Obdelava nanodelcev titanovega dioksida rutilne kristalne strukture

diplomska naloga

Suzana Stokić (Author), Matjaž Kristl (Mentor), Mihael Drofenik (Co-mentor), Monika Inkret (Co-mentor)

Abstract

Pri tem diplomskem delu smo površinsko obdelali nanodelce titanovega dioksida rutilne kristalne strukture s plaščem silicijevega in aluminijevega oksida. Za površinsko obdelavo nanodelcev TiO2 smo uporabili tri postopke. Princip oplaščenja nanodelcev je bila koprecipitacija, kjer smo z ustreznimi obarjalnimi reagenti dosegli nanos oksidnih plaščev na površino nanodelcev titanovega dioksida. Ugotovili smo, da so najbolje oplaščeni tisti nanodelci, ki so bili površinsko obdelani po postopku 3. Pri vseh treh postopkih je prihajalo do aglomeracije delcev, kar je otežilo oplaščevanje posameznih delcev. Dobljene vzorce smo karakterizirali s pomočjo rentgenske praškovne difrakcije (XRD), s transmisijskim elektronskim mikroskopom (TEM), z vrstičnim elektronskim mikroskopom (SEM), z rentgenskim fluorescenčnim spektrofotometrom (XRF) ter določili specifično površino delcev z BET metodo.

Keywords

nanodelci;titanov dioksid;površinska obdelava;oplaščenje;koprecipitacija;

Data

Language:	Slovenian
Year of publishing:	2010
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[S. Stokić]
UDC:	542.745(043.2)
COBISS:	14091030
Views:	3690
Downloads:	394
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Surface coating of titanium dioxide nanoparticles with rutile crystal structure
Secondary abstract:	Nanoparticles of titanium dioxide with rutile crystal structure were coated with Al2O3 and SiO2. Three different processes were used for this surface treatment. Rutile nano TiO2 was coated by method of coprecipitation, where precipitating agents were added and aluminium and silicium oxide layers were formed on surface of nanoparticles. The results showed that the most optimal process was the third process. The samples were characterised by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), X-ray fluorescence spectrometer (XRF) and SBET method.
Secondary keywords:	nano TiO2;surface treatment;coating;coprecipitation;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	VIII, 47 f.
Keywords (UDC):	mathematics;natural sciences;naravoslovne vede;matematika;chemistry;crystallography;mineralogy;kemija;practical laboratory chemistry;preparative and experimental chemistry;praktična laboratorijska kemija;preparativna in eksperimentalna kemija;working with gases;
ID:	988680