Advanced Sustainable Systems,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 8, 2024
Abstract
Sulfate
radicals
based
advanced
oxidation
processes
(SR‐AOPs)
have
gained
attention
recently
due
to
their
high
mineralization
capability
in
environmental
remediation.
The
persulfate
(PS)
activation
activity
of
cobalt‐based
semiconductors
has
epitomized
them
as
preferred
catalysts
for
SR‐AOPs
but
shortcomings
such
leaching,
and
loss
catalytic
active
sites
limit
applicability.
Herein,
two
different
strategies
are
employed
minimize
leaching
improve
charge
transportation
separation
efficient
PS
under
visible
light
irradiation
using
LDH/CaCO
3
/PS
Ba
2
CoMnO
5
AOP
systems
synthesized
by
solid
state
method.
achieved
17.9%
higher
reaction
rate
than
degradation
amoxicillin
(AMX)
with
TOC
efficacy.
Despite
SO
4
•−
OH
•
existence
involvement
both
systems,
the
pathways
mapped
from
QTOF‐HPLC‐MS
data
demonstrated
formation
during
AMX
mineralization.
This
work
demonstrates
novel
fabrication
brownmillerite
double
layered
perovskite
insulator
supported
LDH
pollution
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.
Advanced Sustainable Systems,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 26, 2025
Abstract
Fabrication
of
a
photocatalyst
with
the
desired
characteristics
high
charge
isolation
and
expeditious
photocatalytic
performance
is
crucial
in
photocatalysis.
Constructing
an
interfacial
chemically
bonded
S‐scheme
heterojunction
effective
path
to
realization
transfer
performance.
Herein,
Mg‐Bi
2
O
3
/dark
gray
g‐C
N
4
(MBOdCN)
Bi‐N
bond
bridges
successfully
constructed
using
situ
calcination
strategy
for
oxytetracycline
(OTC)
degradation.
The
MBOdCN
(1:5)
displays
outstanding
efficiency
rate
constant
99.56%
0.0235
min
−1
,
respectively.
synergy
n‐π*
transition,
Mg
defects,
Bi–N
enhances
heterojunction.
X‐ray
photoelectron
spectroscopy
(XPS)
analysis,
work
function
measurements,
density
functional
theory
(DFT)
reveal
formation
In
this
system,
trapping
experiments
electron‐spin
resonance
(ESR)
confirm
predominance
•
−
>
h
+
OH
during
OTC
degradation
pathways
byproducts
are
investigated
LC‐MS
toxicity
study
undertaken
on
materials.
This
provides
holistic
understanding
novel
by
introducing
chemical
defects
as
dual
channels.
