Production of propolis/TiO2 (P-TiO2) nano composites for degradation of food dyes

Year 2019, Volume: 1 Issue: 1, - , 11.12.2019

Melek Koç Keşir Münevver Sökmen

Abstract

Aim
of this study is to produce highly active hybrid propolis-TiO₂
nanocomposites using sol-gel method and to use it remediation of food industry
waste. Propolis solution was prepared in ethanol and added to sol-gel mixture
at increasing volume (0.25,
0.50, 0.75, 1.00 mL) to prepare propolis-TiO₂ (P-TiO₂)
hybrid catalyst. Neat TiO₂ was also prepared by the same sol-gel
technique and its action was compared to propolis doped ones. Catalysts were
calcinated at 300 ^oC to obtain desired anatase form.

After
production the catalysts were characterized by X-ray diffraction (XRD),
scanning electron microscopy (SEM) and FTIR. Sunset Yellow (SY), Allura red
(AR) and Tartrazine (TT) were used as model compounds ([C]₀=10 mgL^-1,
catalyst mass=1 gL^-1) . Concentration of dyes were monitored by
UV-vis spectrometry. P-TiO2 catalyst prepared with 1.00 mL propolis solution
was extremely effective for removal of all dyes studies for both 254 nm and 365
nm light exposure. LED light exposure provided lower removal rate (approx..
25%) but it was still significant for dye removal.

Keywords

Photocatalysis, Propolis, TiO2, Dye

Supporting Institution

TÜBİTAK

Project Number

1649B031600549

Thanks

Thanks to TÜBİTAK for financial support.

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