Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 20, 2025
Abstract
Energy
electrocatalytic
reactions
such
as
hydrogen
evolution
reaction,
oxygen
reduction
nitrogen
carbon
etc.,
are
important
to
solve
the
current
energy
shortage
and
increasing
environmental
problems.
Developing
novel
efficient
catalyts
for
these
has
become
an
essential
urgent
issue.
Catalysts
incorporating
bridge‐oxygen
bond
have
received
attention
due
their
superior
conductivity
stability,
which
favorable
optimizing
reaction
mechanism
improving
kinetics.
This
paper
provides
a
comprehensive
review
encompassing
concept
of
bond,
means
characterization,
activity
in
electrocatalysis
effect
on
catalytic
performance.
Through
this
review,
it
is
expected
furnish
valuable
reference
rational
design
catalysts
featuring
structure
across
diverse
reactions.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 8, 2024
Considering
the
substantial
role
of
ammonia,
developing
highly
efficient
electrocatalysts
for
nitrate-to-ammonia
conversion
has
attracted
increasing
interest.
Herein,
we
proposed
a
feasible
strategy
p-d
orbital
hybridization
via
doping
p-block
metals
in
an
Ag
host,
which
drastically
promotes
performance
nitrate
adsorption
and
disassociation.
Typically,
Sn-doped
catalyst
(SnAg)
delivers
maximum
Faradaic
efficiency
(FE)
95.5±1.85
%
NH
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(30)
Published: May 14, 2024
Abstract
Transition‐metal
carbides
with
metallic
properties
have
been
extensively
used
as
electrocatalysts
due
to
their
excellent
conductivity
and
unique
electronic
structures.
Herein,
NbC
nanoparticles
decorated
carbon
nanofibers
(NbC@CNFs)
are
proposed
an
efficient
robust
catalyst
for
electrochemical
synthesis
of
ammonia
from
nitrate/nitrite
reduction,
which
achieves
a
high
Faradaic
efficiency
(FE)
94.4
%
large
yield
30.9
mg
h
−1
cat.
.
In
situ
tests
reveal
the
nitrite
reduction
at
surface
follows
*NO
pathway
theoretical
calculations
formation
NbC@CNFs
heterostructure
significantly
broadens
density
states
nearby
Fermi
energy.
Finite
element
simulations
unveil
that
current
electric
field
converge
on
along
fiber,
suggesting
dispersed
highly
active
reduction.
Electrocatalytic
NO2–-to-NH3
reduction
(NO2RR)
offers
an
attractive
way
to
remedy
polluted
NO2–
and
produce
value-added
NH3.
In
this
study,
main-group
Sn
single
atoms
anchored
on
S-vacancy-rich
MoS2–x
(Sn1/MoS2–x)
are
explored
as
a
highly
selective
NO2RR
catalyst.
Combined
theoretical
computations
in
situ
spectroscopic
measurements
reveal
that
the
isolated
Sn1
sites
of
Sn1/MoS2–x
can
not
only
promote
activation
hydrogenation
but
also
favor
NH3
desorption
restrict
H
adsorption,
thus
enabling
for
synthesis.
Remarkably,
exhibits
NH3–Faradaic
efficiency
98.8%
yield
rate
1922.3
μmol
h–1
cm–2
flow
cell,
outperforming
most
catalysts
reported
date.
Nitrogen
reduction
reaction
(NRR)
offers
a
sustainable
alternative
to
the
energy-intensive
Haber–Bosch
process
for
ammonia
synthesis
under
ambient
conditions
while
also
mitigating
serious
global
warming
impact
of
fossil
fuels.
However,
competing
hydrogen
evolution
remains
significant
challenge
in
NRR
systems.
In
this
work,
we
propose
Bi-doped
CuFe
nanoclusters
loaded
on
3D
copper
foams
(CFs)
as
an
enhanced
N2
electrocatalyst
NRR.
The
catalyst
exhibited
superior
activity
compared
undoped
counterpart,
achieving
high
yield
216.1
μg
h–1
cm–2
with
Faradaic
efficiency
46.8%
at
−0.4
V
vs
reversible
electrode.
Importantly,
showed
good
selectivity
minimal
N2H4
byproduct
generation
and
excellent
stability.
Bismuth
incorporation
induced
lattice
expansion
electronic
defects,
which
turn
created
structural
defects
oxygen
vacancies.
These
changes
effectively
promoted
adsorption
activation
molecules.
Comprehensive
characterization
revealed
that
Bi
doping
decreased
vacancy
density
bulk
phase
but
increased
surface.
This
phenomenon
expanded
spacing,
inhibiting
H*
combination
produce
H2,
surface
vacancies
regulated
strength
NxHy
intermediates
during
electrocatalytic
process.
Density
functional
theory
calculations
further
confirmed
active
sites,
well
subsequent
hydrogenation
steps,
leading
lower
energy
barrier
distal
pathway
NH3
formation.
Moreover,
Zn–N2
battery
assembled
Bi–CuFe/CF
shows
power
14.01
mW
cm–2,
enables
simultaneous
production
supply,
gives
it
potential
field
energy.
work
demonstrates
promising
approach
developing
efficient
electrocatalysts
by
structure
modulation,
contributing
transition
toward
low-carbon
economy.
