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Synthesis of SnO2 nano-sheets by a template-free hydrothermal method
- Source :
-
Materials Letters . Oct2009, Vol. 63 Issue 24/25, p2085-2088. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: Square SnO2 nano-sheets have been successfully synthesized by a template-free hydrothermal method basing on the reaction between SnCl2 and NaOH in ethanol/water solution. The products have been characterized by X-ray diffraction, scanning electron microscope, and transmission electron microscope. The size and morphology of nano-sheets could be controlled by changing the ratio of ethanol to water. Compared experiments showed that the addition of NaOH was crucial to the formation of SnO2 nano-sheets, and the addition of glycol could induce the formation of cabbage-like structure. The nano-sheets show a strong absorption peak around 330 nm, corresponding to a band gap value of 3.75 eV. This blue shift of the band gap energy was possibly induced by the spatial confinement of excitons in the nano-sheet structures. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 63
- Issue :
- 24/25
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 43766160
- Full Text :
- https://doi.org/10.1016/j.matlet.2009.06.060