Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(12)
Published: Dec. 6, 2023
Abstract
As
a
chemical
product
with
rapidly
expanding
demand
in
the
field
of
modern
energy
and
environmental
applications,
hydrogen
peroxide
(H
2
O
)
has
garnered
widespread
attention.
However,
existing
industrial
production
H
is
plagued
by
high
consumption,
harmful
waste
emission,
severe
safety
issues,
making
it
difficult
to
satisfy
environmental/economic
concept.
Artificial
photosynthesis
offers
viable
strategy
for
green
sustainable
since
uses
sunlight
as
an
source
initiate
reaction
oxygen
water
produce
.
Among
various
photocatalysts,
covalent
organic
frameworks
(COFs),
featuring
highly
ordered
skeletons
well‐defined
active
sites,
have
emerged
promising
photocatalysts
production.
This
review
presents
nascent
burgeoning
area
photocatalytic
based
on
COFs.
First,
brief
overview
technology
provided,
followed
detailed
introduction
principles
evaluation
generation.
Subsequently,
latest
research
progress
judicious
design
COFs
expounded,
particular
emphasis
manipulating
electronic
structures
redox
sites.
Finally,
outlook
challenges
future
opportunities
proposed,
hope
stimulating
further
explorations
novel
molecular‐designed
photosynthesis.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(43)
Published: Aug. 8, 2022
Abstract
Artificial
photocatalysis
offers
a
clean
approach
for
producing
H
2
O
.
However,
the
poor
selectivity
and
activity
of
production
hamper
traditional
industrial
applications
emerging
photodynamic
therapy
(PDT)/chemodynamic
(CDT).
Herein,
we
report
C
5
N
photocatalyst
with
conjugated
C=N
linkage
selective
efficient
non‐sacrificial
in
both
normoxic
hypoxic
systems.
The
strengthened
delocalization
π‐electrons
by
linkers
downshifted
band
position,
thermodynamically
eliminating
side
evolution
reaction
kinetically
promoting
water
oxidation.
As
result,
had
competitive
solar‐to‐chemical
conversion
efficiency
0.55
%
overall
exhibited
far
highest
under
conditions
(698
μM
h
−1
).
was
further
applied
to
PDT/CDT
outstanding
performance
apparent
cancer
cell
death
synchronous
bioimaging.
study
sheds
light
on
photosynthesis
carbon
nitrides
health
applications.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(23)
Published: March 25, 2023
Rational
design
of
polymer
structures
at
the
molecular
level
promotes
iteration
high-performance
photocatalyst
for
sustainable
photocatalytic
hydrogen
peroxide
(H2
O2
)
production
from
oxygen
and
water,
which
also
lays
basis
revealing
reaction
mechanism.
Here
we
report
a
benzoxazine-based
m-aminophenol-formaldehyde
resin
(APFac)
polymerized
ambient
conditions,
exhibiting
superior
H2
yield
long-term
stability
to
most
polymeric
photocatalysts.
Benzoxazine
structure
was
identified
as
crucial
active
segment
in
APFac.
Favorable
adsorption
oxygen/intermediates
on
benzoxazine
commendable
product
selectivity
accelerated
kinetically
stepwise
single-electron
reduction
reaction.
The
proposed
phenolic
provides
possibility
batches
industrial
application,
sheds
light
de
novo
analysis
metal-free
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(21)
Published: Feb. 26, 2023
Abstract
Harnessing
solar
energy
to
produce
hydrogen
peroxide
(H
2
O
)
from
water
O)
and
dioxygen
(O
via
artificial
photosynthesis
is
an
attractive
route.
To
achieve
high
solar‐to‐H
conversion
efficiency,
herein,
interfacial
self‐assembly
strategy
adopted
pattern
mesoporous
resorcinol‐formaldehyde
resin
(MRF)
onto
reduced
graphene
oxide
(rGO)
form
sandwich‐structured
rGO@MRF
polymeric
photocatalysts.
The
internal
layer
that
mimics
the
electron
transport
chain
of
plant
leaf,
can
effectively
transfer
electrons,
promote
two‐electron
reduction
.
Moreover,
channels
mimic
stomata,
beneficially
boost
fluid
velocity,
enrichment
,
diffusion
H
Consequently,
developed
metal‐free
material
exceptional
solar‐to‐chemical
efficiency
1.23%.
This
ingenious
interface
engineering
brings
new
opportunities
for
design
efficient
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(6), P. 8066 - 8075
Published: Feb. 1, 2023
Conversing
oxygen
(O2)
to
hydrogen
peroxide
(H2O2)
driven
by
solar
energy
is
a
promising
H2O2
onsite
production
route
but
often
short
of
efficient
and
durable
photocatalysts.
Herein,
strong
π-π
conjugate
polycyclic
aromatic
benzene
acetylene
units
have
been
constructed
into
new
covalent
organic
frameworks
(COFs)
linked
imine
C═N
bonding.
These
COFs
demonstrated
two-dimensional
hexagonal
crystalline
with
higher
crystallinity
larger
surface
area
(>600
m2
g-1).
Covalent
benzene-acetylene
possessed
appropriate
visible
light-responsive
band
structure
the
suppressed
charge
recombination
rate.
The
-OH
groups
on
their
enable
them
be
weakly
hydrophilic.
As
result,
it
served
as
high-performance
photocatalysts
for
in
water-benzyl
alcohol
(BA)
two-phase
system.
It
delivered
rate
1240
μmol
h-1
gcat-1
catalytic
efficiency
within
60
h,
comparable
best
COF-based
catalysts.
This
study
provides
an
photocatalytic
system
based
hydrophilic
imine-linked
EES Catalysis,
Journal Year:
2024,
Volume and Issue:
2(2), P. 411 - 447
Published: Jan. 1, 2024
This
review
comprehensively
summarizes
the
recent
advances
on
crystalline
carbon
nitrides,
including
their
preparation,
optimization
strategies,
photocatalytic
applications,
as
well
challenges
and
prospects.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(7), P. 4728 - 4737
Published: March 13, 2024
Imine-linked
isomeric
covalent
organic
frameworks
(COFs)
with
opposite
linkage
orientations
are
not
rare,
but
their
structure
and
photocatalytic
property
corrections
still
puzzling,
let
alone
the
emerging
photosynthetic
H2O2
performance.
Herein,
a
pair
of
COFs
(TB-COF
TA-COF)
reversed
imine
linkages
was
fabricated.
Compared
to
TA-COF,
TB-COF
exhibited
larger
dipole
moments
better
charge
carrier
separation
efficiency,
resulting
in
superior
photosynthesis
capability
via
dominant
oxygen
reduction
reaction
(ORR)
paths
(O2–O2•––H2O2
O2–O2•––O21–H2O2)
feeble
water
oxidation
(WOR)
paths.
With
no
sacrificial
agents
air,
rates
were
5186
μmol
g–1
h–1
4111
natural
seawater,
respectively.
The
seawater-produced
can
be
directly
utilized
for
tetracycline
degradation,
manifesting
big
picture
wastewater
treatment
by
H2O2.
Theoretical
calculations
revealed
that
hydroxyl-rich
benzene
ring
photooxidation
part
triazine
unit
primary
photoreduction
part.
Through
linkage-orientation
regulation,
electronic
structures,
migration
property,
energy
barrier
rate
determination
step
2e–
ORR
WOR
well-modulated.
current
work
provides
insight
into
effect
orientation
on
performance
may
enlighten
design
catalysts
photosynthesis.
