Photocatalytic Degradation of Malachite Green Dye and Pharmaceuticals Using Co:TiO2 Thin Films

Jonatan Perez-Alvarez; Dora Alicia Solis Casados; Saul Romero; Luis Escobar-Alarcón

doi:10.4028/www.scientific.net/AMR.976.212

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 976Photocatalytic Degradation of Malachite Green Dye...

Photocatalytic Degradation of Malachite Green Dye and Pharmaceuticals Using Co:TiO₂ Thin Films

Abstract:

The crossed beam pulsed laser deposition technique was successfully used to prepare Co:TiO₂ thin films with different cobalt concentrations and a band gap as low as 2.0 eV. The aim of this work is to report the application of TiO₂ thin films modified with different amounts of cobalt (Co:TiO₂) as catalysts in the degradation of a malachite green (MG) solution as well as in solutions containing pharmaceutical wastes such as the analgesics diclofenac and naproxen. For catalyst activation an UV lamp with emission at 254 and 404 nm was used as the energy source. It was followed the decrease in the characteristic absorption band of the different polluted solutions over the reaction time. In general terms, the obtained results showed that samples containing cobalt exhibited better photocatalytic performance than the undoped TiO₂ films. An optimal cobalt content in the film was found that provided the highest degradation for the different solutions.

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Periodical:

Advanced Materials Research (Volume 976)

Pages:

212-216

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.976.212

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Online since:

June 2014

Authors:

Jonatan Perez-Alvarez, Dora Alicia Solis Casados*, Saul Romero, Luis Escobar-Alarcón

Keywords:

CBPLD, Malachite Green Dye, Photocatalyst, Thin Film, TiO₂

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