Journal article
Facile synthesis, formation mechanism and thermochromic properties of W-doped VO2(M) nanoparticles for smart window applications
Journal of Materials Chemistry C, Vol.8(38), pp.13396-13404
2020
Abstract
Monoclinic VO2(M) has been considered as one of the most promising materials for fabricating energy-saving smart windows, but its scalable synthesis is still a great challenge. In this work, pure and tungsten (W)-doped VO2(M) nanoparticles (20–50 nm) were prepared by a simple hydrothermal recrystallization method using an amorphous precursor obtained from coprecipitation in a mixed VOSO4 and NaOH solution (pH = 9). The phase transition temperature of the obtained W-doped VO2(M) nanoparticles decreases with increasing W-doping, by −28.4 °C per at% of W in the range of 0–1.1 at%. The mechanism of hydrothermal recrystallization was studied by using ex situ powder X-ray diffraction (PXRD) and in situ synchrotron radiation-based PXRD. It was found that the hydrothermal synthesis underwent two steps: (1) recrystallization of amorphous precursor to VO2(B) crystals, and (2) allotropic phase transformation from the metastable intermediate VO2(B) to VO2(M). In addition, the fabricated films using VO2(M) with 0.7 at% W-doping showed excellent thermochromic performance, with a suitable phase transition temperature of 42.7 °C, high average luminance transmittance of up to 61.7%, and good solar energy modulation ability of 11.7%, making them a suitable material for efficient and low-cost energy saving smart windows.
Details
- Title
- Facile synthesis, formation mechanism and thermochromic properties of W-doped VO2(M) nanoparticles for smart window applications
- Authors/Creators
- L. Zhang (Author/Creator) - Shanghai UniversityF. Xia (Author/Creator) - Murdoch UniversityJ. Yao (Author/Creator) - Shanghai UniversityT. Zhu (Author/Creator) - Shanghai UniversityH. Xia (Author/Creator) - Shanghai UniversityG. Yang (Author/Creator) - Shanghai UniversityB. Liu (Author/Creator) - Shanghai UniversityY. Gao (Author/Creator) - Shanghai University
- Publication Details
- Journal of Materials Chemistry C, Vol.8(38), pp.13396-13404
- Publisher
- Royal Society of Chemistry
- Identifiers
- 991005541683107891
- Copyright
- © 2020 The Royal Society of Chemistry
- Murdoch Affiliation
- Chemistry and Physics
- Language
- English
- Resource Type
- Journal article
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- Domestic collaboration
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- Citation topics
- 2 Chemistry
- 2.62 Electrochemistry
- 2.62.1525 Vanadium Oxides
- Web Of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- ESI research areas
- Materials Science