Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
Abstract
The
electroreduction
reaction
of
CO
2
(eCO
RR)
is
considered
an
effective
pathway
for
clean
fuel
production,
greenhouse
gas
reduction,
and
resource
recycling.
Atomically
dispersed
catalysts
exhibit
excellent
catalytic
activity
due
to
the
high
dispersion
atoms,
especially
atomically
copper
(AD
Cu).
Although
copper‐based
materials
are
major
single
component
capable
producing
multi‐carbon
products,
mechanism
usually
not
very
clear.
For
AD
Cu
catalysts,
dynamic
transformation
species
in
form
(nano)clusters,
ions
during
process
significantly
has
effect
on
performance
eCO
RR.
core
issue
that
needs
be
addressed
how
control
tune
aggregation
atoms
make
it
most
favorable
desired
product
or
pathways.
This
review
summarizes
optimization
strategies
recent
years
from
three
main
perspectives:
interface
engineering,
electrode
external
field
coupling.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 19, 2025
Abstract
Numerous
in
situ
characterization
studies
have
focused
on
revealing
the
catalytic
mechanisms
of
single‐atom
catalysts
(SACs),
providing
a
theoretical
basis
for
their
rational
design.
Although
research
is
relatively
limited,
stability
SACs
under
long‐term
operating
conditions
equally
important
and
prerequisite
real‐world
energy
applications,
such
as
fuel
cells
water
electrolyzers.
Recently,
there
has
been
rise
destabilization
regeneration
SACs;
however,
timely
comprehensive
summaries
that
provide
catalysis
community
with
valuable
insights
directions
are
still
lacking.
This
review
summarizes
recent
advances
strategies
SACs,
specifically
highlighting
various
state‐of‐the‐art
techniques
employed
studies.
The
factors
induce
identified
by
discussing
failure
active
sites,
coordination
environments,
supports,
reaction
scenarios.
Next,
primary
introduced,
including
redispersion,
surface
poison
desorption,
exposure
subsurface
sites.
Additionally,
advantages
limitations
both
ex
discussed.
Finally,
future
proposed,
aimed
at
constructing
structure–stability
relationships
guiding
design
more
stable
SACs.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(52)
Published: Nov. 26, 2024
Abstract
Electrocatalytic
carbon
dioxide
(CO
2
)
conversion
into
valuable
chemicals
paves
the
way
for
realization
of
recycling.
Downsizing
catalysts
to
single‐atom
(SACs),
dual‐atom
(DACs),
and
sub‐nanocluster
(SNCCs)
has
generated
highly
active
selective
CO
transformation
reduced
products.
This
is
due
introduction
numerous
sites,
unsaturated
coordination
environments,
efficient
atom
utilization,
confinement
effect
compared
their
nanoparticle
counterparts.
Herein,
recent
Cu‐based
SACs
are
first
reviewed
newly
emerged
DACs
SNCCs
expanding
catalysis
electrocatalytic
reduction
RR)
high‐value
products
discussed.
Tandem
SAC–nanocatalysts
(NCs)
(SAC–NCs)
also
discussed
RR
Then,
non‐Cu‐based
SACs,
DACs,
SAC–NCs,
theoretical
calculations
various
transition‐metal
summarized.
Compared
previous
achievements
less‐reduced
products,
this
review
focuses
on
double
objective
achieving
full
increasing
selectivity
formation
rate
toward
C–C
coupled
with
additional
emphasis
stability
catalysts.
Finally,
through
combined
experimental
research,
future
outlooks
offered
further
develop
over
isolated
atoms
sub‐nanometal
clusters.
ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 5763 - 5770
Published: Nov. 6, 2024
High-entropy
metal–organic
frameworks
(HE-MOFs)
offer
immense
potential
in
electrocatalysis
due
to
their
diverse
metallic
compositions
and
high
densities
of
active
sites.
Integrating
bimetallic
single-atom
catalysts
(SACs)
with
HE-MOFs
for
enhanced
oxygen
evolution
reaction
(OER)
performance
remains
challenging.
Here,
we
stabilize
atomically
dispersed
Ru
Mo
amorphous
HE-MOF
nanosheets
(HE(Ru,Mo)-MOFs)
via
situ-formed
high-entropy
oxides,
elucidating
the
deprotonation
mechanism.
