Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(19)
Published: Jan. 30, 2024
Abstract
The
integration
of
graphene
and
metal–organic
frameworks
(MOFs)
has
numerous
implications
across
various
domains,
but
fabricating
such
assemblies
is
often
complicated
time‐consuming.
Herein,
a
one‐step
preparation
graphene‐MOF
assembly
presented
by
directly
impregnating
vertical
(VG)
arrays
into
the
zeolitic
imidazolate
framework
(ZIF)
precursors
under
ambient
conditions.
This
approach
can
effectively
assemble
multiple
ZIFs,
including
ZIF‐7,
ZIF‐8,
ZIF‐67,
resulting
in
their
uniform
dispersion
on
VG
with
adjustable
sizes
shapes.
Hydrogen
defects
surface
are
critical
inducing
high‐efficiency
ZIF
assembly,
acting
as
reactive
sites
to
interact
facilitate
crystallisation.
versatility
VG‐ZIF‐67
further
demonstrated
exploring
process
MOF
amorphization.
Surprisingly,
this
leads
an
amorphous
thin‐film
coating
formed
(named
VG‐IL‐amZIF‐67),
which
preserves
short‐range
molecular
bonds
crystalline
ZIF‐67
while
sacrificing
long‐range
order.
Such
unique
film‐on‐graphene
architecture
maintains
essential
characteristics
functionalities
within
disordered
arrangement,
making
it
well‐suited
for
electrocatalysis.
In
electrochemical
oxygen
reduction,
VG‐IL‐amZIF‐67
exhibits
exceptional
activity,
selectivity,
stability
produce
H
2
O
acid
media.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(7), P. 3694 - 3812
Published: March 22, 2024
Electrocatalytic
water
splitting
driven
by
renewable
electricity
has
been
recognized
as
a
promising
approach
for
green
hydrogen
production.
Different
from
conventional
strategies
in
developing
electrocatalysts
the
two
half-reactions
of
(e.g.,
and
oxygen
evolution
reactions,
HER
OER)
separately,
there
growing
interest
designing
bifunctional
electrocatalysts,
which
are
able
to
catalyze
both
OER.
In
addition,
considering
high
overpotentials
required
OER
while
limited
value
produced
oxygen,
is
another
rapidly
exploring
alternative
oxidation
reactions
replace
hybrid
toward
energy-efficient
generation.
This
Review
begins
with
an
introduction
on
fundamental
aspects
splitting,
followed
thorough
discussion
various
physicochemical
characterization
techniques
that
frequently
employed
probing
active
sites,
emphasis
reconstruction
during
redox
electrolysis.
The
design,
synthesis,
performance
diverse
based
noble
metals,
nonprecious
metal-free
nanocarbons,
overall
acidic
alkaline
electrolytes,
thoroughly
summarized
compared.
Next,
their
application
also
presented,
wherein
anodic
include
sacrificing
agents
oxidation,
pollutants
oxidative
degradation,
organics
upgrading.
Finally,
concise
statement
current
challenges
future
opportunities
presented
hope
guiding
endeavors
quest
sustainable
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
62(9)
Published: Dec. 5, 2022
Abstract
Transition
metal
complexes
are
well‐known
homogeneous
electrocatalysts.
In
this
regard,
metal–organic
frameworks
(MOFs)
can
be
considered
as
an
ensemble
of
transition
ordered
in
a
periodic
arrangement.
addition,
MOFs
have
several
additional
positive
structural
features
that
make
them
suitable
for
electrocatalysis,
including
large
surface
area,
high
porosity,
and
content
accessible
with
exchangeable
coordination
positions.
The
present
review
describes
the
current
state
use
electrocatalysts,
both
host
electroactive
guests
their
direct
electrocatalytic
activity,
particularly
case
bimetallic
MOFs.
field
MOF‐derived
materials
is
purposely
not
covered,
focusing
on
or
its
composites
Special
attention
has
been
paid
to
strategies
overcome
poor
electrical
conductivity
limited
stability.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(21)
Published: March 7, 2023
Nickel-iron
catalysts
represent
an
appealing
platform
for
electrocatalytic
oxygen
evolution
reaction
(OER)
in
alkaline
media
because
of
their
high
adjustability
components
and
activity.
However,
long-term
stabilities
under
current
density
still
remain
unsatisfactory
due
to
undesirable
Fe
segregation.
Herein,
a
nitrate
ion
(NO3-
)
tailored
strategy
is
developed
mitigate
segregation,
thereby
improve
the
OER
stability
nickel-iron
catalyst.
