Artigo
Novel Gd(OH)(3), GdOOH and Gd2O3 Nanorods: Microwave-Assisted Hydrothermal Synthesis and Optical Properties
Fecha
2016Registro en:
Materials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 19, n. 5, p. 1155-1161, 2016.
1516-1439
S1516-14392016000501155.pdf
S1516-14392016000501155
10.1590/1980-5373-MR-2016-0252
WOS:000385626000027
Autor
de Almeida, Maciel Salomao
Bezerra dos Santos, Maria Aparecida
Goncalves, Rosana de Fatima [UNIFESP]
de Cassia Santos, Maria Rita
de Azevedo Marques, Ana Paula [UNIFESP]
Longo, Elson
La Porta, Felipe de Almeida
Pinatti, Ivo Mateus
Penha Silva, Maya Dayana
Godinho, Mario Junior
Institución
Resumen
We present a study of the controlled synthesis and optical properties of single-crystals Gd(OH)(3), GdOOH and Gd2O3 nanorods. In this work, Gd(OH)(3) nanorods were synthesized by a simple and fast microwave-assisted hydrothermal method. This process combined with the thermal decomposition oxidation of Gd(OH)(3) nanorods as precursors enabled the preparation of single-crystalline GdOOH and Gd2O3 structures with well-defined morphology at low temperatures. The crystal structure dependence on the optical properties was investigated. We observed a green shift effect on the photoluminescence (PL) emission spectra from Gd(OH)(3) to Gd2O3 nanorods, which can be attributed to different types of surface defects, as well as intrinsic properties that contribute significantly to the modified PL behavior.