| Texto completo | |
| Autor(es): |
Flores, Efracio Mamani
[1]
;
Raubach, Cristiane W.
[1]
;
Gouvea, Rogerio
[1]
;
Longo, Elson
[2]
;
Cava, Sergio
[3]
;
Moreira, Mario L.
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Fed Pelotas, Dept Fis, IFM, CCAF, Campus Capao do Leao POB 354, BR-96010970 Pelotas, RS - Brazil
[2] Univ Estadual Paulista, INCTMN UNESP, POB 355, BR-14801907 Araraquara, SP - Brazil
[3] Univ Fed Pelotas, CCAF, Ctr Desenvolvimento Tecnol, Rua Felix da Cunha 809, Pelotas, RS - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Materials Chemistry and Physics; v. 173, p. 347-354, APR 15 2016. |
| Citações Web of Science: | 6 |
| Resumo | |
In the present work, are reported the experimental study of ZnO@ZnS core-shell synthesised by a microwave-assisted solvothermal (MAS) method. Some synthesis parameters such as, time, precursor concentration and temperature were fixed. In order to investigate the effect of growing shell on the structural and optical properties, the samples were grown with two different solvent (water or ethylene glycol). The characterizations were performed by X-ray diffraction, absorption spectroscopy in the UV -vis range, scanning electron microscopy, and photoluminescence spectroscopy. The results show that both ZnO and ZnS diffractions are present for all samples, however the crystallinity degree of ZnS shell are too low. The better decorations of ZnS (shell), on the ZnO (core) are obtained for ethylene glycol (EG) solvent, which is verified through FE-SEM images of ZnO@ZnS (EG). On the other hand, non morphological solvent dependence was observed for ZnO multi-wires. Also the luminescent emission for decorated system in water were more intense and leads to form a type-II band alignment for ZnO@ZnS core shell system. (C) 2016 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 09/17752-0 - Conversão de energia utilizando nano e mesocristais de BaZrxHf1-xO3: uma abordagem teórica e experimental. |
| Beneficiário: | Mário Lúcio Moreira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |