ANATASE NANOPARTICLES AND PROCESS OF SYNTHESIS FOR OBTAINING ANATASE NANOPARTICLES

The subject of the invention are anatase nanoparticles and a process of synthesis for obtaining anatase nanoparticles from metatitanium acid which is a semifinished product in the production of TiO2 pigments. The synthesis of anatase nanoparticles from metatitanium acid is based on the so called gel-sol process. Anatase nanoparticles according to the invention are very fine particles in the form of an acid/neutral suspension, where anatase nanoparticles are polycrystalline and the crystallites exhibit isothropic morphology and have a diameter of about 4-5 nm, while anatase nanoparticles themselves have a diameter between 30 and 80 nm and a specific surface of 200 m2/g or more. Predmet izuma so nanodelci anatasa in postopek sinteze za pridobivanje nanodelcev anatasa iz metatitanove kisline, ki je polprodukt v proizvodnji pigmenta TiO2. Sinteza nanodelcev anatasa iz metatitanove kisline temelji na t.i. sol-gel postopku. Nanodelci anatasa po izumu so zelo fini delci v obliki kisle/nevtralne suspenzije, pri čemer so nanodelci anatasa polikristalinični in kristaliti izkazujejo izotropno morfologijo in imajo premer približno 4-5 nm, sami nanodelci anatasa pa so premera med 30 do 80 nm ter je njihova specifična površina 200 m2/g ali več.