Naslov
Sol-gel preparation of nanocrystalline titania photocatalyst using ethyl acetoacetate modified Ti(n-BuO)4 precursor

Autori
Kurajica, Stanislav ; Minga, Iva ; Mandić, Vilko ; Mužina, Katarina

Izvornik
European chemical bulletin (2063-5346) 6 (2017), 4; 155-162

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
nanocrystalline anatase ; photocatalytic activity ; bandgap ; ethyl acetoacetate ; chelating agent

Sažetak
Sols prepared by chelation of titanium n- butoxide, Ti(OC4H9)4, with ethyl acetoacetate, C6H10O3, in various ratios were slowly hydrolyzed, and the obtained gels were investigated using Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis. The gels were thermally treated at 350 °C, and the products were investigated using X-ray diffraction, N2 gas adsorption–desorption isotherms and diffuse reflectance UV–Vis spectroscopy. Photocatalytic activity assessment was obtained through degradation process of methylene blue under UV light. From the results obtained, the relationships between gel structure and titania crystallite size, specific surface area, bandgap, and photocatalytic activity, as the most relevant parameters, were discussed. The alkoxide modification affected the gel structure, as well as the properties of the final material. However, the sample prepared from unmodified Ti-n-butoxide yielded the most favorable properties.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti

POVEZANOST RADA