Angewandte Chemie,
Год журнала:
2024,
Номер
136(11)
Опубликована: Янв. 22, 2024
Abstract
Metal‐organic
frameworks
(MOFs)
have
emerged
as
promising
oxygen
evolution
reaction
(OER)
electrocatalysts.
Chemically
bonded
MOFs
on
supports
are
desirable
yet
lacking
in
routine
synthesis,
they
may
allow
variable
structural
and
the
underlying
structure‐activity
relationship
to
be
disclosed.
Herein,
direct
MOF
synthesis
is
achieved
by
an
organic
acid‐etching
strategy
(AES).
Using
π‐conjugated
ferrocene
(Fc)
dicarboxylic
acid
etching
agent
ligand,
a
series
of
MFc‐MOF
(M=Ni,
Co,
Fe,
Zn)
nanosheets
synthesized
metal
supports.
The
crystal
structure
studied
using
X‐ray
diffraction
low‐dose
transmission
electron
microscopy,
which
quasi
‐lattice‐matched
with
that
metal,
enabling
situ
growth.
Operando
Raman
attenuated
total
reflectance
Fourier
transform
infrared
spectroscopy
disclose
NiFc‐MOF
features
dynamic
rebuilding
during
OER.
reconstructed
one
showing
optimized
electronic
structures
upshifted
d
‐band
center,
high
M−O
bonding
state
occupancy,
localized
electrons
adsorbates
indicated
density
functional
theory
calculations,
exhibits
outstanding
OER
performance
fairly
low
overpotential
(130
mV
at
10
mA
cm
−2
)
good
stability
(144
h).
newly
established
approach
for
reconstruction
disclosure
stimulate
development
more
prudent
catalysts
advancing
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(11)
Опубликована: Янв. 22, 2024
Abstract
Metal‐organic
frameworks
(MOFs)
have
emerged
as
promising
oxygen
evolution
reaction
(OER)
electrocatalysts.
Chemically
bonded
MOFs
on
supports
are
desirable
yet
lacking
in
routine
synthesis,
they
may
allow
variable
structural
and
the
underlying
structure‐activity
relationship
to
be
disclosed.
Herein,
direct
MOF
synthesis
is
achieved
by
an
organic
acid‐etching
strategy
(AES).
Using
π‐conjugated
ferrocene
(Fc)
dicarboxylic
acid
etching
agent
ligand,
a
series
of
MFc‐MOF
(M=Ni,
Co,
Fe,
Zn)
nanosheets
synthesized
metal
supports.
The
crystal
structure
studied
using
X‐ray
diffraction
low‐dose
transmission
electron
microscopy,
which
quasi
‐lattice‐matched
with
that
metal,
enabling
situ
growth.
Operando
Raman
attenuated
total
reflectance
Fourier
transform
infrared
spectroscopy
disclose
NiFc‐MOF
features
dynamic
rebuilding
during
OER.
reconstructed
one
showing
optimized
electronic
structures
upshifted
d
‐band
center,
high
M−O
bonding
state
occupancy,
localized
electrons
adsorbates
indicated
density
functional
theory
calculations,
exhibits
outstanding
OER
performance
fairly
low
overpotential
(130
mV
at
10
mA
cm
−2
)
good
stability
(144
h).
newly
established
approach
for
reconstruction
disclosure
stimulate
development
more
prudent
catalysts
advancing
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Авг. 23, 2024
The
oxygen
evolution
reaction
plays
a
vital
role
in
modern
energy
conversion
and
storage,
developing
cost-efficient
catalysts
with
industrially
relevant
activity
durability
is
highly
desired
but
still
challenging.
Here,
we
report
an
efficient
durable
FeNi
hydroxide
organic
framework
nanosheet
array
catalyst
that
competently
affords
long-term
at
industrial-grade
current
densities
alkaline
electrolyte.
desirable
high-intensity
performance
attributed
to
three
aspects
as
follows.
First,
two-dimensional
porous
arrays
maximum
specific
surface
facilitate
mass/charge
transfer
accommodate
high-current-density
catalysis.
Second,
situ
derived
motifs
offer
bimetallic
synergistic
catalysis
centers
high
intrinsic
activity.
Third,
carboxyl
ligands
alleviate
metal
oxidation
favorable
for
charge
tolerability
against
peroxidation
dissolution
under
strong
polarization.
As
result,
this
requires
overpotential
of
only
280
mV
deliver
density
up
1
A/cm2
long
over
1000
h.
Moreover,
water
electrolyzer
alternative
demonstrates
increased
economic
effectiveness
compared
commercial
levels
present.
Developing
crucial
various
technologies.
Here
the
authors
NiFe
Advanced Materials,
Год журнала:
2024,
Номер
36(31)
Опубликована: Май 23, 2024
Rationally
designed
defects
in
a
crystal
can
confer
unique
properties.
This
study
showcases
novel
dual-defects
engineering
strategy
to
tailor
the
electrochemical
response
of
metal-organic
framework
(MOF)
materials
used
for
energy
storage.
Salicylic
acid
(SA)
is
identified
as
an
effective
modulator
control
MOF-74
growth
and
induce
structural
defects,
cobalt
cation
doping
adopted
introducing
second
type
defect.
The
resulting
engineered
bimetallic
MOF
exhibits
discharging
capacity
218.6
mAh
g
Chemical Society Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
This
review
focuses
on
the
synthesis
and
characterization
of
defective
electrocatalysts,
internal
correlation
between
defects
catalytic
activity,
development
application
electrocatalysts
in
various
fields.
Abstract
Creating
specific
noble
metal/metal‐organic
framework
(MOF)
heterojunction
nanostructures
represents
an
effective
strategy
to
promote
water
electrolysis
but
remains
rather
challenging.
