UV / visible sol gel W-TiO2 photocatalytic coatings for interior building surfaces
authors Giampiccolo, A; Tobaldi, DM; Jones, E; Labrincha, JA; Kurchania, R; Ansell, MP; Ball, RJ
nationality International
journal BUILDING AND ENVIRONMENT
author keywords Tungsten doped TiO2; NOx; Methylene blue; Ink intelligent; Coatings; Air quality
keywords VOLATILE ORGANIC-COMPOUNDS; W-DOPED TIO2; MEDIUM-DENSITY FIBERBOARDS; INDOOR AIR PURIFICATION; TITANIUM-DIOXIDE; DYE; PHASE; NANOPARTICLES; FORMALDEHYDE; DEGRADATION
abstract This article describes the synthesis of tungsten doped (W-TiO2) nanoparticles and their incorporation into a coating to improve the air quality inside buildings. W-TiO2 was prepared using a sol-gel synthesis route incorporating 1%, 2.5% and 3% tungsten in TiO2. Coatings containing the nanoparticles were produced using a water/alcohol liquid phase containing a polyurethane binder and applied to the surface of medium density fibreboard (MDF). Photocatalytic activity of unbound nanoparticles was studied using methylene blue degradation to evaluate liquid/solid interface reactions and NOx degradation to study gas/solid interfacial reactions. The coatings containing the nanoparticles were applied onto the surface of MDF and evaluated using Ink Intelligent indicator dyes. In the tests photocatalytic activity under visible light of all W-TiO2 concentrations exhibited a higher activity compared to the commercially available Degussa P25. This paper has demonstrated for the first time that polyurethane W-TiO2 coatings can be effectively applied to MDF and exhibit activity in visible light.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0360-1323
isbn 1873-684X
year published 2021
volume 205
digital object identifier (doi) 10.1016/j.buildenv.2021.108203
web of science category 13
subject category Construction & Building Technology; Engineering, Environmental; Engineering, Civil
unique article identifier WOS:000704367700001
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journal impact factor 4.971
5 year journal impact factor 5.459
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