Quantitative XRD characterisation and gas-phase photocatalytic activity testing for visible-light (indoor applications) of KRONOClean 7000 (R)
authors Tobaldi, DM; Seabra, MP; Otero-Irurueta, G; de Miguel, YR; Ball, RJ; Singh, MK; Pullar, RC; Labrincha, JA
nationality International
journal RSC ADVANCES
keywords CARBON-MODIFIED TITANIA; ORGANIC CONTAMINANTS; ANATASE TIO2; NANO-TITANIA; DEGRADATION; DIOXIDE; BEHAVIOR; OXIDES; SEMICONDUCTOR; REMOVAL
abstract Carbon-modified commercial anatase (KRONOClean 7000 (R)) 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 similar to 4 nm diameter, but with a small amount of a larger fraction between similar to 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.
publisher ROYAL SOC CHEMISTRY
issn 2046-2069
year published 2015
volume 5
issue 124
beginning page 102911
ending page 102918
digital object identifier (doi) 10.1039/c5ra22816f
web of science category Chemistry, Multidisciplinary
subject category Chemistry
unique article identifier WOS:000366162300097

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