ACS Applied Energy Materials,
Journal Year:
2024,
Volume and Issue:
8(1), P. 388 - 402
Published: Dec. 25, 2024
Artificial
photosynthesis
has
ignited
the
spark
for
significant
hydrogen
peroxide
(H2O2)
formation
owing
to
its
environmental
sustainability
and
cost-effectiveness;
however,
limited
light
absorption
potential
sluggish
charge
separation/migration
hinder
overall
photocatalytic
efficiency.
To
overcome
this,
a
heterostructure
of
point-to-face
S-scheme
heterojunction
integrated
with
surface
plasmon
resonance
(SPR)
effect
is
demonstrated
exhibit
high
performance.
Herein,
we
synthesized
zero-dimensional
Zn0.5Cd0.5Se
(ZCSe)
QDs
decorated
on
CuS
(CS)
nanosheets
through
two-step
pathway.
The
optimized
composite
CZ2
exhibited
H2O2
production
(PHPP)
rate
3.73
mmol
g–1
h–1
in
presence
ethanol
under
visible
light,
which
was
higher
than
that
shown
by
their
pristine
components,
0.14%
solar
chemical
conversion
efficiency
surpassed
majority
sulfide/selenide-based
photocatalysts.
Moreover,
optimum
exposed
para-nitrophenol
reduction
(PNP)
obtained
highest
81%
PNP
within
120
min.
photoluminescence,
Mott–Schottky
analysis,
XPS,
EPR,
quenching
experiments
led
better
understanding
mechanistic
detail
activity
construction
preserved
carriers
strong
redox
capacity
both
ZCSe
CS.
SPR
Cu
further
boosted
performances.
Furthermore,
loading
QD
CS
nanosheet
improved
affinity
H+
more
negative
zeta
potential,
promoted
oxygen
reaction
PHPP,
occurred
single
electron
pathway
facile
stability
up
five
cycles.
This
piece
work
sheds
development
multifunctional
photocatalysts
high-value
chemicals.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(49)
Published: Aug. 17, 2024
Abstract
Covalent
organic
frameworks
(COFs)
are
a
promising
class
of
polymers
with
the
merits
robust
framework,
ultrahigh
porosity,
and
molecularly
precise
backbones,
which
reveals
great
potential
for
solar‐to‐chemical
energy
conversion
in
context
mitigating
environmental
crises.
However,
photochemical
activities
individual
COFs
not
as
desired,
primarily
due
to
their
limited
light
absorption,
insufficient
dissociation
photogenerated
excitons
readily
recombined
carriers.
Recently,
COFs‐based
metal‐free
heterojunctions
synergistic
effects
provide
feasible
route
boost
photocatalytic
activity
more
environmentally
friendly
cost‐competitive
manners.
Herein,
it
is
first
systematically
overview
advances
from
heterojunction
types,
heterointerfaces
interactions,
primary
design
mechanisms.
Then,
typical
photocatalysts
(e.g.,
g‐C
3
N
4
‐COFs,
carbon
materials‐COFs,
polymer
semiconductor‐COFs,
COFs‐COFs
heterojunction)
summarized.
Finally,
challenges
long‐term
outlooks
future
offered
terms
efficiency,
yield,
stability,
cost
reaction
mechanisms,
well
standardized
evaluation
method
activities.
It
anticipated
that
this
review
can
deliver
new
insights
into
fundamental
engineering
conversion,
further
accelerate
development
area.
Small,
Journal Year:
2024,
Volume and Issue:
20(44)
Published: July 6, 2024
Abstract
Since
2020,
covalent
organic
frameworks
(COFs)
are
emerging
as
robust
catalysts
for
the
photosynthesis
of
hydrogen
peroxide
(H
2
O
),
benefiting
from
their
distinct
advantages.
However,
current
efficiency
H
production
and
solar‐to‐chemical
energy
conversion
(SCC)
remain
suboptimal
due
to
various
constraints
in
reaction
mechanism.
Therefore,
there
is
an
imperative
propose
improvement
strategies
accelerate
development
this
system.
This
comprehensive
review
delineates
recent
advances,
challenges,
utilizing
COFs
photocatalytic
production.
