Abstract
In this work, a novel aqueous self-dispersed TiO2is synthesized and then used to produce the highly water-dispersed ATO/TiO2composite particles, which has strong IR insulation property. Thus, it can be used to block the solar radiative heat transfer in a building. The primary particle size of ATO/TiO2composites detected by TEM ranges from 5 to 12 nm, but that of the initial ATO nano particles is more than 2 µm. A small amount of TiO2(16.7% wt) increases the Zeta potential in water from 6.7 to 37.01 mV, which represents the stability is largely enhanced. The IR transmittance in IR band is decreased from 91% (original glass) to 4.3% (ATO 83.33% wt). The thermal performances of glass with such coatings are simulated based on Hong Kong climate situation. For the best sample, the electricity used in air-conditioning and lighting is 27% less than uncoated glass. Furthermore, the TiO2makes the water contact angle of the coating ranging from 3 to 5.6°. Therefore, the coating film can be prevented from fouling due to super-hydrophilicity and have a longer life time.
Original language | English |
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Pages (from-to) | 499-508 |
Number of pages | 10 |
Journal | Solar Energy Materials and Solar Cells |
Volume | 174 |
DOIs | |
Publication status | Published - 1 Jan 2018 |
Keywords
- ATO
- Heat insulation
- Highly water-dispersed
- IR insulation
- Titanium dioxide
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films