Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(39)
Published: July 2, 2024
Abstract
Photocatalytic
synthesis
of
H
2
O
is
an
advantageous
and
ecologically
sustainable
alternative
to
the
conventional
anthraquinone
process.
However,
achieving
high
conversion
efficiency
without
sacrificial
agents
remains
a
challenge.
In
this
study,
two
covalent
organic
frameworks
(COF−O
COF−C)
were
prepared
with
identical
skeletal
structures
but
their
pore
walls
anchored
different
alkyl
chains.
They
used
investigate
effect
chemical
microenvironment
pores
on
photocatalytic
production.
Experimental
results
reveal
change
hydrophilicity
in
COF−O,
leading
suppressed
charge
recombination,
diminished
transfer
resistance,
accelerated
interfacial
electron
transfer.
An
apparent
quantum
yield
as
10.3
%
(λ=420
nm)
can
be
achieved
through
oxygen
reduction
reaction.
This
among
highest
ever
reported
for
polymer
photocatalysts.
study
may
provide
novel
avenue
optimizing
activity
selectivity
generation.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(49)
Published: Aug. 14, 2023
Abstract
Benefiting
from
the
excellent
structural
tunability,
robust
framework,
ultrahigh
porosity,
and
rich
active
sites,
covalent
organic
frameworks
(COFs)
are
widely
recognized
as
promising
photocatalysts
in
chemical
conversions,
emerged
hydrogen
peroxide
(H
2
O
)
photosynthesis
2020.
H
,
serving
an
environmental‐friendly
oxidant
a
liquid
fuel,
has
attracted
increasing
researchers
to
explore
its
potential.
Over
past
few
years,
numerous
COFs‐based
developed
with
encouraging
achievements
production,
whereas
no
comprehensive
review
articles
exist
summarize
this
specific
significant
area.
Herein
we
provide
systematic
overview
of
advances
challenges
COFs
photocatalytic
production.
We
first
introduce
priorities
photosynthesis.
Then,
various
strategies
improve
efficiency
discussed.
The
perspective
outlook
for
future
emerging
field
finally
offered.
This
timely
will
pave
way
development
highly
efficient
practical
production
value‐added
chemicals
not
limited
.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(22), P. 7949 - 8004
Published: Jan. 1, 2023
Photocatalytic
organic
reactions,
harvesting
solar
energy
to
produce
high
value-added
chemicals,
have
attracted
increasing
attention
as
a
sustainable
approach
address
the
global
crisis
and
environmental
issues.
Reticular
framework
materials,
including
metal-organic
frameworks
(MOFs)
covalent
(COFs),
are
widely
considered
promising
candidates
for
photocatalysis
owing
their
crystallinity,
tailorable
pore
environment
extensive
structural
diversity.
Although
design
synthesis
of
MOFs
COFs
been
intensively
developed
in
last
20
years,
applications
photocatalytic
transformations
still
preliminary
stage,
making
systematic
summary
necessary.
Thus,
this
review
aims
provide
comprehensive
understanding
useful
guidelines
exploration
suitable
MOF
COF
photocatalysts
towards
appropriate
reactions.
The
commonly
used
reactions
categorized
facilitate
identification
reaction
types.
From
practical
viewpoint,
fundamentals
experimental
design,
active
species,
performance
evaluation
external
conditions,
discussed
detail
easy
experimentation.
Furthermore,
latest
advances
COFs,
composites,
comprehensively
summarized
according
actual
sites,
together
with
discussion
structure-property
relationship.
We
believe
that
study
will
be
helpful
researchers
novel
reticular
various
synthetic
applications.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
14(5)
Published: Dec. 11, 2023
Abstract
The
development
of
efficient
photocatalysts
for
artificial
photocatalytic
energy
conversion
is
an
intriguing
strategy.
Promisingly,
conjugated
polymers
(CPs)
have
been
actively
investigated
as
alternatives
to
traditional
inorganic
semiconductors
photocatalysis
due
their
molecularly
tunable
optoelectronic
properties,
thus
providing
a
great
platform
molecular
design.
Incorporating
donor
(D)
and
acceptor
(A)
units
into
the
backbone
CPs
ensures
adequate
D−A
interface,
which
essential
facilitating
charge
separation.
This
approach
also
allows
bandgaps
leading
significant
progress
in
conversions
recent
years.
Here,
fundamentals
D–A
type
are
initially
outlined,
followed
by
advanced
experimental
methods
density
functional
theory
(DFT)
calculations
investigating
carrier
dynamics.
Then,
detailed
exposition
synthetic
strategies
carried
out.
Their
extensive
applications
diverse
energy‐related
conversions,
such
hydrogen
evolution,
oxygen
overall
water
splitting,
CO
2
reduction,
N
H
O
evolution
comprehensively
presented.
review
provides
new
comprehensive
insights
molecular‐level
design
catalysts
boosted
conversion,
expected
further
advance
photocatalysis.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(14), P. 4907 - 4928
Published: Jan. 1, 2024
Recent
studies
on
enhancing
charge
carrier
behavior
through
electric
effects
for
efficient
photocatalysis
are
summarized,
evaluating
the
in-depth
function
of
these
effects.
This
provides
unique
perspectives
to
optimize
photocatalytic
processes.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(40)
Published: July 18, 2024
Abstract
The
integration
of
electron
donor
(D)
and
acceptor
(A)
units
into
covalent
organic
frameworks
(COFs)
has
received
increasing
interest
due
to
its
potential
for
efficient
photocatalytic
hydrogen
(H
2
)
evolution
from
water.
Nevertheless,
the
advancement
D–A
COFs
is
still
constrained
by
limited
investigations
on
engineering,
which
enables
highly
effective
charge
transfer
pathways
in
deliver
photoexcited
electrons
a
preferential
orientation
enhance
performance.
Herein,
two
systems
with
D–A–A
configurations
based
molecular
engineering
strategy
are
proposed
construct
three
distinct
COFs.
Specifically,
TAPPy‐DBTDP‐COF
merging
one
pyrene‐based
benzothiadiazole
acceptors
realized
an
average
H
rate
12.7
mmol
h
−1
g
under
visible
light,
among
highest
ever
reported
typical
D–A‐type
COF
systems.
combination
experimental
theoretical
analysis
signifies
crucial
role
dual‐acceptor
arrangement
promoting
exciton
dissociation
carrier
migration.
These
findings
underscore
significant
structural
design,
conducive
separation
holes
resulting
superior
activities.
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.
