20.500.12556/RUL-161059 Elektrokemijska karakterizacija novega elektrokatalitskega kompozita na osnovi Pd nanodelcev na podpornem materialu iz titanovega oksinitrida in ogljika Electrochemical characterization of a novel electrocatalyst composite based on Pd nanoparticles supported on titanium oxynitride and carbon Paladij je s stališča elektrokemije in elektrokatalize zanimiv zaradi svojih podobnosti s platino in široki uporabi na področju heterogene katalize. Kljub temu so trenutno dostopni elektrokatalizatorji na osnovi paladija problematični zaradi hitrega odtapljanja in s tem povezane izgube katalitske aktivnosti. Možna alternativa so materiali na osnovi paladija z drugačnimi podpornimi materiali, kot je denimo titanov oksinitrid, ki se je v predhodnih študijah izkazal kot ugoden material za elektrokemijske meritve. Diplomsko delo obsega poskus čim natančnejše karakterizacije in razlage obnašanja novega elektrokatalizatorja z uporabo elektrokemijskih metod. Poleg tega vsebuje tudi primerjavo lastnosti novega materiala s komercialno dostopnim kompozitom paladijevih nanodelcev na ogljiku. Pri tem se delo osredotoča predvsem na razlike pri pogojih, ki so relevantni za elektrokatalizo v kislih vodnih raztopinah. Podrobno so obravnavani tudi procesi med samo aktivacijo elektrode in njihovi učinki na končno elektrokemijsko aktivnost. In the context of electrochemistry and electrocatalysis, Palladium is interesting due to its similarities to platinum and its widespread use in the field of heterogenous catalysis. However, currently available electrocatalysts based on Pd suffer from their proclivity for rapid dissolution and the loss of catalytic activity associated with it. Possible alternatives include Pd based electrocatalysts with different support materials such as titanium oxynitride, which has been revealed to be a suitable material for electrochemical applications by prior studies. The following diploma thesis is focused on an accurate characterization and explanation of the novel electrocatalyst behaviour using electrochemical methods. It also includes a comparison between the novel material and commercially available composite of palladium nanoparticles on carbon support. A particular emphasis is given to the differences between the two composites under conditions relevant to electrocatalysis in acidic aqueous media. Processes taking place during the pretreatment of the electrode and their effects on the resulting electrochemical activity are also studied in detail. Elektrokataliza Paladij Titanov oksinitrid Elektrokemija Nanodelci Electrocatalysis Palladium Titanium oxynitride Electrochemistry Nanoparticles true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-09-06 12:05:06 2024-09-06 12:05:10 2024-10-29 13:04:52 0000-00-00 00:00:00 2024 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 24222 213306115 Trputec_Jan_-_Elektrokemijska_karakterizacija_novega_elektrokatalitskega_kompozita_na_osnovi_Pd_.pdf Trputec_Jan_-_Elektrokemijska_karakterizacija_novega_elektrokatalitskega_kompozita_na_osnovi_Pd_.pdf 1 37FB0CB525BD2F672C6D23BAD3105F1B ef58d03b547e1bd9d63324a71d7f867eb0f9c02711bcefa5cdd76761a689099c 7b9d25af-6c37-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=189918 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0