Preparation of poly(N-vinylpyrrolidone)-stabilized ZnO colloid nanoparticles.
We propose a method for the synthesis of a colloidal ZnO solution with poly(N-vinylpyrrolidone) (PVP) as stabilizer. Stable colloidal solutions with good luminescence properties are obtained by using PVP as stabilizer in the synthesis of ZnO nanoparticles by a sol-gel method assisted by ultrasound. Nanoparticles with sizes of 30-40 nm in a PVP matrix are produced as a solid product. The colloidal ZnO/PVP/methanol solution, apart from the most intense PL band at 356 nm coming from the PVP, exhibits a strong PL band at 376 nm (3.30 eV) which corresponds to the emission of the free exciton recombination in ZnO nanoparticles.
['Gutul|Tatyana|T|', 'Rusu|Emil|E|', 'Condur|Nadejda|N|', 'Ursaki|Veaceslav|V|', 'Goncearenco|Evgenii|E|', 'Vlazan|Paulina|P|']
poly(N-vinylpyrrolidone) colloidal solutions nanocomposite sol–gel zinc oxide