Water,
Journal Year:
2024,
Volume and Issue:
16(16), P. 2299 - 2299
Published: Aug. 15, 2024
Antibiotic
residues
in
water
environments
have
garnered
widespread
attention.
Metal-organic
frameworks
(MOFs)
found
extensive
applications
purification.
This
study
investigates
the
use
of
a
cobalt-based
MOF
material,
zeolitic
imidazolate
framework-67(ZIF-67)(Co),
for
activating
persulfate
(PMS)
to
remove
residual
antibiotic
ciprofloxacin
(CIP)
from
aqueous
environments.
The
main
findings
are
as
follows:
ZIF-67(Co)
exhibits
insignificant
adsorption
capacity
CIP,
and
PMS
alone
does
not
degrade
CIP
effectively.
However,
ZIF-67(Co)-activated
demonstrates
efficient
degradation
following
pseudo-second-order
reaction
kinetics.
Under
optimal
conditions
catalyst
dosage
(15
mg)
concentration
(1.0
mM),
removal
efficiency
reaches
88%
after
60
min.
Comparative
analysis
at
different
initial
pH
levels
shows
that
highest
is
reached
under
mildly
acidic
conditions,
with
an
86%
rate
achieved
within
min
these
conditions.
Investigation
into
impact
various
inorganic
anions
on
ZIF-67(Co)-catalyzed
reveals
significant
inhibition
by
chloride
ions
(Cl−),
whereas
nitrate
(NO3-)
sulfate
(SO42-)
minor
effects
efficiency.
system
consistent
performance
across
matrices,
highlighting
ZIF-67(Co)/PMS
effective
environmental
waters.
provides
technical
support
residues.
Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(3), P. 1629 - 1629
Published: Feb. 6, 2025
Since
people
spend
most
of
their
time
in
indoor
environments,
they
are
continuously
exposed
to
various
contaminants
that
threaten
human
health.
The
air
quality
these
settings
is
therefore
a
crucial
factor
maintaining
health
safety.
In
order
reduce
the
concentration
pollutants
and
improve
quality,
photocatalytic
oxidation
has
drawn
attention
researchers.
This
study
aims
provide
comprehensive
view
nanomaterials
used
common
environments.
effects
parameters
like
humidity,
airflow,
deposition
time,
light
intensity
were
also
evaluated,
as
can
significantly
influence
reactions.
photocatalysis
TiO2-based
and,
this
study,
classified
examined
based
on
morphology.
TiO2
doping
with
metals
non-metals
demonstrated
an
enhancement
its
adsorption
properties
efficiency
for
removal
several
pollutants.
role
carbon-based
was
evaluated
due
capabilities
towards
addition,
other
less
photocatalysts
such
ZnO,
MnO2,
WO3,
CeO2,
CdS
exhibited
high
activity
pollutant
degradation.
Applications
purifiers,
paints,
building
materials
e.g.,
concrete,
glass,
wallpapers,
lead
efficient
reduction
settings.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(7), P. 1417 - 1417
Published: March 22, 2025
Antibiotic-based
wastewaters
seriously
endanger
human
health
and
damage
the
ecological
environment,
photocatalytic
degradation
is
a
desirable
strategy
for
eliminating
these
contaminants
in
water.
Therefore,
developing
proper
catalyst
photodegradation
of
antibiotics,
including
ciprofloxacin
(CIP),
great
importance.
In
this
study,
novel
Ag2S/Zn2+-decorated
graphitic
carbon
nitride
(AZCN
short)
type-II
heterojunctions
are
constructed
through
precipitation–calcination
procedure.
The
high
porosity
with
specific
surface
area
133.5
m2
g−1,
as
well
positive
synergy
between
Ag2S-
Zn2+-decorated
(abbreviated
ZCN),
enhance
incident
light
harvesting,
increase
adsorption
capacity
reactant
molecules,
favor
mass
transfer
promote
separation
transport
photoinduced
carriers,
therefore
improving
efficiency
CIP.
Specifically,
CIP
(50
mL,
10
mg
L−1)
over
2.5%
AZCN
(10
mg)
18.1%,
43.1%
55.7%
within
60
min
irradiation
using
near-infrared
light,
visible
simulated
solar
respectively.
Moreover,
it
displays
satisfactory
recycling
stability
excellent
universality.
This
research
not
only
develops
promising
heterojunction
photocatalyst
but
also
offers
some
valuable
insights
water
remediation.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(42), P. 19536 - 19552
Published: Oct. 7, 2024
The
present
study
outlines
the
synthesis
of
cadmium
sulfide-metal–organic
framework
(CdS-MOF)
MIL-101
(Fe)
heterojunctions
achieved
via
fast
microwave-assisted
reactions.
Thus,
different
CdS-MOF
ratios
were
prepared
to
their
effectiveness
as
photocatalysts.
These
compounds
employed
in
photocatalytic
degradation
methylene
blue
(MB)
under
UV
and
visible
irradiation.
Structural,
morphological,
textural,
compositional,
optical
properties
synthesized
determined
by
X-ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
photoelectron
spectroscopy
(XPS),
UV–vis
spectroscopy,
Raman
Fourier
transform
infrared
(FTIR)
utilized
characterize
structural,
properties.
Electrochemical
impedance
(EIS)
was
also
determine
photovoltage
photocurrent
densities.
resulting
valence
band
offset
(Vfb)
gap
energy
values
construct
an
scheme.
Our
research
revealed
that
heterojunction
enhances
efficiency
electron–hole
pair
separation,
thereby
mitigating
charge
carrier
recombination
effects.
Moreover,
type
I
electronic
structure
established
efficient
reaction
mechanism,
effectively
suppressing
photogenerated
pairs.
system
demonstrated
exceptional
behavior,
achieving
complete
MB
removal
within
30
min
time
exhibiting
outstanding
stability
reusability
after
four
cycles.
findings
highlight
potential
field
wastewater
treatment
for
organic
pollutants,
offering
a
promising
alternative
current
environmental
issues.
