Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 20, 2024
Abstract
Solar
hydrogen
production
with
semiconductor
photocatalyst
particles
typically
requires
co‐catalysts,
but
since
co‐catalysts
are
often
deposited
in
situ,
the
rate
of
their
nucleation/growth
and
role
parasitic
light
absorption
not
well
controlled.
Herein
a
halted
photodeposition‐dialysis
method
is
introduced
that
affords
unprecedented
control
over
platinum
(Pt)
co‐catalyst
loading
morphology
on
bulk
heterojunction
organic
nanoparticles.
Pt
surface
distribution
controlled
by
tuning
initial
precursor
concentration
photodeposition
time
followed
removal
unreacted
via
dialysis.
Applying
this
typical
deposition
conditions
gives
max
H
2
evolution
140
mmol
h
−1
g
(based
mass)
only
15.2
wt.%
suggests
an
optimum
<20
Pt,
above
which
decreases
rate.
Moreover,
peak
>30
achieved
1.01
to
favor
more
uniform
coverage
small
clusters
single
atoms
larger
NPs.
This
represents
performance
than
eight
times
higher
compared
photodepositions
Pt)
critical
insights
into
optimizing
performance.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(19), С. 6275 - 6306
Опубликована: Янв. 1, 2024
We
summarize
the
different
synthetic
strategies
of
MOF-derived
micro-/nano-materials
to
date,
including
but
not
limited
calcining,
phosphating,
sulfurization,
selenylation
method,
ion
exchange,
and
etching
strategies.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 13, 2025
Abstract
Developing
organic
semiconductor
photocatalysts
with
alterable
optical
properties
and
excitonic
behaviors
for
photocatalytic
hydrogen
evolution
has
received
significant
attention
recently.
Herein,
three
polymerized
small‐molecule
acceptors
(PSMAs)
different
linker
lengths,
namely
PY‐1T,
PY‐2T
PY‐3T,
are
designed
synthesized
to
construct
nano‐photocatalysts.
In
comparison
YDT,
these
PSMAs
exhibit
broader
absorption
in
both
visible
near‐infrared
(NIR)
light
region
as
well
enlarged
exciton
diffusion
length.
the
meanwhile,
intramolecular
charge
transfer
separation
is
promoted
by
varying
length,
leading
enhanced
harvesting
utilization.
As
a
result,
single‐component
nano‐photocatalyst
based
on
PY‐3T
achieves
an
impressive
average
rate
(HER)
of
400.3
mmol
h
−1
g
under
AM
1.5G
sunlight
(100
mW
cm
−2
),
which
≈48
times
greater
than
that
YDT
NPs
(8.3
).
These
results
not
only
prove
potential
developing
extended
chain
length
efficient
photocatalysts,
but
also
elucidate
importance
regulating
designing
high‐performance
photocatalysts.
Due
to
the
severe
recombination
of
charge
carriers,
photocatalytic
activity
covalent
organic
frameworks
(COFs)
materials
is
limited.
Herein,
through
simple
ultrasound
and
stirring
processes,
Pd
metallene
(Pde)
successfully
combined
with
2D
COFs
form
Pde/TpPa-1-COF
(Pde/TPC)
composites.
Obviously,
a
strong
internal
electric
field
(IEF)
formed
in
Pde/TPC
hybrid
materials,
which
significantly
boosts
separation
photogenerated
charges.
In
addition,
matched
structure
two
can
also
lead
electronic
coupling
effects,
plentiful
active
sites,
shortened
carrier
migration
paths.
Thus,
own
extraordinary
ability
longer
carriers
lifetime
(3.3
ns
for
2.7
TPC),
be
proved
series
photoelectrochemical
spectroscopic
tests.
Benefiting
from
formation
IEF
structure,
8%
demonstrates
highest
H
