Systematic study of sol-gel parameters on TiO2 coating for CO2 photoreduction

Warren Athol Thompson, Clement Perier, M. Mercedes Maroto-Valer

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57 Citations (Scopus)
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Abstract

An optimized sol-gel method for TiO2 coating was developed for CO2 photoreduction using a systematic Design of Experiments (DOE) approach and an efficient Plackett-Burman (PB) design. Conducting fifteen experiments, the effects of seven sol-gel process parameters were investigated on four catalytic properties for CO2 photoreduction: band gap, catalyst coverage, anatase crystallinity and ratio anatase:rutile. The PB design results yielded a wide range for the catalyst’s properties: band gap (1.86–3.35 eV), coverage (11.53–99.63%), anatase crystallinity (0–48.5 nm) and ratio anatase:rutile (1:0 and 0:1). Machine vision using manual global, Otsu global and adaptive thresholding were compared for estimating the coverage of catalyst on a glass slide support.
Original languageEnglish
Pages (from-to)136-146
Number of pages11
JournalApplied Catalysis B: Environmental
Volume238
Early online date10 Jul 2018
DOIs
Publication statusPublished - 15 Dec 2018

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