Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Photocatalytic Activity and RNO Dye Degradation of Nitrogen-doped TiO2 Prepared by Ionothermal Synthesis

Texto completo
Autor(es):
Angelo Pipi ; Gabriela Byzynski ; Luis Ruotolo
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 20, n. 3, p. 628-638, Jun. 2017.
Citações Web of Science: 2
Resumo

This work concerns the preparation a nitrogen-doped TiO2 by ionothermal synthesis methods and the photocatalytic studies. In this procedure, alkoxide was used as a titanium source, and a deep eutectic mixture of choline chloride and urea (molar ratio 1:2) served as a solvent and source of nitrogen. Different samples were synthesized varying the percentages of the eutectic mixture, titanium butoxide, and water, as well as temperature and reaction time. The catalysts were characterized by X-ray diffraction, Raman spectrometry, scanning electron microscopy, and diffuse reflectance spectroscopy. N-doping was confirmed by X-ray photoelectron spectroscopy. The photocatalytic activity of the N-TiO2 nanoparticles was evaluated in the oxidation of N,N-dimethyl-4-nitrosoaniline (RNO) dye. The best photocatalytic activity under illumination by UV and visible light was found for the catalysts prepared under reflux in the presence of water, and for the catalysts prepared hydrothermally using intermediate percentages of the nitrogen source (the eutectic mixture). (AU)

Processo FAPESP: 15/04511-5 - Avaliação da atividade fotocatalítica e mecanismos de degradação de heteroestruturas de semicondutores dopados e grafeno
Beneficiário:Gabriela Byzynski Soares
Linha de fomento: Bolsas no Brasil - Pós-Doutorado