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Ethiopian natural zeolites for photocatalysis

AuthorsGuesh, Kiros; López-Muñoz, María José; Márquez Álvarez, Carlos ; Chebude, Yonas; Díaz Carretero, Isabel
TiO2 loading
Methyl orange
Band gap energy
Natural zeolite
Issue Date2015
PublisherChemical Society of Ethiopia
CitationBulletin of the Chemical Society of Ethiopia 29(3): 431-440 (2015)
AbstractThe combination of zeolites and photochemistry has recently shown excellent results due to the special structure of the zeolites that helps a better use of the solar energy improving the selectivity of the chemical reactions carried out. There are several reports on the preparation of TiO2 confined nanoparticles in synthetic zeolites. However, very few reports are found on the use of natural zeolites. Zeolites are a vast natural resource in Ethiopia that remains unexploited. Their microporous structure can accommodate a wide variety of cations such as sodium, potassium and magnesium among others. The main objective of our work was to test the potential use of the naturally occurring zeolites, with high content in titanium, as photocatalysts. The samples have been characterized by X-ray diffraction (XRD), chemical analysis (ICP-OES), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (UV-Vis) and photocatalytic activities of the samples were tested in photocatalytic degradation of methyl orange (MO).
Publisher version (URL)http://dx.doi.org/10.4314/bcse.v29i3.11
Appears in Collections:(ICP) Artículos
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