Evidence
supports
presence
high-density
O-bridged
dual-atom
The
multimetallic
composition
induces
electronic
redistribution
balances
oxidation
state
metal
sites,
enhancing
intrinsic
OER
activity.
HE(Ru,Mo)-MOFs
exhibit
low
overpotentials
267
mV@10
mA
cm–2
266
alkaline
freshwater
industrial
wastewater,
respectively,
exceptional
durability
surpassing
that
commercial
RuO2
catalysts.
Mechanistic
insights
reveal
atomic
dispersion
facilitates
rapid
charge
transfer
intermediate
transformation,
promising
advanced
energy
conversion.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
Abstract
Achieving
fast
conversion
and
precise
regulation
of
product
selectivity
in
electrochemical
CO
2
reduction
reaction
(CO
RR)
remains
a
challenge.
The
space
confinement
effect
provides
theoretical
basis
for
the
design
catalysts
different
morphology
sizes
reveals
physical
phenomena
caused
by
electrons
other
particles
at
nanoscale.
In
this
work,
semi‐confinement
concept
is
introduced
mesoporous
silica
nanosphere
supported
Cu
catalyst
(Cu‐MSN)
prepared
as
typical
example
to
realize
RR
enhancement
(methane
vs
ethylene).
semi‐confined
structure
partially
solves
mass
transfer
problem
classical
confined
catalysis.
Cu‐MSN
allows
flexible
controls
aggregation
form
species
loading
amount,
which
achieves
free
switch
from
methane
Faraday
efficiency
71.1%
ethylene
66.4%.
Various
characterizations
confirm
that
adsorption
behavior
local
coordination
transformation
(from
Cu─O─Si
Cu─O─Cu),
can
stabilize
key
intermediates
*
CHO
COH
generating
respective
ethylene.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
Abstract
The
electrocatalytic
conversion
of
CO
2
into
valuable
multi‐carbon
(C
2+
)
products
using
Cu‐based
catalysts
has
attracted
significant
attention.
This
review
provides
a
comprehensive
overview
recent
advances
in
catalyst
design
to
improve
C
selectivity
and
operational
stability.
It
begins
with
an
analysis
the
fundamental
reaction
pathways
for
formation,
encompassing
both
established
emerging
mechanisms,
which
offer
critical
insights
design.
In
situ
techniques,
essential
validating
these
by
real‐time
observation
intermediates
material
evolution,
are
also
introduced.
A
key
focus
this
is
placed
on
how
enhance
through
manipulation,
particularly
emphasizing
catalytic
site
construction
promote
C─C
coupling
via
increasing
*
coverage
optimizing
protonation.
Additionally,
challenge
maintaining
activity
under
conditions
discussed,
highlighting
reduction
active
charged
Cu
species
materials
reconstruction
as
major
obstacles.
To
address
these,
describes
strategies
preserve
sites
control
including
novel
utilization
mitigation
reconstruction.
By
presenting
developments
challenges
ahead,
aims
guide
future
conversion.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 24, 2025
The
electrocatalytic
conversion
of
carbon
dioxide
(CO2)
to
ethylene
(C2H4)
holds
great
promise
for
sustainable
chemical
synthesis,
yet
achieving
industrially
relevant
production
rates
remains
a
significant
challenge.
Through
computational
screening,
we
have
identified
praseodymium
(Pr)
single-atom
alloy
embedded
in
copper
(Cu)
catalyst
(Pr@Cu)
that
exhibits
superior
CO2
activation
and
remarkably
low
energy
barrier
asymmetric
*CO-*CHO
coupling,
primarily
by
facilitating
the
*CHO
intermediate
formation.
Our
optimized
catalyst,
Pr@Cu-2
(6
wt
%
Pr),
achieves
C2H4
Faradaic
efficiency
(FE)
64.2%
at
-1.6
V
versus
reversible
hydrogen
electrode
(RHE)
under
high
current
density
1200
mA
cm-2
reduction
reaction
(CO2RR).
Furthermore,
when
integrated
into
100
cm2
membrane
assembly
(MEA)
electrolyzer,
demonstrates
robust
performance,
maintaining
continuous
rate
21.3
mL
min-1
20
A
over
200
h.
This
work
provides
fundamental
insights
role
Pr
alloys
CO2RR
highlights
their
potential
scalable
electrosynthesis.
