| Full text | |
| Author(s): |
Flores, Efracio Mamani
[1]
;
Raubach, Cristiane W.
[1]
;
Gouvea, Rogerio
[1]
;
Longo, Elson
[2]
;
Cava, Sergio
[3]
;
Moreira, Mario L.
[1]
Total Authors: 6
|
| Affiliation: | [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
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Materials Chemistry and Physics; v. 173, p. 347-354, APR 15 2016. |
| Web of Science Citations: | 6 |
| Abstract | |
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) | |
| FAPESP's process: | 09/17752-0 - Energy conversion through nano and mesocrystals of BaZrxHf1-xO3: A theoretical and experimental approach. |
| Grantee: | Mário Lúcio Moreira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |