Abstract
The
rational
design
and
synthesis
of
novel
semiconductor
nano‐/quantum
materials
have
been
ambitiously
pursued
in
the
field
photocatalysis
as
technology
is
promising
critical
for
attaining
future
energy
environmental
sustainability.
Herein,
integrity
aromatic
carbon
into
graphitic
nitride
(CN)
at
same
molecular
plane
with
a
few
2D
layers
achieved
by
using
modulated
precursors
CN,
forming
regulated
ultrathin
CN
(CUCN)
improved
charge
transfer
kinetics
photocatalytic
hydrogen
production.
grafted
graphite
rings
adjacent
to
frameworks
induce
significant
rearrangement
relocalization
overall
framework,
form
conjugated
sp
2
hybridized
interfaces
internal
electric
fields
that
drive
separation
directional
photogenerated
electrons
from
sheets
towards
intralayer
regions,
where
evolution
reaction
occurs
extensively,
yielding
largely
increased
HER
rate
2231.8
µmol
g
−1
h
8.2
times
relative
well
remarkable
apparent
quantum
yield
2.93%
under
monochromatic
light
420
nm.
high
physicochemical
stability
low
cost
CUCN
make
it
potential
benchmark
photocatalyst
can
be
readily
modified
via
element
doping,
heterojunction
introduction,
defect
engineering,
so
on,
further
enhance
its
performance.
Energy Advances,
Год журнала:
2024,
Номер
3(7), С. 1472 - 1504
Опубликована: Янв. 1, 2024
The
recent
progress
in
visible
light
driven
photocatalysis
by
describing
the
integration
of
TiO
2
with
variety
materials,
and
how
it
helps
tailoring
electronic,
structural
optical
properties
towards
improved
solar
H
production
activity.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 17, 2024
Abstract
Hydrogen
peroxide
(H
2
O
)
is
a
crucial
chemical
used
in
numerous
industrial
applications,
yet
its
manufacturing
relies
on
the
energy‐demanding
anthraquinone
process.
Solar‐driven
synthesis
of
H
gaining
traction
as
promising
research
area,
providing
sustainable
method
for
production.
Herein,
controllable
activation
n
→
π*
electronic
transition
presented
to
boost
photocatalytic
evolution
ionic
carbon
nitrides.
This
enhancement
achieved
through
simultaneous
introduction
structural
distortions
and
defect
sites
(─C
≡
N
groups
vacancies)
into
KPHI
framework.
The
optimal
catalyst
(
2%Ox‐
KPHI)
reached
an
apparent
quantum
yield
41%
at
410
nm
without
need
any
cocatalysts,
outperforming
most
previously
reported
nitride‐based
photocatalysts.
Extensive
experimental
characterizations
theoretical
calculations
confirm
that
corrugated
configuration
presence
defects
significantly
broaden
light
absorption
profile,
improve
carrier
separation
migration,
promote
adsorption,
lower
energy
barriers
desorption.
Transient
spectroscopy
indicates
enhanced
performance
2%Ox
‐KPHI
largely
attributed
preferential
migration
electrons
over
extended
timescales,
following
diffusion
geminate
carriers
across
PHI
sheets.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(49)
Опубликована: Авг. 27, 2024
Abstract
As
organic
semiconductor
materials
gain
increasing
prominence
in
the
realm
of
photocatalysis,
two
carbon‐nitrogen
materials,
poly
(heptazine
imide)
(PHI)
and
(triazine
(PTI),
have
garnered
extensive
attention
applications
owing
to
their
unique
structure
properties.
This
review
elaborates
on
distinctive
physical
chemical
features
PHI
PTI,
emphasizing
formation
mechanisms
ensuing
Furthermore,
it
elucidates
intricate
correlation
between
energy
band
structures
various
photocatalytic
reactions.
Additionally,
outlines
primary
synthetic
strategies
for
constructing
along
with
characterization
techniques
identification.
It
also
summarizes
enhancing
performance
whose
advantages
are
discussed.
Finally,
highlights
promising
prospects
challenges
PTI
as
photocatalysts.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 28, 2025
Abstract
Poly
(triazine
imide)
(PTI),
a
crystalline
allotrope
of
polymeric
carbon
nitride,
holds
great
promise
for
photocatalytic
overall
water
splitting
(OWS).
However,
previous
results
reveal
that
both
H
2
and
O
evolution
cocatalysts
prefer
to
deposit
on
the
prismatic
facets,
which
in
undesired
backward
reaction
current
unsatisfied
quantum
efficiency
OWS
reaction.
Herein,
situ
decoration
with
heptazine
based
nitride
(HCN)
at
interface
PTI
is
successfully
employed
construct
S‐scheme
hetero‐phase
junctions.
The
built‐in
electric
field
HCN
endows
directed
carrier
separation,
thereby
enabling
separation
redox
sites,
as
validated
by
theoretical
experimental
results.
Accordingly,
as‐synthesized
PTI/HCN
spatially
separated
charge
carriers
restrained
achieves
solar‐to‐hydrogen
energy
conversion
0.35%
