Catalysts,
Journal Year:
2024,
Volume and Issue:
15(1), P. 21 - 21
Published: Dec. 29, 2024
Photocatalysis
technology
has
been
shown
to
be
a
promising
and
effective
method
for
solving
the
growing
energy
environmental
challenges
through
use
of
solar
energy.
In
this
work,
Ce2S3
semiconductor
photocatalysts
decorated
with
small
amounts
reduced
graphene
oxides
are
successfully
synthesized
by
hydrothermal
calcination
methods.
The
Ce2S3-RGO
nanocomposite
shows
outstanding
photocatalytic
performance
on
degradation
tetracycline
(TC).
combination
RGO
significantly
promotes
separation
photon-generated
carriers.
rate
TC
achieves
76%
under
visible
light,
which
is
2.5
times
over
pure
sample.
addition,
series
characterizations
demonstrate
that
introduction
expands
light
absorption
range
increases
number
active
sites.
This
work
introduces
pivotal
role
oxide
in
field
offers
novel
insights
reasonable
construction
composite
photocatalysts.
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(10), P. 8406 - 8436
Published: May 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.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(3), P. 334 - 334
Published: Jan. 26, 2025
Vacancy
defect
graphitic
carbon
nitride
(g-C3N4)
and
conjugated
polyimide
(PI)
polymer
photocatalysts
have
become
increasingly
recognized
as
metal-free
featuring
an
appropriate
bandgap.
The
narrow
absorption
spectrum
of
visible
light
the
rapid
recombination
rate
photoexcited
charge
carriers
in
PI
polymers
g-C3N4
impede
its
photocatalytic
performance.
presence
oxygen
vacancies
(OVs)
photocatalysts,
well
nitrogen
(NVs)
(CVs)
g-C3N4,
can
significantly
enhance
migration
photogenerated
electrons.
Adding
to
improve
electronic
structure
band
gap
width
greatly
efficiency
g-C3N4.
Defect
engineering
is
important
for
increasing
ability
PI-polymer
There
remains
a
notable
absence
thorough
review
papers
covering
synthesis,
characterization,
applications
vacancy-rich
photocatalysis.
This
paper
examines
roles
OVs
PI-polymer,
NVs,
CVs
thoroughly
summarizes
preparation
approaches
employed
before
after,
during
polymerization.
scrutinizes
spectroscopic
characterization
techniques,
such
EPR,
XPS,
PAS,
XRD,
FTIR,
NMR,
vacancy
analysis.
We
also
reviewed
role
vacancies,
which
include
absorption,
carrier
separation,
transfer
dynamics.
could
serve
comprehensive
understanding,
vacancy-engineered
design
framework,
practical
guide
synthesizing
characterizing.
