Chemical Engineering Journal,
Journal Year:
2023,
Volume and Issue:
480, P. 148250 - 148250
Published: Dec. 22, 2023
The
development
of
low-cost
photostable
heterostructures
with
robust
interfacial
contact
is
critical
for
competent
photoactivity
and
practical
applications.
solid-state
approach
was
successfully
employed
fabrication
novel
stacked
oval-shaped
CoMn-LDH/C-MgO
composites
Mn-O-Mg
bridges
efficient
charge
separation
induced
by
S-scheme
transfer
degradation
amoxicillin
(AMX).
persulfate
(PS)
activation
mechanism
confirmed
Raman
analysis
using
bond
length
relationship
to
peak
shifts.
PS
rate
1.8
times
CoMn-LDH/PS
the
heterojunction
a
99.97
±
0.16
%
removal
efficiency
after
60
min
irradiation
at
pH
5.2.
photocatalytic
ozonation
increased
AMX
mineralization
up
8
compared
ozonation.
Antimicrobial
studies
bacterial
growth
inhibition
by-products
had
reduced
AMX.
This
work
demonstrated
an
as
visible
light
heterogeneous
photocatalyst
pharmaceuticals.
Journal of Cleaner Production,
Journal Year:
2023,
Volume and Issue:
429, P. 139519 - 139519
Published: Nov. 3, 2023
Photocatalytic
degradation
of
pharmaceutical
pollutants
in
water
or
wastewater
is
becoming
a
hot
topic
for
environmental
clean-up.
Herein,
novel
CeFeCu
trimetal
oxide
(CFC
TMO)/Bi2O3
(CFCB)
photocatalysts
were
prepared
through
precursor
mixing,
ultrasonication,
and
calcination
methods
used
photocatalytic
sulfamethoxazole
(SMZ).
The
pseudo-first
order
kinetic
rate
CFCB-2
catalyst
on
SMZ
reached
0.0577
min−1
which
4.93
10.02
times
higher
than
α-Bi2O3
CFC
TMO
under
visible
light
illumination.
This
was
proved
by
the
strong
interaction
between
pristine
materials
as
confirmed
XPS
density
functional
theory
(DFT)
calculations.
DFT
calculations
indicated
that
having
more
orbital
distribution
could
make
it
easier
to
capture
electrons
produce
radicals
electron
transfer.
Meanwhile
by-products
showed
no
sign
cytotoxicity
towards
human
embryonic
kidney
cell
line
(HEK
293)
intestinal
epithelial
(CACO-2).
findings
scavenger
experiments
ESR
measurements
•OH
•O2−
played
superior
role
decomposition
SMZ.
Furthermore,
S-scheme
charge
carrier
transfer
pathway
are
proposed
analysed.
study
paves
ways
into
promising
strategy
construction
based
heterojunction
decontamination
can
be
extended
other
applications
such
Fenton-like
reactions
persulfate
activation.
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Journal Year:
2024,
Volume and Issue:
684, P. 133167 - 133167
Published: Jan. 8, 2024
The
increasing
demand
for
clean
water
requires
the
development
of
simple,
cheap,
and
efficient
catalysts
systems
pollution
remediation.
To
develop
cheap
yet
hybrid
advanced
oxidation
processes
degradation
organic
pollutants
in
their
systematic
comparison
under
similar
conditions
to
make
informed
decisions
economically
feasible
sustainable
systems.
Visible
light
active
single
BiOI
N,
Pd
co-doped
TiO2
were
investigated
photocatalytic
ozonation
(PCO)
methylene
blue
(MB)
degradation.
Metal
non-metal
co-doping
improved
morphology,
band
structure
sites
on
surface
shift
its
absorption
into
visible
region.
MB
with
PCO
N,Pd-TiO2
was
practically
but
showed
improvement
mineralization
efficiency.
However,
surpassed
that
due
influenced
generated
free
radicals
during
processes.
system
progressed
through
existence
involvement
strongly
oxidizing
non-selective
hydroxyl
towards
enhanced
dye
intermediates
while
steered
by
superoxide
radical
is
selective
had
lower
efficiency
formed
despite
high
initial
efficacy.
work
demonstrated
semiconductors
like
as
potential
candidates
application
real
applications
matching
activities
UV
TiO2.
This
advances
use
based
environmental
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 16, 2024
Abstract
Complications
accompanying
photocatalyst
stability
and
recombination
of
exciton
charges
in
pollutants
degradation
has
been
addressed
through
the
construction
heterojunctions,
especially
S‐scheme
heterojunction
with
strong
distinctive
redox
centres.
Herein,
an
BiOBr
(BOR)
g‐C
3
N
4
PO
(CNPO)
catalyst
(BORCNPO)
oxygen
vacancy
(Ov)
was
synthesized
for
levofloxacin
(LVX)
oxytetracycline
(OTC)
photodegradation
under
visible
light.
The
3D/3D
BORCNPO
possessed
C−O−Br
bridging
bonds
efficient
charge
transfer
during
fabrication
heterojunction.
In‐situ
H
2
O
formation
affirmed
by
potassium
titanium
(IV)
oxalate
spectrophotometric
method
improved
mineralization
ability
BORCNPO7.5
catalyst.
Bi
0
surface
plasmon
resonance
(SPR)
enhanced
involvement
⋅O
−
which
increased
reaction
rate
increasing
cycling
experiments.
XPS
radical
trapping
experiments
supported
mechanism
high
LVX
times
higher
than
OTC
rate.
Mineralization
their
intermediates
were
demonstrated
florescence
excitation
emission
matrix
(FEEM)
quadruple
time
flight
performance
liquid
chromatography
(QTOF‐HPLC).
This
work
advances
development
highly
stable
catalysts
heterostructure.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 26, 2025
The
ongoing
challenge
of
water
pollution
necessitates
innovative
approaches
to
remove
organic
contaminants
from
wastewater.
In
this
work,
new
two-dimensional
S-scheme
heterojunction
photocatalysts
Bi2O3/CdS
and
MoS2/Bi2O3/CdS
that
are
intended
for
the
effective
photocatalytic
destruction
4-nitrophenol,
a
dangerous
pollutant,
synthesized
characterized.
Utilizing
solvothermal
method,
successfully
generated
these
ternary
nanocomposites,
which
were
characterized
through
various
techniques
including
X-ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
photoelectron
spectroscopy
(XPS),
high
resolution
transmission
electronmicroscopy
(HRTEM),
Brunauer-Emmett-Telle
(BET)
diffuse
reflectance
(DRS).
Our
results
demonstrated
achieved
an
86%
degradation
rate
while
composite
exhibited
exceptional
performance,
achieving
nearly
complete
(99%)
within
120
min
under
visible
light
irradiation.
Most
importantly
improved
activity
originated
release
internal
electric
field
in
heterojunction.
This
enhanced
is
attributable
synergistic
effects
heterojunctions
facilitate
more
charge
separation
generation
with
OP
RP
confirmed
synthesis
using
S-scheme.
further
by
XPS,
DRS,
XPS-VB
photocurrent
response.
These
findings
highlight
promising
application
advanced
real-world
wastewater
treatment
processes,
offering
sustainable
solution
combat
pollution.
