Surface mapping of photocatalytic activity in heterogeneous TiO2 films

Journal article

Lee, R., Park, S., Sathasivam, S., Mills, A., Parkin, I.P., Palgrave, R.P. and Quesada-Cabrera, R. (2024). Surface mapping of photocatalytic activity in heterogeneous TiO2 films. Journal of Materials Chemistry A. 15. https://doi.org/10.1039/D4TA03692A
AuthorsLee, R., Park, S., Sathasivam, S., Mills, A., Parkin, I.P., Palgrave, R.P. and Quesada-Cabrera, R.
Abstract

Recent developments in advanced spectroscopy and imaging techniques are shedding light into key charge transfer processes and kinetics in photocatalysis. Complementary photocatalytic reactions with local markers and surface structural mapping are essential to establish property-function correlations in photocatalytic materials. The current work describes a simple approach to probe heterogeneous photocatalytic surfaces using digital colorimetry and the well-established smart ink test, based on the photo-induced reduction of resazurin dye. Surface crystallographic phase mapping is carried out using valence band photoemission spectra (depth resolution of ca. 5 nm). The method has prospective implementation to pixel-by-pixel analysis using high resolution cameras at micron scale.

Year2024
JournalJournal of Materials Chemistry A
Journal citation15
PublisherRoyal Society of Chemistry (RSC)
ISSN2050-7488
2050-7496
Digital Object Identifier (DOI)https://doi.org/10.1039/D4TA03692A
Web address (URL)https://pubs.rsc.org/en/Content/ArticleLanding/2024/TA/D4TA03692A
Publication dates
Online18 Jul 2024
Publication process dates
Accepted15 Jul 2024
Deposited30 Jul 2024
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