Small,
Journal Year:
2024,
Volume and Issue:
20(31)
Published: March 3, 2024
The
rational
design
of
heterogeneous
catalysts
is
crucial
for
achieving
optimal
physicochemical
properties
and
high
electrochemical
activity.
However,
the
development
new
amorphous-crystalline
heterostructures
significantly
more
challenging
than
that
existing
crystalline-crystalline
heterostructures.
To
overcome
these
issues,
a
coordination-assisted
strategy
can
help
fabricate
an
amorphous
NiO/crystalline
NiCeO
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(26)
Published: April 13, 2023
Efficient
bifunctional
electrocatalysts
for
hydrogen
and
oxygen
evolution
reactions
are
key
to
water
electrolysis.
Herein,
we
report
a
built-in
electric
field
(BEF)
strategy
fabricate
heterogeneous
nickel
phosphide-cobalt
nanowire
arrays
grown
on
carbon
fiber
paper
(Ni2
P-CoCH/CFP)
with
large
work
function
difference
(ΔΦ)
as
overall
splitting.
Impressively,
Ni2
P-CoCH/CFP
exhibits
remarkable
catalytic
activity
obtain
10
mA
cm-2
,
respectively.
Moreover,
the
assembled
lab-scale
electrolyzer
driven
by
an
AAA
battery
delivers
excellent
stability
after
50
h
electrocatalysis
100
%
faradic
efficiency.
Computational
calculations
combining
experiments
reveal
interface-induced
effect
facilitates
asymmetrical
charge
distributions,
thereby
regulating
adsorption/desorption
of
intermediates
during
reactions.
This
offers
avenue
rationally
design
high-performance
electrocatalysts.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(17)
Published: March 2, 2023
The
construction
of
high-activity
and
low-cost
electrocatalysts
is
critical
for
efficient
hydrogen
production
by
water
electrolysis.
Herein,
we
developed
an
advanced
electrocatalyst
anchoring
well-dispersed
Ir
nanoparticles
on
nickel
metal-organic
framework
(MOF)
Ni-NDC
(NDC:
2,6-naphthalenedicarboxylic)
nanosheets.
Benefiting
from
the
strong
synergy
between
MOF
through
interfacial
Ni-O-Ir
bonds,
synthesized
Ir@Ni-NDC
showed
exceptional
electrocatalytic
performance
evolution
reaction
(HER),
oxygen
(OER)
overall
splitting
in
a
wide
pH
range,
superior
to
commercial
benchmarks
most
reported
electrocatalysts.
Theoretical
calculations
revealed
that
charge
redistribution
bridge
induced
optimization
H2
O,
OH*
H*
adsorption,
thus
leading
accelerated
electrochemical
kinetics
HER
OER.
This
work
provides
new
clue
exploit
bifunctional
pH-universal
splitting.
Small Methods,
Journal Year:
2022,
Volume and Issue:
7(1)
Published: Dec. 1, 2022
Abstract
Metal–organic
frameworks
(MOFs)
represent
a
novel
class
of
crystalline
inorganic–organic
hybrid
materials
with
tunable
semiconducting
behavior.
MOFs
have
potential
for
application
in
photocatalysis
to
produce
sustainable
solar
fuels,
owing
their
unique
structural
advantages
(such
as
clarity
and
modifiability)
that
can
facilitate
deeper
understanding
the
structure–activity
relationship
photocatalysis.
This
review
takes
photocatalytic
active
sites
particular
perspective,
summarizing
progress
MOF‐based
fuel
production;
mainly
including
three
categories
solar‐chemical
conversions,
water
splitting
hydrogen
fuel,
carbon
dioxide
reduction
hydrocarbon
nitrogen
fixation
high‐energy
carriers
such
ammonia.
focuses
on
types
photocatalysts
discusses
enhanced
activity
based
well‐defined
structure
MOFs,
offering
deep
insights
into
Deleted Journal,
Journal Year:
2023,
Volume and Issue:
2, P. e9120056 - e9120056
Published: Feb. 25, 2023
Iridium
(Ir)-based
catalysts
are
highly
efficient
for
the
anodic
oxygen
evolution
reaction
(OER)
due
to
high
stability
and
anti-corrosion
ability
in
strong
acid
electrolyte.
