Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(49)
Published: Aug. 22, 2024
Abstract
Accelerated
anthropogenic
emission
of
greenhouse
gases
due
to
increasing
energy
demands
has
created
a
negative
impact
on
our
planet.
Therefore,
the
replacement
fossil
by
renewable
resources
become
paramount
interest,
both
societally
and
scientifically.
It
is
within
this
setting
that
organic
photocatalysts
have
emerged
as
new
generation
earth‐abundant
catalysts
for
conversion
solar
radiation
into
chemical
energy.
In
2014,
first
example
covalent
framework
(COF)
photocatalyst
hydrogen
evolution
reaction
was
reported
group,
which
not
only
marked
beginning
COF
photocatalysis
fuel
production
but
also
helped
accelerate
research
“soft
photocatalysis”
based
porous
polymers
in
general.
last
decade,
significant
progress
been
made
toward
developing
COFs
robust,
molecularly
precise
platforms
emulating
artificial
photosynthesis.
This
mini‐review
commemorates
10th
anniversary
gives
brief
historical
overview
milestones
field
since
its
inception
2014.
We
review
development
related
photocatalytic
transformations,
including
evolution,
oxygen
overall
water
splitting,
CO
2
reduction,
N
fixation,
alcohol
oxidation.
discuss
lessons
learned
design
structure‐property‐function
relationships
photocatalysts,
future
perspectives
challenges
are
given.
ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
9(4), P. 1915 - 1922
Published: April 3, 2024
Photocatalytic
overall
water
splitting
is
difficult
due
to
the
limitations
of
band
structure,
solar
absorption
efficiency,
and
carrier
recombination.
Rich
nitrogen
vacancies
containing
g-C3N4
nanosheets
were
prepared
by
spark
plasma
sintering.
By
modifying
highly
crystalline
graphitic
carbon
nitride
(g-C3N4)
with
rich
as
hydrogen-
oxygen-producing
ends
building
a
Z-scheme
heterostructure,
can
be
achieved.
Hydrogen
oxygen
evolution
rates
(λ
>
320
nm)
1.51
0.75
mmol
g–1
h–1
reported
highest
solar-to-hydrogen
efficiency
1.39%
for
pure
catalyst
cocatalysts
under
an
AM1.5G
filter
(100
mW
cm–2)
are
reached.
The
double-ended
modulation
method
improves
photocatalytic
high-crystallinity
defect-rich
g-C3N4.
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
Near-infrared
light
(NIR)-driven
photoelectrochemical
(PEC)
processes
are
mainly
faced
with
the
limitation
of
weak
photocurrents.
Here,
N-deficient
B-doped
g-C3N4/CdS
(NB-g-C3N4/CdS)
is
proposed
to
construct
a
NIR-driven
PEC
biosensor
assisted
by
CRISPR-Cas12a
system
for
determination
microRNA-21
(miRNA-21).
To
promote
optical
absorption
as
well
separation
photogenerated
electrons
and
holes
g-C3N4,
NB-g-C3N4/CdS
constructed
via
engineering
electronic
band
structure
in
terms
N
defect,
B
doping,
heterojunction,
achieving
high
performance.
obtain
luminescence
efficiency
exciting
under
NIR,
core–shell
NaYF4:Yb3+,
Tm3+@NaYF4
upconversion
nanoparticles
(UCNPs)
repaired
defects
prepared.
Furthermore,
rolling
circle
amplification
(RCA)-assisted
integrated
fragment
DNA
on
UCNPs,
sensitive
detection
miRNA-21.
On
one
hand,
uncleavaged
signal
probes
UCNPs
combined
through
π–π
stacking
interaction,
generating
photocurrents
irradiation
NIR.
other
cleavaged
which
cannot
link
exhibited
fluorescence
(FL)
signals.
