Abstract
Hydrogen,
a
clean
resource
with
high
energy
density,
is
one
of
the
most
promising
alternatives
to
fossil.
Proton
exchange
membrane
water
electrolyzers
are
beneficial
for
hydrogen
production
because
their
current
facile
operation,
and
gas
purity.
However,
large‐scale
application
electrochemical
splitting
acidic
electrolytes
severely
limited
by
sluggish
kinetics
anodic
reaction
inadequate
development
corrosion‐
highly
oxidation‐resistant
anode
catalysts.
Therefore,
catalysts
excellent
performance
long‐term
durability
must
be
developed
oxygen
evolution
reactions
(OER)
in
media.
This
review
comprehensively
outlines
three
commonly
employed
strategies,
namely,
defect,
phase,
structure
engineering,
address
challenges
within
OER,
while
also
identifying
existing
limitations.
Accordingly,
correlation
between
material
design
strategies
catalytic
discussed
terms
contribution
activity
stability.
In
addition,
various
nanostructures
that
can
effectively
enhance
catalyst
at
mesoscale
summarized
from
perspective
engineering
technology,
thus
providing
suitable
satisfy
industrial
requirements.
Finally,
future
outlook
area
OER
presented.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(14)
Опубликована: Фев. 16, 2024
Abstract
The
acidic
electrochemical
CO
2
reduction
reaction
(CO
RR)
for
direct
formic
acid
(HCOOH)
production
holds
promise
in
meeting
the
carbon‐neutral
target,
yet
its
performance
is
hindered
by
competing
hydrogen
evolution
(HER).
Understanding
adsorption
strength
of
key
intermediates
electrolyte
indispensable
to
favor
RR
over
HER.
In
this
work,
high‐density
Sn
single
atom
catalysts
(SACs)
were
prepared
and
used
as
catalyst,
reveal
pH‐dependent
coverage
*CO
−
intermediatethat
enables
enhanced
towards
HCOOH
production.
At
pH=3,
SACs
could
deliver
a
high
Faradaic
efficiency
(90.8
%)
formation
corresponding
partial
current
density
up
−178.5
mA
cm
−2
.
detailed
situ
attenuated
total
reflection
Fourier
transform
infrared
(ATR‐FTIR)
spectroscopic
studies
that
favorable
alkaline
microenvironment
formed
near
surface
SACs,
even
electrolyte.
More
importantly,
intermediate
unravelled
which
turn
affects
competition
between
HER
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(20), С. 14260 - 14266
Опубликована: Май 7, 2024
The
electrochemical
CO2
reduction
reaction
by
copper-based
catalysts
features
a
promising
approach
to
generate
value-added
multicarbon
(C2+)
products.
However,
due
the
unfavored
formation
of
oxygenate
intermediates
on
catalyst
surface,
selectivity
C2+
alcohols
like
ethanol
remains
unsatisfactory
compared
that
ethylene.
bifurcation
point
(i.e.,
CH2═CHO*
intermediate
adsorbed
Cu
via
Cu–O–C
linkage)
is
critical
product
selectivity,
whereas
subsequent
cleavage
Cu–O
or
O–C
bond
determines
ethylene
pathway.
Inspired
hard–soft
acid–base
theory,
in
this
work,
we
demonstrate
an
electron
delocalization
tuning
strategy
nitrene
surface
functionalization
approach,
which
allows
weakening
and
cleaving
CH2═CHO*,
as
well
accelerating
hydrogenation
C═C
along
As
result,
nitrene-functionalized
exhibited
much-enhanced
Faradaic
efficiency
45%
with
peak
partial
current
density
406
mA·cm–2,
substantially
exceeding
unmodified
amide-functionalized
Cu.
When
assembled
membrane
electrode
assembly
electrolyzer,
presented
stable
CO2-to-ethanol
conversion
for
>300
h
at
industrial
400
mA·cm–2.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(12), С. 6295 - 6321
Опубликована: Янв. 1, 2024
Developing
sophisticated
strategies
to
stabilize
oxidative
metal
catalysts
based
on
the
correlation
between
dynamic
oxidation
state
and
product
profile
is
favorable
for
efficient
electrochemical
CO
2
conversion.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(15)
Опубликована: Фев. 12, 2024
Abstract
Electroreduction
of
CO
2
to
C
2+
products
provides
a
promising
strategy
for
reaching
the
goal
carbon
neutrality.
However,
achieving
high
selectivity
at
current
density
remains
challenge.
In
this
work,
we
designed
and
prepared
multi‐sites
catalyst,
in
which
Pd
was
atomically
dispersed
Cu
(Pd−Cu).
It
found
that
Pd−Cu
catalyst
had
excellent
performance
producing
from
electroreduction.
The
Faradaic
efficiency
(FE)
could
be
maintained
approximately
80.8
%,
even
0.8
A
cm
−2
least
20
hours.
addition,
FE
above
70
%
1.4
.
Experiments
functional
theory
(DFT)
calculations
revealed
three
distinct
catalytic
sites.
These
active
sites
allowed
efficient
conversion
,
water
dissociation,
conversion,
ultimately
leading
yields
products.
Abstract
Solar‐driven
carbon
dioxide
(CO
2
)
methanation
holds
significant
research
value
in
the
context
of
emission
reduction
and
energy
crisis.
However,
this
eight‐electron
catalytic
reaction
presents
substantial
challenges
activity
selectivity.
In
regard,
researchers
have
conducted
extensive
exploration
achieved
developments.
This
review
provides
an
overview
recent
advances
efficient
selective
photocatalytic
CO
methanation.
It
begins
by
discussing
fundamental
principles
detail,
analyzing
strategies
for
improving
efficiency
conversion
to
CH
4
comprehensively.
Subsequently,
it
outlines
applications
advanced
characterization
methods
Finally,
highlights
prospects
opportunities
area,
aiming
inspire
into
high‐value
shed
light
on
mechanisms.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 24, 2025
Ethylene
glycol,
a
widely
used
chemical,
has
large
global
capacity
exceeding
40
million
tons
per
year.
Nevertheless,
its
production
is
heavily
reliant
on
fossil
fuels,
resulting
in
substantial
CO2
emissions.
Herein,
we
report
an
approach
for
electrochemically
producing
ethylene
glycol
from
biomass
glycerol.
This
process
involves
glycerol
electrooxidation
to
glycolaldehyde
at
anode,
which
subsequently
electro-reduced
cathode.
While
the
anode
reaction
been
reported,
cathode
remains
challenge.
An
electrodeposited
electrode
with
metallic
Cu
catalyst
enables
us
achieve
glycolaldehyde-to-ethylene
conversion
exceptional
faradaic
efficiency
of
about
80%.
Experimental
and
theoretical
studies
reveal
that
facilitates
C=O
activation,
promoting
hydrogenation
into
glycol.
We
further
assemble
zero-gap
electrolyzer
demonstrate
electrosynthesis
give
decent
rate
1.32
mmol
cm–2
h–1
under
3.48
V
cell
voltage.
The
carbon
intensity
assessment
based
valid
assumption
reveals
our
strategy
may
reduce
emissions
by
over
80
annually
compared
conventional
fuel
routes.
utilized
produced
annually,
typically
made
high
Here,
authors
electrochemical
method
produce
glycerol,
offering
more
sustainable,
low-emission
alternative.
