Breaking symmetry for better catalysis: insights into single-atom catalyst design
Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
review
examines
the
strategies
of
symmetry
breaking
(charge/coordination/geometric)
in
single-atom
catalysts
to
regulate
active
site
electronic
structures,
greatly
enhancing
catalytic
performance.
Язык: Английский
Single-Atom Suture
ACS Nano,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
In
atomically
thin
two-dimensional
(2D)
materials,
grain
boundaries
(GBs)
are
ubiquitous,
displaying
a
profound
effect
on
the
electronic
structure
of
host
lattice.
The
random
configuration
atoms
within
GBs
introduces
an
arbitrary
and
unpredictable
local
environment,
which
may
hazard
electron
transport.
Herein,
by
utilizing
Pt
single-atom
chains
with
ultimate
one-dimensional
(1D)
feature
(width
single
atom
length
up
to
tens
nanometers),
we
realized
suture
pathway
at
diversified
transition
metal
dichalcogenides
(TMDCs).
Theoretical
calculations
reveal
that
construction
sutures
(SAS)
prompts
emergence
states
proximal
Fermi
level,
effectively
modulating
transformation
from
semiconductivity
metallicity.
This
underscores
pivotal
role
SAS
in
reconfiguring
pathway.
Benefiting
this,
SAS-MoS2
emerges
as
excellent
catalyst,
exhibiting
overpotential
41
mV
10
mA
cm-2
Tafel
slope
54
dec-1
hydrogen
evolution
reaction.
Our
results
offer
understanding
conduction
contributed
ultraordered
atomic
arrangement
innovative
mechanisms
for
future
potential
catalysts
optimized
architecture.
Язык: Английский
Breaking the Trade‐Off Between Electrical Conductivity and Mechanical Strength in Bulk Graphite Using Metal–Organic Framework‐Derived Precursors
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 9, 2025
Abstract
High‐performance
bulk
graphite
(HPBG)
that
simultaneously
integrates
superior
electrical
conductivity
and
excellent
strength
is
in
high
demand,
yet
it
remains
critical
challenging.
Herein
a
novel
approach
introduced
utilizing
MOF‐derived
nanoporous
metal/carbon
composites
as
precursors
to
circumvent
this
traditional
trade‐off.
The
resulting
graphite,
composed
of
densely
packed
multilayered
graphene
sheets
functionalized
with
diverse
cobalt
forms
(nanoparticles,
single
atoms,
clusters),
exhibits
unprecedented
all
directions
(in‐plane:
7311
S
cm⁻¹,
out‐of‐plane:
5541
cm⁻¹)
mechanical
(flexural:
101.17±5.73
MPa,
compressive:
151.56±2.53
MPa).
Co
nanoparticles
act
autocatalysts
binders,
promoting
strong
interlayer
adhesion
among
highly
graphitized
layers
via
spark
plasma
sintering.
nano‐interfaces
between
Co‐create
bridges
nanosheets,
facilitating
efficient
electron
migration
enhanced
stiffness
the
assembled
nanocomposites.
Leveraging
these
exceptional
properties,
practical
demonstrations
highlight
immense
potential
robust
material
for
applications
demanding
electromagnetic
interference
shielding
heating.
An
innovative
approach,
which
effectively
decouples
from
paves
way
creation
HPBGs
tailored
application
sectors.
Язык: Английский
Fundamental Mechanistic Insights on the Peripherally Substituted Iron Phthalocyanine Selectively Catalyzing the Sulfur Redox Reactions
Energy storage materials,
Год журнала:
2025,
Номер
unknown, С. 104157 - 104157
Опубликована: Март 1, 2025
Язык: Английский
Electrocatalytic Innovations at Atomic Scale: From Single-Atom to Periodic Ensembles for Sustainable Energy Conversion
Nanomaterials,
Год журнала:
2025,
Номер
15(8), С. 634 - 634
Опубликована: Апрель 21, 2025
Atomically
dispersed
catalysts,
including
single-atom,
dual-atom,
and
periodic
single-metal
site
have
revolutionized
electrocatalysis
by
merging
atomic
precision
with
heterogeneous
stability.
This
review
traces
their
evolution
from
pioneering
stabilization
strategies
to
advanced
microenvironment
engineering,
enabling
breakthroughs
in
oxygen
reduction,
hydrogen
evolution,
CO2
reduction.
SACs
maximize
atom
utilization
but
face
multi-step
reaction
limits,
addressed
DACs
through
synergistic
dual-site
mechanisms.
PSMSCs
further
enhance
activity
via
ordered
arrangements,
ensuring
uniform
active
sites
mechanistic
clarity.
Key
include
engineering
tailor
sites,
as
well
characterization
techniques
revealing
dynamic
restructuring
under
operando
conditions.
The
transition
isolated
atoms
ensembles
highlights
the
importance
of
atomic-level
control
unlocking
new
catalytic
work
underscores
transformative
potential
ADCs
sustainable
energy
technologies
provides
a
roadmap
for
future
research
rational
catalyst
design,
behavior
analysis,
scalable
synthesis.
Язык: Английский
Engineering Local Coordination and Electronic Structures of Dual-Atom Catalysts
ACS Nano,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 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.
Язык: Английский