Preparation and photocatalytic properties of hexagonal-shaped ZnO:Sm3+ by microwave-assisted hydrothermal method

Autor(es)

Carvalho, R. G. ; Tavares, M. T. S. ; Oliveira, F. K. F. ; Nascimento, R. M. ; Longo, E. ; Li, M. S. ; Paskocimas, C. A. ; Bomio, M. R. D. ; Motta, F. V.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 28, n. 11, p. 7943-7950, JUN 2017.
• Citações Web of Science: 2

Resumo

Novel 3D rods ZnO:Sm monophasic microcrystals have been synthesized by the microwave-assisted hydrothermal (MAH) method at 140 degrees C for 10 min. The experimental results revealed that concentration of samarium have a significant influence on the band gap and photocatalysis. On the other hand, the samarium in the ZnO semiconductor structure increases photodegradation activity. ZnO sample doped with 8% Sm3+ exhibited the best activity in the photodegradation of methylene blue dye when compared to that doped with 0-4 mol%. Enhanced photocatalytic activity was attributed to samarium, which inhibits the recombination of electron-hole pairs. (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