Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Сен. 12, 2023
As
a
non-metallic
organic
semiconductor,
graphitic
carbon
nitride
(g-C3N4)
has
received
much
attention
due
to
its
unique
physicochemical
properties.
However,
the
photocatalytic
activity
of
this
semiconductor
faces
challenges
factors
such
as
low
electronic
conductivity
and
limited
active
sites
provided
on
surface.
The
morphology
structure
g-C3N4,
including
macro/micro
morphology,
crystal
can
affect
catalytic
activity.
Non-metallic
heteroatom
doping
is
considered
an
effective
method
tune
optical,
other
properties
g-C3N4.
Here,
we
synthesized
non-metal-doped
highly
crystalline
g-C3N4
by
one-pot
calcination
method,
which
enhanced
mesoporous
nature,
reduced
band
gap,
wide-range
photousability,
improved
charge
carrier
recombination,
electrical
was
improved.
Hence,
use
low-power
white-LED-light
illumination
(λ
≥
420
nm)
ultrasound
(US)
irradiation
synergistically
engendered
Methylene
Blue
(MB)
mineralization
efficiency
elevated
100%
within
120
min
following
pseudo-first-order
mechanism
under
condition
(i.e.,
pH
11,
0.75
g
L-1
O-doped
S-doped
20
mg
MB,
0.25
ml
s-1
O2,
spontaneous
raising
temperature).
In
addition,
rapid
removal
MB
sonophotocatalysis
4
times
higher
than
that
primary
photocatalysis.
And
radical
scavenging
experiments
showed
maximum
distribution
species
corresponds
superoxide
[Formula:
see
text].
More
importantly,
sonophotocatalytic
degradation
ability
remarkably
sustained
even
after
sixth
consecutive
run.
Nanoscale,
Год журнала:
2024,
Номер
16(9), С. 4352 - 4377
Опубликована: Янв. 1, 2024
The
review
highlights
charge
transfer,
improved
photocatalytic
performance,
and
possible
photocatalysis
schemes
in
TiO
2
-based
composites.
It
also
addresses
perspectives
challenges
transfer
mechanisms
for
photocatalysis.
Carbon Neutralization,
Год журнала:
2024,
Номер
3(4), С. 557 - 583
Опубликована: Май 8, 2024
Abstract
Currently,
the
concentration
of
carbon
dioxide
(CO
2
)
has
exceeded
400
ppm
in
atmosphere.
Thus,
there
is
an
urgent
need
to
explore
CO
reduction
and
utilization
technologies.
Photocatalytic
technology
can
convert
valuable
hydrocarbons
(CH
4
,
CH
3
OH,
C
H
5
etc.),
realizing
conversion
solar
energy
chemical
as
well
solving
problems
fossil
fuel
shortage
global
warming.
Graphitic
nitride
(g‐C
N
),
a
two‐dimensional
nonmetallic
semiconductor
material,
shows
great
potential
field
photoreduction
due
its
moderate
bandgap,
easy
synthesis
method,
low
cost,
visible
light
response
properties.
This
review
elaborates
research
progress
g‐C
‐based
photocatalysts
for
photocatalytic
reduction.
The
modification
strategies
(e.g.,
morphology
engineering,
elemental
doping,
crystallinity
modulation,
cocatalyst
modification,
constructing
heterojunction)
application
have
been
discussed
detail.
Finally,
challenges
development
prospects
materials
are
presented.
Abstract
Graphitic
carbon
nitride
(g‐C
3
N
4
)
is
a
highly
recognized
two‐dimensional
semiconductor
material
known
for
its
exceptional
chemical
and
physical
stability,
environmental
friendliness,
pollution‐free
advantages.
These
remarkable
properties
have
sparked
extensive
research
in
the
field
of
energy
storage.
This
review
paper
presents
latest
advances
utilization
g‐C
various
storage
technologies,
including
lithium‐ion
batteries,
lithium‐sulfur
sodium‐ion
potassium‐ion
supercapacitors.
One
key
strengths
lies
simple
preparation
process
along
with
ease
optimizing
structure.
It
possesses
abundant
amino
Lewis
basic
groups,
as
well
high
density
nitrogen,
enabling
efficient
charge
transfer
electrolyte
solution
penetration.
Moreover,
graphite‐like
layered
structure
presence
large
π
bonds
contribute
to
versatility
preparing
multifunctional
materials
different
dimensions,
element
group
doping,
conjugated
systems.
characteristics
open
up
possibilities
expanding
application
devices.
article
comprehensively
reviews
progress
on
highlights
potential
future
applications
this
field.
By
exploring
advantages
unique
features
,
provides
valuable
insights
into
harnessing
full
applications.
Porous
aromatic
frameworks
(PAFs)
are
a
fundamental
group
of
porous
materials
characterized
by
their
distinct
structural
features
and
large
surface
areas.
These
synthesized
from
building
units
linked
strong
carbon–carbon
bonds,
which
confer
exceptional
rigidity
long-term
stability.
PAFs
functionalities
may
arise
directly
the
intrinsic
chemistry
or
through
postmodification
motifs
using
well-defined
chemical
processes.
Compared
to
other
traditional
such
as
zeolites
metallic-organic
frameworks,
demonstrate
superior
stability
under
severe
treatments
due
robust
bonding.
Even
in
challenging
environments,
ease
functionalization
flexibility
specificity.
Research
on
has
significantly
expanded
accelerated
over
past
decade,
necessitating
comprehensive
overview
key
advancements
this
field.
This
review
provides
an
in-depth
analysis
recent
advances
synthesis,
functionalization,
dimensionality
PAFs,
along
with
distinctive
properties
wide-ranging
applications.
explores
innovative
methodologies
strategies
for
functionalizing
structures,
manipulation
tailor
specific
potential
Similarly,
application
areas,
including
batteries,
absorption,
sensors,
CO2
capture,
photo-/electrocatalytic
usages,
supercapacitors,
separation,
biomedical
discussed
detail,
highlighting
versatility
addressing
modern
scientific
industrial
challenges.
