SONGKLANAKARIN JOURNAL OF SCIENCE & TECHNOLOGY

Volume 42, No. 01, Month JANUARY, Year 2020, Pages 21 - 26

Decolorization of direct scarlet 4bs dye using biosynthesized iron nanoparticles as effective heterogeneous fenton-like catalyst

Natkanin Supamathanon and Sudarat Sombatsri

Abstract Download PDF

In the present study, iron nanoparticles (Fe-NPs) were synthesized using extracts of green tea leaves as reducing and capping agents under atmospheric conditions. The Fe-NPs were characterized using scanning electron microscopy, energydispersive spectrometry, transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The nanoparticles were mostly spherical and uniform in size with diameters that ranged from 50 to 70 nm and then used as a Fentonlike catalyst for the decolorization of direct scarlet 4BS in solution. About 85% of the dye was successfully removed in 30 min using 1 g/L of catalyst in the presence of 15 mM of H2O2 at low (acidic) pH values of 2−4 at room temperature.

Keywords

green synthesis, iron nanoparticles, direct scarlet 4BS, Fenton-like catalyst

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