Frontiers in Energy Research,
Год журнала:
2024,
Номер
12
Опубликована: Окт. 24, 2024
The
production
of
hydrogen
(H
2
)
and
multi-carbon
fuels
through
water
electrolysis
(oxygen
evolution
reaction
(OER)/hydrogen
(HER))
water–CO
co-electrolysis
(OER/CO
reduction
(CO
RR)),
respectively,
is
supposed
to
be
the
emergent
energy
carrier.
These
electrochemical
processes
are
essential
chemical
conversion
pathways
that
initiate
changes
toward
renewable
energy.
This
review
summarizes
systematic
design
earth-abundant
transition
metal-based
nanomaterials
their
electrocatalytic
activities
reactions
such
as
OER,
HER,
CO
RR.
primary
focus
on
fabricating
highly
effective,
low-cost,
advanced
nanostructures
for
both
OER/HER
OER/CO
RR
systems.
Developing
synthetic
strategies
surface
morphology-controlled
nanostructured
electrocatalysts,
engineering
electrode
surface,
enhancing
activity,
understanding
relationship
between
intrinsic
catalytic
activity
preparation
approaches
or
precursor
choices,
exploring
mechanism
focused
on.
Furthermore,
current
challenges,
figure-of-merit,
prospects
described.
study
may
open
new
opportunities
develop
shape-controlled
high-performance
electrocatalysts
storage
reactions.
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Сен. 25, 2024
Abstract
Green
hydrogen
from
water
splitting
has
emerged
as
a
critical
energy
vector
with
the
potential
to
spearhead
global
transition
fossil
fuel-independent
society.
The
field
of
catalysis
been
revolutionized
by
single-atom
catalysts
(SACs),
which
exhibit
unique
and
intricate
interactions
between
atomically
dispersed
metal
atoms
their
supports.
Recently,
bimetallic
SACs
(bimSACs)
have
garnered
significant
attention
for
leveraging
synergistic
functions
two
ions
coordinated
on
appropriately
designed
BimSACs
offer
an
avenue
rich
metal–metal
metal–support
cooperativity,
potentially
addressing
current
limitations
in
effectively
furnishing
transformations
involve
synchronous
proton–electron
exchanges,
substrate
activation
reversible
redox
cycles,
simultaneous
multi-electron
transfer,
regulation
spin
states,
tuning
electronic
properties,
cyclic
states
low
energies.
This
review
aims
encapsulate
growing
advancements
bimSACs,
emphasis
pivotal
role
generation
via
splitting.
We
subsequently
delve
into
advanced
experimental
methodologies
elaborate
characterization
SACs,
elucidate
discuss
local
coordination
environment.
Overall,
we
present
comprehensive
discussion
deployment
bimSACs
both
evolution
reaction
oxygen
reaction,
half-reactions
electrolysis
process.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Июль 18, 2024
Abstract
This
work
reports
the
use
of
defect
engineering
and
carbon
supporting
to
achieve
metal-doped
phosphides
with
high
activities
stabilities
for
hydrogen
evolution
reaction
(HER)
oxygen
(OER)
in
alkaline
media.
Specifically,
nitrogen-doped
nanofiber-supported
Ni-doped
CoP
3
rich
P
defects
(Pv·)
on
cloth
(p-NiCoP/NCFs@CC)
is
synthesized
through
a
plasma-assisted
phosphorization
method.
The
p-NiCoP/NCFs@CC
an
efficient
stable
catalyst
HER
OER.
It
only
needs
overpotentials
107
306
mV
drive
100
mA
cm
−2
OER,
respectively.
Its
catalytic
are
higher
than
those
other
catalysts
reported
recently.
mainly
arise
from
its
peculiar
structural
features.
density
functional
theory
calculation
indicates
that
Pv·
richness,
Ni
doping,
can
optimize
adsorption
H
atoms
at
surface
promote
strong
electronic
couplings
between
p-NiCoP
oxide
layer
formed
during
OER
process.
gives
When
used
water
electrolyzers,
shows
superior
activity
excellent
stability
overall
splitting.
Graphical
abstract
Coordination Chemistry Reviews,
Год журнала:
2024,
Номер
521, С. 216112 - 216112
Опубликована: Авг. 24, 2024
Electro-induced
water
splitting
module
is
a
fascinating
strategy
for
the
conversion
of
electricity
into
scalable
and
clean
H
2
as
future
energy
carrier
has
significantly
attracted
attention
scientific
community.
Despite
countless
research
on
electrolyzers,
cost-effective
durable
electrode
materials
with
high
efficiency
remain
challenge
dream
in
this
quest.
This
critical
review
devoted
to
systemically
presenting
upsurge
recently
rationally
explored
highly
stable
benchmark
electrocatalysts
(both
noble
non-noble)
understand
design
principles,
performances,
compelling
reasons/chemistry
behind
enhanced
catalytic
potential
over
traditional
half-cell
oxygen
evolution
reaction
(OER)
hydrogen
(HER).
Moreover,
(at
least
≥50
h)
their
bi-functional
conduct
evaluated
prototype
electrolyzer
integrated
photovoltaic
(PV)
or
batteries
at
laboratory
level
are
discussed,
yet
an
untold
unsummarized
story
electrochemical
splitting.
Next,
current
status
technology,
socio-economic
challenges,
possible
solutions,
key
considerations
fundamental
principles/concepts
scheme
outlined
from
point
practical
application.
Typical
challenges
regarding
identifying,
preparing,
scaling
electrocatalysts,
but
foundations
now
strong,
outlook
visible
exciting
next-generation
technology.
•
Critical
Benchmark
Understanding
performances
mechanistic
studies
scrutiny
technology
Long
term
stability
electrocatalyst
Full
cell
investigation
PV
integration
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 12, 2025
The
metastable
crystal
structure
is
difficult
to
synthesize
and
maintain
but
normally
acts
as
special
active
sites
with
improved
functional
properties.
Herein,
a
moderate
crystallographic
transformation
strategy
used
effectively
RuO2.
By
controlling
the
degree
of
oxidation,
we
constructed
different
heterophase
Ru/RuO2
catalysts.
results
show
that
fcc-Ru/fcc-RuO2
heterointerphase
holds
an
matching
property
accompanied
by
enhanced
water
dissociation
appropriate
adsorption
capacity
for
intermediates,
achieving
current
density
10
mA
cm–2
at
low
potential
11.2
mV.
This
study
provides
effective
extension
phase
design
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 17, 2025
Ammonia
emissions
from
vehicles
and
power
plants
cause
severe
environmental
issues,
including
haze
pollution
nitrogen
deposition.
Selective
catalytic
oxidation
(SCO)
is
a
promising
technology
for
ammonia
abatement,
but
current
catalysts
often
struggle
with
insufficient
activity
poor
selectivity,
leading
to
the
formation
of
secondary
pollutants.
In
this
study,
we
developed
bifunctional
Ru/Cu-CHA
zeolite
catalyst
oxidation,
incorporating
both
SCO
sites
(Ru)
selective
reduction
(SCR,
Cu).
Various
characterizations,
HAADF-STEM,
XAFS,
H2-TPR,
revealed
that
Cu2+
cations
are
dispersed
within
CHA
zeolite,
while
RuOx
clusters
nanoparticles
present
inside
on
surface
zeolite.
Operando
DRIFTS-MS,
in
situ
Raman
spectroscopy,
DFT
calculations
confirmed
NH3
adsorbed
Lewis
acid
efficiently
reduced
RuO2
lower
energy
barrier,
significantly
enhancing
low-temperature
catalyst.
Additionally,
further
facilitated
elimination
byproducts
(NOx)
via
tandem
SCR
reaction,
thus
greatly
improving
selectivity.
This
synergistic
effect
contributed
high
(>94%
at
200
°C)
excellent
selectivity
(>90%
even
temperatures
above
325
Ru2.5/Cu-CHA
during
practical
presence
NOx
water
vapor.
