Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media
Nanomaterials,
Год журнала:
2024,
Номер
14(12), С. 1045 - 1045
Опубликована: Июнь 18, 2024
Photocatalysis
is
a
prominent
alternative
wastewater
treatment
technique
that
has
the
potential
to
completely
degrade
pesticides
as
well
other
persistent
organic
pollutants,
leading
detoxification
of
and
thus
paving
way
for
its
efficient
reuse.
In
addition
more
conventional
photocatalysts
(e.g.,
TiO2,
ZnO,
etc.)
utilize
only
UV
light
activation,
interest
scientific
community
recently
focused
on
development
application
visible
light-activated
like
g-C3N4.
However,
some
disadvantages
g-C3N4,
such
high
recombination
rate
photogenerated
charges,
limit
utility.
this
light,
present
study
focuses
synthesis
WO3
fibers/g-C3N4
Z-scheme
heterojunctions
improve
efficiency
g-C3N4
towards
photocatalytic
removal
widely
used
insecticide
clothianidin.
The
effect
two
different
precursors
(urea
thiourea)
fiber
content
properties
synthesized
composite
materials
was
also
investigated.
All
aforementioned
were
characterized
by
number
techniques
(XRD,
SEM-EDS,
ATR-FTIR,
Raman
spectroscopy,
DRS,
etc.).
According
results,
mixing
6.5%
W/W
fibers
with
either
urea
or
thiourea
derived
significantly
increased
activity
resulting
composites
compared
precursor
materials.
order
further
elucidate
most
photocatalyst
in
degradation
clothianidin,
generated
transformation
products
tentatively
identified
through
UHPLC
tandem
high-resolution
mass
spectroscopy.
Finally,
process
assessed
combining
results
an
in-vitro
methodology
predictions
in-silico
tools.
Язык: Английский
Photocatalytic Removal of the Antibiotic Furazolidone Using g-C3N4 in the Presence of Persulfates Under Lab and Pilot Scale Conditions
Water,
Год журнала:
2025,
Номер
17(4), С. 602 - 602
Опубликована: Фев. 19, 2025
Furazolidone,
a
nitrofuran
antibiotic,
has
been
broadly
used
in
aquaculture
and
veterinary
medicine,
its
presence
water
poses
considerable
environmental
health
hazards
due
to
toxicity.
This
study
investigated
hybrid
photocatalytic
process
for
the
removal
of
furazolidone,
employing
graphitic
carbon
nitride
(g-C3N4)
persulfate
anions
(PS)
under
both
laboratory
pilot-scale
conditions.
The
synergistic
effect
g-C3N4
PS
enhanced
generation
reactive
species,
facilitating
efficient
degradation
FZ
two
different
aqueous
matrices.
Through
scavenging
studies,
positive
holes
were
determined
be
dominant
followed
by
sulfate
radicals.
Seven
transformation
products
tentatively
identified
via
UHPLC-LTQ/Orbitrap
MS
analysis.
optimized
system
(g-C3N4/PS)
achieved
100%
furazolidone
less
than
60
min
simulated
solar
light,
demonstrating
potential
large-scale
application
wastewater
remediation.
Furthermore,
experiments
using
real
secondary
treated
municipal
proved
that
applied
is
capable
achieving
an
86.2%
(k
=
0.017
min−1)
as
well
90%
decrease
effluent
ecotoxicity
within
120
UVA
irradiation.
provides
insights
into
sustainable
processes
antibiotic
contaminants
from
underscores
role
g-C3N4-based
approaches
upper-scale
applications.
Язык: Английский
Nitrofurans in natural waters: optimisation and validation of SPE-based method using UHPLC-HRMS techniques
International Journal of Environmental & Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 14
Опубликована: Май 17, 2024
A
technique
employing
solid-phase
extraction
(SPE)
coupled
with
an
ultra-high
performance
liquid
chromatography
–
high
resolution
mass
spectrometry
system
was
established
for
quantifying
nitrofurans
(NFs)
in
various
environmental
water
samples,
such
as
river,
sea,
and
lake
water.
The
samples
were
prepared,
the
analytes
preconcentrated
using
Oasis
HLB
cartridge.
experimental
parameters,
including
pH
value
solvent,
thoroughly
optimised.
method
detection
limits
ranged
from
2.5
to
10
ng
L−1.
recoveries
of
target
compounds
at
three
spiking
levels
varied
between
76%
102%,
while
repeatability
4.1%
9.0%.
optimised
applied
examine
its
obtained
aquatic
systems,
impacted
by
aquaculture
facilities.
proposed
proved
be
simple,
sensitive,
suitable
simultaneous
analysis
monitoring
study
NFs
natural
samples.
Язык: Английский