Langmuir,
Journal Year:
2023,
Volume and Issue:
39(40), P. 14357 - 14373
Published: Sept. 28, 2023
A
heterogeneous
photocatalyst,
MgFe2O4/UiO-67
(MU-x),
was
successfully
synthesized
by
doping
magnetic
magnesium
ferrite
nanoparticles
(MgFe2O4)
with
the
UiO-67
metal-organic
framework
at
various
weight
ratios
(MgFe2O4:
30,
50,
70,
and
90
wt
%).
Various
techniques,
including
X-ray
diffraction
(XRD),
field
emission
scanning
electron
microscopy
(FE-SEM),
Fourier
transform
infrared
spectroscopy
(FT-IR)
,
Brunauer-Emmett-Teller
(BET),
photoluminescence
(PL),
vibrating
sample
magnetometry
(VSM),
electrochemical
impedance
(EIS),
ultraviolet-visible
diffuse
reflectance
(UV-vis
DRS),
were
used
to
characterize
prepared
photocatalysts.
The
photocatalytic
performance
of
MU-x
in
degradation
ciprofloxacin
(CIP)
under
visible
light
assessed.
CIP
efficiency
found
increase
as
amount
MgFe2O4
composite
increased
up
70
%.
Experimental
conditions
optimized
using
response
surface
methodology
(RSM)
based
on
central
design
(CCD)
three
factors:
initial
pH,
catalyst
loading,
concentration.
Using
obtained
model,
optimal
determined
follows:
pH
8.025,
loading
33.8
%,
concentration
10.8
mg/L.
Under
these
conditions,
a
notable
improvement
achieved,
99.62%
removal
achieved
within
min,
surpassing
previously
reported
Total
organic
carbon
(TOC)
analysis
revealed
high
degree
mineralization,
81.25%.
pathway
investigated
liquid
chromatography-mass
spectrometry
(LC-MS)
analysis.
Finally,
values
ECB
EVB
photocatalyst
possible
mechanism
Mott-Schottky
applied
scavengers.
hydroxyl
radical
(•OH)
identified
dominant
species
through
trapping
experiment.
%
(MU-70)
exhibited
excellent
stability
recoverability
an
external
magnet,
demonstrating
86.33%
after
four
cycles.
According
results,
MU-70
is
promising
visible-light-active
great
potential
for
water
treatment
applications
convenient
recovery.
