Solvothermal synthesis and photocatalytic activity of BiOBr Microspheres with Hierarchical Morphologies

Authors

  • Adriana C. Mera Instituto de Investigación Multidisplinario en Ciencia y Tecnología, Universidad de La Serena, Benavente 980, La Serena, Chile. Laboratorio de Química Analítica e Investigación en Fotoquímica y Productos Naturales, Departamento de Química, Facultad de Ciencias, Universidad de La Serena, La Serena, Chile.
  • Carlos Anibal Rodríguez Instituto de Investigación Multidisplinario en Ciencia y Tecnología, Universidad de La Serena, Benavente 980, La Serena, Chile. Laboratorio de Química Analítica e Investigación en Fotoquímica y Productos Naturales, Departamento de Química, Facultad de Ciencias, Universidad de La Serena, La Serena, Chile.
  • Héctor Valdés Universidad Católica de la Santísima Concepción, Facultad de Ingeniería, Laboratorio de Tecnologías Limpias, Concepción, Chile.
  • Andres Felipe Jaramillo Advanced Nanocomposites Research Group (GINA). Hybrid Materials Laboratory (HML). Department of Materials Engineering (DIMAT), Faculty of Engineering, University of Concepcion, 270 Edmundo Larenas, Box 160-C, Concepcion, Chile 4070409.
  • David Rojas Advanced Nanocomposites Research Group (GINA). Hybrid Materials Laboratory (HML). Department of Materials Engineering (DIMAT), Faculty of Engineering, University of Concepcion, 270 Edmundo Larenas, Box 160-C, Concepcion, Chile 4070409.
  • Manuel F. Melendrez Advanced Nanocomposites Research Group (GINA). Hybrid Materials Laboratory (HML). Department of Materials Engineering (DIMAT), Faculty of Engineering, University of Concepcion, 270 Edmundo Larenas, Box 160-C, Concepcion, Chile 4070409.

DOI:

https://doi.org/10.17344/acsi.2018.4181

Keywords:

BiOBr MicSphe, solvothermal, properties, photocatalytic activity

Abstract

BiOBr microspheres with hierarchical morphologies (BiOBr-MicSphe) has potential application in heterogeneous photocatalysis for decontamination of water and air. For this reason, the synthesis, characterization an evaluation of photocatalytic activity of these materials become important. In this article, BiOBr-MicSphe were synthesized using different ranges of reaction temperature (120-200 ºC) and reaction time (12 h - 24 h). Samples grown at 145 °C and 18 h showed the higher photocatalytic activity on gallic acid degradation. Morphological properties, chemical composition and structural analysis revealed that sample with higher photocatalytic activity exhibited a microspherical morphology with pure BiOBr tetragonal phase. Besides, adsorption-desorption analysis showed a smaller pore diameter for sample grown at 145 °C and 18 hrs. The results showed that the reaction temperature has a strong influence on the different properties of the material, affecting the photocatalytic activity.

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Published

19.06.2018

Issue

Vol. 65 No. 2 (2018)

Section

Materials science

License

Except where otherwise noted, articles in this journal are published under the Creative Commons Attribution 4.0 International License