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Title

Quick assessment of the photocatalytic activity of TiO2 construction materials by nitroblue tetrazolium (NBT) ink

AuthorsJiménez-Relinque, Eva; Castellote, Marta
KeywordsTiO2
Photocatalysis
Construction
Cement
Emulsion
Photocatalytic activity
Electron
Reduction
Issue Date2019
PublisherElsevier
CitationConstruction and Building Materials 214: 1-8 (2019)
AbstractThe photoactivity of TiO2-bearing construction materials was assessed with nitroblue tetrazolium (NBT) ink. The photocatalytic reaction was monitored with UV–vis diffuse reflectance spectroscopy, colorimetry and digital image processing. The results delivered by the three datasets were linearly related, even though the experimental setup was inexpensive and involved only handheld instruments. The NBT reduction and ISO 22197-1 oxidative NOx removal findings also proved to be acceptably linear, may, then, be promising alternatives to conventional NOx photocatalytic performance testing. The advantages of the procedure proposed over conventional testing include convenience of use, time savings, in-situ applicability, readily distinguishable colour change and low cost.
Publisher version (URL)https://doi.org/10.1016/j.conbuildmat.2019.04.104
URIhttp://hdl.handle.net/10261/210856
DOI10.1016/j.conbuildmat.2019.04.104
ISSN0950-0618
E-ISSN1879-0526
Appears in Collections:(IETCC) Artículos
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