Abstract
Nanocrystalline opal-C has been synthesized, through sedimentation and fast drying. The formation of spherical silica nanoparticles was studied using X-ray diffraction (XRD), infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Its crystallite size is calculated using Scherrer equation and Guthrie equation (modeled through XRD patterns of several very pure opal samples). SEM shows nano-sized particles in the 60-90 nm diameter range. The results are compared with a natural opal-CT the so-called 'fire opal'.
Original language | English |
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Pages (from-to) | 1297-1302 |
Number of pages | 6 |
Journal | Digest Journal of Nanomaterials and Biostructures |
Volume | 7 |
Issue number | 3 |
State | Published - 2012 |
Keywords
- Fire opal
- OPAL-C
- Stöber method and scherrer equation