Synthesis of nanostructured TiO$_2$ microparticles with high surface area

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

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).

• Language: English
• Keywords: titanium dioxide, TiO$_2$, high surface area, photocatalysis, nanostructured particles
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 11 str.
• Numbering: Vol. 11, iss. 12, art. 1512
• PID: 20.500.12556/RUL-136603
• UDC: 620.3:546.82-31
• ISSN on article: 2073-4344
• DOI: 10.3390/catal11121512
• COBISS.SI-ID: 101815299
• Publication date in RUL: 12.05.2022

Record is a part of a journal

• Title: Catalysts
• Shortened title: Catalysts
• Publisher: MDPI AG
• ISSN: 2073-4344
• COBISS.SI-ID: 519958297

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 11.12.2021

Secondary language

• Language: Slovenian
• Keywords: titanov dioksid, velika specifična površina, fotokataliza, nanodelci

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P1-0134
• Name: Kemija za trajnostni razvoj

• Funder: ARRS - Slovenian Research Agency
• Project number: L7-1848
• Name: Fotokatalitsko čiščenje vode - razvoj pritrjenih katalizatorjev in kompaktnih reaktorskih sistemov