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

Author(s)

Maciel Salomão de Almeida ^[1] ; Maria Aparecida Bezerra dos Santos ^[2] ; Rosana de Fátima Gonçalves ^[3] ; Maria Rita de Cássia Santos ^[4] ; Ana Paula de Azevedo Marques ^[5] ; Elson Longo ^[6] ; Felipe de Almeida La Porta ^[7] ; Ivo Mateus Pinatti ^[8] ; Maya Dayana Penha Silva ^[9] ; Mario Junior Godinho

Affiliation

^[1] Universidade Federal de Goiás. Unidade Acadêmica Especial de Física e Química - Brasil

^[2] Universidade Federal de Goiás. Unidade Acadêmica Especial de Física e Química - Brasil

^[3] Universidade Federal de São Paulo - Brasil

^[4] Universidade Federal de Goiás. Unidade Acadêmica Especial de Física e Química - Brasil

^[5] Universidade Federal de São Paulo - Brasil

^[6] Universidade Estadual Paulista. Instituto de Química. Laboratório Interdisciplinar de Eletroquímica e Cerâmica - Brasil

^[7] Universidade Tecnológica Federal do Paraná - Brasil

^[8] Universidade Federal de São Carlos - Brasil

^[9] Universidade Federal de São Carlos - Brasil

• Document type: Journal article
• Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 19, n. 5, p. 1155-1161, 2016-08-29.

Abstract

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. (AU)

• FAPESP's process: 13/07437-5 - Production and characterization of nanostructures ceramic materials pure and hybrids
• Grantee: Ana Paula de Azevedo Marques
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC