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Hydrothermal preparation of TiO2-ZnO nano core-shell structure with quantum size effect

Asl, S. K ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1063/1.3663156
  3. Abstract:
  4. Nano sized ZnO on TiO 2 spherical core shells were prepared by using hydrothermal method. The particle size of initial TiO 2 was around 20 nm, and the specific surface area was 50 m2/gr. Different ratios of TiO 2 and ZnO applied to synthesize core shell particle. X-ray diffraction (XRD) used to phase characterization and crystalline size, scanning electron microscopy (SEM) to morphology and microstructure investigations. S. Brunauer, P. H. Emmett and E. Teller method (BET) to find specific surface area, Diffusive UV-visible-NIR spectrometry to bang gap calculations. The results indicate that powders with a shell of zinc oxide in specific range have the quantum size effect. Titanium oxide and zinc oxide have similar band gap, but TiO 2 could act as a template to produced 2D structure of ZnO with modified physical properties
  5. Keywords:
  6. Core Shell ; Hydrothermal ; Quantum Size Effect ; TiO 2 ; ZnO
  7. Source: AIP Conference Proceedings, 12 May 2011 through 15 May 2011 ; Volume 1400 , May , 2011 , Pages 425-428 ; 0094243X (ISSN) ; 9780735409712 (ISBN)
  8. URL: http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.3663156