Incorporation of 12-Tungstophosphoric acid in Titania spheres and fabrication of core-shell Polyoxotungstate/Titania nanostructures

International Journal of Nano Dimension

مقاله 3، دوره 5، شماره 2، تیر 2014، صفحه 105-112   

نوع مقاله: Reasearch Paper

شناسه دیجیتال (DOI): 10.7508/ijnd.2014.02.002

نویسندگان

M. Seyedsadjadi^{* 1}؛ S. Rashidzadeh²؛ N. Farhadyar³

¹Department of chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran

²Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran

³Department of Chemistry, Varamin –Pishva Branch, Islamic Azad University, Varamin, Iran

چکیده

Core-shell 12-tungstophosphoric acid/TiO₂ (HPW/TiO₂) nanoparticles at 10 and 20% of HPW have been synthesized by simple in-situ sol- gel method. Characterization of the samples was carried out by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared (FTIR). The X-ray diffraction patterns of as prepared solid samples, indicated characteristic peaks of titania with additional peaks concerning to HPW in a very low intensities. This result in addition to the FTIR and SEM - EDX analysis data confirmed incorporation of HPW / TiO₂ nanostructure in spherical morphology with a particle size of around 25 nm.

کلیدواژه‌ها

Polyoxometalates؛ Phosphotungstic acid؛ Keggin type structure؛ Inorganic-inorganic nanostructure؛ Titania phase