ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
17(1), P. 42 - 66
Published: Dec. 23, 2024
Hydrogen
peroxide
(H2O2)
finds
extensive
applications
in
various
industries,
particularly
the
environmental
field.
The
photocatalytic
production
of
H2O2
through
oxygen
reduction
reaction
(ORR)
or
water
oxidation
(WOR)
offers
a
promising
approach.
However,
several
challenges
hinder
effective
on-site
production,
such
as
rapid
electron–hole
pair
recombination,
inefficient
visible
light
utilization,
and
limited
selectivity
formation.
Thus,
developing
efficient
photocatalysts
to
overcome
these
is
crucial.
This
review
comprehensively
outlines
development
their
modification
techniques.
It
also
summarizes
compares
yield
apparent
quantum
among
with
without
use
organic
sacrificial
reagents.
Density
functional
theory
(DFT)
calculations
propose
band
structure
mechanisms
underlying
H2O2.
Finally,
this
explores
potential
photocatalytically
produced
guides
design
optimization
photocatalysts,
facilitating
continued
advancement
application
contexts.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(38)
Published: July 9, 2024
Abstract
Photocatalytic
oxygen
reduction
reaction
(ORR)
is
an
environmentally
friendly
and
cost‐effective
approach
for
H
2
O
synthesis.
However,
the
current
photosynthesis
system
suffers
from
sluggish
kinetics,
rapid
recombination
of
photoexcited
charge
carriers,
weak
redox
potentials,
resulting
in
unsatisfactory
solar‐to‐chemical
conversion
efficiency.
Herein,
a
Z‐scheme
heterojunction
(UiO/IKCN)
constructed
through
coupling
I
−
/K
+
co‐doped
g‐C
3
N
4
(IKCN)
with
NH
‐UiO‐66,
typical
metal‐organic
framework
material.
Under
visible
light
irradiation,
optimal
UiO/IKCN
exhibits
exceptional
production
rates
pure
water
(13.3
mM
g
−1
h
)
isopropanol
solution
(72.6
),
that
48.4
times
higher
than
pristine
CN
(1.5
).
A
high
apparent
quantum
yield
10.28%
at
420
nm
achieved
by
UiO/IKCN,
surpassing
most
previously
reported
values.
The
dominating
role
two‐electron
ORR
elucidated
detail.
significantly
enhanced
photocatalytic
activity
can
be
attributed
to
facilitated
separation
transfer,
which
are
unambiguously
verified
stable‐state
surface
photovoltage,
transient
photoluminescence,
femtosecond
absorption
spectroscopy,
in‐situ
irradiated
X‐ray
photoelectron
density
functional
theory
calculations.
This
study
represents
first
exploration
using
‐UiO‐66
provides
insights
into
rational
design
highly
efficient
photosynthesis.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 7, 2025
Abstract
Covalent
organic
frameworks
(COFs)
hold
great
promise
as
cathode
materials
for
lithium‐ion
batteries
(LIBs),
but
their
limited
conductivity
has
hindered
broader
application.
In
this
study,
a
novel
metallosalen
COF
(Cu‐TH‐COF)
is
introduced,
synthesized
via
one‐pot
method,
incorporating
redox‐active
Cu
ions
into
N
2
O
pockets
and
creating
an
extended
π‐d
conjugated
structure.
This
design
merges
inorganic
active
sites,
enabling
efficient
multi‐electron
transfer
improving
the
utilization
of
sites
in
LIBs.
The
conjugation
significantly
enhances
electronic
conductivity,
resulting
improved
rate
performance.
As
result,
Cu‐TH‐COF
delivers
impressive
discharge
capacity
300
mAh
g
−1
at
50
mA
retains
174
4000
,
outperforming
its
Cu‐free
counterpart.
study
demonstrates
first
time
potential
COFs
high‐performance
opens
up
new
strategy
next‐generation
ACS Catalysis,
Journal Year:
2025,
Volume and Issue:
unknown, P. 5694 - 5705
Published: March 24, 2025
Metal-loaded
COF-based
photocatalysts
facilitate
the
conversion
of
CO2
and
H2O
into
storable
fuels
through
a
photosynthesis-like
mechanism,
providing
an
efficient
approach
to
addressing
energy
challenges.
However,
fundamental
principles
governing
internal
transfer
reaction
pathways
remain
insufficiently
understood,
posing
significant
barriers
achieving
photocatalytic
reactions
with
high
selectivity
specificity.
This
study
explores
heavy-atom
effect
Pt
on
exciton-mediated
by
synthesizing
single-atom
dispersed
PtSA-CTF
nanoparticle-aggregated
PtNP-CTF
defective
CTF
substrates,
thereby
revealing
selective
preferences
species
their
impact
pathways.
By
combining
exciton
behavior
characterization
(fs-TA),
photoreaction
pathway
validation
(13CO2
isotope
labeling)
excited-state
theoretical
calculations
(TD-DFT),
it
was
demonstrated
that
excitons
in
undergo
resonance
intermediate
during
relaxation
process
from
triplet
state
ground
state.
The
*CO2
then
reacts
sequentially
generated
electrons
protons,
resulting
performance
CO
yield
6.778
mmol·g–1·h–1,
98.2%
selectivity,
TOF
1102.68
h–1.
work
provides
valuable
insights
photophysical
properties
induced
excitonic
effects,
offering
guidance
for
improving
efficiency
rational
design
advanced
photocatalysts.
