Novel Gd(OH)(3), GdOOH and Gd2O3 Nanorods: Microwave-Assisted Hydrothermal Synthesis and Optical Properties

作者：de Almeida Maciel Salomao; Bezerra dos Santos Maria Aparecida; Goncalves Rosana de Fatima; de Cassia Santos Maria Rita; de Azevedo Marques Ana Paula; Longo Elson; La Porta Felipe de Almeida; Pinatti Ivo Mateus; Penha Silva Maya Dayana; Godinho Mario Junior

来源：Materials Research, 2016, 19(5): 1155-1161.

DOI：10.1590/1980-5373-MR-2016-0252

• Gd(OH)(3)
• GdOOH
• Gd2O3
• nanorods

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.

• 出版日期2016-10