Quantitative XRD characterisation and gas-phase photocatalytic activity testing for visible-light (indoor applications) of KRONOClean 7000®

D Tobaldi, M Seabra, G. Otero-Irurueta, Yolanda Miguel, Richard Ball, M. K. Singh, R. C. Pullar, J A Labrincha

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Abstract

Carbon-modified commercial anatase (KRONOClean 7000®) was quantitatively characterised with XRD for the first time – full phase composition (both crystalline and amorphous content) and microstructure. The material was found to be bimodal anatase, mostly 4 nm diameter, but with a small amount of a larger fraction between 12 and 15 nm. Absorption in the visible range was confirmed by UV-Vis analysis, whilst XPS showed that an aromatic carbon compound is at the origin of that absorption. Also, the photocatalytic activity of this commercial nano-TiO2 was assessed, monitoring the abatement of NOx
using a white LED lamp, irradiating exclusively in the visible region. Experiments simulated an indoor environment, highlighting the potential of this nano-TiO2 for adoption as a standard for visible-light photocatalytic activity, i.e. applications for innovative interior eco-building materials.
Original languageEnglish
Article number5
Pages (from-to)102911-102918
Number of pages8
JournalRSC Advances
Issue number124
Early online date26 Nov 2015
DOIs
Publication statusPublished - 30 Nov 2015

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    Tobaldi, D., Seabra, M., Otero-Irurueta, G., Miguel, Y., Ball, R., Singh, M. K., Pullar, R. C., & Labrincha, J. A. (2015). Quantitative XRD characterisation and gas-phase photocatalytic activity testing for visible-light (indoor applications) of KRONOClean 7000®. RSC Advances, (124), 102911-102918. [5]. https://doi.org/10.1039/c5ra22816f