ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 1, 2025
Heterogeneous
dual-atom
catalysts
(DACs),
defined
by
atomically
precise
and
isolated
metal
pairs
on
solid
supports,
have
garnered
significant
interest
in
advancing
catalytic
processes
technologies
aimed
at
achieving
sustainable
energy
chemical
production.
DACs
present
board
opportunities
for
atomic-level
structural
property
engineering
to
enhance
performance,
which
can
effectively
address
the
limitations
of
single-atom
catalysts,
including
restricted
active
sites,
spatial
constraints,
typically
positive
charge
nature
supported
single
species.
Despite
rapid
progress
this
field,
intricate
relationship
between
local
atomic
environments
behavior
dual-metal
sites
remains
insufficiently
understood.
This
review
highlights
recent
major
challenges
field.
We
begin
discussing
modulation
coordination
electronic
structures
its
impact
performance.
Through
specific
case
studies,
we
demonstrate
importance
optimizing
entire
ensemble
achieve
efficient,
selective,
stable
performance
both
model
industrially
relevant
reactions.
Additionally,
also
outline
future
research
directions,
emphasizing
synthesis,
characterization,
practical
applications,
aiming
fully
unlock
potential
these
advanced
catalysts.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 26, 2025
Abstract
As
a
key
reaction
in
water
electrolysis
and
fuel
cells,
the
oxygen
evolution
(OER)
involves
sluggish
four‐electron
proton
transfer
process.
Understanding
OER
pathways
kinetics
is
critical
for
designing
efficient
electrocatalysts.
In
this
study,
through
density
functional
theory
(DFT)
calculations,
it
demonstrated
that
incorporation
of
Gd
into
Fe‐doped
NiO
elevates
O
2
p
band
center
generates
more
unoccupied
states.
Furthermore,
promotes
formation
vacancies,
which,
together,
enhance
lattice
oxidation
mechanism
(LOM)
pathway
OER.
The
adsorption‐free
energy
diagrams
confirm
doping
significantly
lowers
theoretical
overpotentials
at
both
Fe
Ni
sites
NiO,
thereby
improving
activity.
Based
on
these
findings,
co‐doped
ultrathin
nanosheets
are
synthesized
via
spray
combustion.
an
catalyst,
material
exhibited
low
overpotential
227
mV,
which
40
mV
lower
than
long‐term
catalytic
stability
over
150
h.
anion
exchange
membrane
system,
stable
performance
120
h
current
20
mA
cm
−2
.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: March 12, 2025
Fully
triggering
the
deep-seated
potential
of
traditional
nanomaterials,
such
as
classic
spinel
family,
is
paramount
importance
in
field
materials
science,
which
yet
believed
to
heavily
depend
on
advanced
conceptual
designs
and
synthetic
strategies.
Herein,
a
type
inorganic–organic
hybrid
oxide
designed
using
π-conjugated
azobenzene
single-tooth
coordination
method
overcome
their
stubborn
problems
moderate
activity
phase
instability
electrocatalytic
reactions.
Taking
Co3O4
nanocubes
pre-catalyst,
after
subtle
etching
cube
surfaces,
some
oxygen
atoms
tetrahedral
Co–O
are
replaced
selectively
linked
weakly
polar
azo-extended
units
(π*–N=N–π*)
via
electrophilic
carboxyl
groups.
The
π-conjugation
structure
suppresses
covalency
competition
between
octahedral
fields,
successfully
preventing
transition
during
process
improving
durability.
This
study
not
only
expands
family
but
also
provides
useful
guidelines
for
developing
functional
materials.
Unlocking
nanomaterials
like
oxides
crucial
catalytic
evolution
reaction.
Here,
authors
report
an
that
enhances
both
structural
stability
through
method.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 1, 2025
Heterogeneous
dual-atom
catalysts
(DACs),
defined
by
atomically
precise
and
isolated
metal
pairs
on
solid
supports,
have
garnered
significant
interest
in
advancing
catalytic
processes
technologies
aimed
at
achieving
sustainable
energy
chemical
production.
DACs
present
board
opportunities
for
atomic-level
structural
property
engineering
to
enhance
performance,
which
can
effectively
address
the
limitations
of
single-atom
catalysts,
including
restricted
active
sites,
spatial
constraints,
typically
positive
charge
nature
supported
single
species.
Despite
rapid
progress
this
field,
intricate
relationship
between
local
atomic
environments
behavior
dual-metal
sites
remains
insufficiently
understood.
This
review
highlights
recent
major
challenges
field.
We
begin
discussing
modulation
coordination
electronic
structures
its
impact
performance.
Through
specific
case
studies,
we
demonstrate
importance
optimizing
entire
ensemble
achieve
efficient,
selective,
stable
performance
both
model
industrially
relevant
reactions.
Additionally,
also
outline
future
research
directions,
emphasizing
synthesis,
characterization,
practical
applications,
aiming
fully
unlock
potential
these
advanced
catalysts.
