Browsing by Author "Retamoso Llamas Claudia Patricia"

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    Effects of two chemical treatments on the optical properties of the rutile crystalline phase.Efectos de dos tratamientos químicos sobre las propiedades ópticas de la fase cristalina de rutilo
    (2022) Retamoso Llamas Claudia Patricia; Escalona Burgos, Néstor Guillermo; González Hormazábal, Marcelo Andrés; Barrientos Poblete, Lorena Julieta
    © 2022, Universidad de Los Andes. All rights reserved.The optical properties of the photocata-lysts are related to the band gap since it impacts the results of contaminant removal effectiveness during irradiation. Among the photocatalysts, anatase has been studied more than rutile. In the present work, chemical treatments were carried out on rutile to shift the band gap towards the visible zone of the electromagnetic spectrum. The results suggest that the incipient impregnation with Fe salts effectively shifts the energy gap to the visible area, significantly decreasing the maximum absorbance levels. While the partial reduction of rutile increases the absorbance levels when carried out at a temperature of 250 °C.