Magnetized TiO2 nano-photocatalyst by manganese ferrite (MnFe2O4) via a flexible long-chain-linker
Paper ID : 1331-ICNS
mohammad amin shafi *, Seyed Nezamoddin Mirsattari
Department of Chemistry, Shahreza Branch, Islamic Azad University, Shahreza, Iran
In summary, herein we described an effective procedure to synthesize magnetic nano photocatalysts. First, Titanium (IV) oxide (TiO2) anatase nanoparticles (NPs) were prepared by hydrothermal method. Then manganese ferrite (MnFe2O4) magnetic NPs with a narrow particle size distribution were synthesized by using the hydrothermal technique. then silica coated magnetic particles were prepared through the Stober method. The silica-coated MnFe2O4 particles were treated with 3-Aminopropyltriethoxysilane in order to obtain NH2-modified magnetic particles. In the next step, the carboxylation of the NPs was carried out by succinic anhydride. Finally, a covalent bond was formed between TiO2 semiconductors NPs and functionalized MnFe2O4/SiO2/(CH2)3-NH-CO-(CH2)2-COOH core/shell NPs. The structure and optical properties all of the nanoparticles were characterized by XRD, TEM and VSM. The photocatalytic activity of the MnFe2O4@SiO2@TiO2 NPs was studied by photocatalytic degradation of phenazopyridine (PHP). The degradation efficiency was investigated by UV light and 95% efficiency was obtained in 180 min by magnetized TiO2 NPs.
“Photocatalysis; Titania; Water purification; Superparamagnetic; Phenazopyridine”
Status : Abstract Accepted (Poster Presentation)