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SiO2-TiO2 Films Supported on Ignimbrite by Spray Coating for the Photocatalytic Degradation of NOx Gas and Methyl Orange Dye

AuthorsFlorez, D.M.M.G.; Ale, R.B.G.; Idme, A.F.H.; Alarcon, L.A.L.; Huallpa, E.A.; Castro Martín, Yolanda ; Apestegui, P.G.R.; Rodriguez Rodriguez, J.M.
Photocatalytic Degradation
Issue Date2020
PublisherHindawi Publishing Corporation
CitationInternational Journal of Photoenergy 2020 (2020)
Abstract[EN] n this work, a SiO-TiO coating, composed of different numbers of TiO and SiO layers, was fabricated by a spray-coating technique. The films were deposited onto ignimbrite rock and divided into two groups according to the number of SiO layers applied, 10 and 15 layers of SiO and 5 layers of TiO for each group. The morphology and chemical composition of the synthesized samples were characterized by field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectrometer (EDS), which reveal the successful SiO-TiO coating on ignimbrite. The photocatalytic activities of samples obtained were evaluated toward the decomposition of 3 ppm of methyl orange (MO). Finally, NO gas degradation was studied. The obtained results evidenced that the SiO and TiO coating improved the photocatalytic activity of ignimbrite.
Publisher version (URL)http://dx.doi.org/10.1155/2020/4756952
Identifiersdoi: 10.1155/2020/4756952
e-issn: 1687-529X
Appears in Collections:(ICV) Artículos
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