Abstract
Sustainable
ammonia
synthesis,
a
key
focus
in
electrochemistry,
has
seen
significant
advancements
with
the
emergence
of
Metal‐Organic
Frameworks
(MOFs).
This
review
provides
comprehensive
analysis
recent
strides
MOF‐based
materials
for
green
production,
reflecting
urgency
to
develop
eco‐friendly
and
energy‐efficient
chemical
commodities.
It
explores
reaction
mechanisms,
emphasizing
importance
structure‐performance
relationships
MOF
optimization
design
electrocatalysts,
including
metal
node
engineering
hybrid
materials.
The
also
highlights
in‐situ
characterization
techniques
that
are
crucial
understanding
catalytic
activity.
establishes
correlation
between
features,
synthesis
methods,
material
performance,
showcasing
their
potential
catalysis.
Finally,
it
identifies
challenges
future
directions
MOFs
aiming
inspire
innovation
towards
sustainable
economically
viable
processes.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 11, 2024
Abstract
Electrochemical
nitrate
reduction
reaction
(NO
3
RR)
is
a
promising
approach
to
realize
ammonia
generation
and
wastewater
treatment.
However,
the
transformation
from
NO
−
NH
involves
multiple
proton‐coupled
electron
transfer
processes
by‐products
2
,
H
etc.),
making
high
selectivity
challenge.
Herein,
two‐phase
nanoflower
P‐Cu/Co(OH)
electrocatalyst
consisting
of
P‐Cu
clusters
P‐Co(OH)
nanosheets
designed
match
two‐step
tandem
process
)
more
compatible,
avoiding
excessive
accumulation
optimizing
whole
reaction.
Focusing
on
initial
2e
process,
inhibited
*
desorption
Cu
sites
in
gives
rise
appropriate
released
electrolyte.
Subsequently,
exhibits
superior
capacity
for
trapping
transforming
desorbed
during
latter
6e
due
thermodynamic
advantage
contributions
active
hydrogen.
In
1
m
KOH
+
0.1
leads
yield
rate
42.63
mg
h
cm
Faradaic
efficiency
97.04%
at
−0.4
V
versus
reversible
hydrogen
electrode.
Such
well‐matched
achieves
remarkable
synthesis
performance
perspective
catalytic
reaction,
offering
novel
guideline
design
RR
electrocatalysts.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 11, 2025
Replacing
the
oxygen
evolution
reaction
(OER)
in
CO2
electrolysis
with
an
energetically
and
economically
favorable
alternative
is
very
promising.
Yet,
understanding
paired
organic
oxidation
environment
for
reduction
particularly
challenging,
as
monitoring
multiple
side
reactions
problematic.
Herein,
we
examined
of
ethylene
glycol
(EG),
one
simplest
polyols,
a
model
on
series
nickel
oxyhydroxide
catalysts
(β-NiMxOOH,
M
=
Ni,
Co,
Fe,
Cu).
Using
situ
techniques,
including
surface-enhanced
infrared
absorption
spectroscopy
(SEIRAS)
differential
electrochemical
mass
spectrometry
(DEMS),
together
various
ex
approaches,
obtained
potential-resolved
quantitative
information
comprising
OER,
overoxidation
to
CO/CO2,
catalyst
dissolution,
from
electrolyte
decarbonation.
Many
factors
impurity
cations,
pH,
potential
can
substantially
influence
product
distribution
reactions.
Such
influences
are
nearly
identical
both
electrocatalytic
chemical-electrochemical
pathways.
The
optimized
system
achieve
stable
high
Faradaic
efficiencies
formate
(∼100%),
glycolaldehyde
(∼86%),
glycolate
(∼66%),
respectively.
Importantly,
easily
suffer
higher
energy
consumption
than
conventional
counterpart,
provided
unregulated.
Yet
modulated
consumed
21.1%
less
even
when
separation
was
considered.
This
work
reveals
unique
electrolysis,
opening
up
opportunities
designing
efficient
systems
real-life
applications.
Chemistry - Methods,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 27, 2025
High‐performance
gas
diffusion
electrodes
(GDEs)
are
crucial
for
large‐scale
CO
2
‐electrolysis.
During
initial
electrode
polarization,
the
startup
procedure
plays
a
critical
role
in
determining
subsequent
performance
of
electrodes.
This
phase
influences
course
and
rate
catalyst
formation,
as
well
electrode‐wetting,
must
be
carefully
managed
to
prevent
damage.
Maintaining
ideal
conditions
despite
added
constraints
complexity
during
scale‐up
requires
in‐depth
understanding
these
operational
phases.
However,
progress
is
limited
by
current
inability
rapidly
analyze
product
gases.
To
address
this,
we
present
modified
chromatography
(GC)
method
capable
sampling
every
30
seconds
within
timeframe,
maintaining
full
data
quality.
was
compared
combined
with
online
mass
spectrometry
(MS),
which
faster
but
comes
calibration
challenges
spectral
overlaps.
We
explore
strengths,
limitations,
potential
synergies
both
techniques
electrolyzer
steps
on
GDEs
different
layer
designs.
Experimental
results
reveal
that
concentration
gradients
additional
electrode‐wetting
under
load
primarily
occur
first
two
minutes.
Both
fast‐GC
MS
methods
effective
analysis
this
timeframe.
demonstrate
fragmentation
signal
corrections
using
simultaneous
GC
data.
