دانلود مقاله Facile synthesis of WS2 inorganic fullerene-like nanomaterials from WS2 amorphous nanoparticles
سال انتشار: ۱۳۹۰
محل انتشار: پنجمین کنفرانس بین المللی پیشرفتهای علوم و تکنولوژی
تعداد صفحات: ۸
S.Salar Meshkat – Iran, Urmia, Urmia University of Technology
H.R Gholami –
The amorphous WS2 nanoparticles have been synthesized by a simple oxidation-reduction reaction in an aqueous solution. A series of products with different morphologies, such as WS2 nano spheres, inorganic fullerene-like nanospheres, nanorods and W bended rods, can be obtained by annealing the amorphous WS2 nanoparticles under N2 atmosphere under 400-1200 0C. These products have been characterized by X-ray diffraction, field emission scanning electronic microscopy, transmission electron microscopy and high-resolution transmission electron microscopy in detail. The possible transformation mechanism for the structure has been discussed based on the experimental results. In addition, the optical properties of IF-WS2 have also been performed by UV-vis absorption spectroscopy.