Herein,
a
electrocatalyst
is
developed
by
growing
Ir
nanoparticles
on
ultrathin
NiFe‐MOF
nanosheets
supported
nickel
foam
(NF)
via
readily
accessible
solvothermal
approach
and
subsequent
redox
strategy.
Because
of
the
electronic
interactions
between
nanosheets,
optimized
Ir@NiFe‐MOF/NF
catalyst
exhibits
exceptional
bifunctional
performance
for
hydrogen
evolution
reaction
(HER)
(
η
10
=
15
mV,
denotes
overpotential)
oxygen
(OER)
213
mV)
in
1.0
m
KOH
solution,
superior
commercial
recently
reported
electrocatalysts.
Density
functional
theory
calculations
are
used
further
investigate
shedding
light
mechanisms
behind
enhanced
HER
OER
performance.
This
work
details
promising
design
development
efficient
electrocatalysts
overall
splitting.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(29)
Опубликована: Май 5, 2024
Abstract
Electrocatalytic
glycerol
oxidation
reaction
(GOR)
stands
out
as
an
economical
and
prospective
technology
to
replace
oxygen
evolution
for
co‐producing
high‐valued
chemicals
hydrogen
(H
2
).
Regulating
the
adsorption
of
(GLY)
hydroxyl
(OH)
species
is
great
significance
improving
GOR
performance.
Herein,
a
hierarchical
p–n
heterojunction
by
combining
Co‐metal
organic
framework
(MOF)
nanosheets
with
CuO
nanorod
arrays
(CuO@Co‐MOF)
developed
realize
optimization
on
GOR.
Specifically,
CuO@Co‐MOF
electrode
exhibits
superior
performance
conversion
98.4%,
formic
acid
(FA)
selectivity
87.3%,
Faradaic
efficiency
(FE)
98.9%.
The
flow‐cell
system
bifunctional
pairing
(HER)
reveals
better
energy
efficiency.
Experimental
results
theoretical
calculations
unravel
redistributed
electric
field
introducing
Co‐containing
that
contribute
improved
performance,
which
not
only
enhances
OH
but
also
modulates
excessive
GLY
CuO,
thus
reducing
barriers
FA
desorption.
Simultaneously,
finite
element
analysis
novelty
structure
can
increase
concentration
−
facilitate
mass
transfer
in
solution.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 30, 2024
Abstract
Oxygen
electrocatalysis,
as
the
pivotal
circle
of
many
green
energy
technologies,
sets
off
a
worldwide
research
boom
in
full
swing,
while
its
large
kinetic
obstacles
require
remarkable
catalysts
to
break
through.
Here,
based
on
summarizing
reaction
mechanisms
and
situ
characterizations,
structure–activity
relationships
oxygen
electrocatalysts
are
emphatically
overviewed,
including
influence
geometric
morphology
chemical
structures
electrocatalytic
performances.
Subsequently,
experimental/theoretical
is
combined
with
device
applications
comprehensively
summarize
cutting‐edge
according
various
material
categories.
Finally,
future
challenges
forecasted
from
perspective
catalyst
development
applications,
favoring
researchers
promote
industrialization
electrocatalysis
at
an
early
date.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
Abstract
Defect‐engineering‐involved
metal‐organic
frameworks
(MOFs)
have
been
highly
valued
in
many
fields
due
to
the
enhanced
porosity
and
abundant
active
sites,
but
how
systematic
modulation
on
deficiency
influencing
fluorescent
sensing
performance
is
still
its
infancy.
Here,
defect‐engineering
of
MOF‐525
used
modulate
exposure
zirconium
(Zr)
clusters
sieving
capability
inner
channels,
enabling
precise
phosphoryl
fluoride
nerve
agents
with
specific
chemical
activity
molecular
dimensions.
Controllable
defects
transformed
localized
emission
porphyrin
into
ligand‐metal
charge
transferring
(LMCT)
gradual
loss
ligand
molecules,
which
interrupted
upon
coordination
agents,
triggering
a
red
turn‐on
fluorescence.
Thus,
defective
60%
effectively
discriminates
(e.g.,
sarin,
soman)
from
similar
substances
tabun,
venomous
agent
X)
synergistic
effect
dimension.
It
exhibits
sensitive
(0.96
n
m
/3.8
ppb),
rapid
(<1
s)
response
toward
target
robust
environmental
interference
acidic,
humid
common
substances.
This
work
enhances
understanding
MOFs
correpsonding
luminescent
behavior,
paving
new
avenue
for
strategy
trace
real
vapor.
Chemical Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 18, 2025
The
electrocatalytic
technique,
as
an
efficient
energy
storage
and
conversion
technology,
has
attracted
significant
attention
to
address
exhaustion
environmental
pollution.
Usually,
the
activity
selectivity
of
reactions
are
largely
dominated
by
dynamic
process
occurring
on
electrocatalysts.
Therefore,
high-performance
electrocatalysts,
which
can
dominate
pathway
barrier
reactions,
great
significance
for
advancement
technique.
Metal-organic
frameworks
(MOFs),
emerging
crystalline
porous
materials,
present
structural
component
advantages
including
well-defined
structure,
high
surface
area,
large
porosity,
diverse
components,
easy
tailorability,
demonstrating
fantastic
potential
precise
fabrication
In
this
Review,
strategies
in
electrocatalysts
based
MOF-related
materials
specifically
introduced
from
aspects
catalytic
site
design
microenvironment
modulation
around
sites.
Furthermore,
representative
progress
achieved
various
applications
employing
MOF-based
is
systematically
summarized,
with
special
emphasis
MOFs
performance
optimization.
Finally,
remaining
challenges
future
perspectives
further
highlighted.
