Tandem Active Sites in Cu/Mo‐WO3 Electrocatalysts for Efficient Electrocatalytic Nitrate Reduction to Ammonia
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 5, 2025
Abstract
Electrocatalytic
NO
3
−
reduction
to
NH
is
a
promising
technique
for
both
ammonia
synthesis
and
nitrate
wastewater
treatment.
However,
this
conversion
involves
tandem
processes
of
H
2
O
dissociation
hydrogenation,
leading
inferior
Faraday
efficiency
(FE)
yield
rate.
Herein,
catalyst
by
anchoring
atomically
dispersed
Cu
species
on
Mo‐doped
WO
(Cu
5
/Mo
0.6
‐WO
)
the
RR
constructed,
which
achieves
superior
FE
N
98.6%
rate
26.25
mg
h
−1
cat
at
−0.7
V
(vs
RHE)
in
alkaline
media,
greatly
exceeding
performance
Mo
/WO
counterparts.
Systematic
electrochemical
measurement
results
reveal
that
promoted
activation
sites,
accompanying
accelerated
water
producing
active
hydrogens
are
responsible
performance.
In
situ
infrared
spectroscopy
theoretical
calculation
further
demonstrate
sites
accelerate
,
dopant
activates
adjacent
resulting
decreased
energy
barrier
*
stepwise
hydrogenation
processes,
making
thermodynamically
favorable.
This
work
demonstrates
critical
role
atomic
level
enhancing
electrocatalytic
paving
feasible
avenue
developing
high‐performance
electrocatalysts.
Язык: Английский
Bamboo-like amorphous Ni(OH)2 nanotubes wrapped Cu nanoparticles with a confined geometry for CO2 electroreduction to ethane in a flow cell
Science China Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
Язык: Английский
Regulating Asymmetric C–C Coupling with Interfacial Alkalinity for Efficient CO2 to C2+ Electroconversion
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 16, 2025
Abstract
The
electrocatalytic
reduction
of
CO
2
in
neutral
electrolytes
is
a
promising
avenue
to
minimize
energy
losses
linked
carbonate
formation.
However,
selectivity
for
multi‐carbon
(C
2+
)
products
hampered
by
kinetic
barriers
C–C
coupling.
Here,
the
regulation
asymmetric
coupling
achieved
with
interfacial
alkalinity,
facilitating
efficient
C
electroconversion.
This
realized
co‐engineering
copper
electrodes
ZrO
sites
and
CeO
x
enable
favorable
microenvironment
that
greatly
boosts
intrinsic
catalytic
activity.
In
situ
spectroscopic
results
theoretical
analyses
demonstrates
facilitates
dissociation
H
O
into
*H
*OH,
effectively
regulating
coverage
at
interface
promoting
protonation
*CO
*COH.
Meanwhile,
significantly
enhance
adsorption
situ‐produced
optimize
local
pH
on
Cu
surface,
formation
via
low‐energy
*OC–COH
pathway.
A
notable
electroconversion
1.0
M
KCl
electrolyte,
Faraday
efficiency
67.2
±
2.1%
partial
current
density
413.0
9.9
mA
cm
−2
achieved.
synergistic
enhancement
hydroxyl
stabilization
interface,
driven
activation
O,
crucial
boosting
overall
performance
system.
Язык: Английский
Progress in Cu‐Based Catalyst Design for Sustained Electrocatalytic CO2 to C2+ Conversion
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 27, 2025
Abstract
The
electrocatalytic
conversion
of
CO
2
into
valuable
multi‐carbon
(C
2+
)
products
using
Cu‐based
catalysts
has
attracted
significant
attention.
This
review
provides
a
comprehensive
overview
recent
advances
in
catalyst
design
to
improve
C
selectivity
and
operational
stability.
It
begins
with
an
analysis
the
fundamental
reaction
pathways
for
formation,
encompassing
both
established
emerging
mechanisms,
which
offer
critical
insights
design.
In
situ
techniques,
essential
validating
these
by
real‐time
observation
intermediates
material
evolution,
are
also
introduced.
A
key
focus
this
is
placed
on
how
enhance
through
manipulation,
particularly
emphasizing
catalytic
site
construction
promote
C─C
coupling
via
increasing
*
coverage
optimizing
protonation.
