20.500.12556/RUL-143254 Sinteza in karakterizacija kovinskih enoatomnih elektrokatalizatorjev na reduciranem grafen oksidu Synthesis and characterization of metal single atom electrocatalysts on reduced graphene oxide V magistrskem delu sem po modificiranih postopkih sintetiziral enoatomske elektrokatalizatorje kovin prehoda (SAC) na osnovi niklja, kobalta, mangana in železa na reduciranem grafen oksidu (rGO), ki naj bi izkazovali selektivnost za elektrosintezo vodikovega perksida. Vse sintetizirane SAC materiale na rGO sem ustrezno okarakteriziral s sledečimi metodami: vrstični elektronski mikroskop (SEM), energijsko disperzijska rentgenska spektroskopija (EDS), rentgenska fotoelektronska spektroskopija (XPS), ramanska spektroskopija in BET analiza specifične površine. Prav tako sem pri karakterizaciji elektrokatalizatorjev uporabil elektrokemijske metode, kot so: ciklična voltametrija (CV) v kombinaciji z rotirajočo disk elektrodo (RDE) in rotirajočo disk elektrodo z obročem (RRDE). Proučil in primerjal sem njihovo morfologijo, kemijsko strukturo in elektrokemijske lastnosti. Rezultati so pokazali, da je najustreznejši elektrokatalizator za elektrosintezo vodikovega peroksida, Ni na rGO v alkalnem elektrolitu. Rezultati raziskave so uporabni za nadaljnje raziskave, razvoj in optimizacijo elektrokatalizatorjev za selektivno in učinkovito elektrosintezo vodikovega peroksida. In the master's thesis, I synthesized transition metal single atom electrocatalysts (SAC) based on nickel, cobalt, manganese and iron on reduced graphene oxide (rGO) using modified procedures, which should show selectivity for the electrosynthesis of hydrogen peroxide. All synthesized SAC materials on rGO were properly characterized by the following methods: scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), raman spectroscopy and BET specific surface area analysis. To investigate their electrochemical performance additional characterization methods such as cyclic voltammetry (CV), chronoamperometry (CA) with rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) were used. The morphology, chemical structure and electrochemical properties were compared. The results showed that the most suitable electrocatalyst for the electrosynthesis of hydrogen peroxide is Ni on rGO in an alkaline electrolyte. The research results are useful for further research, development and optimization of electrocatalysts for the selective and efficient electrosynthesis of hydrogen peroxide. enoatomni elektrokatalizatorji reduciran grafen oksid vodikov peroksid gorivne celice sinteza single atom catalysts hydrogen peroxide reduced graphene oxide fuel cells synthesis true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2022-12-09 13:30:00 2022-12-09 13:30:07 2022-12-23 14:01:52 0000-00-00 00:00:00 2022 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 22081 135294723 Mihovec_Miha_-_Sinteza_in_karakterizacija_kovinskih_enoatomnih_elektrokatalizatorjev_na_reducira.pdf Mihovec_Miha_-_Sinteza_in_karakterizacija_kovinskih_enoatomnih_elektrokatalizatorjev_na_reducira.pdf 1 FAC86DF8FACA7CC7790E70BAFB801BE0 cacebf180a3721d7d27ea5fd5ddac0678365c982de599b6303c9ea846cb0c8b8 0d824984-77bd-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164877 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0