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João Nunes, M., Rodrigues, A., Fiadeiro, P., Lopes, A., José Pacheco, M., & Ciríaco, L. (2022). Photocatalytic Activity of LaTi1−xFexO3 Perovskite-Type Oxides Under UV and Visible Light. KnE Materials Science, 7(1), 108–114. https://doi.org/10.18502/kms.v7i1.11614

https://doi.org/10.18502/kms.v7i1.11614

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authors

  • Maria João Nunes

    Maria João Nunes

    FibEnTech-UBI and Departament of Chemistry, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal
  • André Rodrigues

    André Rodrigues

    Departament of Chemistry, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201- 001, Covilhã, Portugal
  • Paulo Fiadeiro

    Paulo Fiadeiro

    FibEnTech-UBI and Departament of Physics, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal
  • Ana Lopes

    Ana Lopes

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

    Maria José Pacheco

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

    Lurdes Ciríaco

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

Published Date

  • Aug 10, 2022

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

KnE Materials Science / 1st International FibEnTech Congress (FibEnTech21) – New Opportunities for Fibrous Materials in the Ecological Transition / Pages 108–114

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