The
rational
design
of
p-n
heterojunction
was
highly
desirable
to
optimize
charge
distribution
at
space-charge
region,
tailoring
the
adsorption
free
energy
intermediate
matters,
and
boost
oxygen
evolution
reaction
(OER)
in
situ
electro-Fenton
(EF)
reaction.
Herein,
a
self-sacrificing
strategy
has
been
employed
construct
NiFe-MOF⊆LDH
nanosheet
arrays
on
carbon
cloth
(CC),
directly
using
NiFe-LDH
as
template.
exhibited
outperformed
OER
activity
with
lower
overpotential
196
mV
smaller
Tafel
slope
48
dec-1(η10).
conferred
higher
valence
state
for
Ni3+
more
carrier
density
absorb
OH-
ions
confirmed
by
in-situ
Raman
functional
theory
calculation
(DFT)
endowed
excellent
activity,
which
expected
endow
self-oxygenation
support
following
EF
this
system
without
additional
O2.
An
electrochemical
flow
reactor
designed
anodic
cathodic
only
low
voltage
1.6V.
Typically,
it
accessed
2e-
ORR
process
H2O2
yield
rate
up
27.4
mmol/h
O2,
generated
further
activated
Fe2+/Fe3+
cycling
heterogeneous
EF.
This
tandem
could
remove
96%
ibuprofen
(IBF)
within
120
min
long
term
cycle
use.
In
word,
coupling
possible
application
fields
sustainable
environmental
remediation.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 18, 2024
Abstract
Local
electron
density
manipulation
can
optimize
the
adsorption
and
desorption
nature
of
catalysts
leading
to
enhanced
catalytic
activity
for
water
oxidation.
Construction
a
Mott–Schottky
barrier
allows
transition
in
because
their
different
Fermi
levels.
Herein,
Pt@NiFc‐MOF
heterojunction
is
constructed,
which
electrons
are
transferred
from
NiFc‐MOF
Pt
as
triggered
by
formed
built‐in
electric
field
at
interface.
The
as‐prepared
reveals
exceptional
performance
toward
hydrazine
oxidation
reaction
(HzOR),
hydrogen
evolution
(HER),
overall
splitting
(OHzS)
ampere‐level
current
densities.
advanced
configured
also
be
further
evidenced
concept
direct
liquid
N
2
H
4
/H
O
fuel
cell
(Pt@NiFc‐MOF//Pt
Net),
yielding
maximum
power
415.2
mW
cm
‒2
80°C
work
stably
190
h
500
mA
(at
25°C).
One
more
function
clarified
well,
that
it
purify
hydrazine‐rich
wastewater
718
6
ppb
(less
than
U.S.
Environmental
Protection
Agency
10
ppb)
120
min
.
This
represents
breakthrough
interface
engineering
metal–organic
frameworks
(MOFs)
industry‐level
generation
its
beyond.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 26, 2025
Abstract
Polymer‐intercalated
metal
oxides
have
attracted
considerable
attention
for
ammonium
ions
(NH
4
+
)
storage
due
to
their
enhanced
interlayer
space,
which,
through
the
pillar
effect,
facilitates
rapid
and
efficient
transport
of
NH
.
However,
understanding
remains
limited
regarding
how
polymer
intercalants
affect
intrinsic
structure
host
materials,
especially
variations
in
atomic
orbital
electronic
structural
induced
by
intercalants.
Herein,
a
polyaniline‐intercalated
vanadium
oxide
(P‐VO
x
is
developed
and,
first
time,
its
behavior
validated
as
an
anode
material.
Using
various
spectroscopy
techniques
combined
with
theoretical
simulation,
changes
are
analyzed
intercalant.
Spectroscopy
studies
reveal
that
insertion
polyaniline
optimizes
V
2
O
5
,
promoting
transition
electrons
3d
xy
state
increasing
occupation
t
2g
orbital,
thereby
enhancing
electrical
conductivity.
Computational
results
confirm
P‐VO
lowers
migration
barrier,
electron/NH
transfer.
As
result,
electrode
demonstrates
outstanding
capacity
unprecedented
long‐term
cycling
stability.
This
study
provides
new
insights
into
intercalant
underscores
advantages
polymer‐intercalated
VO
high‐performance
storage.
Small,
Journal Year:
2024,
Volume and Issue:
20(43)
Published: June 25, 2024
Abstract
The
development
of
highly
efficient
urea
oxidation
reaction
(UOR)
electrocatalysts
is
the
key
to
simultaneously
achieving
green
hydrogen
production
and
treatment
urea‐containing
wastewater.
Ni‐based
are
expected
replace
precious
metal
catalysts
for
UOR
because
their
high
activity
low
cost.
However,
construction
that
can
synergistically
enhance
still
needs
further
in‐depth
study.
In
this
study,
active
NiFe(OH)
x
/MnO
2
p‐p
heterostructures
constructed
on
nickel
foam
(NF)
by
electrodeposition
(NiFe(OH)
/NF),
illustrating
effect
electronic
structure
changes
at
heterogeneous
interfaces
revealing
catalytic
mechanism
UOR.
/NF
only
1.364
V
(vs
Reversible
Hydrogen
Electrode,
RHE)
reach
10
mA
cm
−2
Structural
characterizations
theoretical
calculations
indicate
energy
gap
leads
directed
charge
transfer
redistribution
heterojunction
interface,
forming
electron‐rich
(MnO
)
electron‐poor
regions.
This
enhances
catalyst's
adsorption
intermediates,
reduces
thermodynamic
barriers
during
process,
promotes
formation
Ni
3+
phases
lower
potentials,
thus
improves
performance.
work
provides
a
new
idea
high‐efficiency
electrocatalysts.
