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.
Electroreduction
of
nitrite
(NO2-
)
to
valuable
ammonia
(NH3
offers
a
sustainable
and
green
approach
for
NH3
synthesis.
Here,
Cu3
P@TiO2
heterostructure
is
rationally
constructed
as
an
active
catalyst
selective
NO2-
-to-NH3
electroreduction,
with
rich
nanosized
P
anchored
on
TiO2
nanoribbon
array
Ti
plate
(Cu3
/TP).
When
performed
in
the
0.1
m
NaOH
NaNO2
,
/TP
electrode
obtains
large
yield
1583.4
µmol
h-1
cm-2
high
Faradaic
efficiency
97.1%.
More
importantly,
also
delivers
remarkable
long-term
stability
50
h
electrolysis.
Theoretical
calculations
indicate
that
intermediate
adsorption/conversion
processes
interfaces
are
synergistically
optimized,
substantially
facilitating
conversion
.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(18), С. 6717 - 6727
Опубликована: Янв. 1, 2024
Cu–Fe–N–C
demonstrates
excellent
electrocatalytic
activity
for
nitrate
reduction
by
optimizing
intermediate
adsorption
and
generating
a
substantial
supply
of
H*
the
thorough
hydrogenation
N-containing
intermediates.
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.
