| Texto completo | |
| Autor(es): |
Gloria, Diego Coelho Sanches
;
Brito, Carlos Henrique Vieira
;
Mendonca, Thais Aline Prado
;
Brazil, Tayra Rodrigues
;
Domingues, Raquel Aparecida
;
Vieira, Nirton Cristi Silva
;
Santos, Elias Barros
;
Goncalves, Maraisa
Número total de Autores: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Materials Chemistry and Physics; v. 305, p. 8-pg., 2023-05-22. |
| Resumo | |
Despite the advances in the photocatalytic degradation method to treat wastewater, obtaining efficient, stable, and cost-effective materials for this application is still challenging. The present study employed a simple and effective sol-gel method to prepare a photocatalyst consisting of titanium dioxide (TiO2) and activated carbon (AC). Four types of catalysts were obtained with different proportions of TiO2:AC, which were named TiO2/AC-05, TiO2/AC-10, TiO2/AC-30, and TiO2/AC-70. The surface area and the pore volume of TiO2 were significantly increased after incorporating AC, from 5% to 70%. X-ray diffraction and Raman spectroscopy showed that TiO2 is present in the anatase phase, with a particle size distribution centered at 11 nm, obtained by transmission electron microscopy (TEM). Moreover, TEM and X-ray photoelectron spectroscopy (XPS) analysis confirmed the interaction of both materials, resulting in a TiO2/AC nanocomposite combination. All four combination types were evaluated as the photocatalyst for Paracetamol degradation to investigate which material has the best photocatalytic performance. TiO2/AC-30 showed the highest efficient activity and achieved about 95% of the Paracetamol photodegradation. Therefore, the TiO2/AC-30 nanocomposite can be reused because it showed activity after five cycles of Paracetamol photodegradation. This study indicates that TiO2/AC-30 can be a good candidate for water purification containing emergent contaminants. (AU) | |
| Processo FAPESP: | 21/02348-0 - Síntese e caracterização de derivados de grafeno para aplicações multifuncionais |
| Beneficiário: | Carlos Henrique Vieira de Brito |
| Modalidade de apoio: | Bolsas no Brasil - Programa Capacitação - Treinamento Técnico |
| Processo FAPESP: | 19/13471-8 - Sistemas multifuncionais 3D para aplicações em tecnologias ambientalmente sustentáveis |
| Beneficiário: | Maraisa Gonçalves |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |