Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
12(5), С. 2887 - 2901
Опубликована: Дек. 20, 2023
A
new
high-performance
ternary
LDH
supercapacitor
with
excellent
electrochemical
performance
is
fabricated
by
using
cation
modulation
and
sodium
dodecyl
sulfonate
intercalation.
Abstract
Transition‐metal‐based
layered
double
hydroxides
(TM‐LDHs)
nanosheets
are
promising
electrocatalysts
in
the
renewable
electrochemical
energy
conversion
system,
which
regarded
as
alternatives
to
noble
metal‐based
materials.
In
this
review,
recent
advances
on
effective
and
facile
strategies
rationally
design
TM‐LDHs
electrocatalysts,
such
increasing
number
of
active
sties,
improving
utilization
sites
(atomic‐scale
catalysts),
modulating
electron
configurations,
controlling
lattice
facets,
summarized
compared.
Then,
these
fabricated
for
oxygen
evolution
reaction,
hydrogen
urea
oxidation
nitrogen
reduction
small
molecule
oxidations,
biomass
derivatives
upgrading
is
articulated
through
systematically
discussing
corresponding
fundamental
principles
reaction
mechanism.
Finally,
existing
challenges
density
catalytically
future
prospects
nanosheets‐based
each
application
also
commented.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(18)
Опубликована: Янв. 21, 2024
Abstract
Urea
oxidation
reaction
(UOR)
has
garnered
significant
attention
in
recent
years
as
a
promising
and
sustainable
clean‐energy
technology.
Urea‐containing
wastewater
poses
severe
threats
to
the
environment
human
health.
Numerous
studies
hence
focus
on
developing
UOR
viable
process
for
simultaneously
remediating
converting
it
into
energy.
Moreover,
UOR,
which
thermodynamic
potential
of
0.37
V
(vs
reversible
hydrogen
electrode,
RHE),
shows
great
promise
replacing
energy‐intensive
oxygen
evolution
(OER;
1.23
vs
RHE).
The
versatility
stability
urea,
particularly
at
ambient
temperatures,
make
an
attractive
alternative
fuel
cells.
Since
entails
complex
intermediate
adsorption/desorption
process,
many
are
devoted
designing
cost‐effective
efficient
catalysts.
Notably,
transition
metal‐based
materials
with
regulated
d
orbitals
have
demonstrated
process.
However,
comprehensive
reviews
focusing
catalysts
remain
scarce.
In
light
this,
review
aims
bridge
gap
by
offering
in‐depth
systematic
overview
cutting‐edge
design
strategies
their
diverse
applications
UOR.
Additionally,
delves
status
quo
future
directions,
charting
course
further
advancements
this
exciting
field.
Abstract
Water‐splitting
reactions
such
as
the
hydrogen
evolution
reaction
(HER)
and
oxygen
(OER)
typically
require
expensive
noble
metal‐based
electrocatalysts.
This
has
motivated
researchers
to
develop
novel,
cost‐effective
electrocatalytic
systems.
In
this
study,
a
new
multicomponent
nanocomposite
was
assembled
by
combining
functionalized
multiwalled
carbon
nanotubes,
Cu‐based
metal–organic
framework
(MOF)
(HKUST‐1
or
HK),
sulfidized
NiMn‐layered
double
hydroxide
(NiMn‐S).
The
resulting
nanocomposite,
abbreviated
MW/HK/NiMn‐S,
features
unique
architecture,
high
porosity,
numerous
electroactive
Cu/Ni/Mn
sites,
fast
charge
transfer,
excellent
structural
stability,
conductivity.
At
current
density
of
10
mA
cm
−2
,
dual‐function
electrocatalyst
shows
remarkable
performance,
with
ultralow
overpotential
values
163
mV
73
(HER),
well
low
Tafel
slopes
(57
75
dec
−1
respectively).
Additionally,
its
turnover
frequency
(4.43
s
for
OER;
3.96
HER)
are
significantly
superior
those
standard
Pt/C
IrO
2
synergistic
effect
nanocomposite's
different
components
is
responsible
enhanced
performance.
A
functional
theory
study
revealed
that
multi‐interface
heterostructure
contribute
increased
electrical
conductivity
decreased
energy
barrier,
in
HER/OER
activity.
presents
novel
vision
designing
advanced
electrocatalysts
performance
water
splitting.
Various
composites
have
been
utilized
water‐splitting
applications.
investigates
use
MW/HK/NiMn‐S
splitting
first
time
indicate
between
carbon‐based
materials
along
layered
compounds
porous
MOF.
each
component
composite
can
be
an
interesting
topic
field
ACS Nano,
Год журнала:
2023,
Номер
17(17), С. 17254 - 17264
Опубликована: Авг. 31, 2023
The
emerging
lattice-oxygen
oxidation
mechanism
(LOM)
presents
attractive
opportunities
for
breaking
the
scaling
relationship
to
boost
oxygen
evolution
reaction
(OER)
with
direct
OLattice-*O
interaction.
However,
currently
LOM-triggering
rationales
are
still
debated,
and
a
streamlined
physicochemical
paradigm
is
extremely
desirable
design
of
LOM-defined
OER
catalysts.
Herein,
Ni
metal-organic
framework/black
phosphorene
(NiMOF/BP)
heterostructure
theoretically
profiled
constructed
as
catalytic
platform
LOM-derived
studies.
It
found
that
p-type
BP
host
can
enlarge
Ni-O
bond
polarizability
NiMOF
through
stretching
valence
declining
synergically.
Such
an
enlarged
will
in
principle
alleviate
lattice
confinement
benefit
LOM
pathway
performance.
As
result,
optimized
NiMOF/BP
catalyst
exhibits
promising
performance
low
overpotential
260
mV
at
10
mA
cm-2
long-term
stability
1
M
KOH
electrolyte.
Both
experiment
calculation
results
suggest
activated
more
balanced
step
barrier
catalyst.
This
research
puts
forward
criterion
LOM-scaled
electrocatalysts
water
oxidation.
Abstract
Developing
efficient
metal‐nitrogen‐carbon
(M‐N‐C)
single‐atom
catalysts
for
oxygen
reduction
reaction
(ORR)
is
significant
the
widespread
implementation
of
Zn‐air
batteries,
while
synergic
design
matrix
microstructure
and
coordination
environment
metal
centers
remains
challenges.
Herein,
a
novel
salt
effect‐induced
strategy
proposed
to
engineer
N
P
coordinated
atomically
dispersed
Fe
atoms
with
extra‐axial
Cl
on
interlinked
porous
carbon
nanosheets,
achieving
superior
catalyst
(denoted
as
Fe‐NP‐Cl‐C)
ORR
batteries.
The
hierarchical
nanosheet
architecture
can
provide
rapid
mass/electron
transfer
channels
facilitate
exposure
active
sites.
Experiments
density
functional
theory
(DFT)
calculations
reveal
distinctive
Fe‐N
2
‐Cl
sites
afford
significantly
reduced
energy
barriers
promoted
kinetics
ORR.
Consequently,
Fe‐NP‐Cl‐C
exhibits
distinguished
performance
half‐wave
potential
(E
1/2
)
0.92
V
excellent
stability.
Remarkably,
assembled
battery
based
delivers
an
extremely
high
peak
power
260
mW
cm
−2
large
specific
capacity
812
mA
h
g
−1
,
outperforming
commercial
Pt/C
most
reported
congeneric
catalysts.
This
study
offers
new
perspective
structural
optimization
engineering
electrocatalysis
conversion
devices.
ACS Nano,
Год журнала:
2024,
Номер
18(26), С. 16413 - 16449
Опубликована: Июнь 21, 2024
Layered
double
hydroxides
(LDHs),
especially
those
containing
nickel
(Ni),
are
increasingly
recognized
for
their
potential
in
photo(-/)electrocatalytic
water
oxidation
due
to
the
abundant
availability
of
Ni,
corrosion
resistance,
and
minimal
toxicity.
This
review
provides
a
comprehensive
examination
Ni-based
LDHs
electrocatalytic
(EC),
photocatalytic
(PC),
photoelectrocatalytic
(PEC)
processes.
The
delves
into
operational
principles,
highlighting
similarities
distinctions
as
well
benefits
limitations
associated
with
each
method
oxidation.
It
includes
detailed
discussion
on
synthesis
monolayer,
ultrathin,
bulk
LDHs,
focusing
merits
drawbacks
inherent
approach.
Regarding
EC
oxygen
evolution
reaction
(OER),
strategies
improve
catalytic
performance
insights
structural
during
process
summarized.
Furthermore,
extensively
covers
advancements
PEC
OER,
including
an
analysis
semiconductors
paired
form
photoanodes,
focus
enhanced
activity,
stability,
underlying
mechanisms
facilitated
by
LDHs.
concludes
addressing
challenges
prospects
development
innovative
LDH
catalysts
practical
applications.
provided
this
paper
will
not
only
stimulate
further
research
but
also
engage
scientific
community,
thus
driving
field
forward.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(9), С. 5474 - 5492
Опубликована: Янв. 1, 2024
The
central
aim
of
this
investigation
was
to
innovate
a
novel
nanocatalyst
for
the
eco-friendly
synthesis
benzothiazoles
through
an
acceptorless
dehydrogenative
coupling
2-aminothiophenol
and
benzyl
alcohol,
mitigating
environmental
impact.