X-ray
absorption
spectroscopy
combined
with
theoretical
calculations
indicate
that
introducing
Ni3
(NO3
)2
(OH)4
stable
NO3-
lattice
conducive
constructing
interface
FeOOH/Ni3
via
strong
interaction
between
incorporated
.
Time
flight
secondary
mass
spectrometry
wavelet
transformation
analysis
demonstrate
catalyst
greatly
alleviates
exhibiting
considerably
enhanced
six-fold
improvement
over
FeOOH/Ni(OH)2
without
modification.
This
work
represents
momentous
step
toward
regulating
segregation
stabilizing
catalytic
performances
catalysts.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(23)
Published: March 29, 2023
Various
metal
ions
with
different
valence
states
(Mg2+
,
Al3+
Ca2+
Ti4+
Mn2+
Fe3+
Ni2+
Zn2+
Pb2+
Ba2+
Ce4+
)
are
successfully
confined
in
quasi-microcube
shaped
cobalt
benzimidazole
frameworks
using
a
space-confined
synthesis
strategy.
More
importantly,
series
of
derived
carbon
materials
that
confine
obtained
by
high-temperature
pyrolysis.
Interestingly,
the
exhibited
electric
double-layer
and
pseudocapacitance
properties
because
presence
various
states.
Moreover,
additional
within
may
create
new
phases,
which
can
accelerate
Na+
insertion/extraction
thus
increase
electrochemical
adsorption.
Density
functional
theory
results
showed
Ti
exhibit
enhanced
resulting
from
characteristic
anatase
crystalline
phases
TiO2
.
The
Ti-containing
have
an
impressive
desalination
capacity
(62.8
mg
g-1
capacitive
deionization
(CDI)
applications
high
cycling
stability.
This
work
provides
facile
synthetic
strategy
for
confinement
metal-organic
supports
further
development
seawater
CDI.
Small,
Journal Year:
2023,
Volume and Issue:
19(15)
Published: Jan. 5, 2023
Hydrogen,
a
clean
and
flexible
energy
carrier,
can
be
efficiently
produced
by
electrocatalytic
water
splitting.
To
accelerate
the
sluggish
hydrogen
evolution
reaction
oxygen
kinetics
in
splitting
process,
highly
active
electrocatalysts
are
essential
for
lowering
barriers,
thereby
improving
efficiency
of
overall
Combining
distinctive
advantages
metal-organic
frameworks
(MOFs)
with
physicochemical
properties
2D
materials
such
as
large
surface
area,
tunable
structure,
accessible
sites,
enhanced
conductivity,
MOFs
have
attracted
intensive
attention
field
electrocatalysis.
Different
strategies,
conductivities
MOFs,
reducing
thicknesses
MOF
nanosheets,
integrating
conductive
particles
or
substrates,
developed
to
promote
catalytic
performances
pristine
MOFs.
This
review
summarizes
recent
advances
MOF-based
electrolysis.
In
particular,
their
intrinsic
detailly
analyzed
reveal
important
roles
inherent
centers,
other
situ
generated
phases
from
responsible
reactions.
Finally,
challenges
development
prospects
future
applications
discussed.
Small Methods,
Journal Year:
2022,
Volume and Issue:
6(10)
Published: Sept. 1, 2022
Abstract
Oxygen
evolution
reaction
(OER)
is
an
energy‐determined
half‐reaction
for
water
splitting
and
many
other
energy
conversion
processes,
such
as
rechargeable
metal–air
batteries
CO
2
reduction,
due
to
its
four‐electron
sluggish
process.
To
reduce
the
consumption
cost
of
these
advanced
technologies,
various
transition
metal‐based
nanomaterials,
like
metal
oxides/hydroxides,
nitride,
phosphide
are
synthesized.
Among
these,
metal–organic
framework
(MOF)‐based
materials
considered
ideal
candidate
fabrication
efficient
OER
electrocatalysts
owing
their
unique
physicochemical
properties.
In
this
review,
fundamental
catalytic
mechanisms
key
evaluation
parameters
in
acidic
alkaline
media
presented
first.
Then,
design
strategies
MOF‐based
catalysts
research
progress
study
structure–performance
relationship
summarized.
Subsequently,
recent
advances
alkaline,
acidic,
neutral
electrolytes
overviewed.
Finally,
current
challenges
future
opportunities
provided
under
frame
design,
theoretical
understanding,
characterization
techniques,
industrial
applications.
