English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/210857
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Rapid assessment of the photocatalytic activity in construction materials: Pros and cons of reductive inks and oxidative fluorescence probes versus standardized NOx testing

AuthorsJiménez-Relinque, Eva; Castellote, Marta
KeywordsPhotocatalytic activity
Terephthalic acid
Nitrogen oxide
Issue Date2019
CitationCatalysis Today (2019)
AbstractThe photocatalytic activity of a wide variety of photocatalytic construction materials with different intrinsic properties, mainly microstructure and TiO2 crystallographic phases, were obtained using alternative methods (Rz and NBT-reductive inks and TA-oxidative fluorescence probe) and the NOx removal standard ISO 22197-1:2007. The Rz-ink test was shown to be unsuitable for some of the materials due to spontaneous colour change in the dye upon contact with these (here denominated, reactive samples), in the absence of radiation. No such shortcomings were observed for either NBT-ink or TA-probe. Comparison of the three set of results showed a reasonably high correlation among the activities determined by the different methods, despite the wide variation in the characteristics of the photocatalytic materials tested, underlying reaction mechanisms and the physics and chemistry of the inter-phase contact (ink/probe/contaminant-substrate). The findings attest to the possible relationship between the rates of oxidative and reductive reactions in semiconductor photocatalysis. These alternative methods may be regarded as a new ‘cheap and simple’ approach to photocatalytic activity measurements.
Publisher version (URL)https://doi.org/10.1016/j.cattod.2019.07.043
Appears in Collections:(IETCC) Artículos
Files in This Item:
File Description SizeFormat 
catalystpreprint.pdf349,5 kBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.