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- Title
Controllable synthesis and optical properties of SnO<sub>2</sub> core-shell microspheres.
- Authors
Haitao Chen; Dan Zhang; Guoshuai Chen; Jun Zhu; Xiaobing Chen; Xianghua Zeng
- Abstract
SnO2 core-shell microspheres were synthesised via a hydrothermal method with hexamethylenetetramine as a surfactant. The structure and the morphology of the products were characterised by X-ray diffraction, field-emission scanning electron microscopy and transmission electron microscopy. The results indicated that the overall dimension of the core-shell microspheres and the diameter of the spherical nuclei could be adjusted by changing the concentration of NaOH and hexamethylenetetramine or the reaction time. Based on the time dependent reactions, a possible growth mechanism is proposed. It is believed that the Kirkendall effect plays an important role in the formation of the core-shell structure. The optical properties of the core-shell structure microspheres were also studied through the photoluminescence and the Raman spectra.
- Subjects
OPTICAL properties; TIN oxides; MICROSPHERES; X-ray diffraction; METHENAMINE; SCANNING electron microscopy
- Publication
Micro & Nano Letters (Wiley-Blackwell), 2014, Vol 9, Issue 4, p243
- ISSN
1750-0443
- Publication type
Article
- DOI
10.1049/mnl.2013.0717