<b>Evaluation of the photocatalytic activity of Nb<sub>2</sub>O<sub>5</sub></b> - DOI: 10.4025/actascitechnol.v32i1.3923

Authors

  • Veronice Slusarski Santana UEM
  • Eduardo Ossamu Mitushasi UEM
  • Nádia Regina Camargo Fernandes-Machado UEM

DOI:

https://doi.org/10.4025/actascitechnol.v32i1.3923

Keywords:

photocatalysis, NbO, impregnation, beads glass, sucrose

Abstract

As heterogeneous photocatalysis has proved to be one of the most promising methods for the treatment of effluents, the study of photocatalytic activity of new catalysts is of great interest. Thus, degradation tests of burnt sugar solution were conducted through using 2 g of Nb2O5 and TiO2, massic, and Nb2O5 impregnated in glass beads (5.0, 10 and 15% Nb2O5 glass-1) under UV radiation for 168 hours. TiO2 and Nb2O5 were submitted to the agglomeration process (particle size: 0.210 and 0.297 mm) and calcined at 500ºC for 5h. Nb2O5 was solubilized in oxalic acid (0.5 mol L-1) at 70ºC for 8h, mixed with the glass beads, dried at 110ºC for 12h and calcined at 500ºC for 5h. The efficiency of the photocatalytic process was evaluated by UV-VIS spectrophotometry and DNS method. The results showed that catalysts of Nb2O5 are promising for application in photocatalysis, mainly 15% Nb2O5 glass-1, which presented similar results to TiO2.

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Author Biography

Nádia Regina Camargo Fernandes-Machado, UEM

Exerce a função de professora no Departamento de Engenharia Quí­mica na Universidade Estadual de Maringá. Principais temas de pesquisa: produção de Hidrogênio pela reforma do etanol com vapor d água; Catálise Ambiental (fotocatálise) e Sí­ntese de Zeólitas com aplicações em catálise e purificação de efluentes por adsorção e troca iônica. Já orientou 52 trabalhos de Iniciação Cientí­fica, 15 dissertações de Mestrado e 5 teses de Doutorado. Publicou 27 artigos em revistas especializadas e 177 comunicações em eventos cientí­ficos Currí­culo Lattes

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Published

2009-11-13

How to Cite

Santana, V. S., Mitushasi, E. O., & Fernandes-Machado, N. R. C. (2009). <b>Evaluation of the photocatalytic activity of Nb<sub>2</sub>O<sub>5</sub></b> - DOI: 10.4025/actascitechnol.v32i1.3923. Acta Scientiarum. Technology, 32(1), 55–61. https://doi.org/10.4025/actascitechnol.v32i1.3923

Issue

Vol. 32 No. 1 (2010)

Section

Chemical Engineering

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