2018-Sustainable Industrial Processing Summit
SIPS2018
Volume 6. New and Advanced Materials and Technologies
| Editors: | F. Kongoli, F. Marquis, P. Chen, T. Prikhna, N. Chikhradze |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 392 pages |
| ISBN: | 978-1-987820-92-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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The Multi-layer Structures Based on TiO2 for Multifunctional Glazing Surface
Luminita Andronic1;1TRANSILVANIA UNIVERSITY OF BRASOV, Brasov, Romania;
Type of Paper: Regular
Id Paper: 215
Topic: 43
Abstract:
Multi-layer structures based on TiO<sub>2</sub> have been designed, developed, and assembled into functional nanostructures at the molecular-level to control the materials' properties. Controlling microstructure and homogeneity of nano-sized materials with well-defined properties will be done by sol-gel method and dip-coating methods. Due to the possibility of controlling the hydrolysis, condensation, and densification processes, the sol-gel method offers the opportunity to synthesize a large variety of new materials.
The glazing surfaces with photocatalytic water pollutants decontamination, low-E and thermochromic properties were obtained by epitaxial growth of nanostructures on commercial low-E glass substrate, thus ensuring multi-functionality of existing materials on the market, for the next generation of integrated windows in buildings with low energy consumption.
The thin films with multi-layers structure had following structure: substrate (low-E glass)/layer 1/layer2. Layer 1 is an oxide thin film of TiO<sub>2</sub> formed on the substrate, and acts as a barrier to prevent Na<sup>+</sup> from diffusing into the thermochromic layer. Layer 2 is a thermochromic layer of V<sub>x</sub>O<sub>y</sub>.
Characterisation of coating on low-E glass in terms of crystallinity, roughness, morphology, band gap energy, functional properties of glazing, and optical properties (transmittance, reflectance, and absorbance) will be performed. Materials that have transmittance of <70% are considered non-compliant with the target of at least 80% for which the glazing had kept the visual comfort. The coatings passed the stability and durability tests in climate chamber, humidity, salt spray testing, and exposure of glazing to a dry atmosphere at a temperature of 0-50°C, according to the ISO/ASTM standards. Photocatalysis standard tests of pollutants degradation consist in efficiency evaluate of methylene blue (MB) photodegradation in aqueous solution, according ISO 10678/2010.
Keywords:
Energy; Environment; New and advanced materials; Water purification;References:
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