diplomsko delo
Abstract
Grafen, kljub svoji enoatomski debelini, predstavlja enega najmočnejših materialov. Poleg tega velja za izjemen toplotni in električni prevodnik. Uporaba grafena je raznolika in se razteza na različna področja, kot so nanotehnologija, bioinženiring in shranjevanje energije. Grafen lahko sintetiziramo na različne načine, med katerimi izstopajo mehanska cepitev, epitaksijska rast na silicijevem karbidu, kemijska redukcija grafen oksida, kemijska depozicija iz parne faze ter bliskovito Joule-ovo segretje (FJH). Ta raznovrstnost sinteznih pristopov omogoča prilagodljivost pri pridobivanju grafena za uporabo v različnih aplikacijah.
V diplomski nalogi bom obravnaval proces FJH ogljičnih vzorcev, bolj natančno vzorec z imenom Ketjenblack EC-300J, ki je vseboval različne vsebnosti niklja. Namen eksperimentalnega dela je bil optimizirati spremenljivke sistema za pridobitev turbostratičnega grafena čim boljše kakovosti v večjem merilu.
Produkt smo nato karakterizirali z dvema tehnikama, in sicer s pomočjo vrstičnega elektronskega mikroskopa (SEM) ter Ramanske spektroskopije. Tehniki sta nam pokazali, kakšna je morfologija ter sestava produkta.
Keywords
grafen;dopiranje grafena;bliskovito Joule-ovo segretje;turbostratični grafen;diplomska dela;
Data
Language: |
Slovenian |
Year of publishing: |
2023 |
Typology: |
2.11 - Undergraduate Thesis |
Organization: |
UL FKKT - Faculty of Chemistry and Chemical Technology |
Publisher: |
[A. Pregrad] |
UDC: |
620.1(043.2) |
COBISS: |
163626243
|
Views: |
5 |
Downloads: |
0 |
Average score: |
0 (0 votes) |
Metadata: |
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Other data
Secondary language: |
English |
Secondary title: |
System setup for flash Joule heating of carbon materials |
Secondary abstract: |
Graphene, despite its one-atom thickness, counts as one of the strongest materials. In addition, it is considered extremely conductive, for both heat and electricity. The applications of graphene are diverse and span various fields such as nanotechnology bioengineering, and energy storage. Graphene can be synthesized in various ways, among which mechanical exfoliation, epitaxial growth on silicon carbide, chemical reduction of graphene oxide, chemical vapor deposition and flash Joule heating (FJH) stand out. This diversity of synthesis approaches allows flexibility in obtaining graphene for use in variety of research applications.
In my thesis, I will discuss the FJH process of carbon samples, more specifically a sample called Ketjenblack EC-300J, which contained various nickel contents. The purpose of the experimental work was to optimize the system variables to obtain turbostratic graphene of higher quality on a larger scale.
The product was then characterized using two techniques, using scanning electron microscopy (SEM) and Raman spectroscopy. The techniques showed us the morphology and composition of the product. |
Secondary keywords: |
graphene;flash Joule heating;turbostratic graphene;Materiali;Univerzitetna in visokošolska dela; |
Type (COBISS): |
Bachelor thesis/paper |
Study programme: |
1000372 |
Thesis comment: |
Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo |
Pages: |
35 str. |
ID: |
19908958 |