ACS Applied Nano Materials,
Год журнала:
2023,
Номер
6(19), С. 18238 - 18246
Опубликована: Окт. 4, 2023
At
present,
a
variety
of
catalysts
have
been
studied
and
used
for
the
electrocatalytic
reduction
nitrate.
However,
it
is
still
great
challenge
to
improve
selectivity
nitrate
reaction
(NO3–RR)
catalyst
ammonia
reduce
activity
competitive
reaction.
Herein,
two-dimensional
CuOx
nanosheets
with
abundant
oxygen
vacancy
defects
were
in
situ
grown
on
Cu
nanoparticles
construct
Cu/2D-CuOx
composite
nanomaterials
as
electrocatalysts.
The
(2D)
nanosheet
morphology
facilitated
exposure
active
sites
promoted
mass/charge
transfer
process
during
electrocatalysis.
As
result,
synergistic
effect
2D
nanosheet-like
structure
surface
endows
superior
performance
reaction,
achieving
high
(97.56%)
NH4+
yield
(1476
μg
h–1
mg–1).
Advanced Materials,
Год журнала:
2023,
Номер
36(17)
Опубликована: Июнь 9, 2023
Natural
nitrogen
cycle
has
been
severely
disrupted
by
anthropogenic
activities.
The
overuse
of
N-containing
fertilizers
induces
the
increase
nitrate
level
in
surface
and
ground
waters,
substantial
emission
oxides
causes
heavy
air
pollution.
Nitrogen
gas,
as
main
component
air,
used
for
mass
ammonia
production
over
a
century,
providing
enough
nutrition
agriculture
to
support
world
population
increase.
In
last
decade,
researchers
have
made
great
efforts
develop
processes
under
ambient
conditions
combat
intensive
energy
consumption
high
carbon
associated
with
Haber-Bosch
process.
Among
different
techniques,
electrochemical
reduction
reaction
(NO
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(26)
Опубликована: Апрель 29, 2023
Electrochemical
conversion
of
nitrate
(NO3-
)
into
ammonia
(NH3
represents
a
potential
way
for
achieving
carbon-free
NH3
production
while
balancing
the
nitrogen
cycle.
Herein
we
report
high-performance
Cu
nanosheets
catalyst
which
delivers
partial
current
density
665
mA
cm-2
and
yield
rate
1.41
mmol
h-1
in
flow
cell
at
-0.59
V
vs.
reversible
hydrogen
electrode.
The
showed
high
stability
700
h
with
Faradaic
efficiency
≈88
%
365
.
In
situ
spectroscopy
results
verify
that
are
derived
from
as-prepared
CuO
under
electrochemical
NO3-
reduction
reaction
conditions.
measurements
functional
theory
calculations
indicate
performance
is
attributed
to
tandem
interaction
Cu(100)
Cu(111)
facets.
NO2-
generated
on
facets
subsequently
hydrogenated
facets,
thus
catalysis
promotes
crucial
hydrogenation
*NO
*NOH
production.
Inorganic Chemistry Frontiers,
Год журнала:
2023,
Номер
10(12), С. 3489 - 3514
Опубликована: Янв. 1, 2023
Ammonia
(NH3)
is
an
essential
raw
material
in
the
production
of
fertilizers
and
a
promising
carbon-free
energy
carrier,
however,
its
synthesis
still
depends
on
energy-
capital-intensive
Haber–Bosch
process.
Recently,
electrochemical
N2
reduction
reaction
has
attracted
significant
interest
as
emerging
method
for
NH3
under
ambient
conditions.
However,
limited
solubility
aqueous
electrolyte
strong
NN
bonds
result
low
yield
rate,
inferior
faradaic
efficiency
unsatisfactory
selectivity,
impeding
further
practical
application.
Considering
high
water
nitrate
(NO3−),
NO3−
(NO3−RR)
become
fascinating
route
achieving
sustainable
NH3,
enormous
progress
been
made
this
field.
As
consequence,
review
discusses
mechanism
systematically
summarizes
recent
development
electrocatalysts
NO3−RR,
including
noble-metal-based
materials,
single-atom
metal
catalysts,
transition-metal-based
catalysts.
Diverse
design
strategies
catalysts
to
boost
NO3−RR
performance,
such
defect
engineering,
rational
structure
design,
strain
engineering
constructing
heterostructures,
are
discussed.
This
followed
by
illustration
how
robust
understanding
optimization
affords
fundamental
insights
into
efficiency,
selectivity
electrocatalysts.
Finally,
we
conclude
with
future
perspectives
critical
issues,
challenges
research
directions
high-efficiency
selective
NH3.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(13), С. 6814 - 6819
Опубликована: Янв. 1, 2023
In
single
atoms
confined
in
amorphous
MoO
3
(In
1
/a-MoO
)
are
reported
to
be
an
efficient
catalyst
for
NO
electroreduction
NH
,
attributed
the
ability
of
single-site
inhibit
hydrogen
evolution
and
optimize
NO-to-NH
hydrogenation
energetics.
Interdisciplinary materials,
Год журнала:
2024,
Номер
3(2), С. 245 - 269
Опубликована: Фев. 28, 2024
Abstract
The
electrochemical
nitrate
reduction
reaction
(NO
3
RR)
holds
promise
for
ecofriendly
removal.
However,
the
challenge
of
achieving
high
selectivity
and
efficiency
in
electrocatalyst
systems
still
significantly
hampers
mechanism
understanding
large‐scale
application.
Tandem
catalysts,
comprising
multiple
catalytic
components
working
synergistically,
offer
promising
potential
improving
NO
RR.
This
review
highlights
recent
progress
designing
tandem
catalysts
RR,
including
noble
metal‐related
system,
transition
metal
electrocatalysts,
pulsed
electrocatalysis
strategies.
Specifically,
optimization
active
sites,
interface
engineering,
synergistic
effects
between
catalyst
components,
various
situ
technologies,
theory
simulations
are
discussed
detail.
Challenges
opportunities
development
scaling
up
RR
further
discussed,
such
as
stability,
durability,
mechanisms.
By
outlining
possible
solutions
future
design,
this
aims
to
open
avenues
efficient
comprehensive
insights
into
mechanisms
energy
sustainability
environmental
safety.
eScience,
Год журнала:
2024,
Номер
4(6), С. 100272 - 100272
Опубликована: Апрель 26, 2024
Strong
metal−support
interaction
(SMSI),
namely
the
strong
electronic
and
structural
between
metal
nanoparticles
supports,
one
of
most
typical
synergetic
catalytic
effects
in
composite
catalysts,
has
been
found
critically
important
design
catalyst
for
thermocatalysis
past.
Recently,
however,
great
progress
SMSI-based
made
electrocatalysis,
such
as
electrocatalyst
electrocatalytic
mechanism
investigations.
To
better
understand
nature
effect
assisting
further
development
electrocatalysts,
a
comprehensive
in-depth
overview
highlighting
discussing
recent
advances
SMSI
electrocatalysis
is
necessary
highly
desirable
but
still
absent.
Herein,
this
review
firstly
presents
various
strategies
designing
constructing
catalysts
featuring
SMSI.
Further
from
perspectives
characterization
techniques
towards
electron
structure,
local
interfacial
morphological
features
active
sites
have
summarized
detail.
Importantly,
single-
bi-functional
electrocatalysts
effects,
key
roles
during
reactions
are
emphasized.
Finally,
challenges
prospects
discussed
out-looked
to
highlight
remaining
issues
future
electrocatalysts.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(16), С. 7208 - 7216
Опубликована: Апрель 14, 2024
Electrocatalytic
nitrate
reduction
to
ammonia
(NITRR)
offers
an
attractive
solution
for
alleviating
environmental
concerns,
yet
in
neutral
media,
it
is
challenging
as
a
result
of
the
reliance
on
atomic
hydrogen
(H*)
supply
by
breaking
stubborn
HO-H
bond
(∼492
kJ/mol)
H
