Synthesis, microstructure and optical characterization of zirconium oxide nanostructures
| Autor: | G.H. Du, Surendra K. Saxena, Latha Kumari, Wei Li, D Z Wang, R. Selva Vennila |
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| Rok vydání: | 2009 |
| Předmět: |
Nanostructure
Photoluminescence Materials science Absorption spectroscopy Band gap Process Chemistry and Technology Analytical chemistry Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials Materials Chemistry Ceramics and Composites Crystallite Absorption (chemistry) Monoclinic crystal system |
| Zdroj: | Ceramics International. 35:2401-2408 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2009.02.007 |
| Popis: | Zirconium oxide (ZrO2) nanostructures were synthesized by hydrothermal route. Surface morphology analysis depicts the formation of the nanobars and hexagonal-shaped nanodiscs at different synthesis conditions. The structural analysis confirms that the as-synthesized ZrO2 product is of pure monoclinic phase (m-ZrO2) with crystallite size of about 25 nm. The product consists of monodispersed nanoparticles of uniform composition,highpurity,andcrystallinity.TheRamanspectraarequantitativelyanalyzedandtheobservedpeaksareattributedtovariousvibration modes of the m-ZrO2. The UV‐vis absorption spectrum showed a strong absorption peak at about 292 nm and the estimated optical band gap was around 3.57 eV. Photoluminescence (PL) spectrum of ZrO2 nanostructure showed a strong and broad emission peak at around 410 nm at room temperature, which can be attributed to the ionized oxygen vacancy in the material. # 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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