magistrsko delo
Miha Mihovec (Author), Boštjan Genorio (Mentor), Igor Plazl (Thesis defence commission member), Miran Gaberšček (Thesis defence commission member)

Abstract

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.

Keywords

enoatomni elektrokatalizatorji;reduciran grafen oksid;vodikov peroksid;gorivne celice;sinteza;karakterizacija;magistrska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [M. Mihovec]
UDC: 66.097(043.2)
COBISS: 135294723 Link will open in a new window
Views: 52
Downloads: 13
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Other data

Secondary language: English
Secondary title: Synthesis and characterization of metal single atom electrocatalysts on reduced graphene oxide
Secondary abstract: 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.
Secondary keywords: single atom catalysts;hydrogen peroxide;reduced graphene oxide;fuel cells;synthesis;Katalizatorji;Univerzitetna in visokošolska dela;
Type (COBISS): Master's thesis/paper
Study programme: 1000376
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemijsko inženirstvo
Pages: 64 str.
ID: 17361125