Lev Matoh (Author), Boštjan Žener (Author), Tina Skalar (Author), Urška Lavrenčič Štangar (Author)

Abstract

Hydrothermal reactions represent a simple and efficient method for the preparation of nanostructured TiO$_2$ particles that could be of interest as photocatalysts or catalytic supports. Although the particle size is in the range of 2–5 µm, the nanostructures composing the particles ensure a large specific surface area with values above 100 m$^2$/g. The effects of the different synthesis parameters on the morphology, photocatalytic activity, and stability of the prepared material were studied. The surface morphology of the prepared TiO$_2$ powders was studied by scanning electron microscopy (SEM). To further characterize the samples, the specific surface area for different morphologies was measured and the photocatalytic activity of the prepared powders was tested by degrading model pollutants under UV irradiation. The results show that the initial morphology had little effect on the photocatalytic properties. On the other hand, the final calcination temperature significantly increased the degradation rates, making it comparable to that of P25 TiO$_2$ (particle size 20–30 nm).

Keywords

titanov dioksid;velika specifična površina;fotokataliza;nanodelci;titanium dioxide;high surface area;photocatalysis;nanostructured particles;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
UDC: 620.3:546.82-31
COBISS: 101815299 Link will open in a new window
ISSN: 2073-4344
Views: 120
Downloads: 34
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Other data

Secondary language: Slovenian
Secondary keywords: titanov dioksid;velika specifična površina;fotokataliza;nanodelci;
Type (COBISS): Article
Pages: str. 1-11
Volume: ǂVol. ǂ11
Issue: ǂiss. ǂ12
Chronology: Dec. 2021
DOI: 10.3390/catal11121512
ID: 15288124