20.500.12556/RUL-118621 Imobilizacija TiO2 nanostrukturiranih mikrodelcev Immobilization of TiO2 nanostructured microparticles Iz titanovega tetraklorida sem sintetizirala tridimenzionalne rožicam podobne mikrodelce TiO2, ki sem jih uporabila za pripravo treh različnih suspenzij. Suspenzije sem v različnem številu slojev nanesla na steklene ploščice in jih termično obdelala. Ploščice sem nato uporabila za fotokatalitsko razgradnjo barvila Plasmocorinth B v šaržnem reaktorju s svetlobo z valovanjem v območju ultravijoličnega spektra pri različnih pogojih. Fotokatalitsko razgradnjo barvila sem preverjala z merjenjem absorbance vzorcev s spektrofotometrom. Z vrstičnim elektronskim mikroskopom smo posneli ploščice z nanosi za podrobnejši vpogled v površino in strukturo nanosov suspenzije. Rezultati so pokazali, da se je za najboljše vezivno sredstvo izkazal polivinilpirolidon, saj je suspenzija s tem dodatkom v obliki plasti po termični obdelavi najhitreje razgrajevala barvilo. Razgradnjo barvila so dodatno pospešili trije nanosi suspenzije in prepihovanje vodne raztopine barvila s kisikom. Titanium tetrachloride was used as a precursor for the synthesis of three-dimensional flower-like TiO2 microparticles, from which three different suspensions were further prepared. The suspensions were deposited in a different number of layers to the glass slides, which were then heat-treated. The prepared plates were used for the photocatalytic degradation of Plasmocorinth B in a batch reactor under UV light and under different conditions. The photocatalytic degradation of the dye was checked by measuring the absorption of the samples with a spectrophotometer. A detailed insight into the morphology and structure of the photocatalyst was obtained with the scanning electron microscope. The results showed that polyvinylpyrrolidone proved to be the best binder as the resulting suspension in the form of layers and after heat treatment degrades the dye the fastest. The degradation of the dye was also accelerated by three layers of the suspension deposited on the glass slides and by purging the aqueous dye solution with oxygen. mikrodelci TiO2 fotokataliza UV svetloba polprevodnik polivinilpirolidon TiO2 microparticles photocatalysis UV light semiconductor Polyvinylpyrrolidone true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2020-08-28 12:10:00 2020-08-28 12:10:05 2022-08-30 04:04:48 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 6163 27430659 Klemenic_Mateja_-_Imobilizacija_TiO2_nanostrukturiranih_mikrodelcev.pdf Klemenic_Mateja_-_Imobilizacija_TiO2_nanostrukturiranih_mikrodelcev.pdf 1 90E54E4746F39346D18C0711AE3DDB9A 7fc09952be0d742de2cbb42b4d081e443cbaf3c7a619fee4a56998fdf4eecbfb 8a9d70d3-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=133000 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0