Photocatalytic TiO2 and Doped TiO2 Coatings to Improve the Hygiene of Surfaces Used in Food and Beverage Processing: A Study of the Physical and Chemical Resistance of the Coatings

P. Navabpour, S. Ostovarpour, C. Tattershall, K. Cooke, P. Kelly, J. Verran, K. Whitehead, C. Hill, Mari Raulio, Outi Priha

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14 Citations (Scopus)

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
Original languageEnglish
Pages (from-to)433-449
JournalCoatings
Volume4
Issue number3
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

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Keywords

  • photocatalytic
  • TiO2
  • magnetron sputtering
  • spray coatings
  • beverage processing

Cite this

Navabpour, P., Ostovarpour, S., Tattershall, C., Cooke, K., Kelly, P., Verran, J., Whitehead, K., Hill, C., Raulio, M., & Priha, O. (2014). Photocatalytic TiO2 and Doped TiO2 Coatings to Improve the Hygiene of Surfaces Used in Food and Beverage Processing: A Study of the Physical and Chemical Resistance of the Coatings. Coatings, 4(3), 433-449. https://doi.org/10.3390/coatings4030433