Chemical Physics Impact,
Год журнала:
2024,
Номер
8, С. 100577 - 100577
Опубликована: Март 27, 2024
Recently,
the
widespread
use
of
industrial
dyes,
such
as
methylene
blue,
is
raising
concerns
about
organic
pollutants.
These
compounds
can
persist
in
environment,
contaminating
water
sources
and
harming
aquatic
ecosystems.
The
aim
current
study
to
develop
a
nano-composite
by
mechanically
grinding
graphitic
carbon
nitride
g-C3N4
hematite
α-Fe2O3,
which
cloud
potentially
be
used
for
degradation
Methylene
bleu
pollutant.
obtained
heterojunction
nanocomposite,
named
1%
α-Fe2O3/g-C3N4
(Fe/gCN),
was
characterized
using
XRD,
ATR-FTIR,
SEM-EDS
analysis.
blue
(MB)
dye
assess
visible
light
photodegradation
efficiency
Fe/gCN
nanocomposite.
findings
revealed
notable
improvement
photocatalytic
performance
Furthermore,
band
gap
nanocomposite
narrowed
from
2,78
2,54
eV
Comparing
gCN
alone.
Compared
with
pure
α-Fe2O3
gCN,
nanoparticles
showed
enhanced
visible-light-induced
degrade
efficiently
99,64%
MB
dye.
optimal
conditions
were
determined
as:
pH
=10,3,
photocatalyst
mass
0,6
g/l
contact
time
t=
120
min
composite.
•OH
•O2−
radicals
identified
dominant
active
species
responsible
played
most
crucial
roles,
while
h+
e−
less
contributing
elimination.
Kinetic
studies
indicated
that
decomposition
followed
pseudo
second-order
(PSO)
model.
underscore
great
potential
light-induced
photodecomposition.
Energy & Fuels,
Год журнала:
2024,
Номер
38(9), С. 7637 - 7664
Опубликована: Апрель 12, 2024
In
recent
decades,
a
great
interest
in
photocatalytic
water
splitting
has
been
due
to
the
importance
of
sunlight
hydrogen
production
as
renewable
energy
source
reduce
global
warming
effects.
The
applications
metal
sulfide
semiconductors
photocatalysts,
chalcogenide
compounds,
with
advantages
wide
range
for
light
harvesting
and
tunable
bandgap,
may
be
restricted
by
limited
active
sites,
poor
conductivity,
photo
corrosion,
charge
recombination.
sulfur
vacancy
(SV)
effectively
addresses
these
issues
generates
H2
O2
attaining
adequate
water-splitting
because
improved
optoelectronic
features.
This
review
article
aims
comprehensively
highlight
synergistic
roles
SV
sulfides
amended
overall
activity.
SV-modulated
sulfides'
features
are
deliberated,
followed
different
advanced
synthetic
techniques
effectual
defect
generation.
specific
aspects
refining
optical
range,
dynamics
carrier,
photoinduced
surface
chemical
reactions
deeply
described
applications.
Finally,
summarized
vouchsafing
outlooks
opportunities
confronting
S-vacancy
engineered
sulfides-based
photocatalysts
elucidated.
It
would
expected
hoped
that
this
will
help
researchers
design/fabricate
better
sulfide-based
systems.
Energy & Fuels,
Год журнала:
2024,
Номер
38(10), С. 8406 - 8436
Опубликована: Май 1, 2024
As
one
of
the
best
sustainable
approaches
for
visible-light
production
hydrogen
(H2)
to
meet
energy
demands,
semiconductor-based
photocatalysis
has
received
broad
interest
in
recent
decades.
The
fundamental
restrictions
graphitic
carbon
nitride
(g-C3N4)
as
a
promising
metal-free
photocatalytic
semiconductor
water
splitting,
like
insufficient
harvesting
and
high
electron–hole
(e/h)
pairs
recombination,
have
limited
its
applications
this
goal.
In
regard,
optical,
charge
separation,
surface
features
g-C3N4
can
be
tuned
via
engineering
C/N
vacancies,
which
is
reviewed
here
splitting
by
g-C3N4.
Reports
confirm
that
enhanced
resulting
from
vacancies
are
helpful
adsorption
on
surface,
improving
water-splitting
kinetics.
First
Review,
improvements
structural
optical
characteristics
introducing
especially
nitrogen
will
discussed
illustrate
better
performance.
Then,
various
strategies
creating
controlling
reviewed.
critical
roles
optimizing
performance
also
described,
finally
advances
defective
oxidation
addressed.
