Applied Physics Letters,
Год журнала:
2023,
Номер
122(20)
Опубликована: Май 15, 2023
Piezo-electrocatalysis
based
on
the
non-centrosymmetric
materials
opens
an
avenue
for
mechano-to-H2
production
through
harvesting
mechanical
energy,
being
undergoing
significant
growth.
Direct
comparison
of
performance
various
piezo-electrocatalysts
is
necessary
to
obtain
optimal
candidates
satisfying
demands
practical
application
but
remains
a
grand
challenge
because
acquiescently
added
sacrificial
agents
vary
considerably
in
literature.
Herein,
we
systematically
investigate
effect
four
commonly
used
types
containing
totally
15
piezo-electrocatalytic
hydrogen
evolution
by
choosing
typical
BaTiO3
catalyst
as
demo.
It
found
that
pH,
length
carbon
chain,
adsorption
strength
between
catalysts
and
agent,
combination
would
impact
H2
performance.
Moreover,
self-decomposition
agent-water
mixtures
under
ultrasonic
vibration,
implying
can
be
generated
without
piezo-electrocatalysts,
which
was
usually
ignored.
Thus,
this
work,
concept
net
yield
suggested
standardize
evaluation
future.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(13)
Опубликована: Фев. 10, 2024
Abstract
The
atomically
dispersed
metal
catalysts
with
full
atomic
utilization
and
well‐defined
site
structure
hold
great
promise
for
various
catalytic
reactions.
However,
the
single
metallic
limits
comprehensive
reaction
performance
in
most
Here,
we
demonstrated
a
photo‐induced
neighbour‐deposition
strategy
precise
synthesis
of
diatomic
Ir
1
Pd
on
In
2
O
3
applied
CO
hydrogenation
to
methanol.
proximity
synergism
between
sites
enabled
striking
promotion
both
conversion
(10.5
%)
methanol
selectivity
(97
good
stability
100
h
run.
It
resulted
record‐breaking
space‐time
yield
(187.1
g
MeOH
−1
hour
).
promotional
effect
mainly
originated
from
stronger
adsorption
assistance
H‐spillover
site,
thus
leading
lower
energy
barrier
*HCOO
pathway.
was
confirmed
that
this
synergistic
strongly
depended
dual‐site
distance
an
angstrom
scale,
which
attributed
weaker
*H
spillover
less
electron
transfer
as
Pd‐to‐Ir
increased.
average
evaluated
by
our
firstly
proposed
photoelectric
model.
Thus,
study
introduced
pioneering
precisely
synthesize
homonuclear/heteronuclear
facilitating
desired
route
via
catalysis.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
Achieving
efficient
and
sustainable
hydrogen
production
through
photocatalysis
is
highly
promising
yet
remains
a
significant
challenge,
especially
when
replacing
costly
noble
metals
with
more
abundant
alternatives.
Conversion
efficiency
noble-metal-free
alternatives
frequently
limited
by
high
charge
recombination
rates,
mainly
due
to
the
sluggish
transfer
inefficient
consumption
of
photo-generated
holes.
To
address
these
challenges,
rational
design
cocatalysts
as
oxidative
sites
reported
facilitate
hole
consumption,
leading
markedly
increased
H
Abstract
How
to
improve
the
stability
and
activity
of
metal‐organic
frameworks
is
an
attractive
but
challenging
task
in
energy
conversion
pollutant
degradation
framework
materials.
In
this
paper,
a
facile
method
developed
by
fabricating
titanium
dioxide
nanoparticles
(TiO
2
NPs)
layer
on
2D
copper
tetracarboxylphenyl‐metalloporphyrin
with
zinc
ions
as
linkers
(ZnTCuMT‐X,
“Zn”
represented
linkers,
first
“T”
(TCPP),
“Cu”
Cu
2+
coordinated
into
porphyrin
macrocycle,
“M”
frameworks,
second
TiO
NPs
layer,
“X”
added
volume
n‐tetrabutyl
titanate
(
X
=
100,
200,
300
or
400)).
It
found
that
optimized
ZnTCuMT‐200
showed
greatly
stably
enhanced
H
generation,
which
≈28.2
times
47.0
high
those
original
ZnTCuM
,
respectively.
Combined
results
free
radical
capture,
X‐ray
photoelectron
spectra
(XPS),
electron
spin
resonance
(ESR),
theoretical
calculation,
direct
Z‐scheme
transfer
mechanism
achieved
fully
explain
photocatalytic
performance.
demonstrates
facilely
designing
heterostructures
based
MOFs
modified
inorganic
semiconductor
can
be
advantageous
strategy
for
enhancing
hydrogen
evolution.
