Electro‐Reconstructed Transition Metal Electrodes for Coupled‐Upgrading of Nitrate Pollution and Waste Poly(Ethylene Terephthalate) Plastics
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 28, 2025
Abstract
Two
unrelated
forms
of
pollution,
nitrate‐containing
wastewater
and
waste
poly(ethylene
terephthalate)
(PET)
plastics,
can
be
converted
into
high‐value
chemicals
by
electrochemical
reduction
oxidation
reactions.
Herein,
coupled
electrocatalysis
is
used
for
the
co‐production
ammonia
(NH
3
)
formic
acid
(FA)
with
a
cathode
formed
reconstructing
Co
on
copper
foam
(R‐Co/CF)
as
catalyst
nitrate
reaction
(NO
RR)
an
anode
NiCo
nickel
(R‐NiCo/NF)
ethylene
glycol
(EGOR).
The
Faraday
efficiency
R‐Co/CF
96.2%
that
R‐NiCo/NF
catalysts
98.2%.
By
coupling
NO
RR
PET
hydrolysate
reaction,
cell
voltage
required
at
current
density
50
mA
cm
−2
202
mV
lower
than
traditional
electrolytic
system,
indicating
electrocatalytic
upcycling
plastics
energy‐saving
cost‐effective
strategy
producing
value‐added
chemicals.
Techno‐economic
analysis
indicates
compared
RR//OER
RR//PET
system
save
2.8
×
10
kW
h
−1
in
electricity
generate
≈6
900
USD
revenue
per
tonne
NH
.
Язык: Английский
Tailoring Electronic and Morphology Features of Iron‐Doped Ni2P Nanoflowers for Enhanced Ammonia Electrosynthesis in Solid Electrolyte Reactors
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
Abstract
Electrochemical
nitrate
(NO
3
−
)
reduction
to
ammonia
(NH
presents
a
promising
route
for
both
wastewater
treatment
and
generation
but
still
suffers
from
sluggish
catalytic
activity,
insufficient
mass
transfer,
the
reliance
on
high‐concentration
supporting
electrolytes.
This
work
reports
an
innovative
efficient
electrosynthesis
reactor
by
integrating
self‐assembled
iron‐doped
Ni
2
P
(Fe‐Ni
P/NF)
nanoflower
cathode
with
solid‐electrolyte
(SE).
The
SE
design
eliminates
need
electrolytes,
providing
highly
ion‐conducting
pathway
enabling
direct
production
of
NH
NO
.
Through
tailoring
electronic
surface
characteristics
Fe‐Ni
P/NF,
this
achieves
complete
reduction,
96.7%
selectivity,
81.8%
faradaic
efficiency
concentration
100
m
at
current
density
mA
−2
Density
functional
theory
(DFT)
calculations
reveal
that
phosphating
Fe
doping
synergistically
enhance
adsorption
increase
availability
active
hydrogen,
thus
favoring
low
energy
barrier
0.695
eV.
Additionally,
superhydrophilicity
P/NF
catalyst
promotes
transfer
facilitating
electrolyte
access
ensuring
rapid
gas
bubble
release.
study
provides
sustainable
scalable
method
converting
‐laden
into
valuable
products.
Язык: Английский
Phosphorus‐Modulated Cobalt Nanosheets with Confined Metal Defects for Enhanced Kinetics in Nitrite‐Glycerol Co‐Electrolysis
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 27, 2025
Abstract
Exploring
advanced
electrocatalysts
for
the
paired
electrolysis
of
nitrite
reduction
reaction
(NO
2
RR)
and
glycerol
oxidation
(GOR)
is
significance
co‐production
value‐added
chemicals,
but
remains
a
great
challenge.
Herein,
novel
phosphorus‐modulated
cobalt
nanosheet
with
low‐coordination
metallic
sites
(P
3
‐Co)
developed
as
an
electrocatalyst
efficient
nitrite‐glycerol
co‐electrolysis.
The
membrane
electrode
assembled
NO
RR‖GOR
electrolyzer
realizes
promising
operation
performance
high
Faradaic
efficiencies
yields
NH
(98.2%,
29.3
mg
h
−1
cm
−2
)
formate
(93.4%,
85.7
at
1.5
V,
well
superior
catalytic
stability
over
long‐term
300
100
mA
.
in
situ
characterizations
theoretical
calculations
are
employed
to
reveal
origin
intrinsic
activity
P
‐Co,
suggesting
that
metal
Co
defects
P‐modulation
beneficial
optimizing
electronic
structure
adsorption/activation
barriers
N‐containing
intermediates
accelerated
conversion
kinetics
both
GOR
RR.
This
work
offers
guidance
exploiting
highly‐active
generation
high‐value‐added
products.
Язык: Английский
Enabling High Performance in a Positive Potential of Nitrate‐to‐Ammonia Electrocatalysis Over Mesoporous Core@Shell Cu2O/Cu@PdCu Nanozyme
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 2, 2025
Electrocatalytic
tandem
nitrate
reduction
to
ammonia
(NO3
--to-NH3)
offers
a
promising
pathway
for
energy
and
environmental
sustainability.
Although
considerable
efforts
have
been
presented
modulate
the
reaction
pathways
enhanced
NO3
--to-NH3
electrocatalysis,
these
advances
often
require
relatively
high
overpotentials
balance
yield
rate
selectivity
of
NH3,
resulting
in
remarkable
inefficiency.
