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- Title
Synthesis, characterization and photocatalytic applications of Zn-doped TiO nanoparticles by sol-gel method.
- Authors
Aware, Dinkar; Jadhav, Shridhar
- Abstract
Mesoporous, nanocrystalline, Zinc-doped TiO nanoparticles were synthesized by surfactant-assisted sol-gel method. The X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), and UV-VIS spectrometer techniques were used to characterize the synthesized products. XRD results confirm the formation of the anatase phase for the TiO nanoparticles, with crystallite sizes in the range of 12.6-18.1 nm. The small crystallite size and doping with Zinc ion inhibit phase transformation and promote the growth of the TiO anatase phase. The SEM and TEM micrographs revealed the spherical-like morphology with average diameter of about 12-18 nm which is in agreement with XRD results. The optical study shows that doping ions lead to an increase in the absorption edge wavelength and a decrease in the band gap energy of titania. Photocatalytic activity of the synthesized nanomaterials was successfully tested for photodegradation of methyl red as model pollutant under UV light. The photocatalytic activity results confirm that the doped nanoparticles show higher activity than undoped titania. The small grain size, high crystallinity, high specific surface area and decrease in the band gap energy of doped titania may be responsible for the high photocatalytic activity.
- Subjects
NANOPARTICLE synthesis; SOL-gel processes; SOL-gel materials; PHOTOCATALYTIC oxidation; PHOTOCHEMISTRY
- Publication
Applied Nanoscience, 2016, Vol 6, Issue 7, p965
- ISSN
2190-5509
- Publication type
Article
- DOI
10.1007/s13204-015-0513-8