Synthesis and characterization of ZnO/SiO{sub 2} core/shell nanocomposites and hollow SiO{sub 2} nanostructures
- Department of Physics, Central China Normal University, Wuhan 430079 (China)
- Faculty of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan 430074 (China)
In this paper, we prepared the ZnO nanoparticles by a simple hydrothermal method and fabricated the ZnO/SiO{sub 2} core/shell nanostructures through a sol-gel chemistry process successfully. The hollow SiO{sub 2} nanostructures were obtained by selective removal of the ZnO cores. The structure, morphology and composition of the products were determined by the techniques of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM). The results indicated that the ZnO nanoparticles were sphere-like shape with the average size of 60 nm and belonged to hexagonal wurtzite crystal structure. With the coating of SiO{sub 2}, the vibration modes of Si-O-Si and Si-OH were found. Furthermore, the measurement results of optical properties showed that spectra of bare ZnO nanoparticles and ZnO/SiO{sub 2} core/shell nanocomposites exhibited similar emission features, including a blue emission peak and an orange emission band.
- OSTI ID:
- 21199686
- Journal Information:
- Materials Research Bulletin, Vol. 44, Issue 2; Other Information: DOI: 10.1016/j.materresbull.2008.04.024; PII: S0025-5408(08)00154-2; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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