Abstract
Nitrate
has
a
high
level
of
stability
and
persistence
in
water,
endangering
human
health
aquatic
ecosystems.
Due
to
its
reliability
efficiency,
the
electrochemical
nitrate
reduction
reaction
(NO
3
RR)
is
regarded
as
best
available
option
for
mitigating
excess
water
wastewater,
especially
removal
trace
levels
nitrate.
One
most
critical
factors
are
catalysts,
which
directly
affect
efficiency
removal.
Iron‐based
nanocatalysts,
have
advantages
nontoxicity,
wide
availability,
low
cost,
emerged
promising
NO
RR
material
recent
years.
This
review
covers
major
aspects
iron‐based
nanocatalysts
RR,
including
synthetic
methods,
structural
design,
performance
enhancement,
electrocatalytic
test,
mechanism.
The
progress
mechanism
functional
modified
structures
reviewed
from
perspectives
loading,
doping,
assembly
strategies,
order
realize
conversion
pollutant
harmless
nitrogen
or
ammonia
other
sustainable
products.
Finally,
challenges
future
directions
development
low‐cost
highly‐efficient
explored.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(8)
Опубликована: Янв. 3, 2023
Rechargeable
aqueous
zinc
ion
batteries
(AZIBs)
promise
high
energy
density,
low
redox
potential,
cost
and
safety;
however,
their
cycle
performances
are
seriously
insufficient
to
restrict
the
progress
in
this
field.
We
propose
a
new
concept
of
atomic
electrode
formed
on
graphdiyne
(GDY).
This
idea
was
synthesized
by
selectively,
uniformly,
stably
anchoring
Zn
atoms
GDY
at
beginning
plating.
The
induced
grow
into
larger
size
clusters,
which
continue
nanoflat.
Finally,
heterojunction
interface
is
without
any
dendrites
side
reactions,
even
current
densities.
Such
stepwise
induction
growth
greatly
suppresses
formation
dendrites,
resulting
electroplating/stripping
reversibility
lifespan
AZIBs.
Proceedings of the National Academy of Sciences,
Год журнала:
2023,
Номер
120(32)
Опубликована: Июль 31, 2023
Electrochemical
nitrate
reduction
reaction
(NO
3
RR)
to
ammonia
has
been
regarded
as
a
promising
strategy
balance
the
global
nitrogen
cycle.
However,
it
still
suffers
from
poor
Faradaic
efficiency
(FE)
and
limited
yield
rate
for
production
on
heterogeneous
electrocatalysts,
especially
in
neutral
solutions.
Herein,
we
report
one-pot
synthesis
of
ultrathin
nanosheet-assembled
RuFe
nanoflowers
with
low-coordinated
Ru
sites
enhance
NO
RR
performances
electrolyte.
Significantly,
exhibit
outstanding
FE
92.9%
38.68
mg
h
−1
cat
(64.47
)
at
−0.30
−0.65
V
(vs.
reversible
hydrogen
electrode),
respectively.
Experimental
studies
theoretical
calculations
reveal
that
are
highly
electroactive
an
increased
d-band
center
guarantee
efficient
electron
transfer,
leading
low
energy
barriers
reduction.
The
demonstration
rechargeable
zinc-nitrate
batteries
large-specific
capacity
using
indicates
their
great
potential
next-generation
electrochemical
systems.
Energy & Environmental Science,
Год журнала:
2023,
Номер
16(6), С. 2483 - 2493
Опубликована: Янв. 1, 2023
Electron-deficient
Ru
sites
at
Ru/Co(OH)
2
heterointerfaces
weaken
the
d–p
orbital
hybridization
ability
and
further
facilitate
desorption
of
ammonia
intermediates,
thereby
achieving
ultrahigh
nitrate
electroreduction
activity
towards
ammonia.
Abstract
Nitrate
has
a
high
level
of
stability
and
persistence
in
water,
endangering
human
health
aquatic
ecosystems.
Due
to
its
reliability
efficiency,
the
electrochemical
nitrate
reduction
reaction
(NO
3
RR)
is
regarded
as
best
available
option
for
mitigating
excess
water
wastewater,
especially
removal
trace
levels
nitrate.
One
most
critical
factors
are
catalysts,
which
directly
affect
efficiency
removal.
Iron‐based
nanocatalysts,
have
advantages
nontoxicity,
wide
availability,
low
cost,
emerged
promising
NO
RR
material
recent
years.
This
review
covers
major
aspects
iron‐based
nanocatalysts
RR,
including
synthetic
methods,
structural
design,
performance
enhancement,
electrocatalytic
test,
mechanism.
The
progress
mechanism
functional
modified
structures
reviewed
from
perspectives
loading,
doping,
assembly
strategies,
order
realize
conversion
pollutant
harmless
nitrogen
or
ammonia
other
sustainable
products.
Finally,
challenges
future
directions
development
low‐cost
highly‐efficient
explored.
