Abstract
Atomically
dispersed
metal
atoms
on
supports
exhibit
distinctive
advantages
in
maximizing
atomic
utilization,
which
plays
an
indispensable
role
the
fabrication
of
cost‐effective
catalysts.
In
particular,
dual‐atom
catalysts
(DACs)
containing
dual
active
sites
not
only
retain
merits
single‐atom
(SACs),
but
also
introduce
diverse
interactions
between
two
adjacent
atoms,
endowing
them
with
superior
catalytic
performance
and
a
broad
range
applications.
With
development
DACs,
it
is
important
to
identify
establish
intrinsic
mechanisms
relationship.
The
general
characterization
methods
for
DACs
are
comprehensively
summarized
here,
especially
structural
nature
discussed
detail.
Subsequently,
representative
scientific
research
efforts
various
applications
including
thermocatalysis,
electrocatalysis,
photocatalysis
described,
emphasis
structure‐property
relationships.
Finally,
summary
some
prospects
future
advanced
presented.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 5, 2025
Abstract
Considering
the
exceptional
electronic
regulation
capability,
p‐block
elements
can
be
used
to
regulate
charge
density
of
traditional
transition
metal
catalysts.
In
this
work,
CoGa‐NS‐C
dual‐atom
catalysts
(DACs)
are
successfully
synthesized
through
co‐precipitation
and
post‐annealing
treatment.
The
atomic
dispersion
Co
Ga
synergistic
coordination
structure
CoN
3
S
1
GaN
4
confirmed
by
AC‐TEM,
EXAFS,
XPS.
Due
steric
hindrance
effect
adsorbed
*
OH
on
site
asymmetric
heteroatom
species,
adsorption
energy
OOH
intermediation
neighboring
is
thus
enhanced
greatly,
resulting
in
enhancement
2e‐ORR
pathway.
Besides,
Co─OH
intermediates
detected
situ
FT‐IR
EC‐SHINERS
spectroscopy.
A
high
H
2
O
selectivity
90.3%
a
fast
production
rate
1.12
mol
h
−1
g
reached.
addition,
cathodic
oxygen
reduction
couple
with
sulfion
oxidation
reaction
(SOR)
instead
energy‐intensive
OER
reaction.
coupling
system,
SOR
potential
1.31
V
lower
than
process
at
current
intensity
100
mA.
Both
proposed
DACs
strategy
ORR‐SOR
system
beneficial
for
achieving
efficient
energy‐effective
2e‐ORR.
ACS Applied Nano Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 12, 2025
CO2
to
methanol
is
considered
a
promising
method
for
conversion
and
utilization,
yet
achieving
desirable
selectivity
remains
significant
challenge.
Herein,
efficient
hydrogenation
achieved
by
synthesizing
Co0.7ZnO
with
abundant
oxygen
vacancies
(Ov)
through
the
incorporation
of
portion
Co
into
nanoscale
ZnO.
By
tuning
molar
ratio
Co/(Co+Zn)
in
CoxZnO
increase
Ov
content
71%,
adsorption
activation
form
formate
(COOH*)
are
enhanced,
thereby
reducing
CO
selectivity.
The
efficiency
was
optimized
Co0.7ZnO,
which
exhibited
an
impressive
formation
rate
2.1
mmol/(g
h)
up
96.7%.
unique
structure
incorporating
partial
ZnO
level
not
only
reduces
but
also
inhibits
methane
formation,
contributing
high
This
study
presents
innovative
strategic
design
doping,
essential
controlling
target
products
hydrogenation.
ACS Catalysis,
Год журнала:
2024,
Номер
14(21), С. 16434 - 16458
Опубликована: Окт. 23, 2024
Thermo-catalytic
CO2
hydrogenation
to
high-value
oxygenates
has
been
regarded
as
one
of
the
most
powerful
strategies
that
can
potentially
alleviate
excessive
emissions.
However,
due
high
chemical
stability
and
variability
pathways,
it
is
still
challenging
achieve
highly
active
selective
hydrogenation.
Single
atom
catalysts
(SACs)
with
ultrahigh
metal
utilization
efficiency
extraordinary
electronic
features
have
displayed
growing
importance
for
thermo-catalytic
multiple
developed
improve
performances.
Here,
we
review
breakthroughs
in
developing
SACs
efficient
toward
common
(CO,
HCOOH,
CH3OH,
CH3CH2OH)
following
order:
first,
an
analysis
reaction
mechanisms
thermodynamics
challenges
reactions;
second,
a
summary
SAs
designed
by
dividing
them
into
two
categories
single-
dual-sites;
third,
discussion
support
effects
focus
on
approaches
regulating
strong
metal–support
interaction
(MSI).
Summarily,
current
future
perspectives
develop
higher-performance
are
presented.
We
expect
this
bring
more
design
inspiration
trigger
innovation
catalytic
evolution
materials
eventually
benefit
achievement
carbon-neutrality
goal.
ACS Catalysis,
Год журнала:
2024,
Номер
14(13), С. 9850 - 9859
Опубликована: Июнь 17, 2024
We
present
here
the
synthesis
and
performance
of
dual-atom
catalysts
(DACs),
analogous
to
well-known
single-atom
(SACs).
DACs
feature
sites
containing
pairs
metal
atoms
can
outperform
SACs
due
their
additional
binding
possibilities.
Yet
quantifying
improved
catalytic
activity
in
terms
proximity
effects
remains
difficult,
as
it
requires
both
high-resolution
kinetic
data
an
understanding
reaction
pathways.
Here,
we
use
automated
bubble
counter
setup
for
comparing
ceria-supported
platinum
ammonia
borane
hydrolysis.
The
were
synthesized
by
wet
impregnation
characterized
using
SEM,
HAADF-STEM,
XRD,
XPS,
CO-DRIFTS.
High-precision
studies
hydrolysis
presence
show
two
temperature-dependent
regions,
with
a
transition
point
at
43
°C.
Conversely,
only
one
regime.
that
this
is
because
preorganize
water
active
site.
proximal
Pt
atom
improves
rate
3-fold
enables
faster
reactions
lower
temperatures.
suggest
enable
activation
water–O–H
bond
well
increase
hydrogen
spillover
effect
adjacent
Interestingly,
benchmark
gives
further
insight
into
mechanisms,
above
what
known
from
CO
oxidation
studies.
