| Journal: | Revista Eletronica científica da UERGS |
| Database: | |
| System number: | 000530187 |
| ISSN: | 2448-0479 |
| Authors: | Moura, Diego Soares de1 Garcia, Irene Teresinha Santos1 |
| Institutions: | 1Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul. Brasil |
| Year: | 2022 |
| Volumen: | 8 |
| Number: | 3 |
| Pages: | 218-227 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | AbstractThe multiple forms of structuring transition metal anions in solution are important aspects to be taken into account in obtaining oxides of these metals by the sol-gel method. The formation of polyanions in aqueous media can produce a variety of structures in the solid state. Films were obtained through sol-gel method with sodium tungstate as precursor and dodecyltrimethylammonium chloride (DTAC) as structuring agent, after calcined at 700 °C in air. The films, structured as nanospheres, were composed mainly of triclinic sodium tetratungstate and monoclinic tungsten oxide. The cationic surfactant interacts in aqueous media with the precursor, affecting the obtained films' final morphology, without affecting their crystal structure. Their photocatalytic properties were also evaluated.Keywords: Colloidal synthesis; sol-gel; photocatalysis. |
| Disciplines: | Química |
| Full text: | Texto completo (Ver PDF) |