Recently,
intensive
attention
has
been
directed
novel,
efficient,
low-cost
Ir-based
overcome
challenges
of
their
application
water
electrolysis
technique.
To
make
a
comprehensive
understanding
recently
developed
catalytic
properties,
mechanism
promotion
principles
were
discussed
OER
condition
aimed
proton
exchange
membrane
electrolyzer
(PEMWE)
this
review.
The
mechanisms
adsorbate
lattice
first
presented
easy
mechanism;
brief
perspective
analysis
from
aspects
geometric
effect,
electronic
synergistic
defect
engineering,
support
effect
was
concluded.
Then,
latest
progress
practical
introduced
detail,
which
classified
into
varied
composition
Ir
catalyst
terms
alloys,
hetero-element
doping,
perovskite,
pyrochlore,
heterostructure,
core–shell
structure,
supported
catalysts.
Finally,
problems
faced
by
current
acidic
electrolyte
put
forward.
It
is
concluded
that
with
low
loading
should
be
future,
paid
probing
structural
performance
correlation,
real
PEMWE
devices.Hopefully,
effort
can
helpful
catalysis
OER,
instructive
novel
design
fabrication.
Angewandte Chemie,
Journal Year:
2023,
Volume and Issue:
135(26)
Published: April 13, 2023
Abstract
Efficient
bifunctional
electrocatalysts
for
hydrogen
and
oxygen
evolution
reactions
are
key
to
water
electrolysis.
Herein,
we
report
a
built‐in
electric
field
(BEF)
strategy
fabricate
heterogeneous
nickel
phosphide‐cobalt
nanowire
arrays
grown
on
carbon
fiber
paper
(Ni
2
P‐CoCH/CFP)
with
large
work
function
difference
(ΔΦ)
as
overall
splitting.
Impressively,
Ni
P‐CoCH/CFP
exhibits
remarkable
catalytic
activity
obtain
10
mA
cm
−2
,
respectively.
Moreover,
the
assembled
lab‐scale
electrolyzer
driven
by
an
AAA
battery
delivers
excellent
stability
after
50
h
electrocatalysis
100
%
faradic
efficiency.
Computational
calculations
combining
experiments
reveal
interface‐induced
effect
facilitates
asymmetrical
charge
distributions,
thereby
regulating
adsorption/desorption
of
intermediates
during
reactions.
This
offers
avenue
rationally
design
high‐performance
electrocatalysts.
Journal of Taibah University for Science,
Journal Year:
2023,
Volume and Issue:
17(1)
Published: Feb. 20, 2023
Excessive
use
of
fossil
fuels
has
caused
their
rapid
depletion,
resulting
in
a
growing
energy
crisis
as
well
many
environmental
concerns,
and
prompting
the
development
sustainable
conversion
system.
In
this
study,
we
report
GO
based
SnSe
nanomaterial
incorporated
via
hydrothermal
route
engaging
OER
activity.
The
morphological,
structural
textual
effects
material
have
been
measured
with
scanning
electron
microscopy
(SEM),
X-ray
diffraction
(XRD)
Brunauer
Emmett
Teller
(BET).
Furthermore,
kinetic
process,
active
sites,
conductivity
stability
electrode
medium
GO,
GO/SnSe
were
estimated
electrochemical
impedance
spectroscopy
(EIS),
linear
sweep
voltammetry
(LSV),
surface
area
(ECSA)
chronoamperometry
under
1.0
M
KOH
Ni
foam
conductive
substrate.
Its
results
depicted
following:
nanocomposite
displayed
lesser
overpotential
around
336
mV
to
reach
current
density
10
mA
cm−2
Tafel
slope
36
dec−1.