Inspired
by
enzyme
catalysis
nature,
herein
enzyme-like
electrocatalyst
is
designed
consisting
core
Cu2O/Cu
heterojunction
surrounded
mesoporous
PdCu
shell
(Cu2O/Cu@mesoPdCu)
that
accelerated
electrocatalysis
positive
potentials.
Impressively,
Cu2O/Cu@mesoPdCu
nanozymes
hold
superior
performance
robust
NH3
electrosynthesis
fairly
potential
0.10
V
(versus
reversible
hydrogen
electrode),
having
Faraday
efficiency
96.2%,
13.3
mg
h-1
mg-1,
half-cell
46.0%.
Kinetic
studies,
situ
spectra
density
functional
theory
calculations
revealed
preferentially
adsorbed
-
further
reduced
*NO2,
while
active
radicals
enriched
on
promoted
multistep
hydrodeoxygenation
*NO2
within
"semi-closed"
microenvironment,
both
which
synergistically
enabled
Moreover,
this
disclosed
better
more
energy-efficient
manner
when
coupling
with
thermodynamically
favorable
ethanol
oxidation
reaction.
Язык: Английский
Unveiling the surface reconstruction of CoWO4 on electrocatalytic nitrate reduction reaction
Chemical Engineering Journal,
Год журнала:
2024,
Номер
unknown, С. 158819 - 158819
Опубликована: Дек. 1, 2024
Язык: Английский
Tailored Heterogeneous Catalysts via Space‐Confined Engineering for Efficient Electrocatalytic Oxygen Evolution
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 11, 2025
Abstract
Enhancing
the
intrinsic
activity
and
number
of
catalytic
sites
is
crucial
in
developing
high‐performing
robust
electrocatalysts.
Reductionism
provides
a
material
design
concept
that
progresses
from
atoms
to
phases
then
phase
sequences.
Herein,
well‐recognized
high‐active
(CoFe)Se
2
multi‐site
(CoFe)─N─C
are
carefully
selected
creatively
combined
by
space‐confined
selenization,
resulting
@(CoFe)─N─C
heterogeneous
nanocatalyst.
This
simultaneously
yields
“better”
“more”
active
enable
stronger
reaction
kinetics
with
low
overpotential
238
mV
at
10
mA
cm
−2
for
oxygen
evolution
reaction.
The
surprisingly
remained
almost
unchanged
after
an
ultra‐long
500
h
continuous
ideal
combination
effectively
optimizes
absorption
capacity
alters
rate‐determining
step
*O→*OOH
*OH→*O.
work
demonstrates
principles
reductionism
confined
engineering,
opening
promising
avenue
designing
constructing
efficient
multi‐phase
nanomaterials.
Язык: Английский
Surface reconstruction regulation of catalysts for cathodic catalytic electrosynthesis
Applied Catalysis O Open,
Год журнала:
2025,
Номер
unknown, С. 207036 - 207036
Опубликована: Март 1, 2025
Язык: Английский
High-efficiency ammonia electrosynthesis from nitrate on ruthenium-induced trivalent cobalt sites
Energy & Environmental Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
work
highlights
the
potential
of
nitrate
reduction
as
a
viable
and
sustainable
alternative
for
green
ammonia
production,
bridging
gap
between
fundamental
research
industrial
application.
Язык: Английский
Ammonia-mediated CO2 adsorption for ammonium bicarbonate production via simultaneous CO2 capture and nitrate electroreduction in a flow cell with all sputtered thin film electrodes
Applied Catalysis B Environment and Energy,
Год журнала:
2025,
Номер
376, С. 125477 - 125477
Опубликована: Май 13, 2025
Язык: Английский
Ternary Synergy in Layered Double Hydroxides for Efficient and Stable Nitrate Reduction
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 8, 2025
Abstract
Nitrate
pollution
from
agricultural
runoff
and
industrial
discharge
poses
severe
environmental
health
risks,
necessitating
sustainable
remediation.
Electrocatalytic
nitrate
reduction
reaction
(NO
3
RR)
offers
a
promising
solution
by
converting
to
ammonia,
where
catalysts
with
high
activity
selectivity
are
needed.
Here,
it
is
reported
that
layered
double
hydroxides
(LDHs)
can
achieve
highly
efficient
NO
RR
performance
through
composition
engineering
in
situ
reconstruction.
It
shown
ternary
CuZnFe
LDH
catalyst
leverage
synergistic
effects
controlled
surface
reconstruction
for
stable
of
ammonia.
During
RR,
copper
compound
reduced
metallic
state
enhanced
activity,
reconstructed
iron
oxide
stabilizes
the
structure
improves
zinc
selectively
leached
expose
active
sites.
In
ATR‐FTIR
spectroscopy
reveals
initiates
nitrate‐to‐nitrite
conversion,
while
drives
ammonia
formation.
As
result,
achieves
Faraday
efficiency
95%
an
yield
51
mg
h⁻
1
cm⁻
2
,
current
density
0.64
A
at
−0.9
V
vs.
RHE,
stability.
The
findings
provide
insightful
understanding
on
mechanism,
novel
strategies
design
tandem
advanced
Язык: Английский