Nature Communications,
Journal Year:
2021,
Volume and Issue:
12(1)
Published: Nov. 22, 2021
Efficient
water
electrolyzers
are
constrained
by
the
lack
of
low-cost
and
earth-abundant
hydrogen
evolution
reaction
(HER)
catalysts
that
can
operate
at
industry-level
conditions
be
prepared
with
a
facile
process.
Here
we
report
self-standing
MoC-Mo2C
catalytic
electrode
via
one-step
electro-carbiding
approach
using
CO2
as
feedstock.
The
outstanding
HER
performances
low
overpotentials
500
mA
cm-2
in
both
acidic
(256
mV)
alkaline
electrolytes
(292
mV),
long-lasting
lifetime
over
2400
h
(100
d),
high-temperature
performance
(70
oC)
due
to
hydrophilic
porous
surface,
intrinsic
mechanical
strength
self-grown
MoC
(001)-Mo2C
(101)
heterojunctions
have
ΔGH*
value
-0.13
eV
condition,
energy
barrier
1.15
for
dissociation
solution.
preparation
large
(3
cm
×
11.5
cm)
demonstrates
possibility
scaling
up
this
process
prepare
various
carbide
electrodes
rationally
designed
structures,
tunable
compositions,
favorable
properties.
Nano Convergence,
Journal Year:
2021,
Volume and Issue:
8(1)
Published: Feb. 11, 2021
As
a
promising
substitute
for
fossil
fuels,
hydrogen
has
emerged
as
clean
and
renewable
energy.
A
key
challenge
is
the
efficient
production
of
to
meet
commercial-scale
demand
hydrogen.
Water
splitting
electrolysis
pathway
achieve
in
terms
energy
conversion
storage
which
catalysis
or
electrocatalysis
plays
critical
role.
The
development
active,
stable,
low-cost
catalysts
electrocatalysts
an
essential
prerequisite
achieving
desired
electrocatalytic
from
water
practical
use,
constitutes
central
focus
this
review.
It
will
start
with
introduction
performance
evaluation
various
activity,
stability,
efficiency.
This
be
followed
by
outlining
current
knowledge
on
two
half-cell
reactions,
evolution
reaction
(HER)
oxygen
(OER),
mechanisms
alkaline
acidic
media.
Recent
advances
design
preparation
nanostructured
noble-metal
non-noble
metal-based
discussed.
New
strategies
insights
exploring
synergistic
structure,
morphology,
composition,
active
sites
increasing
activity
stability
HER
OER
highlighted.
Finally,
future
challenges
perspectives
robust
towards
also
outlined.
Chemical Reviews,
Journal Year:
2020,
Volume and Issue:
120(21), P. 12044 - 12088
Published: June 26, 2020
Single-atom
alloys
(SAAs)
play
an
increasingly
significant
role
in
the
field
of
single-site
catalysis
and
are
typically
composed
catalytically
active
elements
atomically
dispersed
more
inert
selective
host
metals.
SAAs
have
been
shown
to
catalyze
a
range
industrially
important
reactions
electro-,
photo-,
thermal
studies.
Due
unique
geometry
SAAs,
location
transition
state
binding
site
reaction
intermediates
often
decoupled,
which
can
enable
both
facile
dissociation
reactants
weak
intermediates,
two
key
factors
for
efficient
catalysis.
Often,
this
results
deviations
from
metal
scaling
relationships
that
limit
conventional
catalysts.
also
offer
reduced
susceptibility
CO
poisoning,
cost
savings
precious
usage,
opportunities
bifunctional
mechanisms
via
spillover,
higher
resistance
deactivation
by
coking
plagues
many
industrial
In
review,
we
begin
introducing
describe
how
model
systems
nanoparticle
catalysts
be
prepared
characterized.
We
then
review
all
available
SAA
literature
on
per
basis
before
concluding
with
description
general
properties
new
class
heterogeneous
presenting
future
research
development.
Chemical Reviews,
Journal Year:
2020,
Volume and Issue:
121(2), P. 649 - 735
Published: July 15, 2020
The
successful
synthesis
of
noble-metal
nanocrystals
with
controlled
shapes
offers
many
opportunities
to
not
only
maneuver
their
physicochemical
properties
but
also
optimize
figures
merit
in
a
wide
variety
applications.
In
particular,
heterogeneous
catalysis
and
surface
science
have
benefited
enormously
from
the
availability
this
new
class
nanomaterials
as
atomic
structure
presented
on
nanocrystal
is
ultimately
determined
by
its
geometric
shape.
immediate
advantages
may
include
significant
enhancement
catalytic
activity
and/or
selectivity
substantial
reduction
materials
cost
while
providing
well-defined
model
system
for
mechanistic
study.
