Open AccessSolution combustion method to synthesize magnetic Fe3O4 as photocatalytic of Congo red dye and antibacterial activity
Author(s) -
. Salni,
Muhammad Said,
Poedji Loekitowati Hariani,
Ida Nur Apriani Apriani
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/926/1/012050
Subject(s) - congo red , photocatalysis , nuclear chemistry , scanning electron microscope , materials science , visible spectrum , rhodamine b , spectroscopy , spinel , catalysis , chemistry , analytical chemistry (journal) , organic chemistry , metallurgy , physics , optoelectronics , adsorption , quantum mechanics , composite material
Fe 3 O 4 has been synthesized using the combustion solution method using glycine as fuel. The Fe 3 O 4 was used as a catalyst in the photocatalytic degradation of Congo red dye. The Fe 3 O 4 were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS), UV-Vis spectroscopy, and vibrating sample magnetometry (VSM). The characterization showed that Fe 3 O 4 has an inverse spinel structure with a crystalline size of 35.6 nm. Fe 3 O 4 has an optical band gap of 2.16 eV, and a saturation magnetization of 83.76 emu/g. The study showed that the highest photocatalytic degradation was at 90 min of irradiation time using visible light irradiation, the concentration of Congo red dye of 10 mg/L, and pH solution of 5, with a photocatalytic degradation efficiency of 97.70%. The experiment indicated that the photocatalytic degradation of the Congo red dye by Fe 3 O 4 followed a pseudo-first-order. Fe 3 O 4 is effective as an antibacterial against gram-positive bacteria ( Streptococcus aureus ) and gram-negative bacteria ( Escherichia coli ).