Russian Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
93(5), P. RCR5124 - RCR5124
Published: May 1, 2024
The
interest
of
the
global
scientific
community
in
problems
CO<sub>2</sub>
utilization
and
returning
to
carbon
cycle
has
markedly
increased
recent
years.
Among
various
transformation
processes,
photocatalytic
reduction
is
one
most
promising.
Currently,
much
attention
paid
photocatalysts
based
on
graphitic
nitride,
since
use
g-C<sub>3</sub>N<sub>4</sub>
makes
it
possible
perform
under
visible
or
solar
light
irradiation.
To
increase
efficiency,
subjected
modifications
with
popular
promising
approach
being
synthesis
composite
other
semiconductors
form
heterostructures.
Depending
type
semiconductor,
transfer
photogenerated
charge
carriers
these
systems
can
occur
by
mechanisms,
which
largely
determine
course
process
rates
formation
reaction
products.
This
review
addresses
studies
g-C<sub>3</sub>N<sub>4</sub>,
emphasis
placed
mechanisms
carrier
distribution
products
reduction.
<br>The
bibliography
includes
235
references.
Nano Energy,
Journal Year:
2023,
Volume and Issue:
108, P. 108228 - 108228
Published: Jan. 23, 2023
Carbon
nitride
is
one
of
the
most
promising
metal-free
photocatalysts
to
harvest
solar
light
for
energy
conversion
and
pollutant
treatment.
Unfortunately,
its
photocatalytic
performance
impeded
by
sluggish
charge
carriers
due
high
symmetry
unit
cells
chemical
structure.
Fabrication
an
internal
electric
field
(IEF)
in
carbon
nitride-based
evidenced
be
a
productive
strategy
actuate
fast
separation
photo-excited
navigate
their
migrations
active
sites
apparent
quantum
efficiency
(AQE)
throughputs.
In
current
work,
comprehensive
review
IEF
different
types
heterojunctions
will
well
presented.
Emphasis
put
on
latest
progress
generation
hosting
2-dimensional
(2D)
nanosheets
with
dimensional
materials,
modulation
interfacial
engineering
as
identification
monitoring.
Relationships
between
performances
various
processes
also
enlightened.
Finally,
this
suggest
challenges
future
perspectives
IEF-driven
photocatalysis.
This
brings
intrinsic
impetus
photocatalyst
forefront
anticipated
provide
guidance
configure
powered
2D
heterostructures
toward
efficient
environmental
purification.
Carbon Energy,
Journal Year:
2022,
Volume and Issue:
5(2)
Published: May 18, 2022
Abstract
The
persistent
increase
of
CO
2
levels
in
the
atmosphere,
already
exceeding
400
ppm,
urges
exploration
emission
reduction
and
recycling
technologies.
Ideally,
photocatalytic
conversion
into
valuable
hydrocarbons
realizes
solar‐to‐chemical
energy
conversion,
which
is
a
desirable
“kill
two
birds
with
one
stone”
strategy;
namely,
photoreduction
can
simultaneously
tackle
shortage
keep
global
carbon
balance.
Graphitic
nitride
(g‐C
3
N
4
)
working
on
reaction
deserves
highlight
not
only
for
metal‐free
feature
that
endows
it
low
cost,
tunable
electronic
structure,
easy
fabrication
properties
but
also
because
its
strong
ability.
present
review
concisely
summarizes
latest
advances
g‐C
‐based
photocatalysts
toward
reduction.
It
starts
discussion
thermodynamics
dynamics
aspects
process.
Then
modification
strategies
to
promote
have
been
discussed
detail,
including
surface
functionalization,
molecule
structure
engineering,
crystallization,
morphology
loading
cocatalyst,
constructing
heterojunction.
Meanwhile,
intrinsic
factors
affecting
activity
selectivity
are
analyzed
summarized.
In
end,
challenges
prospects
future
development
highly
presented.
Molecules,
Journal Year:
2023,
Volume and Issue:
28(1), P. 432 - 432
Published: Jan. 3, 2023
Graphitic
carbon
nitride
(g-C3N4),
with
facile
synthesis,
unique
structure,
high
stability,
and
low
cost,
has
been
the
hotspot
in
field
of
photocatalysis.
However,
photocatalytic
performance
g-C3N4
is
still
unsatisfactory
due
to
insufficient
capture
visible
light,
surface
area,
poor
electronic
conductivity,
fast
recombination
photogenerated
electron-hole
pairs.
Thus,
different
modification
strategies
have
developed
improve
its
performance.
In
this
review,
properties
preparation
methods
are
systematically
introduced,
various
approaches,
including
morphology
control,
elemental
doping,
heterojunction
construction,
nanomaterials,
discussed.
Moreover,
applications
energy
environmental
sustainability
summarized,
such
as
hydrogen
generation,
CO2
reduction,
degradation
contaminants
recent
years.
Finally,
concluding
remarks
perspectives
on
challenges,
suggestions
for
exploiting
g-C3N4-based
photocatalysts
presented.
This
review
will
deepen
understanding
state
art
g-C3N4,
fabrication,
modification,
application
sustainability.
InfoMat,
Journal Year:
2022,
Volume and Issue:
4(1)
Published: Jan. 1, 2022
CO2
capture
and
conversion
has
been
prospected
as
an
auspicious
technology
to
simultaneously
tackle
the
rise
in
global
emission
produce
value-added
fuels
with
goal
of
accomplishing
carbon
neutrality.
A
sustainable
route
achieve
this
is
via
utilization
solar
energy,
thereby
harnessing
abundant
nonexhaustive
resource
shift
our
reliance
away
from
rapidly
depleting
fossil
fuels.
Graphitic
nitride
(g-C3N4)
its
allotrope
have
earned
rank
a
fascinating
metal-free
photocatalyst
due
superior
stability,
high
surface-area-to-volume
ratio,
tunable
surface
engineering.
By
leveraging
these
properties,
robust
nitride-based
nanostructures
are
engineered
for
photocatalytic
energy-rich
C1C2
product,
which
indispensable
chemical
industry.
Thus,
review
presents
latest
panorama
experimental
computational
research
on
tuning
local
electronic,
coordination
environment,
charge
dynamics
optical
properties
low-dimensional
allotropes
toward
highly
selective
efficient
photoconversion.
To
name
few,
structural
engineering,
point-defect
heterojunction
construction,
cocatalyst
loading.
advance
frontier,
critical
insights
elucidated
establish
structure-performance
relationship
unravel
primary
factors
dictating
selectivity
molecules
reduction.
External-field
assisted
photocatalysis
such
electric
(photoelectro-)
heat
(photothermal)
discussed
uncover
synergistic
contributions
that
drive
development
photochemistry.
Last,
future
challenges
prospects
outlined
potential
application
solar-driven
conversion,
along
scale-up
strategy
economic
viewpoint
rational
high-efficiency
catalysts.
