Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 31, 2025
Ammonia
(NH3)
is
esteemed
for
its
attributes
as
a
carbon-neutral
fuel
and
hydrogen
storage
material,
due
to
high
energy
density,
abundant
content,
notably
higher
liquefaction
temperature
in
comparison
gas.
The
primary
method
the
synthetic
generation
of
NH3
Haber-Bosch
process,
involving
rigorous
conditions
resulting
significant
global
consumption
carbon
dioxide
emissions.
To
tackle
environmental
challenges,
exploration
innovative
green
sustainable
technologies
synthesis
imperative.
Rapid
advances
electrochemical
technology
have
created
fresh
prospects
researchers
realm
environmentally
friendly
synthesis.
Nevertheless,
intricate
intermediate
products
sluggish
kinetics
reactions
impede
progress
(EAS)
technologies.
improve
activity
selectivity
EAS,
which
encompasses
electrocatalytic
reduction
nitrogen
gas,
nitrate,
nitric
oxide,
numerous
electrocatalysts
design
strategies
been
meticulously
investigated.
Here,
this
review
primarily
delves
into
recent
obstacles
EAS
pathways,
examining
methods
boost
yield
rate
current
efficiency
via
multidimensional
structural
optimization,
while
also
exploring
challenges
outlook
EAS.
Advanced Materials,
Год журнала:
2023,
Номер
35(48)
Опубликована: Сен. 22, 2023
Improving
the
selective
ammonia
production
capacity
of
electrocatalytic
nitrate
reduction
reaction
(NO3
RR)
at
ambient
conditions
is
critical
to
future
development
and
industrial
application
electrosynthesis
ammonia.
However,
involves
multi-proton
electron
transfer
as
well
desorption
underutilization
intermediates,
posing
a
challenge
selectivity
NO3
RR.
Here
electrodeposition
site
Co
modulated
by
depositing
Bi
bottom
catalyst,
thus
obtaining
Co+Bi@Cu
NW
catalyst
with
Bi-Co
corridor
structure.
In
50
mm
NO3-
,
exhibits
highest
Faraday
efficiency
≈100%
(99.51%),
an
yield
rate
1858.2
µg
h-1
cm-2
high
repeatability
-0.6
V
versus
reversible
hydrogen
electrode.
Moreover,
change
NO2-
concentration
on
surface
observed
in
situ
reflection
absorption
imaging
intermediates
RR
process
detected
electrochemical
Raman
spectroscopy
together
verify
trapping
effect
It
believed
that
measure
modulating
deposition
loading
element
easy-to-implement
general
method
for
improving
NH3
corresponding
scientific
research
applications.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(16), С. 8540 - 8572
Опубликована: Янв. 1, 2023
Metal–support
interactions
(MSIs)
is
essential
for
the
understanding
of
structure–performance
relationship
and
designing
in
heterogeneous
catalysis
area.
This
review
mainly
summarizes
current
theoretical
experimental
research
MSIs.
Energy & Environmental Science,
Год журнала:
2023,
Номер
16(7), С. 3063 - 3073
Опубликована: Янв. 1, 2023
A
feasible
membrane
electrode
assembly
(MEA)
configuration
is
proposed
for
lithium-mediated
electrochemical
nitrogen
reduction
to
ammonia,
which
shows
the
advantages
of
efficient
gas
transfer,
reduced
solvent
consumption
and
compact
configuration.
Synthesis
of
green
ammonia
(NH3
)
via
electrolysis
nitric
oxide
(NO)
is
extraordinarily
sustainable,
but
multielectron/proton-involved
hydrogenation
steps
as
well
low
concentrations
NO
can
lead
to
poor
activities
and
selectivities
electrocatalysts.
Herein,
it
reported
that
oxygen-defective
TiO2
nanoarray
supported
on
Ti
plate
(TiO2-x
/TP)
behaves
an
efficient
catalyst
for
reduction
NH3
.
In
0.2
m
phosphate-buffered
electrolyte,
such
TiO2-x
/TP
shows
competitive
electrocatalytic
synthesis
activity
with
a
maximum
yield
1233.2
µg
h-1
cm-2
Faradaic
efficiency
92.5%.
Density
functional
theory
calculations
further
thermodynamically
faster
deoxygenation
protonation
processes
(101)
compared
perfect
(101).
And
the
energy
barrier
0.7
eV
potential-determining
step
highlights
greatly
improved
intrinsic
activity.
addition,
Zn-NO
battery
fabricated
Zn
obtain
241.7
while
providing
peak
power
density
0.84
mW
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(27), С. 10117 - 10126
Опубликована: Июнь 26, 2023
Electrocatalytic
reduction
of
nitrate
to
NH3
(NO3RR)
on
Cu
offers
sustainable
production
and
nitrogen
recycling
from
nitrate-contaminated
water.
However,
affords
limited
NO3RR
activity
owing
its
unfavorable
electronic
state
the
slow
proton
transfer
surface,
especially
in
neutral/alkaline
media.
Furthermore,
although
a
synchronous
"NO3RR
collection"
system
has
been
developed
for
nitrate-laden
water,
no
is
designed
natural
water
that
generally
contains
low-concentration
nitrate.
Herein,
we
demonstrate
depositing
nanoparticles
TiO2
support
enables
formation
electron-deficient
Cuδ+
species
(0
<
δ
≤
2),
which
are
more
active
than
Cu0
NO3RR.
TiO2-Cu
coupling
induces
local
electric-field
enhancement
intensifies
adsorption/dissociation
at
interface,
accelerating
Cu.
With
dual
enhancements,
delivers
an
NH3-N
selectivity
90.5%,
mass
41.4
mg-N
h
gCu-1,
specific
377.8
h-1
m-2,
minimal
leaching
(<25.4
μg
L-1)
when
treating
22.5
mg
L-1
NO3--N
-0.40
V,
outperforming
most
reported
Cu-based
catalysts.
A
sequential
collection
based
was
then
proposed,
could
recycle
under
wide
concentration
window
22.5-112.5
rate
209-630
mgN
m-2
h-1.
We
also
demonstrated
this
collect
83.9%
(19.3
lake
RSC Advances,
Год журнала:
2023,
Номер
13(6), С. 3818 - 3834
Опубликована: Янв. 1, 2023
Mesoporous
heterojunction
MOF-derived
α-Fe2O3/ZnO
composites
were
prepared
by
a
simple
calcination
of
α-Fe2O3/ZIF-8
as
sacrificial
template.
The
optical
properties
confirm
that
coupling
both
the
modified
pore
and
n-n
effectively
reduces
possibility
photoinduced
charge
carrier
recombination
under
irradiation.
mesoporous
Fe(25)ZnO
with
25%
loading
α-Fe2O3
exhibited
best
performance
in
MB
degradation,
up
to
∼100%
after
150
minutes
irradiation,
higher
than
pristine
ZnO
α-Fe2O3.
Furthermore,
three
cycles
reusability,
still
showed
an
excellent
stability
95.42%
for
degradation
MB.
proposed
photocatalytic
mechanism
corresponds
system.
This
study
provides
valuable
reference
preparing
metal
oxides
system
enhance
photodegradation.
