期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 12, 期 11, 页码 8600-8606出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2012.6819
关键词
Sol-Gel Processes; Impedance; Optical Properties; TiO2
类别
资金
- FCT [SFRH/BD/45774/2008]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/45774/2008] Funding Source: FCT
Titanium oxide nanocrystals synthesized by the Pechini method were calcinated at temperatures between 300 and 1000 degrees C. The crystalline structure was analysed by X-ray diffraction, scanning electron microscopy (SEM) and Raman spectroscopy. A phase transition from the anatase to rutile crystalline phase was found to occur at temperatures near 500 degrees C. The samples were characterized by photoluminescence (PL) and dielectric spectroscopy. The influence of the calcination temperature on the visible and near infrared luminescence is discussed. A correlation between the structural properties, luminescence and dielectric properties are discussed.
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