Additionally,
challenge
maintaining
activity
under
conditions
discussed,
highlighting
reduction
active
charged
Cu
species
materials
reconstruction
as
major
obstacles.
To
address
these,
describes
strategies
preserve
sites
control
including
novel
utilization
mitigation
reconstruction.
By
presenting
developments
challenges
ahead,
aims
guide
future
conversion.
Язык: Английский
The Graphite-Phase Carbon Nitride/Silver Nanoclusters Nanocomposites Ratiometric Fluorescent Probe for Detection of Glutathione and Recognition of Cancer Cells
Опубликована: Янв. 1, 2025
Язык: Английский
Cu-based Bimetallic Catalysts for Electrochemical CO2 Reduction: Before and Beyond the Tandem Effect
Dan Luo,
Weidong Dai,
Keying Wu
и другие.
Nanoscale,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Cu-based
bimetallic
catalysts
show
enhanced
electrochemical
CO
2
reduction
performance
via
the
tandem
effect.
This
review
traces
their
progress,
highlighting
design
advances,
mechanisms,
and
challenges
to
guide
efficient
conversion.
Язык: Английский
Controlling the Activity and Selectivity of Cu Catalysts toward Industrially Relevant Ethanol Electrosynthesis via High-Index Step Density Engineering
ACS Nano,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 27, 2025
Electrochemical
CO2
reduction
reaction
on
Cu
catalysts
can
generate
high-value
multicarbon
(C2+)
products,
making
it
a
significant
research
area
of
growing
commercial
interest.
However,
the
production
rate
ethanol
remains
low
owing
to
trade-off
between
activity
and
selectivity
catalysts.
Here,
we
develop
defect-rich
catalyst
with
abundant
high-index
step
sites
by
chemically
etching
commercially
available
nanoparticles.
This
exhibits
high
Faradaic
efficiency
∼50%
partial
current
density
∼416
mA
cm-2
for
production.
Furthermore,
shows
good
stability
at
total
∼800
cm-2,
without
obvious
decay
in
selectivity.
Control
experiments
indicate
that
impressive
is
closely
associated
steps
present
catalyst.
In
situ
Raman
spectroscopy
functional
theory
calculations
further
verify
optimal
enable
balanced
adsorption
*CO,
*OH,
*H,
facilitate
hydrogenation
*CHCOH
*CHCHOH,
thereby
improving
work
underscores
importance
control
steering
pathway
toward
ethanol.
Язык: Английский
The graphite-phase carbon nitride/silver nanoclusters nanocomposites ratiometric fluorescent probe for detection of glutathione and recognition of cancer cells
Microchemical Journal,
Год журнала:
2025,
Номер
unknown, С. 113706 - 113706
Опубликована: Апрель 1, 2025
Язык: Английский
Highly Selective Oxidation of Benzene to Phenol Mediated by KHCO3 in the Bimetallic Mo–Cu/NC-H2O2 System
Qingshuai Zhang,
Yu-Le Wang,
Yue Li
и другие.
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 28, 2025
Although
selective
oxidation
of
benzene
to
phenol
(SOBP)
by
H2O2
is
an
important
chemical
process,
overoxidation
the
produced
nonselective
•OH
during
activation
inevitably
reduces
selectivity.
We,
therefore,
attempt
mediate
selectively
using
electrophilic
KHCO3
in
system.
In
this
study,
Mo-Cu/NC
has
been
successfully
synthesized
via
ball-milling
bimetallic
Mo-Cu
and
N-doped
carbon,
which
exhibits
high
reactivity
SOBP
with
a
desirable
yield
25.1%
selectivity
100%.
A
series
characterizations
DFT
calculations
reveal
that
reaction
between
produces
HCO4-,
then
moderately
activated
on
Mo1Cu2/NC
nonradical
pathway
formation
Mo-(η2-O2)
peroxo.
Meanwhile,
Ov
at
facilitates
adsorption
benzene,
oxidized
peroxo
oxygen
atom
transfer
pathway.
This
study
provides
new
insights
importance
mediated
H2O2-KHCO3
aromatic
C-H
bond
Язык: Английский