| Texto completo | |
| Autor(es): |
de Paiva, Rafael Texeira
[1]
;
Nogueira, Icamira Costa
[2]
;
Sczancoski, Julio Cesar
[3]
;
Lemos, Pablo Santana
[3]
;
Elias Matos, Jose Milton
[1]
;
Santos, Reginaldo Silva
[4]
;
Longo, Elson
[5]
;
Cavalcante, Laecio Santos
[1, 4]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] Univ Fed Piaui, Programa Posgrad Ciencia Mat PPCM, BR-64049550 Teresina, PI - Brazil
[2] ICE Univ Fed Amazonas, Ave Rodrigo Otavio Japiim, POB 670, BR-69077000 Manaus, Amazonas - Brazil
[3] Univ Fed Sao Carlos, DQ UFSCar, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[4] Univ Estadual Piaui, PPGQ GERATEC, Joao Cabral 2231, POB 381, BR-64002150 Teresina, PI - Brazil
[5] Univ Estadual Paulista, Dept Quim Fis, BR-14800060 Araraquara, SP - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO; v. 59, n. 1, p. 2-14, JAN-FEB 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
In this communication, diindium tristungstate (In2W3O12) and hexaindium tungstate (In6WO12) powders were synthesized by the co-precipitation method at different pH values and heat treatment at 1073 K for 2 h. X-ray diffraction patterns and Rietveld refinements were employed to analyze the long-range structural ordering as well as quantify the presence crystallographic phases, respectively. All powders obtained in pH ranging from 2 to 3.5 exhibited a mixture of In2W3O12 and gamma-tungsten oxide (gamma-WO3) phases. When prepared at pH close to 4, the powders presented both In2W3O12 and In6WO12 phases. All these crystalline structures were simulated in a three-dimensional visualization program by adopting the Rietveld refinements analysis as input data. The ultraviolet-visible spectra were employed to estimate the optical band gap energy of all powders for the first time. (C) 2019 Published by Elsevier Espana, S.L.U. on behalf of SECV. (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 |
| Processo FAPESP: | 12/14004-5 - Investigação das propriedades fotoluminescentes e fotocatalíticas de pós de BaWO4 e BaMoO4 puros e dopados com Mn, Cu e Zn |
| Beneficiário: | Júlio César Sczancoski |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |