Industrial & Engineering Chemistry Research,
Journal Year:
2025,
Volume and Issue:
64(9), P. 5087 - 5098
Published: Feb. 21, 2025
Gas
bubble
adhesion,
a
ubiquitous
phenomenon
in
electrochemical
gas-evolving
reactions,
reduces
the
hydrogen
evolution
reaction
(HER)
activity
water
electrolysis.
Understanding
dynamics
of
gas
detachment
and
its
dependence
on
force
balance
is
crucial
for
manipulating
departure,
but
it
remains
insufficiently
investigated.
Here,
we
found
that
differ
markedly
between
fluidizable
stationary
electrocatalysts,
with
electrocatalysts
minimizing
adhesion
showing
37-fold
increase
HER
rate
constant.
This
enhancement
attributed
to
accelerated
driven
by
fluidization
effect
electrocatalyst
particles.
Specifically,
transition
from
marks
shift
flat
particulate
model,
introducing
promoting
effects
arising
particle
movement
spin-induced
centrifugal
collision-triggered
coalescence.
Consequently,
measured
approaches
intrinsic
value.
work
highlights
as
an
effective
strategy
eliminate
thereby
exposing
nearly
all
active
sites
electrocatalytic
reactions.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: July 8, 2024
Abstract
Anion
exchange
membrane
(AEM)
water
electrolysis
employing
non-precious
metal
electrocatalysts
is
a
promising
strategy
for
achieving
sustainable
hydrogen
production.
However,
it
still
suffers
from
many
challenges,
including
sluggish
alkaline
evolution
reaction
(HER)
kinetics,
insufficient
activity
and
limited
lifetime
of
ampere-level-current-density
HER.
Here,
we
report
an
efficient
HER
at
industrial-level
current
density
wherein
flexible
WS
2
superstructure
designed
to
serve
as
the
cathode
catalyst
AEM
electrolysis.
The
features
bond-free
van
der
Waals
interaction
among
low
Young’s
modulus
nanosheets
ensure
excellent
mechanical
flexibility,
well
stepped
edge
defect
structure
realize
high
catalytic
favorable
interface
micro-environment.
unique
can
effectively
withstand
impact
high-density
gas-liquid
exchanges
facilitate
mass
transfer,
endowing
long-term
durability
under
industrial-scale
density.
An
electrolyser
containing
this
exhibits
cell
voltage
1.70
V
deliver
constant
1
A
cm
−2
over
1000
h
with
negligible
decay
rate
9.67
μV
−1
.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(19), P. 13527 - 13535
Published: May 1, 2024
Closing
the
carbon
and
nitrogen
cycles
by
electrochemical
methods
using
renewable
energy
to
convert
abundant
or
harmful
feedstocks
into
high-value
C-
N-containing
chemicals
has
potential
transform
global
landscape.
However,
efficient
conversion
avenues
have
date
been
mostly
realized
for
independent
reduction
of
CO2
NO3–.
The
synthesis
more
complex
C–N
compounds
still
suffers
from
low
efficiency
due
inability
find
effective
catalysts.
To
this
end,
here
we
present
amorphous
bismuth–tin
oxide
nanosheets,
which
effectively
reduce
barrier
catalytic
reaction,
facilitating
highly
selective
urea
production.
With
enhanced
adsorption
activation
on
catalyst,
a
coupling
pathway
based
*CO2
rather
than
traditional
*CO
is
realized.
optimized
orbital
symmetry
(*CO2)
(*NO2)
intermediates
promotes
significant
increase
in
Faraday
production
an
outstanding
value
78.36%
at
−0.4
V
vs
RHE.
In
parallel,
selectivity
formation
also
90.41%
95.39%,
respectively.
results
insights
provide
valuable
reference
further
development
new
catalysts
CO2.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(21)
Published: Feb. 10, 2024
Abstract
Green
hydrogen,
derived
from
water
splitting
powered
by
renewable
energy
such
as
solar
and
wind
energy,
provides
a
zero‐emission
solution
crucial
for
revolutionizing
hydrogen
production
decarbonizing
industries.
Catalysts,
particularly
those
utilizing
defect
engineering
involving
the
strategical
introduction
of
atomic‐level
imperfections,
play
vital
role
in
reducing
requirements
enabling
more
sustainable
transition
toward
hydrogen‐based
economy.
Stacking
fault
(SF)
defects
an
important
enhancing
electrocatalytic
processes
reshaping
surface
reactivity,
increasing
active
sites,
improving
reactants/product
diffusion,
regulating
electronic
structure
due
to
their
dense
generation
ability
profound
impact
on
catalyst
properties.
This
review
explores
SF
metal‐based
materials,
covering
synthetic
methods
intentional
applications
production,
including
oxygen
evolution
reaction,
photo‐
overall
splitting,
various
other
reduction
nitrate
carbon
dioxide
reaction.
Finally,
this
addresses
challenges
associated
with
SF‐based
catalysts,
emphasizing
importance
detailed
understanding
properties
catalysts
optimize
performance.
It
comprehensive
overview
processes,
providing
valuable
insights
advancing
technologies.
Inorganic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(14), P. 4080 - 4106
Published: Jan. 1, 2024
This
summary
describes
the
effects
of
wettability,
local
pH,
interfacial
water
structure,
and
electrolyte
composition
on
interface
reactant
compositions,
key
intermediate
adsorption,
reaction
kinetics.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(1), P. 71 - 71
Published: Jan. 17, 2024
In
this
study,
pure
CdO
nanoparticles,
magnetic
Fe3O4
and
Fe3O4-CdO
nanocomposites
were
prepared
via
a
solution
combustion
method
using
cetyltrimethylammonium
bromide
(CTAB)
as
template.
These
nanomaterial
samples
characterized
by
X-ray
diffraction
(XRD),
ultraviolet-visible
diffuse
reflectance
spectroscopy
(UV-vis
DRS),
Fourier-transform
infrared
(FTIR),
Raman
spectroscopy,
photoelectron
microscopy
(XPS),
transmittance
electron
(TEM),
scanning
(SEM)
analysis.
XRD
patterns
confirmed
the
purity
crystalline
nature
of
samples.
FTIR
spectra
observed
metal-oxygen
(M-O)
bond
formation.
UV-vis
DRS
studies
performed
to
investigate
optical
properties
bandgap
energy
determination.
The
surface
morphology
size
Fe3O4,
determined
TEM
SEM
Under
optimum
experimental
conditions,
applied
for
photocatalytic
activity
against
Methylene
blue
dye.
visible
light
irradiation,
nanostructures
showed
an
efficient
degradation
92%
organic
dye
excellent
stability
multiple
cycles
reuse.
