Advanced Materials,
Год журнала:
2023,
Номер
35(46)
Опубликована: Июль 25, 2023
The
electrocatalytic
reduction
of
nitrate
(NO3-
)
to
nitrogen
(N2
is
an
environmentally
friendly
approach
for
efficient
N-cycle
management
(toward
a
nitrogen-neutral
cycle).
However,
poor
catalyst
durability
and
the
competitive
hydrogen
evolution
reaction
significantly
impede
its
practical
application.
Interface-chemistry
engineering,
utilizing
close
relationship
between
surface/interface
microenvironment
electron/proton
transfer
process,
has
facilitated
development
catalysts
with
high
intrinsic
activity
physicochemical
durability.
This
study
reports
synthesis
nitrogen-doped
carbon-coated
rice-like
iron
nitride
(RL-Fe2
N@NC)
electrocatalyst
excellent
nitrate-reduction
(high
N2
selectivity
(≈96%)
NO3-
conversion
(≈86%)).
According
detailed
mechanistic
investigations
by
in
situ
tests
theoretical
calculations,
strong
hydrogenation
ability
enhanced
enrichment
system
synergistically
contribute
rapid
nitrogen-containing
species,
increasing
reducing
occurrence
competing
hydrogen-evolution
side
reaction.
Moreover,
RL-Fe2
N@NC
shows
stability,
retaining
good
-to-N2
electrocatalysis
more
than
40
cycles
(one
cycle
per
day).
paper
could
guide
interfacial
design
Fe-based
composite
nanostructures
reduction,
facilitating
shift
toward
neutrality.
Nano-Micro Letters,
Год журнала:
2020,
Номер
13(1)
Опубликована: Окт. 27, 2020
Abstract
Electrocatalytic
carbon
dioxide
(CO
2
)
reduction
(ECR)
has
become
one
of
the
main
methods
to
close
broken
cycle
and
temporarily
store
renewable
energy,
but
there
are
still
some
problems
such
as
poor
stability,
low
activity,
selectivity.
While
most
promising
strategy
improve
ECR
activity
is
develop
electrocatalysts
with
cost,
high
long-term
stability.
Recently,
defective
carbon-based
nanomaterials
have
attracted
extensive
attention
due
unbalanced
electron
distribution
electronic
structural
distortion
caused
by
defects
on
materials.
Here,
present
review
mainly
summarizes
latest
research
progress
construction
diverse
types
(intrinsic
defects,
heteroatom
doping
metal
atomic
sites,
edges
detects)
for
materials
in
ECR,
unveil
structure–activity
relationship
its
catalytic
mechanism.
The
current
challenges
opportunities
faced
high-performance
discussed,
well
possible
future
solutions.
It
can
be
believed
that
this
provide
inspiration
development
catalysts.
Carbon-based
nanomaterials,
including
graphene,
fullerenes,
and
carbon
nanotubes,
are
attracting
significant
attention
as
promising
materials
for
next-generation
energy
storage
conversion
applications.
They
possess
unique
physicochemical
properties,
such
structural
stability
flexibility,
high
porosity,
tunable
features,
which
render
them
well
suited
in
these
hot
research
fields.
Technological
advances
at
atomic
electronic
levels
crucial
developing
more
efficient
durable
devices.
This
comprehensive
review
provides
a
state-of-the-art
overview
of
advanced
carbon-based
nanomaterials
various
applications,
focusing
on
supercapacitors,
lithium
sodium-ion
batteries,
hydrogen
evolution
reactions.
Particular
emphasis
is
placed
the
strategies
employed
to
enhance
performance
through
nonmetallic
elemental
doping
N,
B,
S,
P
either
individual
or
codoping,
modifications
creation
defect
sites,
edge
functionalization,
inter-layer
distance
manipulation,
aiming
provide
general
guidelines
designing
devices
by
above
approaches
achieve
optimal
performance.
Furthermore,
this
delves
into
challenges
future
prospects
advancement
electrodes
conversion.
Abstract
The
highly
efficient
energy
conversion
of
the
polymer‐electrolyte‐membrane
fuel
cell
(PEMFC)
is
extremely
limited
by
sluggish
oxygen
reduction
reaction
(ORR)
kinetics
and
poor
electrochemical
stability
catalysts.
