Advanced Sustainable Systems,
Год журнала:
2024,
Номер
8(12)
Опубликована: Авг. 25, 2024
Abstract
The
high
stability
and
persistence
of
nitrates
in
water
poses
a
serious
threat
to
human
health
ecosystems.
To
effectively
reduce
the
nitrate
content
wastewater,
electrochemical
reduction
reaction
(e‐NO
3
RR)
is
widely
recognized
as
an
ideal
treatment
method
due
its
reliability
efficiency.
selection
catalyst
material
plays
decisive
role
e‐NO
RR
performance.
Copper‐based
catalysts,
with
their
ease
acquisition,
activity,
selectivity
for
NH
,
have
emerged
most
promising
candidates
applications.
In
this
paper,
mechanism
first
introduced.
Then
relationship
between
structural
properties
catalytic
performance
copper‐based
catalysts
analyzed
detail
from
four
aspects:
nanomaterials,
oxides,
monoatomic,
bimetallic
materials.
Strategies
constructing
efficient
are
discussed,
including
surface
modulation,
defect
engineering,
heteroatom
doping,
coordination
effects.
Finally,
challenges
prospects
practical
applications
outlined.
Bimetallic/multimetallic
catalysts
for
nitrate
reduction
reaction
(NO3-RR)
have
been
extensively
investigated
benefiting
from
their
synergistic
effects
in
optimizing
various
intermediate
adsorptions;
however,
the
interphasic
monometallic
are
often
overlooked.
Here
we
report
an
synergy
between
electron-rich
Co(OH)2
and
electron-deficient
CoO,
which
asymmetric
charge
distribution
cobalt-based
heterojunction
derived
built-in
electric
field
(BEF)
significantly
accelerates
electron
transfer
lowers
energy
barriers
NO3-RR.
Theoretical
calculations
reveal
that
chemical
affinities
of
Co
atoms
toward
NO3-
NO2-
enhanced
even
adsorption
switches
to
a
spontaneous
process.
Simultaneously,
BEF
Co-based
heterostructures
greatly
reduces
barrier
rate-determining
step
(*NO→*NOH)
Therefore,
resultant
catalyst
exhibits
ampere-level
NO3-RR
performance,
achieving
record
NH3
yield
up
73.9
mg
h-1
cm-2
at
low
potential
-0.2
V
with
Faradaic
efficiency
(FE)
95.6%.
Materials,
Год журнала:
2025,
Номер
18(11), С. 2495 - 2495
Опубликована: Май 26, 2025
Electrocatalytic
nitrate
reduction
to
ammonia
(ENRA)
presents
a
promising
strategy
for
simultaneous
environmental
remediation
and
sustainable
synthesis.
In
this
work,
Cu–Co
bimetallic
catalyst
supported
on
functionalized
reduced
graphene
oxide
(RGO)
was
systematically
designed
achieve
efficient
selective
production.
Surface
oxygen
functional
groups
(GO)
were
optimized
through
alkaline
hydrothermal
treatments,
enhancing
the
anchoring
capacity
metal
active
sites.
Characterization
indicated
successful
formation
of
uniform
heterointerfaces
comprising
metallic
phases,
which
significantly
improved
stability
performance.
Among
studied
compositions,
Cu6Co4/RGO
exhibited
superior
catalytic
activity,
achieving
remarkable
selectivity
99.86%
Faradaic
efficiency
96.54%
at
−0.6
V
(vs.
RHE).
Long-term
electrocatalysis
demonstrated
excellent
durability,
with
over
90%
maintained
production
after
20
h
operation.
situ
FTIR
analysis
revealed
that
introducing
Co
effectively
promoted
water
dissociation,
facilitating
hydrogen
generation
(*H)
accelerating
transformation
intermediates.
This
work
offers
valuable
mechanistic
insights
paves
way
design
highly
electrocatalysts
electrosynthesis.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(44)
Опубликована: Сен. 2, 2024
Abstract
Zn‐based
catalytic
batteries,
recognized
as
eco‐friendly
alternatives,
are
attracting
significant
research
interest
for
their
applications
in
energy
storage,
conversion,
pollutant
degradation,
and
ammonia
synthesis.
This
review
compiles
the
latest
developments
Zn‐nitrogen
oxides
(NO
x
)
covering
various
types
including
Zn‐nitrate,
Zn‐nitric
oxide,
Zn‐nitrite
batteries.
study
explores
electrode
reactions
structural
evolutions
of
these
emphasizing
different
challenges
posed
by
cathodic
reactions.
Advanced
design
strategies
cathode
materials,
such
inhibiting
hydrogen
production,
utilizing
tandem
sites,
enhancing
reactant
enrichment,
presented
evaluated.
These
have
markedly
improved
NO
reduction
performance
driven
progress
Zn‐NO
battery.
The
future
directions
outlined,
highlighting
need
more
efficient
catalysts,
optimization
Zn
anodes,
development
alternative
metal
battery
structure
improvements,
exploration
charging
Addressing
is
crucial
advancing
high‐energy‐density
Advanced Sustainable Systems,
Год журнала:
2024,
Номер
8(12)
Опубликована: Авг. 25, 2024
Abstract
The
high
stability
and
persistence
of
nitrates
in
water
poses
a
serious
threat
to
human
health
ecosystems.
To
effectively
reduce
the
nitrate
content
wastewater,
electrochemical
reduction
reaction
(e‐NO
3
RR)
is
widely
recognized
as
an
ideal
treatment
method
due
its
reliability
efficiency.
selection
catalyst
material
plays
decisive
role
e‐NO
RR
performance.
Copper‐based
catalysts,
with
their
ease
acquisition,
activity,
selectivity
for
NH
,
have
emerged
most
promising
candidates
applications.
In
this
paper,
mechanism
first
introduced.
Then
relationship
between
structural
properties
catalytic
performance
copper‐based
catalysts
analyzed
detail
from
four
aspects:
nanomaterials,
oxides,
monoatomic,
bimetallic
materials.
Strategies
constructing
efficient
are
discussed,
including
surface
modulation,
defect
engineering,
heteroatom
doping,
coordination
effects.
Finally,
challenges
prospects
practical
applications
outlined.
