The
rational
design
of
p-n
heterojunction
is
highly
desirable
to
optimize
electron
distribution
and
photocarriers’
transfer
pathway
at
space-charge
region,
which
would
influence
the
fluorescence
detection.
Herein,
inorganic
perovskite
CsPbBr3
nanocrystals
(CPB
NCs)
encapsulated
into
Pb-centered
MOFs
via
simple
wet-chemical
self-sacrifice
construct
a
“turn-off”
sensor
for
sensitive
detection
NH3·H2O
or
Fe3+
in
aqueous
solution.
M-S,
UPS
DFT
calculation
have
proved
formation
junction
between
derived
parent
Pb-MOF.
CPB⊆Pb-MOF
has
provided
strong
platform
maintain
high
performance
stability
solution
as
sensor.
It
found
that
static
quenching
process
affected
Fe3+.
More
importantly,
occurrence
dynamic
with
also
verified
by
lifetime,
in-situ
XPS
analysis.
phase
taken
major
reason
when
being
introduced
NH3·H2O.
Fortunately,
0.4CPB⊆Pb-MOF
exhibited
best
analytical
What’s
more,
it
been
manufactured
visual
real
environmental
water
samples.
Thereby,
this
based
system
broaden
application
point-to-point
precise
diagnostics.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 18, 2024
Abstract
Although
metal‐organic
frameworks
(MOFs)
show
promise
as
electrocatalysts
due
to
their
unique
intrinsic
features,
activity
and
stability
often
fall
short.
Herein,
NiFe‐MOFs
is
used
a
model
introduce
group
VIB
metalates
(Na
2
WO
4
,
Na
CrO
MoO
)
into
the
topological
conversion
process
of
layer
double
hydroxide
(LDHs)/MOFs,
creating
series
interstitial
element‐doped
LDHs/MOFs
catalysts.
The
engage
in
alkaline
hydrolysis
MOF,
generating
LDHs
on
MOF
surface.
Furthermore,
altering
pH
value
reaction
environment
can
modify
catalysts'
morphology,
dopant/LDHs
content,
electronic
structure.
Consequently,
prepared
W‐doped
NiFe‐LDHs/MOFs
catalyst
displays
superior
catalytic
performance,
with
overpotentials
only
250
mV
at
500
mA
cm
−2
.
Moreover,
homemade
anion‐exchange
membrane
water
electrolysis
(AEMWE)
system
featuring
fabricated
electrocatalyst
anode
operate
stably
for
hours
1
A
exceptional
stem
from
optimized
intermediate
adsorption/desorption
behavior
nanostructure.
This
work
not
highlights
potential
catalysts
practical
applications
but
also
offers
new
design
approach
modulating
MOFs
using
an
strategy.
