International Journal of Environmental & Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
unknown, P. 1 - 18
Published: Sept. 21, 2023
ABSTRACTThis
investigation
looks
at
the
structural
and
optical
properties
of
g-C3N4
(graphitic
carbon
nitride)
its
doped
analogs,
indicated
as
x@g-C3N4
(where
x
indicates
oxygen,
potassium,
nitrogen).
The
study
investigates
effect
these
dopants
on
material's
physicochemical
properties,
focusing
their
applicability
for
photocatalytic
applications.
alterations
in
crystallinity
shape
caused
by
doping
were
shown
functional
analyses
utilising
XRD,
FTIR,
SEM,
XPS
analysis.
UV-DRS
PL
measurements
characteristics
revealed
bandgap
changes
charge
recombination
due
to
dopant
inclusion.
photodegradation
performance
organic
pollutants
under
visible
light
was
examined,
indicating
improved
activity
oxygen-doped
compared
pristine
other
materials.
Adsorption
capabilities
scavenger
tests
explored
better
understand
reactive
species'
role
process.
Furthermore,
VB-XPS
analysis,
combined
with
results,
allowed
us
propose
a
comprehensive
mechanism.
This
research
not
only
increases
our
understanding
impacts
g-C3N4,
but
it
also
sheds
complexities
behaviour,
paving
road
use
environmental
remediation
sustainable
energy
conversion.KEYWORDS:
Doped
g-C3N4oxygendopingphotocatalytic
degradationROS
quantification
Disclosure
statementNo
potential
conflict
interest
reported
author(s).
Journal of Environmental Science and Health Part B,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 12
Published: Jan. 23, 2025
The
widespread
use
of
antibiotics
has
led
to
significant
water
pollution.
Photocatalysis
can
effectively
degrade
antibiotics,
but
the
performance
is
greatly
limited
by
photogenerated
carrier
recombination
in
photocatalytic
material
g-C3N5.
Constructing
heterojunctions
enhance
interfacial
charge
transfer,
leading
more
stable
and
efficient
photocatalysis.
This
study
synthesized
a
Fe2O3/g-C3N5
heterojunction
using
solvothermal
method.
Z-scheme
transfer
mechanism
facilitated
separation
carriers,
preserving
photoelectrons
holes
with
high
redox
activity.
process
generated
substantial
amount
highly
reactive
free
radicals
such
as
·O2-
·OH,
enabling
degradation
tetracycline
(TC).
Under
optimal
conditions
initial
concentration
TC
was
200
mg/L,
quality
ratio
Fe2O3
g-C3N5
1:2,
catalyst
dosage
50
mg
pH
=
7.0,
rate
reached
92.46%
within
60
min
visible
light
irradiation.
activity's
enhancement
attributed
broad
spectral
absorption
effective
separation.
Furthermore,
be
affected
presence
inorganic
salt
ions
HCO3-
CO32-.
