A Comparison of the Potential Capability of SFS, SPS and HVSFS for the Production of Photocatalytic Titania Coatings

B Robinson, A Tabecki, S Paul, G. Shi, A. Mills, I.P. Parkin, J. A. Darr, H.L. de Villiers Lovelock

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The photocatalytic capabilities of titanium dioxide are widely published. Reported applications of titania coatings include air purification, water purification and self-cleaning. Suspension spray has been highlighted as a possible route for the deposition of highly active nanostructured TiO2 coatings. Published work has demonstrated the capabilities of suspension plasma spray and high-velocity suspension flame spray; however, little work exists for suspension flame spray (SFS). Herein, these three suspension spray processes are compared as regards their capability to produce photocatalytic TiO2 coatings and their potential for industrial scale-up. A range of coatings were produced using each process, manipulating coating parameters in order to vary phase composition and other coating characteristics to modify the activity. The coatings produced varied significantly between the processes with SFS being the most effective technique as regards future scale-up and coating photoactivity. SFS coatings were found to be up to nine times more active than analogous coating produced by CVD.
Original languageEnglish
Pages (from-to)161-172
JournalJournal of Thermal Spray Technology
Volume26
Issue number1
Early online date22 Dec 2016
DOIs
Publication statusPublished - Jan 2017

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