Cyclic
analysis
show
over
35
h.
exceptional
properties
differentiate
it
good
for
electrical
other
fields
future.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(34)
Published: March 13, 2024
Abstract
The
proton
exchange
membrane
water
electrolysis
system
has
long
been
considered
a
promising
technique
for
the
generation
of
hydrogen
owing
to
its
high
electrolytic
efficiency,
reliability,
and
quick
response
renewable
energy
sources.
At
present,
noble
metals
their
oxides
(e.g.,
Pt,
IrO
2
,
RuO
)
are
widely
used
as
active
electrocatalysts
accelerating
conversion
efficiency
process,
especially
in
acidic
media.
Nevertheless,
scarcity
instability
seriously
impede
large‐scale
application
practice.
In
past
years,
metal‐organic
frameworks
(MOFs)
have
proven
be
an
ideal
platform
designing
efficient
cost‐effective
electrodes
due
unique
physicochemical
properties.
this
review,
fundamental
catalytic
mechanisms
evolution
reaction
(HER)
oxygen
(OER)
media
discussed
first.
Then,
design
strategies
advanced
characterizations
MOF‐based
water‐splitting
catalysts
summarized.
Finally,
recent
research
advances
HER
OER
electrolytes,
along
with
current
challenges
future
opportunities,
provided.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(25)
Published: March 4, 2023
Abstract
Designing
efficient
electrocatalysts
based
on
metal–organic
framework
(MOF)
nanosheet
arrays
(MOFNAs)
with
controlled
active
heterointerface
for
the
oxygen
evolution
reaction
(OER)
is
greatly
desired
yet
challenging.
Herein,
a
facile
strategy
synthesis
of
MOF‐based
(γ‐FeOOH/Ni‐MOFNA)
developed
abundant
heterointerfaces
between
Ni‐MOF
and
γ‐FeOOH
nanosheets
by
introducing
linker
defects
to
former.
The
experimental
theoretical
results
show
key
role
in
inducing
growth
secondary
onto
surface
Ni‐MOFNAs,
which
further
leads
formation
interfacial
Ni/Fe
dual
sites
high
activity.
Notably,
resulting
γ‐FeOOH/Ni‐MOFNA
exhibits
excellent
OER
performance
low
overpotentials
193
222
mV
at
10
100
mA
cm
−2
,
respectively.
Furthermore,
study
structure–performance
relationship
heterostructures
reveals
that
Ni
interface
have
higher
activity
than
those
NiFe
layered
double
hydroxide
Ni‐MOFNA.
This
provides
new
prospect
heterostructured
highly
enhanced
OER.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(31)
Published: Aug. 27, 2023
Limited
by
preparation
time
and
ligand
solubility,
synthetic
protocols
for
cyclodextrin-based
metal-organic
framework
(CD-MOF),
as
well
subsequent
derived
materials
with
improved
stability
properties,
still
remains
a
challenge.
Herein,
an
ultrafast,
environmentally
friendly,
cost-effective
microwave
method
is
proposed,
which
induced
graphene
oxide
(GO)
to
design
CD-MOF/GOs.
This
applicable
technique
can
control
the
crystal
size
of
CD-MOFs
from
macro-
nanocrystals.
CD-MOF/GOs
are
investigated
new
type
supramolecular
adsorbent.
It
selectively
adsorb
dye
molecule
methylene
green
(MG)
owing
synergistic
effect
between
hydrophobic
nanocavity
CDs,
abundant
O-containing
functional
groups
GO
in
composites.
Following
high
temperature
calcination,
resulting
N,
S
co-doped
porous
carbons
exhibit
capacitance
501
F
g-1
at
0.5
A
,
stable
cycling
90.1%
capacity
retention
after
5000
cycles.
The
carbon
exhibits
good
electrochemical
performance
due
its
surface
containing
numerous
electrochemically
active
sites
adsorption
carbonization.
strategy
incorporating
variety
molecules
into
optimizes
properties
their
materials,
furthering
development
toward
fabrication
zeitgeisty
high-performance
energy
storage
devices.
