Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(39)
Published: May 17, 2022
Abstract
Atomically
dispersed
metal
catalysts
have
triggered
great
interest
in
the
field
of
catalysis
owing
to
their
unique
features.
Isolated
single
or
few
atoms
can
be
anchored
on
substrates
via
chemical
bonding
space
confinement
maximize
atom
utilization
efficiency.
The
key
challenge
lies
precisely
regulating
geometric
and
electronic
structure
active
centers,
thus
significantly
influencing
catalytic
properties.
Although
several
reviews
been
published
preparation,
characterization,
application
single‐atom
(SACs),
comprehensive
understanding
SACs,
dual‐atom
(DACs),
atomic
clusters
has
never
systematically
summarized.
Here,
recent
advances
engineering
local
environments
state‐of‐the‐art
DACs,
for
enhanced
performance
are
highlighted.
Firstly,
various
synthesis
approaches
presented.
Then,
special
attention
is
focused
elucidation
terms
state
coordination
structure.
Furthermore,
a
summary
isolated
applications
thermocatalysis,
electrocatalysis,
photocatalysis
provided.
Finally,
potential
challenges
future
opportunities
this
emerging
This
review
will
pave
way
regulate
microenvironment
site
boosting
processes.
Angewandte Chemie International Edition,
Journal Year:
2021,
Volume and Issue:
60(23), P. 12971 - 12979
Published: March 27, 2021
Abstract
Photothermal
therapy
(PTT)
is
an
extremely
promising
tumor
therapeutic
modality.
However,
excessive
heat
inevitably
injures
normal
tissues
near
tumors,
and
the
damage
to
cancer
cells
caused
by
mild
hyperthermia
easily
repaired
stress‐induced
shock
proteins
(HSPs).
Thus,
maximizing
PTT
efficiency
minimizing
healthy
simultaneously
adopting
appropriate
temperatures
imperative.
Herein,
innovative
strategy
reported:
ferroptosis‐boosted
based
on
a
single‐atom
nanozyme
(SAzyme).
The
Pd
SAzyme
with
atom‐economical
utilization
of
catalytic
centers
exhibits
peroxidase
(POD)
glutathione
oxidase
(GSHOx)
mimicking
activities,
photothermal
conversion
performance,
which
can
result
in
ferroptosis
featuring
up‐regulation
lipid
peroxides
(LPO)
reactive
oxygen
species
(ROS).
accumulation
LPO
ROS
provides
powerful
approach
for
cleaving
HSPs,
enables
SAzyme‐mediated
mild‐temperature
PTT.
Chemical Society Reviews,
Journal Year:
2021,
Volume and Issue:
50(13), P. 7745 - 7778
Published: Jan. 1, 2021
Bifunctional
oxygen
reduction
and
evolution
constitute
the
core
processes
for
sustainable
energy
storage.
The
advances
on
noble-metal-free
bifunctional
electrocatalysts
are
reviewed.
Energy & Environmental Science,
Journal Year:
2021,
Volume and Issue:
14(6), P. 3522 - 3531
Published: Jan. 1, 2021
Isolated
Fe
sites
achieve
enhanced
intrinsic
activity
for
nitrate
electroreduction
to
ammonia
with
∼100%
selectivity,
which
effectively
inhibit
water
dissociation
through
a
nitrate-preoccupation
mechanism.
Joule,
Journal Year:
2022,
Volume and Issue:
6(1), P. 92 - 133
Published: Jan. 1, 2022
Artificial
photocatalytic
energy
conversion
represents
a
highly
intriguing
strategy
for
solving
the
crisis
and
environmental
problems
by
directly
harvesting
solar
energy.
The
development
of
efficient
photocatalysts
is
central
task
pushing
real-world
application
reactions.
Due
to
maximum
atomic
utilization
efficiency
distinct
advantages
outstanding
catalytic
activity,
single-atom
catalysts
(SACs)
have
emerged
as
promising
candidates
photocatalysts.
In
current
review,
recent
progresses
challenges
on
SACs
systems
are
presented.
Fundamental
principles
focusing
charge
separation/transfer
molecular
adsorption/activation
photocatalysis
systemically
explored.
We
outline
how
isolated
reactive
sites
facilitate
photogenerated
electron–hole
transfer
promote
construction
photoactivation
cycles.
widespread
adoption
in
diverse
reactions
also
comprehensively
introduced.
By
presenting
these
advances
addressing
some
future
with
potential
solutions
related
integral
over
SACs,
we
expect
shed
light
forthcoming
research
conversion.
Journal of the American Chemical Society,
Journal Year:
2022,
Volume and Issue:
144(40), P. 18155 - 18174
Published: Sept. 29, 2022
Single-atom-site
catalysts
(SASCs)
featuring
maximized
atom
utilization
and
isolated
active
sites
have
progressed
tremendously
in
recent
years
as
a
highly
prosperous
branch
of
catalysis
research.
Varieties
SASCs
been
developed
that
show
excellent
performance
many
catalytic
applications.
The
major
goal
SASC
research
is
to
establish
feasible
synthetic
strategies
for
the
preparation
high-performance
catalysts,
achieve
an
in-depth
understanding
active-site
structures
mechanisms,
develop
practical
with
industrial
value.
This
Perspective
describes
up-to-date
development
related
such
dual-atom-site
(DASCs)
nano-single-atom-site
(NSASCs),
analyzes
current
challenges
encountered
by
these
applications,
proposes
their
possible
future
path.
Journal of the American Chemical Society,
Journal Year:
2021,
Volume and Issue:
143(44), P. 18643 - 18651
Published: Nov. 2, 2021
Although
great
progress
has
been
made
in
artificial
enzyme
engineering,
their
catalytic
performance
is
far
from
satisfactory
as
alternatives
of
natural
enzymes.
Here,
we
report
a
novel
and
efficient
strategy
to
access
high-performance
nanozymes
via
direct
atomization
platinum
nanoparticles
(Pt
NPs)
into
single
atoms
by
reversing
the
thermal
sintering
process.
Atomization
Pt
NPs
makes
metal
sites
fully
exposed
results
engineerable
structural
electronic
properties,
thereby
leading
dramatically
enhanced
enzymatic
performance.
As
expected,
as-prepared
thermally
stable
single-atom
nanozyme
(PtTS-SAzyme)
exhibited
remarkable
peroxidase-like
activity
kinetics,
exceeding
nanoparticle
nanozyme.
The
following
density
functional
theory
calculations
revealed
that
engineered
P
S
not
only
promote
process
PtTS-SAzyme
but
also
endow
with
unique
structure
owing
electron
donation
atoms,
well
acceptance
N
which
simultaneously
contribute
substantial
enhancement
enzyme-like
PtTS-SAzyme.
This
work
demonstrates
nanoparticle-based
an
effective
for
engineering
nanozymes,
opens
up
new
way
rationally
design
optimize
enzymes
mimic