With
focus
monometallic
system,
review
article
provides
comprehensive
account
recent
progress
development
shapes,
addition
remarkable
performance
large
number
electrocatalytic
reactions.
We
hope
that
impetus
roadmap
next-generation
catalysts
vital
broad
range
industrial
ACS Energy Letters,
Journal Year:
2022,
Volume and Issue:
7(3), P. 1043 - 1065
Published: Feb. 26, 2022
Solar
H2
production
is
considered
as
a
potentially
promising
way
to
utilize
solar
energy
and
tackle
climate
change
stemming
from
the
combustion
of
fossil
fuels.
Photocatalytic,
photoelectrochemical,
photovoltaic–electrochemical,
thermochemical,
photothermal
catalytic,
photobiological
technologies
are
most
intensively
studied
routes
for
production.
In
this
Focus
Review,
we
provide
comprehensive
review
these
technologies.
After
brief
introduction
principles
mechanisms
technologies,
recent
achievements
in
summarized,
with
particular
focus
on
high
solar-to-H2
(STH)
conversion
efficiency
achieved
by
each
route.
We
then
comparatively
analyze
evaluate
based
metrics
STH
efficiency,
durability,
economic
viability,
environmental
sustainability,
aiming
assess
commercial
feasibility
compared
current
industrial
processes.
Finally,
challenges
prospects
future
research
presented.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: May 13, 2022
Abstract
High-entropy
alloys
have
received
considerable
attention
in
the
field
of
catalysis
due
to
their
exceptional
properties.
However,
few
studies
hitherto
focus
on
origin
outstanding
performance
and
accurate
identification
active
centers.
Herein,
we
report
a
conceptual
experimental
approach
overcome
limitations
single-element
catalysts
by
designing
FeCoNiXRu
(X:
Cu,
Cr,
Mn)
system
with
various
sites
that
different
adsorption
capacities
for
multiple
intermediates.
The
electronegativity
differences
between
mixed
elements
HEA
induce
significant
charge
redistribution
create
highly
Co
Ru
optimized
energy
barriers
simultaneously
stabilizing
OH
*
H
intermediates,
which
greatly
enhances
efficiency
water
dissociation
alkaline
conditions.
This
work
provides
an
in-depth
understanding
interactions
specific
opens
up
fascinating
direction
breaking
scaling
relation
issues
multistep
reactions.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(36)
Published: July 23, 2021
Atomically
dispersed
metal
catalysts
with
well-defined
structures
have
been
the
research
hotspot
in
heterogeneous
catalysis
because
of
their
high
atomic
utilization
efficiency,
outstanding
activity,
and
selectivity.
Dual-atomic-site
(DASCs),
as
an
extension
single-atom
(SACs),
recently
drawn
surging
attention.
The
DASCs
possess
higher
loading,
more
sophisticated
flexible
active
sites,
offering
chance
for
achieving
better
catalytic
performance,
compared
SACs.
In
this
review,
recent
advances
on
how
to
design
new
enhancing
energy
will
be
highlighted.
It
start
classification
marriage
two
kinds
homonuclear
heteronuclear
according
configuration
sites.
Then,
state-of-the-art
characterization
techniques
discussed.
Different
synthetic
methods
applications
various
reactions,
including
oxygen
reduction
reaction,
carbon
dioxide
monoxide
oxidation
others
followed.
Finally,
major
challenges
perspectives
provided.
Chemical Reviews,
Journal Year:
2020,
Volume and Issue:
121(2), P. 736 - 795
Published: Sept. 9, 2020
Precise
control
over
the
size,
shape,
composition,
structure,
and
crystal
phase
of
random
alloy
intermetallic
nanocrystals
has
been
intensively
explored
in
technologically
important
applications
recent
years.
Different
from
monometallic
other
types
structural
such
as
core-shell
heterostructured
nanocrystals,
well-defined
multimetallic
exhibit
unique
intriguing
physicochemical
properties,
serving
ideal
models
for
benefiting
structure-to-property
studies.
As
such,
have
attracted
extensive
attention
interest
scientific
research
shown
huge
potential
various
fields.
In
this
review,
we
focus
specifically
on
summarizing
synthetic
principles
strategies
developed
to
form
with
enhanced
performance.
Some
representative
examples
are
purposely
selected
emphasizing
basic
concepts
mechanistic
understanding.
We
then
highlight
fascinating
properties
widespread
electrocatalysis,
heterogeneous
catalysis,
optical
photocatalysis,
well
magnetism
conclude
review
by
addressing
prospects
current
challenges
controlled
synthesis
nanocrystals.
