| Texto completo | |
| Autor(es): |
Lustosa, Glauco Meireles Mascarenhas Morandi
;
Nogueira, Marcelo Vianna
;
Perazolli, Leinig Antonio
;
Zaghete, Maria Aparecida
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF THE INDIAN CHEMICAL SOCIETY; v. 101, n. 10, p. 8-pg., 2024-07-14. |
| Resumo | |
In this study (Zn,Nb)-doped SnO2 and (Zn,W)-doped SnO2 were synthetized using chemical route by calcination at 600 degrees C/2 h and milling at 500 rpm/1 h to verify its behavior as a photocatalyst. The powders showed high surface area: 57.1 m2/g for (Zn,Nb)-doped SnO2 and 74.3 m2/g for (Zn,W)-doped SnO2, both showed 10-25 nm of average diameter and rutile crystalline phase after morphological and structural characterizations. UV-vis spectroscopy indicated a band gap of 3.53 eV for (Zn,Nb)-SnO2 and 3.35 for (Zn,W)-SnO2. The photocatalytic activity was verified through the decomposition of Rodhamine B (RhB) aqueous solution under ultraviolet light radiation of 9W. After 120 min the efficiency of (Zn,Nb)-SnO2 was 68.5 % and for (Zn,W)-SnO2 was 71.1 %. Using a UV-lamp of 11W the efficiency in photodiscoloration of RhB aqueous solution increased to 83.2 % with (Zn,W)-doped SnO2 powder in a shorter irradiation time (90 min), indicating its potential use as nanostructured photocatalyst ceramic powder. (AU) | |
| Processo FAPESP: | 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais |
| Beneficiário: | Elson Longo da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |