Please use this identifier to cite or link to this item:
http://repositorio.ufla.br/jspui/handle/1/28765| Title: | Nanocompósitos semicondutores ZnO/TiO2. Testes fotocatalíticos |
| Other Titles: | ZnO/TiO2 semiconductor nanocomposites. Photocatalytic tests |
| Keywords: | semiconductor nanocomposites Photocatalysis Raman spectroscopy Photodegradation Nanocompósitos de semicondutores Fotocatálise Espectroscopia Raman Fotodegradação |
| Issue Date: | 2010 |
| Publisher: | Sociedade Brasileira de Química |
| Citation: | SILVA, S. S.; MAGALHÃES, F.; SANSIVIERO, M. T. C. Nanocompósitos semicondutores ZnO/TiO2. Testes fotocatalíticos. Química Nova, São Paulo, v. 33, n. 1, p. 85-89, 2010. |
| Abstract: | Titanium dioxide is an efficient photocatalist, being possible to improve its efficiency with better charge separation which occurs when it is coupled with other semiconductors. Nanometric particles of ZnO were used to impregnate TiO2 P25 in order to optimize its photocatalytic properties. ZnO/TiO2 composites were obtained at different proportions and were characterized by X-ray diffraction (XRD), micro-Raman and diffuse reflectance spectroscopies, measurement of surface area (BET) and scanning electron microscopy (SEM). Raman spectroscopy data revealed a change on the TiO2 surface due the presence of ZnO which was observed by an enlargement of TiO2 peaks and a change on the relation rate between anatase and rutile phases of the composites. The photodegradation of azo-dye Drimaren red revealed better efficiency for ZnO/TiO2 3% nanocomposite and for ZnO pure. |
| URI: | http://repositorio.ufla.br/jspui/handle/1/28765 |
| Appears in Collections: | DQI - Artigos publicados em periódicos |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ARTIGO_Nanocompósitos semicondutores ZnO-TiO2. Testes fotocatalíticos.pdf | 547,59 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License
