Giant,
Journal Year:
2024,
Volume and Issue:
20, P. 100335 - 100335
Published: Aug. 23, 2024
Covalent
Organic
Frameworks
(COFs)
have
emerged
as
highly
promising
materials
for
the
photocatalytic
production
of
hydrogen
peroxide
(H2O2)
due
to
their
exceptional
structural
tunability,
robust
frameworks,
and
high
porosity.
The
efficient
overall
photosynthesis
H2O2
hinges
on
simultaneous
occurrence
oxygen
reduction
reaction
(ORR)
water
oxidation
(WOR).
This
review
introduces
recent
progress
in
developing
key
approaches
such
backbone
engineering
incorporation
side
groups
facilitate
these
critical
pathways.
For
example,
innovative
COF
designs,
spatially
separating
redox
centers,
demonstrated
significant
improvements
performance.
Moreover,
introduction
thioether-decorated
triazine-based
COFs
hexavalent
triphenylene
knots
has
led
remarkable
rates.
Furthermore,
this
also
addresses
challenges
associated
with
practical
implementation
COFs,
including
stability
under
operational
conditions
necessity
reactor
designs.
future
prospects
sustainable
chemical
synthesis
are
discussed,
emphasizing
potential
revolutionize
through
green
methodologies.
aims
provide
valuable
insights
into
design
development
high-performance
photocatalysts,
paving
way
applications
value-added
chemicals.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 8, 2025
The
conversion
of
solar
energy
into
chemical
or
high-value
chemicals
has
attracted
considerable
research
interest
in
the
context
global
crisis.
Hydrogen
peroxide
(H2O2)
is
a
versatile
and
powerful
oxidizing
agent
widely
used
synthesis
medical
disinfection.
H2O2
also
serves
as
clean
source
fuel
cells,
generating
electricity
with
zero-carbon
emissions.
Recently,
sustainable
production
from
water
oxygen
using
covalent
organic
frameworks
(COFs)
photocatalysts
attention;
however,
systematic
studies
highlighting
role
linkages
determining
photocatalytic
performance
are
scarce.
Under
these
circumstances,
herein,
we
demonstrate
that
varying
imine
hydrazone
within
framework
significantly
influences
production.
COFs
high-density
linkages,
providing
optimal
docking
sites
for
oxygen,
enhance
generation
activity
(1588
μmol
g−1
h−1
pure
air),
leading
to
highly
efficient
solar-to-chemical
conversion.
This
work
systematically
investigates
effect
linkage
density
on
enhancement
hydrogen
generation,
aim
achieving
high-performance
photocatalysis.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: March 11, 2025
Photocatalysis
provides
a
sustainable
and
environment-friendly
strategy
to
produce
H2O2,
yet
the
catalytic
efficiency
of
H2O2
overall
photosynthesis
(O2
+
2H2O
→
2H2O2)
needs
be
further
improved,
especially
in
absence
additional
cocatalysts,
photosensitizers
sacrificial
agents.
Here
we
find
that
hydrogen-bonded
organic
frameworks
can
serve
as
photocatalysts
for
under
above-mentioned
conditions.
Specifically,
constructed
donor–acceptor
framework
exhibits
high
photocatalytic
activity
photosynthesis,
with
production
rate
681.2
μmol
g-1
h-1.
The
control
experiments
theoretical
calculation
revealed
structures
not
only
accelerate
charge
separation
transfer
but
also
optimize
reaction
pathways,
which
significantly
boosts
photosynthesis.
This
work
insights
into
design
development
efficient
A
series
were
developed
production.
These
materials
are
shown
facilitate
pathway
toward
H2O2.
