Abstract
TiO2 nanoparticles (NPs) were prepared using flame synthesis and then characterized using transmission electron microscopy. We found that the flame method yields both crystalline TiO2 and amorphous TiO 2 NPs. TEM analysis revealed that only the crystalline TiO 2 NPs were coated with carbon. Based on this observation, we proposed a growth model for the diffusion and precipitation of carbon atoms in TiO 2 NPs. The optical properties of TiO2 NPs were investigated by performing valence electron energy loss spectrometry analysis. We observed that carbon-coated TiO2 NPs have higher absorption in the visible range due to their lower band-gap energy. © 2013 Elsevier B.V.
Original language | English (US) |
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Pages (from-to) | 134-138 |
Number of pages | 5 |
Journal | Materials Letters |
Volume | 108 |
DOIs | |
State | Published - Oct 2013 |
ASJC Scopus subject areas
- Mechanics of Materials
- General Materials Science
- Mechanical Engineering
- Condensed Matter Physics