Small,
Journal Year:
2022,
Volume and Issue:
18(46)
Published: Sept. 23, 2022
Abstract
In
recent
years,
some
experiments
and
theoretical
work
have
pointed
out
that
diatomic
catalysts
not
only
retain
the
advantages
of
monoatomic
catalysts,
but
also
introduce
a
variety
interactions,
which
exceed
limit
catalytic
performance
can
be
applied
to
many
fields.
Here,
interaction
between
adjacent
metal
atoms
in
is
elaborated:
synergistic
effect,
spacing
enhancement
effect
(geometric
effect),
electronic
effect.
With
regard
classification
characterization
various
new
are
classified
into
four
categories:
heteronuclear/homonuclear,
with/without
carbon
carriers,
their
measures
introduced
explained
detail.
aspect
preparation
widely
used
atomic
layer
deposition
method,
metal–organic
framework
derivative
simple
ball
milling
method
introduced,
with
emphasis
on
formation
mechanism
catalysts.
Finally,
effective
control
strategies
key
applications
electrocatalysis,
photocatalysis,
thermal
catalysis,
other
fields
given.
Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(9), P. 6257 - 6358
Published: March 21, 2023
The
oxygen
evolution
reaction
(OER)
and
reduction
(ORR)
are
core
steps
of
various
energy
conversion
storage
systems.
However,
their
sluggish
kinetics,
i.e.,
the
demanding
multielectron
transfer
processes,
still
render
OER/ORR
catalysts
less
efficient
for
practical
applications.
Moreover,
complexity
catalyst–electrolyte
interface
makes
a
comprehensive
understanding
intrinsic
mechanisms
challenging.
Fortunately,
recent
advances
in
situ/operando
characterization
techniques
have
facilitated
kinetic
monitoring
under
conditions.
Here
we
provide
selected
highlights
mechanistic
studies
with
main
emphasis
placed
on
heterogeneous
systems
(primarily
discussing
first-row
transition
metals
which
operate
basic
conditions),
followed
by
brief
outlook
molecular
catalysts.
Key
sections
this
review
focused
determination
true
active
species,
identification
sites,
reactive
intermediates.
For
in-depth
insights
into
above
factors,
short
overview
metrics
accurate
characterizations
is
provided.
A
combination
obtained
time-resolved
information
reliable
activity
data
will
then
guide
rational
design
new
Strategies
such
as
optimizing
restructuring
process
well
overcoming
adsorption-energy
scaling
relations
be
discussed.
Finally,
pending
current
challenges
prospects
toward
development
homogeneous
presented.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
17(1), P. 49 - 113
Published: Nov. 7, 2023
This
perspective
highlights
recent
advancements
in
innovative
strategies
to
provide
valuable
insights
into
the
potential
for
energy-saving
hydrogen
production
through
water
electrolysis.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(31)
Published: Feb. 23, 2023
Single/dual-metal
atoms
supported
on
carbon
matrix
can
be
modulated
by
coordination
structure
and
neighboring
active
sites.
Precisely
designing
the
geometric
electronic
uncovering
structure-property
relationships
of
single/dual-metal
confront
with
grand
challenges.
Herein,
this
review
summarizes
latest
progress
in
microenvironment
engineering
single/dual-atom
sites
via
a
comprehensive
comparison
single-atom
catalyst
(SACs)
dual-atom
catalysts
(DACs)
term
design
principles,
modulation
strategy,
theoretical
understanding
structure-performance
correlations.
Subsequently,
recent
advances
several
typical
electrocatalysis
process
are
discussed
to
get
general
reaction
mechanisms
finely-tuned
SACs
DACs.
Finally,
full-scaled
summaries
challenges
prospects
given
for
This
will
provide
new
inspiration
development
atomically
dispersed
electrocatalytic
application.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(4), P. 2313 - 2325
Published: Jan. 30, 2023
Single-atom
introduced
carbon
nanomaterials
show
favorable
oxygen-reduction
reaction
(ORR)
and
oxygen-evolution
(OER)
performance
for
renewable
energy
applications.
Nevertheless,
the
electronic-structure
regulation
by
decorating
heterogeneous
single-metal-atoms
engineering
of
a
single-atom
active-sites'
microenvironment
need
to
be
optimized
simultaneously,
which
is
challenging.
Herein,
we
develop
an
atomic-interfacial-regulation
approach
fabricate
dual
single
Fe/Co
atoms
synchronized
with
both
nitrogen/sulfur
on
defective/graphitic/porous
nanosheets
(Fe,Co/DSA-NSC).
The
unsymmetrically
organized
N
S
coordinated
bridged
atomic-sites
[Fe-(N2S)/Co-(N2S)
moiety]
are
established
prompt
charge-transfer,
lowering
barrier
oxygenated
reaction-intermediates
leading
boost
reaction-kinetics.
As
estimated,
Fe,Co/DSA-NSC
exhibits
improved
ORR/OER
activity
higher
half-wave
potential
lower
overpotential
(E1/2
=
879
mV
η10
210
mV,
respectively)
also
good
cycling
stability
toward
zinc-air
batteries.
This
discovery
hence
provides
widespread
scheme
synergistic-principles
dual-single-atom
catalysts
controlled
Accounts of Materials Research,
Journal Year:
2022,
Volume and Issue:
3(6), P. 584 - 596
Published: May 17, 2022
ConspectusRecent
decades
have
witnessed
the
rapid
development
of
catalytic
science,
especially
after
Taylor
and
Armstrong
proposed
notion
"active
site"
in
1925.
By
optimizing
reaction
paths
reducing
activation
energies
reactions,
catalysts
appear
more
than
90%
chemical
production
involving
homogeneous
catalysis,
heterogeneous
enzyme
catalysis.