Hitherto,
to
replace
costly
Pt‐based
catalysts,
non‐noble‐metal
ORR
catalysts
are
developed,
among
which
transition
metal–heteroatoms–carbon
(TM–H–C)
materials
present
great
potential
for
industrial
applications
due
their
outstanding
catalytic
activity
low
expense.
However,
during
testing
in
a
two‐electrode
system
high
complexity
have
become
big
barrier
commercial
applications.
Thus,
herein,
simplify
research,
typical
Fe–N–C
material
with
relatively
simple
constitution
structure,
selected
as
model
catalyst
TM–H–C
explore
improve
such
kind
Then,
different
types
active
sites
(centers)
coordination
systematically
summarized
discussed,
possible
attenuation
mechanism
strategies
analyzed.
Finally,
some
challenges
faced
prospects
proposed
shed
light
on
future
development
trend
advanced
catalysis.
Advanced Energy Materials,
Год журнала:
2021,
Номер
12(6)
Опубликована: Дек. 30, 2021
Abstract
In
recent
years,
research
into
the
synthesis
and
applications
of
0D
carbon
dots
(CDs)
has
blossomed
a
vibrant
exciting
new
field.
CDs
possess
diverse
fascinating
chemical,
structural,
optical
characteristics,
which
can
be
exploited
in
both
fundamental
applied
areas.
particular,
their
superior
electrochemical
activity
ease‐of‐modification
make
very
promising
electrode
materials
electrocatalysis
electrical
energy
storage.
This
review
seeks
to
provide
an
overview
latest
ground‐breaking
relating
utilization
processes
storage,
thus
providing
timely
snapshot
advancements
this
area.
To
begin,
advances
methods,
structural
modification/functionalization
strategies
are
explored,
with
view
toward
structure‐property
relationships.
Next,
performance
various
energy‐related
summarized,
including
H
2
evolution,
O
evolution/reduction,
CO
reduction,
batteries
supercapacitors.
Finally,
future
challenges
opportunities
for
CDs‐based
devices
surveyed.
Advanced Energy Materials,
Год журнала:
2021,
Номер
12(1)
Опубликована: Ноя. 21, 2021
Abstract
Indisputably,
noble‐metal
single
atom
catalysts
(SACs)
are
one
of
the
most
popular
research
topics
in
field
catalysis
because
their
low
cost,
ultrahigh
atomic
utilization,
and
distinctive
performance
for
a
wide
variety
catalytic
reactions.
Support
materials
play
vital
role
preparation
SACs.
Thus,
diverse
support
have
been
developed
very
rapidly
elaborately
designed
last
few
years.
In
this
review,
effects
SACs
first
systematically
introduced,
including
anchoring
effects,
strong
metal–support
interactions,
synergistic
effects.
Moreover,
recent
advances
classified
discussed
detail
with
focus
on
mechanism.
Importantly,
design
strategies
advanced
supports
summarized
guiding
development
utilization
materials.
To
conclude
possible
future
directions
put
forward
to
help
overcome
current
issues
facing
Advanced Functional Materials,
Год журнала:
2022,
Номер
32(31)
Опубликована: Май 31, 2022
Abstract
Nitrogen‐doped
carbons
are
among
the
fastest‐growing
class
of
materials
used
for
oxygen
electrocatalysis,
namely,
reduction
reaction
(ORR)
and
evolution
(OER),
thanks
to
their
low
cost,
environmental
friendliness,
excellent
electrical
conductivity,
scalable
synthesis.
The
perspective
replacing
precious
metal‐based
electrocatalysts
with
nitrogen‐doped
carbon
is
highly
desirable
reducing
costs
in
energy
conversion
storage
systems.
In
this
review,
role
nitrogen
N‐induced
structural
defects
on
enhanced
performance
N‐doped
toward
OER
ORR
as
well
applications
technologies
summarized.
synthesis
characterization
functional
groups
active
sites
also
reviewed.
electrocatalytic
main
types
OER/ORR
electrocatalysis
then
discussed.
Finally,
major
challenges
future
opportunities
advanced
highlighted.
