KnE Materials Science

ISSN: 2519-1438

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Photocatalytic Activity of LaTi1−xFexO3 Perovskite-Type Oxides Under UV and Visible Light

Published date: Aug 10 2022

Journal Title: KnE Materials Science

Issue title: 1st International FibEnTech Congress (FibEnTech21) – New Opportunities for Fibrous Materials in the Ecological Transition

Pages: 108–114

DOI: 10.18502/kms.v7i1.11614

Authors:

Maria João Nunesmaria.nunes@ubi.ptFibEnTech-UBI and Departament of Chemistry, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal

André RodriguesDepartament of Chemistry, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201- 001, Covilhã, Portugal

Paulo FiadeiroFibEnTech-UBI and Departament of Physics, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal

Ana LopesFibEnTech-UBI and Departament of Chemistry, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal

Maria José PachecoFibEnTech-UBI and Departament of Chemistry, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal

Lurdes CiríacoFibEnTech-UBI and Departament of Chemistry, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal

Abstract:

LaTi1−xFexO3 (x = 0, 0.2, 0.4, 0.6, 0.8 and 1) perovskite-type oxide samples were synthesized by the solid state reaction method and characterized, and their photocatalytic activity was tested in the degradation of Acid Orange 7 under ultraviolet and visible light. The oxides were successfully synthesized and the XRD results showed a phase change from monoclinic to orthorhombic, with an increase in Fe content (x), with LaTi0.8Fe0.2O3 and LaTi0.6Fe0.4O3 samples presenting both phases. All samples presented low photocatalytic activity under visible light radiation, with a maximum Abs484nm removal of 2.9% for LaFeO3 after one hour. The best results were obtained under ultraviolet radiation, for all samples, with the best photocatalytic activity exhibited by the La2Ti2O7 perovskite, with 44.6% Abs484nm removal after one hour.

Keywords: perovskites, LaTi1−xFexO3, photocatalysis, Acid Orange 7

References:

[1] Yang Y, Sun Y, Jiang Y. Structure and photocatalytic property of perovskite and perovskite-related compounds. Materials Chemistry and Physics. 2006;96(2-3):234- 239. https://doi.org/10.1016/j.matchemphys.2005.07.007

[2] Zhu J, Li H, Zhong L, Xiao P, Xu X, Yang X, Zhao Z, Li J. Perovskite oxides: Preparation, characterizations, and applications in heterogeneous catalysis. ACS Catalysis. 2014;4(9):2917-2940. https://doi.org/10.1021/cs500606g

[3] Wang W, Tadé MO, Shao Z. Research progress of perovskite materials in photocatalysis- and photovoltaics-related energy conversion and environmental treatment. Chemical Society Reviews. 2004;44:5371-5408. https://doi.org/10.1039/c5cs00113g

[4] Hou L, Sun G, Liu K, Li Y, Gao F. Preparation, characterization and investigation of catalytic activity of Li-doped LaFeO3. Journal of Sol-Gel Science and Technology. 2006;40:9-14. https://doi.org/10.1007/s10971-006-8368-9

[5] Hu R, Li C, Wang X, Sun Y, Jia H, Su H, Zhang Y. Photocatalytic activities of LaFeO3 and La2FeTiO6 in p-chlorophenol degradation under visible light. Catalysis Communications. 2012;29:35-39. https://doi.org/10.1016/j.catcom.2012.09.012

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