The
PEC-FL
dual-mode
provides
mutual
authentication
testing
results
demonstrates
ultrasensitivity
(the
limit
1.1
fM
mode
7.0
FL
mode)
excellent
specificity,
promising
clinical
analysis
miRNA.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 30, 2024
Abstract
Photocatalytic
CO
2
reduction
technology,
capable
of
converting
low‐density
solar
energy
into
high‐density
chemical
energy,
stands
as
a
promising
approach
to
alleviate
the
crisis
and
achieve
carbon
neutrality.
Semiconductor
metal
oxides,
characterized
by
their
abundant
reserves,
good
stability,
easily
tunable
structures,
have
found
extensive
applications
in
field
photocatalysis.
However,
wide
bandgap
inherent
oxides
contributes
poor
efficiency
photocatalytic
reduction.
Defect
engineering
presents
an
effective
strategy
address
these
challenges.
This
paper
reviews
research
progress
defect
enhance
performance
summarizing
classifications,
preparation
methods,
characterization
techniques.
The
focus
is
on
engineering,
represented
vacancies
doping,
for
improving
oxide
photocatalysts.
includes
advancements
expanding
photoresponse
range,
enhancing
photogenerated
charge
separation,
promoting
molecule
activation.
Finally,
provides
summary
current
issues
challenges
faced
along
with
prospective
outlook
future
development
technology.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(44)
Published: May 16, 2024
Abstract
The
burgeoning
field
of
conjugated
microporous
polymers
(CMPs)
has
generated
widespread
interest
due
to
their
potential
as
photocatalysts
for
hydrogen
production
from
water.
Nevertheless,
photocatalytic
performance
is
sometimes
hindered
by
inadequate
charge
separation
and
transfer,
coupled
with
rapid
recombination.
Herein,
a
strategy
enhance
via
the
customization
π
‐bridges
through
modulation
heteroatoms
in
series
donor‐
‐acceptor
(D‐
‐A)
CMPs
proposed.
This
affords
optimized
energy
levels
improved
thus
boosting
efficiency.
Among
various
heteroatom
substitutions,
S‐doped
CMP
(10
mg)
demonstrates
highest
evolution
rate
203
µmol
h
−1
(AQY
450nm
=
7.4%)
under
visible
light
irradiation.
Subsequent
experimental
analysis
reveals
its
superior
can
be
largely
related
minimized
exciton
binding
energy,
facilitated
transfer
efficiency,
impeded
recombination
among
these
heteroatom‐doped
D‐
‐A
CMPs.
research
paves
way
rational
design
modification
organic
semiconductors
advanced
solar‐driven
photocatalysis
promoting
transfer.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 3, 2024
Abstract
Graphitic
carbon
nitride
(gC
3
N
4
)
is
an
attractive
photocatalyst
for
solar
energy
conversion
due
to
its
unique
electronic
structure
and
chemical
stability.
However,
gC
generally
suffers
from
insufficient
light
absorption
rapid
compounding
of
photogenerated
charges.
The
introduction
defects
atomic
doping
can
optimize
the
improve
carrier
separation
efficiency.
Herein,
high
efficiency
photocatalysis
hydrogen
evolution
in
visible
achieved
by
S‐modified
double‐deficient
site
strategy.
Defect
engineering
forms
abundant
unsaturated
sites
cyano
(─C≡N),
which
promotes
strong
interlayer
C─N
bonding
interactions
accelerates
charge
transport
.
S
tunes
semiconductors,
formation
C─S─C
bonds
optimizes
electron‐transfer
paths
bonding,
enhances
light.
Meanwhile,C≡N
acts
as
electron
trap
capture
photoexcited
electrons,
providing
active
reduction
H
+
hydrogen.
photocatalytic
SDCN
(1613.5
µmol
g
−1
h
31.5
times
higher
than
that
pristine
MCN
(51.2
).
situation
transfer
mechanism
photocatalysts
are
investigated
detail
a
combination
experimental
theoretical
calculations.