Naslov
Synthesis of TiO2-rGO nanocomposites as photocatalysts for the degradation of methylene blue dye in water

Autori
Kocijan, Martina ; Ćurković, Lidija ; Ljubas, Davor ; Mužina, Katarina ; Kurajica, Stanislav ; Mandić, Vilko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts / - , 2019, 88-88

Skup
2nd International Conference on Nanomaterials Science and Mechanical Engineering

Mjesto i datum
Aveiro, Portugal, 09.07.2019. - 12.07.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
nanocomposites, reduced graphene oxide, photocatalysis

Sažetak
The aim of this study was to synthesize the TiO2- rGO (titania-reduced graphene oxide) nanocomposites as photocatalysts. The graphene oxide (GO) was synthesized from natural graphite powder by Hummer's method [1]. TiO2 sol was prepared by using titanium tetraisopropoxide as a precursor, i-propanol as a solvent, acetylacetone as a chelating agent and nitric acid as a catalyst [2]. The TiO2-rGO nanocomposites with different amounts of GO were obtained by a hydrothermal method. They were characterized by means of powder X-ray diffraction analysis, Fourier transform infrared spectroscopy, scanning electron microscopy and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activity of the TiO2-rGO nanocomposites was evaluated by the photocatalytic degradation of Methylene blue (MB) dye (dissolved in water) as a model pollutant with the irradiation by three different lamps: (I) a light-emitting diode (LED) lamp with a radiation peak at 365 nm, (II) halogen lamp that emits radiation predominantly in visible region and (III) Solar-simulator lamp. The concentrations of MB were monitored by UV-Vis spectrophotometry. Obtained results indicated that photocatalytic properties of prepared TiO2-rGO nanocomposites depend on the amount of rGO and on the type of the radiation (irradiation source).

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA