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- Title
Photocatalytic TiO<sub>2</sub> and Doped TiO<sub>2</sub> Coatings to Improve the Hygiene of Surfaces Used in Food and Beverage Processing--A Study of the Physical and Chemical Resistance of the Coatings.
- Authors
Navabpour, Parnia; Ostovarpour, Soheyla; Tattershall, Carin; Cooke, Kevin; Kelly, Peter; Verran, Joanna; Whitehead, Kathryn; Hill, Claire; Raulio, Mari; Priha, Outi
- Abstract
TiO2 coatings deposited using reactive magnetron sputtering and spray coating methods, as well as Ag- and Mo-doped TiO2 coatings were investigated as self-cleaning surfaces for beverage processing. The mechanical resistance and retention of the photocatalytic properties of the coatings were investigated over a three-month period in three separate breweries. TiO2 coatings deposited using reactive magnetron sputtering showed better mechanical durability than the spray coated surfaces, whilst the spray-deposited coating showed enhanced retention of photocatalytic properties. The presence of Ag and Mo dopants improved the photocatalytic properties of TiO2 as well as the retention of these properties. The spray-coated TiO2 was the only coating which showed light-induced hydrophilicity, which was retained in the coatings surviving the process conditions.
- Subjects
TITANIUM oxides synthesis; CHEMICAL resistance; CHEMICAL reactions; MAGNETRON sputtering; PHYSICAL vapor deposition
- Publication
Coatings (2079-6412), 2014, Vol 4, Issue 3, p433
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings4030433