SrTi1-xSnxO3 Thin Films as Photocatalysts for Organic Dye Degradation: Influence of the Composition, Deposition Method, and Growth Orientation - Université de Rennes Accéder directement au contenu
Chapitre D'ouvrage Année : 2022

SrTi1-xSnxO3 Thin Films as Photocatalysts for Organic Dye Degradation: Influence of the Composition, Deposition Method, and Growth Orientation

Résumé

Alkaline earth titanates and stannates with perovskite structure—A(Ti/Sn)O3, A = Ca, Sr, Ba—have appeared as emerging materials for photocatalysis applications due to their outstanding physicochemical properties. Particularly, SrTiO3 and SrSnO3 have been widely applied for hydrogen production and degradation of organic pollutants. Despite this, little is known about photocatalysis using these materials in thin film form. In this chapter, polycrystalline SrTi1-xSnxO3 films were grown on amorphous silica substrate by chemical solution deposition (CSD) and pulsed laser deposition (PLD), and their photocatalytic activity was investigated towards an organic dye degradation. Sn content has a strong influence on the photocatalytic efficiency of the films. The higher photocatalytic photodegradation of the azo dye was achieved for SrSnO3 films, whatever the deposition method, with the highest efficiency for the film deposited by CSD with 55 and 90% of degradation and discoloration of the dye, respectively. Oriented and epitaxial SrSnO3 thin films were also grown on R-sapphire and (100) LaAlO3 single crystal substrates, respectively, and the photocatalytic behaviour was investigated as a function of the growth orientation. In addition, the feasibility to reuse the films in the photocatalytic process was evaluated. Our findings demonstrate the high potential use of SrSnO3 thin film materials in photocatalysis.

Domaines

Chimie
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Dates et versions

hal-04210002 , version 1 (18-09-2023)

Identifiants

Citer

A. de Oliveira, L. Chantelle, J. Figueiredo, I. de Sousa Filho, R. Lebullenger, et al.. SrTi1-xSnxO3 Thin Films as Photocatalysts for Organic Dye Degradation: Influence of the Composition, Deposition Method, and Growth Orientation. Research Topics in Bioactivity, Environment and Energy, Springer International Publishing, pp.87-109, 2022, Engineering Materials, ⟨10.1007/978-3-031-07622-0_3⟩. ⟨hal-04210002⟩
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