Estudo da fotocatálise heterogênea sobre Ti/TiO2 na descoloração de corantes sintéticos
AUTOR(ES)
Cervantes, Thiago N. M., Zaia, Dimas A. M., Santana, Henrique de
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2009
RESUMO
The main goal of this paper was to study the degradation of synthetic dyes using photoelectrocatalytic properties of particulate films of TiO2 supported on plates of titanium and stimulated by UV-Vis radiation. The dyes decolorizations were measured using spectrophotometric methods to verify which the conditions on Ti/TiO2 electrode was the best for the photoelectrodegradation of them. The results showed that decolorization rates were higher than 90% during a period of 270 min. FT-IR spectroscopy showed that intermediate substances were formed after the decolorization and N=N group/aromatic structures were preserved independently of the specific structure of the dyes.
Documentos Relacionados
- Degradação fotoeletroquímica de corantes dispersos em efluente têxtil utilizando fotoanodos de Ti/TiO2
- Photoelectrocatalytical degradation of basic blue 41 dye using nanoporous semiconductor of Ti/TiO2
- Photoeletrocatalytic oxidation of anionic surfactant used in leather industry on nanoporous Ti/TiO2 eletrodes
- A new and simple electrochemically assisted photocatalysis sensor of hydrazine using a Ti/TiO2 electrode
- Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes