diplomsko delo
Urban Sajevic (Author), Boštjan Genorio (Mentor)

Abstract

V diplomskem delu opisujemo postopek sinteze planarnih borovih struktur, poznanih pod imenom borofeni. V prvem delu diplomskega dela poskušamo optimizirati sintezo bora iz zlitin Litij-Bor (Li-B) ter izolacijo plastovitega bora; borofena. V drugem delu se osredotočamo na elektrokemijsko karakterizacijo pridobljenih borofenov z uporabo ciklične voltametrije ter meritev specifične upornosti. Vzorec narejen po izboljšanem sinteznem postopku je s pomočjo uporabe vrstičnega elektronskega mikroskopa kazal veliko stopnjo razplastenosti ter značilnosti 2D materiala. Ciklična voltametrija je prikazala katalitske lastnosti vzorca na reakcijo redukcije kisika v kislem mediju. Meritve specifične upornosti so sicer pokazale precejšen električni upor vzorca, vendar lahko predvidevamo, da se ta niža z višanjem temperature, kot je to značilno za kristaliničen bor.

Keywords

dvodimenzionalni materiali;2D materiali;bor;borofeni;elektrokemija;elektrokemijske lastnosti;specifična upornost;ciklična voltametrija;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [U. Sajevic]
UDC: 620.1:546.27(043.2)
COBISS: 1538318787 Link will open in a new window
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Downloads: 164
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Other data

Secondary language: English
Secondary title: Synthesis and electrochemical characterization of borophenes
Secondary abstract: Present thesis is describing the synthesis of boron planar structures, also known as borophenes. In the first part of our thesis we are trying to optimize the synthesis of boron from Lithium-Boron (Li-B) alloys and isolation of layered boron; borophene. Second part of the thesis is focusing on electrochemical characterization of newly synthesized borophenes through the use of cyclic voltammetry and measurements of specific electrical resistance. Using scanning electron microscope we proved that the synthesized sample was layered and had properties of a 2D material. Cyclic voltammetry has shown that our sample catalytically responds to oxygen reduction reaction in acidic electrolyte. Measuring the specific resistance of our sample resulted in quite high resistance, however the resistance is projected to fall with increasing temperature; same as for crystalline boron.
Secondary keywords: borophenes;2D material;electrochemistry;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages: 34 str.
ID: 11217752