It
explores
fundamentals
challenges
(e.g.,
oxygen
(O
)
mass
transfer
rate,
adsorption
capacity,
response
sunlight,
electron‐hole
separation
efficiency,
charge
selectivity,
desorption)
associated
with
process,
well
advantages,
applications,
classification,
preparation
purpose.
Various
enhance
performance
highlighted.
The
aims
stimulate
further
advancements
discusses
potential
prospects,
application
areas
field.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(44)
Published: June 28, 2024
Abstract
Understanding
the
microenvironment
structure‐activity
relationship
of
singlet‐atom
catalysts
(SACs)
is
imperative
for
development
high‐performance
photocatalytic
devices.
However,
challenge
remains
to
finely
regulate
coordination
SACs.
Herein,
single‐atom
N
x
─Cu─O
4‐x
(
=
1–4)
photocatalysts
with
different
environments
are
successfully
prepared
based
on
pre‐design
reticular
supramolecular
covalent
organic
frameworks
(COFs)
direct
1
O
2
production
from
.
The
results
show
that
high
activity
Cu
SACs
closely
related
N,O‐coordination
microenvironment,
which
primarily
ascribed
electrophilicity
N,
atom.
electron
configuration
3‐
Cu‐O
endows
photocatalyst
enhanced
charge
transfer
capability
and
nearest
D‐band
center
Fermi
level.
“end‐on”
type
adsorption
at
3
active
site
can
promote
breaking
Cu─O
bonds
rather
than
O─O
bonds.
As
a
result,
‐Cu‐O
@COF
exhibits
most
optimal
formation
desorption
energies
intermediates
•OOH,
provides
an
advantageous
reaction
pathway
fewer
steps
lower
barrier
production.
This
work
highlights
long‐term
applications.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(30), P. 11972 - 11980
Published: Jan. 1, 2024
Leveraging
the
reversible
phenazine–dihydrophenazine
interconversion
in
microporous
polymers
enhances
photocatalytic
H
2
O
generation
by
improving
reduction
and
charge
separation,
showcasing
a
new
approach
for
solar-driven
chemical
conversion.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(30)
Published: May 17, 2024
Abstract
Organic
supermolecules
have
shown
great
promise
for
photocatalytic
hydrogen
peroxide
(H
2
O
)
production.
However,
the
limitation
of
intramolecular
charge
separation
efficiency
is
still
a
crucial
scientific
problem.
In
this
study,
novel
acceptor–donor–acceptor
(A–D–A)
type
naphthalenediimide
supramolecule
(SA‐NDI)
successfully
designed
overcoming
fundamental
issues
in
organic
supermolecule.
Composed
one
electron‐rich
core
(naphthalenediimide)
and
two
electron‐poor
units
(aminopyridine),
possesses
strong
transfer
ability.
Meanwhile,
SA‐NDI
has
an
obviously
stronger
internal
electric
field,
which
2.83
times
higher
than
that
D–A
supramolecule.
The
A–D–A
efficiently
accelerates
separation,
so
electron
quickly
migrates
to
acceptor
two‐electron
oxygen
reduction
reaction.
shows
excellent
H
accumulation
ability
(13.7
m
stable
cyclic
time
above
120
h.
catalyst
exhibits
superior
solar‐to‐chemical
conversion
1.03%
under
simulated
solar
irradiation.
This
work
provides
entirely
new
idea
design
with
efficient
monomer.
Journal of Metals Materials and Minerals,
Journal Year:
2025,
Volume and Issue:
35(1), P. e2216 - e2216
Published: Feb. 22, 2025
Elevating
the
selectivity
of
two-electron
oxygen
reduction
reaction
(2e‒
ORR)
is
challenging.
Herein,
hydroxyl
combined
with
nitrogen
on
biomass
carbon
exhibits
a
high
H2O2
over
wide
potential
range
0
V
to
0.5
vs.
RHE,
which
nearly
97%
at
0.3
RHE.
The
combination
and
improves
adsorption
desorption
intermediates,
finally
changing
pathway
promoting
2e‒
ORR.
Faradaic
efficiency
(FE)
reaches
98%
Furthermore,
typical
organic
pollutants
were
degraded
site
in
flow
cell.
This
work
illustrates