Because
100%
efficiency
active
atom
utilization
adjustable
microenvironment
metal
centers,
single-atom
(SACs)
shine
various
fields
for
enhancing
rate,
conversion,
selectivity
reactions.
Nevertheless,
a
solo
site
determines
fixed
adsorption
mode,
intermediates
from
multistep
reactions
linking
with
are
related
to
each
other.
For
specific
reaction,
it
is
almost
impossible
optimally
adjust
every
intermediate
on
simultaneously.
This
phenomenon
termed
scaling
relationship
limit
(SRL)
an
unavoidable
obstacle
pure
SACs.Dual-atom
(DACs),
perfectly
inheriting
advantages
SACs,
can
exhibit
better
performance
simple
SACs
thus
gradually
gained
researchers'
attention.
Depending
dual-metal
structure,
sites
(DMSs)
DACs
be
divided
into
two
separated
heterometal
sites,
linked
homometal
sites.
Two
prescribe
distance
between
electron
interaction.
Currently,
origins
summarized
following
three
points:
(1)
electronic
effect,
which
only
one
center
serves
as
other
plays
regulatory
role;
(2)
synergistic
centers
separately
catalyze
different
core
steps
improve
together;
(3)
offering
additional
changes
structures
break
SRL
based
SACs.
Among
origins,
structure
upon
DMSs
most
effective
technologies
boost
property
basis
To
date,
few
contributions
focused
catalysis
environments,
including
O2
reduction
evolution
H2
CO2
N2
conversion
reactions.In
this
Account,
summary
recent
progress
regarding
will
presented.
First,
unpopular
discovery
research
hot
spot
illustrated
through
timeline.
In
next
section,
categories,
potential
revealed
by
comparison
addition,
techniques
constructing
systematically
summarized,
preparation
carbonous,
pyrolysis-free,
noncarbon-supported,
complex-type
DACs.
Furthermore,
underlying
energy-
environment-related
introduced
detail
assistance
theoretical
calculations.
Finally,
we
affirm
contribution
particularly
electrocatalysis,
provide
outlook
direction
discussing
major
challenges.
It
anticipated
that
Account
inspire
researchers
propel
advance
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(26)
Published: Jan. 27, 2023
The
study
of
direct
methanol
fuel
cells
(DMFCs)
has
lasted
around
70
years,
since
the
first
investigation
in
early
1950s.
Though
enormous
effort
been
devoted
this
field,
it
is
still
far
from
commercialization.
oxidation
reaction
(MOR),
as
a
semi-reaction
DMFCs,
bottleneck
that
restricts
overall
performance
DMFCs.
To
date,
there
intense
debate
on
complex
six-electron
reaction,
but
barely
any
reviews
have
systematically
discussed
topic.
end,
controversies
and
progress
regarding
electrocatalytic
mechanisms,
evaluations
well
design
science
toward
MOR
electrocatalysts
are
summarized.
This
review
also
provides
comprehensive
introduction
recent
development
emerging
with
focus
innovation
alloy,
core-shell
structure,
heterostructure,
single-atom
catalysts.
Finally,
perspectives
future
outlook
mechanisms
provided.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(34)
Published: July 5, 2022
Employing
seawater
splitting
systems
to
generate
hydrogen
can
be
economically
advantageous
but
still
remains
challenging,
particularly
for
designing
efficient
and
high
Cl-
-corrosion
resistant
trifunctional
catalysts
toward
the
oxygen
reduction
reaction
(ORR),
evolution
(OER),
(HER).
Herein,
single
CoNC
with
well-defined
symmetric
CoN4
sites
are
selected
as
atomic
platforms
electronic
structure
tailoring.
Density
function
theory
reveals
that
P-doping
into
lead
formation
of
asymmetric
CoN3
P1
symmetry-breaking
structures,
enabling
affinity
strong
oxygen-containing
intermediates,
moderate
H
adsorption,
weak
adsorption.
Thus,
ORR/OER/HER
activities
stability
optimized
simultaneously
resistance.
The
based
catalyst
boosted
performance
endows
seawater-based
Zn-air
batteries
(S-ZABs)
superior
long-term
over
750
h
allows
operate
continuously
1000
h.
A
self-driven
powered
by
S-ZABs
gives
ultrahigh
H2
production
rates
497
μmol
h-1
.
This
work
is
first
advance
scientific
understanding
competitive
adsorption
mechanism
between
intermediates
from
perspective
structure,
paving
way
synthesis
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: July 22, 2023
Abstract
Electrocatalytic
hydrogen
peroxide
(H
2
O
)
production
via
the
two-electron
oxygen
reduction
reaction
is
a
promising
alternative
to
energy-intensive
and
high-pollution
anthraquinone
oxidation
process.
However,
developing
advanced
electrocatalysts
with
high
H
yield,
selectivity,
durability
still
challenging,
because
of
limited
quantity
easy
passivation
active
sites
on
typical
metal-containing
catalysts,
especially
for
state-of-the-art
single-atom
ones.
To
address
this,
we
report
graphene/mesoporous
carbon
composite
high-rate
high-efficiency
2e
−
catalysis.
The
coordination
pyrrolic-N
-modulates
adsorption
configuration
*OOH
species
provide
kinetically
favorable
pathway
production.
Consequently,
yield
approaches
30
mol
g
−1
h
Faradaic
efficiency
80%
excellent
durability,
yielding
concentration
7.2
L
.
This
strategy
manipulating
reactants
multiple
non-metal
provides
design
efficient
durable
metal-free
electrocatalyst
reduction.