Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Jan. 27, 2024
Abstract
Graphitic
carbon
nitride
(g–C
3
N
4
),
an
organic
photocatalyst
was
reported
to
have
beneficial
properties
be
used
in
wastewater
treatment
applications.
However,
g–C
,
its
bulk
form
found
poor
photocatalytic
degradation
efficiency
due
inherent
limitations
such
as
specific
surface
area
and
fast
electron–hole
pair
recombination
rate.
In
this
study,
we
tuned
the
physiochemical
of
by
direct
thermal
exfoliation
(TE–g–C
)
examined
their
against
abundant
textile
dyes
methylene
blue
(MB),
methyl
orange
(MO),
rhodamine
B
(RhB).
The
efficiencies
for
MB,
MO,
RhB
are
92
±
0.18%,
93
0.31%,
95
0.4%
respectively
60
min
UV
light
irradiation.
increased
with
increase
temperature.
prepared
catalysts
were
characterized
using
FTIR,
XRD,
FE-SEM,
EDAX,
BET,
UV-DRS.
BET
analysis,
TE–g–C
samples
showed
improved
(48.20
m
2
/g)
when
compared
(5.03
/g).
Further,
had
2.98
times
higher
adsorption
than
ones.
free
radicals
scavenging
studies
revealed
that
superoxide
played
important
role
photodegradation
dyes,
hydroxyl
radical
(
.
OH)
photo-induced
holes
(h
+
Photoluminescence
(PL)
emission
electrochemical
impedance
spectroscopy
(EIS)
spectra
indicated
a
lowered
pairs’
rate
charge
transfer
respectively.
excellent
stability
up
5
cycles
only
minor
decrease
activity
from
92%
86.2%.
These
findings
proved
removal
wastewater.
Advanced Composites and Hybrid Materials,
Journal Year:
2024,
Volume and Issue:
7(2)
Published: March 8, 2024
Abstract
Perfluorooctanoic
acid
(PFOA)
is
a
highly
persistent
organic
pollutant
of
global
concern.
A
novel
nanocomposite
composed
ZnO
nanoparticles
and
citric
acid-modified
g-C
3
N
4
was
synthesized
by
ball
milling
process.
The
more
efficient
than
pure
ball-milled
for
PFOA
elimination
under
visible
light
irradiation.
optimal
hybrid
photocatalyst,
produced
the
addition
5
wt%
,
demonstrated
significantly
better
performance
removal
UV
irradiation,
with
apparent
rate
constants
0.468
h
−1
0.097
respectively.
peroxymonosulfate
(0.53
g
L
)
increased
removal,
clarifying
crucial
effect
sulfate
radicals
on
photodegradation.
In
comparison,
not
effective
even
peroxymonosulfate.
Further
experiments
dark
conditions
identified
surface
adsorption
photocatalyst
as
key
process
in
total
removal.
summary,
ZnO@citric
graphitic
carbon
nitride
nanocomposites
due
to
combined
action
from
photodegradation,
dominating
mechanism.
International Journal of Molecular Sciences,
Journal Year:
2022,
Volume and Issue:
24(1), P. 346 - 346
Published: Dec. 25, 2022
Currently,
the
synthesis
of
active
photocatalysts
for
evolution
hydrogen,
including
based
on
graphite-like
carbon
nitride,
is
an
acute
issue.
In
this
review,
a
comprehensive
analysis
state-of-the-art
studies
graphic
nitride
as
photocatalyst
hydrogen
production
under
visible
light
presented.
various
approaches
to
g-C3N4
reported
in
literature
were
considered,
methods
modifying
and
improving
structural
photocatalytic
properties
material.
A
thorough
has
shown
that
most
commonly
used
are
alterations
textural
characteristics
by
introducing
templates,
pore
formers
or
pre-treatment
method,
doping
with
heteroatoms,
modification
metals,
creation
composite
photocatalysts.
Next,
authors
considered
their
own
detailed
study
graphitic
different
pre-treatments
respective
demonstrate
high
efficiency
stability
hydrogen.
Particular
attention
was
paid
describing
effect
state
platinum
cocatalyst
activity
resulting
photocatalyst.
The
decisive
factors
leading
materials
discussed.
