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Title: Comparison of supported TiO2 catalysts in the photocatalytic degradation of NOx
Authors: Hernández Rodríguez, M. J. 
Pulido Melián, Elisenda 
González Díaz, Oscar Manuel 
Araña Mesa, Francisco Javier 
Macías Azaña, Manuel
González Orive, Alejandro
Doña Rodríguez, José Miguel 
UNESCO Clasification: 2301 Química analítica
Keywords: Dip-coating
Issue Date: 2016
Publisher: 1381-1169
Project: Hormigones Fotocatalíticos 
Journal: Journal of Molecular Catalysis A: Chemical 
Abstract: A comparison is made in this study of the effectiveness of various commercial catalysts in the oxidation of NOx by heterogeneous photocatalysis. The following catalysts were considered: Aeroxide TiO2 P25, Aeroxide TiO2 P90, Hombikat UV-100, Kronos vlp7000, CristalACTIV PC105, CristalACTIV PC500, Kemira 650 and Anatasa Aldrich. All catalysts were deposited by a dip-coating technique onto borosilicate 3.3 glass plates. Optimization of catalyst load showed no significant enhancement of photoactivity, in general, above a deposited mass of 1.16 mg cm-2. Differences between photocatalyst activity were more apparent at longer illumination times. Photoactivity decreased in the presence of humidity and differences in the adsorbed products were detected. Photocatalyst activity was strongly influenced by specific surface area, with the best results obtained by the catalysts with the largest surface area, namely the PC500, Hombikat and Kronos. Photocatalyst stability was demonstrated in successive reuse cycles.
ISSN: 1381-1169
DOI: 10.1016/j.molcata.2015.12.007
Source: Journal of Molecular Catalysis A: Chemical [ISSN 1381-1169], v. 413, p. 56-66
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