Abstract
Ciprofloxacin
(CIP)
is
the
commonly
prescribed
fluoroquinolone
antibiotic
and
one
of
top
ten
emerging
pharmaceutical
contaminants
in
world.
It
can
pose
a
potential
health
risk
if
its
residues
enter
body.
In
this
study,
adsorption
CIP
onto
magnetic
iron
oxide
nanoparticles
coated
with
silver
(Fe
3
O
4
@AgNPs)
was
evaluated.
Fe
@AgNPs
were
characterized
by
Fourier
Transform
Infrared
Spectroscopy
(FTIR),
X‐ray
Diffraction
(XRD),
Scanning
Electron
Microscope
(SEM).
The
parameters
affecting
on
nanoadsorbent
investigated
including
adsorbent
dose,
pH,
contact
time,
salt
content,
mixing
speed.
highest
efficiency
removal
achieved
at
pH
6,
dose
mg
l
−1
,
content
1
%
(W/V)
shaking
rate
100
rpm.
process
followed
Freundlich
isotherm
model,
kinetics
pseudo‐second
order
maximum
capacity
125
g
.
RSC Advances,
Год журнала:
2024,
Номер
14(29), С. 20492 - 20515
Опубликована: Янв. 1, 2024
Antibiotic
contamination
has
become
a
severe
issue
and
dangerous
concern
to
the
environment
because
of
large
release
antibiotic
effluent
into
terrestrial
aquatic
ecosystems.
To
try
solve
these
issues,
plethora
research
on
withdrawal
been
carried
out.
Recently
photocatalysis
received
tremendous
attention
due
its
ability
remove
antibiotics
from
aqueous
solutions
in
cost-effective
environmentally
friendly
manner
with
few
drawbacks
compared
traditional
photocatalysts.
Considerable
focused
developing
advanced
visible
light-driven
photocatalysts
order
address
problems.
This
review
provides
an
overview
recent
developments
field
photocatalytic
degradation
antibiotics,
including
doping
metals
non-metals
ultraviolet
photocatalysts,
formation
new
semiconductor
advancement
heterojunction
building
surface
plasmon
resonance-enhanced
systems.
ACS Omega,
Год журнала:
2024,
Номер
9(14), С. 15950 - 15958
Опубликована: Март 26, 2024
Antibiotics
are
widely
used
in
medicine,
but
they
not
fully
metabolized
the
body
and
can
end
up
wastewater.
Conventional
wastewater
treatment
methods
fail
to
completely
remove
antibiotic
residues,
which
then
enter
rivers
streams.
Adsorption
is
a
promising
technique
for
removing
antibiotics
from
wastewater,
even
at
low
concentrations.
The
successful
one-pot
synthesis
of
an
adsorbent,
iron-containing
porphyrin-based
porous
organic
polymer
(Fe-POP),
was
achieved
through
reaction
pyrrole
groups
terephthalaldehyde
presence
FeCl3.
Characterized
by
substantial
BET
surface
area
597
m2
g–1,
Fe-POP
systematically
investigated
its
adsorption
potential
removal
Ciprofloxacin
(CIP)
aqueous
solutions.
By
systematic
variation
key
parameters,
including
pH,
adsorbent
loading,
CIP
concentration,
conditions
were
optimized.
Under
optimal
pH
=
3,
concentration
5
ppm,
25
mg
Fe-POP,
maximum
capacity
reached
impressive
263
g–1.
robust
behavior
elucidated
fitting
experimental
data
Langmuir
isotherm
(R2
0.962)
pseudo-second-order
kinetic
model
0.999)
with
lower
error
values.
These
models
suggested
that
process
predominantly
involved
chemical
interactions
between
molecules
surface.
exhibited
structure
high
capacity,
showcasing
efficacy
contaminants
water.
Therefore,
be
considered
valuable
water
applications,
specifically
removal.
Analytical Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 18, 2025
The
design
and
synthesis
of
advanced
artificial
enzymes
are
essential
for
developing
promising
surrogates
natural
enzymes.
Herein,
we
reported
an
efficient
facile
strategy
the
a
single-site
iridium
catalyst
on
metal-organic
framework
(UiO-67@Ir)
as
light-responsive
oxidase-like
nanozyme,
in
which
UiO-67
was
utilized
host
template
iridium(III)
complex
photosensitizer
with
property.
A
UiO-67@Ir
by
coordination
Ir
(III)
nitrogen
atom
is
confirmed
X-ray
photoelectron
spectroscopy
aberration-corrected
atomic-resolution
high-angle
annular
dark-field
scanning
transmission
electron
microscopy.
possesses
remarkable
activity
good
cycle
storage
stability.
Excellent
catalytic
toward
oxidation
3,3',5,5'-tetramethylbenzidine
(TMB)
obtained
0.204
mM
Michaelis-Menten
constant
(Km)
due
to
its
large
surface
areas
abundant
active
sites.
TMB
oxidized
presence
O2
under
light
irradiation
through
formation
both
•OH
O2•-
type
I
photosensitization
processes
(electron
transfer)
1O2
II
(energy
transfer).
Moreover,
sensitive
colorimetric
method
developed
detection
antioxidants
limit
0.6,
0.5,
0.3
μM
ascorbic
acid,
glutathione,
cysteine,
respectively.
total
antioxidant
capacity
fruit
drink
samples
were
analyzed
desirable
results.
This
study
not
only
enlightens
novel
nanozyme
designing
strategies
but
also
suggests
analytical
performance
sensing.
The
accumulation
of
potential
antibiotics
in
water
is
potentially
harmful
to
human
beings
and
the
environment.
In
this
paper,
a
novel
composite
catalyst,
Bi4O5I2/glucose-modified
Bi2O2CO3
(BGBCO)
with
high
ciprofloxacin
(CIP)
removal
rate,
was
rapidly
synthesized
by
low-temperature
hydrothermal
method.
BGBCO
demonstrated
best
photocatalytic
activity
after
100
min
irradiation
65
W
energy-saving
lamp.
apparent
kinetic
constants
are
7.20,
2.28,
1.41
times
Bi2O2CO3,
Bi4O5I2,
glucose-modified
respectively.
Experimental
results
characterization
show
that
significant
improvement
performance
can
be
attributed
more
active
sites,
wider
visible
light
absorption
range,
improved
photogenerated
carrier
separation
rate.
Free
radical
capture
experiments
confirmed
•O2-
h+
primary
species
responsible
for
degradation
CIP.
toxicity
prediction
showed
CIP
products
decreased
significantly.
Based
on
various
results,
possible
mechanism
pathway
were
proposed.
This
study
provides
valuable
insights
modification
Bi2O2CO3-based
heterojunction
materials
their
application
purification
water.
