ZnO architectures synthesized by a microwave-assisted hydrothermal method and their photoluminescence properties
Nenhuma Miniatura disponível
Data
2010-06-03
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
Zinc oxide (ZnO) architectures were synthesized by an efficient Microwave-Assisted Hydrothermal (MAH) method using a cationic surfactant, cetyltrimethylammonium bromide (CTAB), as the structure-directing template. The ZnO nanostructures and microstructures were obtained under hydrothermal conditions using microwave radiation (2.45 GHz) at 130 degrees C for 30 min. ZnO samples prepared at the same temperature for 60, 120 and 180 min were also obtained. Scanning and transmission electron microscopy techniques confirm that these samples are composed of one-dimensional structures with a hexagonal cross-section grow in the (0002) direction. In addition, Fourier Transform Raman spectroscopy and photoluminescence (PL) measurements were used to investigate the structural changes evolving into ZnO crystals. Using the MAH method, ZnO was obtained at a lower temperature and a shorter time compared to the conventional hydrothermal method. (C) 2010 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Solid State Ionics. Amsterdam: Elsevier B.V., v. 181, n. 15-16, p. 775-780, 2010.