Akademik Veri Yönetim Sistemi
CHEMISTRYSELECT, cilt.2024, sa.9, ss.1-12, 2024 (SCI-Expanded)
This study aims to reduce the band gap by doping wide bandgap
TiO2 with CoFe2O4 and PANI to improve the photocatalytic
efficiency and examine the decolorization kinetic of Rhodamine
B (RhB). The characteristics of the nanocomposites were
thoroughly assessed through the utilization of SEM-EDS, TEM,
XRD, FTIR, VSM, UV-Vis, PL, and XPS analyses. The SEM and TEM
analyses revealed that CoFe2O4/TiO2/PANI has a homogeneously
porous structure. XRD analysis results were found to show good
agreement with the standard diffraction data cards. The band
structures obtained by FTIR analyses were compatible with
literature studies. The band gap energies determined by UV-Vis
analyses were determined as 2.86 eV for CoFe2O4/TiO2/PANI.
The decrease of CoFe2O4/TiO2/PANI recombination rate was
proven with PL results. The different initial dye concentrations,
temperature, and light intensity parameters were used to
determine the decolorization kinetics of RhB over CoFe2O4/TiO2/
PANI. The photodegradation rates of RhB in reactions catalyzed
by PANI, CoFe2O4, commercial-TiO2, CoFe2O4/TiO2, and CoFe2O4/
TiO2/PANI were determined as 7.6 %, 20.7%, 26.6%, 32.4%, and
48.8%, respectively. According to data obtained from the
decolorization of RhB on CoFe2O4/TiO2/PANI nanocomposite,
the appropriate kinetic model was determined Network kinetic.
The adsorption equilibrium constant (KB) and activation energy
(Ea) were calculated as 0.007 and 7.9 kJ/mol, respectively.