity. This film exhibited better thermal insulation capacity than ITO and higher photocatalytic activity than P25. Meanwhile, the excellent stability of this film was examined by the cycle photocatalytic degradation and thermal insulation experiments. Overall, this work is expected to provide a possibility in integrating KxWO3 with F-TiO2, so as to obtain a multifunctional NIR shielding-photocatalytic nanocomposite film in helping solve the energy crisis and deteriorating environmental issues.

PubMed Disclaimer

Figures

Figure 1
Figure 1
XRD patterns of pure (a) F-TiO2, (b) KxWO3 and different FT-KWO nanocomposites: (c) 3FT/KWO, (d) 2FT/KWO, (e) FT/KWO, (f) FT/2KWO, (g) FT/3KWO.
Figure 2
Figure 2
SEM images of (a) F-TiO2, (b) KxWO3, (c) FT/2KWO nanocomposites; EDX spectra of (d) F-TiO2, (e) KxWO3, (f) FT/2KWO nanocomposites. The insets in (c) shows SEM image of FT/2KWO films (at 45o angle view).
Figure 3
Figure 3
(a) Low-, (b) High-magnification TEM images and (c) HRTEM images of as-synthesized FT/2KWO nanocomposites.
Figure 4
Figure 4
Transmittance spectra of (a) pure F-TiO2, different FT-KWO nanocomposites: (b) 3FT/KWO, (c) 2FT/KWO, (d) FT/KWO, (e) FT/2KWO, (f) FT/3KWO and (g) pure KxWO3 films. The inset shows the absorption spectra of different powders with the wavelength from 200 nm to 420 nm.
Figure 5
Figure 5
The inner temperature dependence on (a) irradiation time and (b) cooling time curves of sealed box covered with different films coated glass.
Figure 6
Figure 6
(a) Variation of MO concentration against irradiation time using F-TiO2 film, FT-KWO nanocomposite films with various KxWO3 contents and pure KxWO3 film under ultraviolet light irradiation and (b) plots of ln (C0/C) versus irradiation time for MO representing the fit using a pseudo-first-order reaction rate.
Figure 7
Figure 7
Contact angle of a water drop in air on new (a) F-TiO2, (b) KxWO3, (c) FT/2KWO films and (d) FT/2KWO film after the fourth photocatalytic experiment.
Figure 8
Figure 8. The working model of the FT-KWO and F-TiO2 coated window applied to different conditions.
See this image and copyright information in PMC

References

    1. Ong W.-J., Tan L.-L., Chai S.-P., Yong S.-T. & Mohamed A. R. Facet-Dependent Photocatalytic Properties of TiO2-Based Composites for Energy Conversion and Environmental Remediation. Chem Sus Chem 7, 690–719 (2014). - PubMed
    1. Yue D., You F. & Darling S. B. Domestic and overseas manufacturing scenarios of silicon-based photovoltaics: Life cycle energy and environmental comparative analysis. Solar Energy 105, 669–678 (2014).
    1. Wang W. et al. Monoclinic dibismuth tetraoxide: A new visible-light-driven photocatalyst for environmental remediation. Applied Catalysis B: Environmental 176–177, 444–453 (2015).
    1. Wen C., Cui Y., Chen X., Zong B. & Dai W.-L. Reaction temperature controlled selective hydrogenation of dimethyl oxalate to methyl glycolate and ethylene glycol over copper-hydroxyapatite catalysts. Applied Catalysis B: Environmental 162, 483–493 (2015).
    1. Qureshi M. I., Rasli A. M. & Zaman K. Energy crisis, greenhouse gas emissions and sectoral growth reforms: repairing the fabricated mosaic. Journal of Cleaner Production 112, Part 5, 3657–3666 (2016).

Publication types

LinkOut - more resources