Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(47), P. 20553 - 20562
Published: Nov. 13, 2024
In
recent
years,
Fe–N–C
materials
have
been
considered
as
feasible
substitutes
for
platinum-based
catalysts
to
enhance
the
oxygen
reduction
reaction
(ORR).
However,
still
specific
problems,
including
poor
inherent
activity,
restricted
availability
of
active
sites,
and
inferior
stability.
This
work
presents
a
simple
efficient
method
synthesizing
Fe/N
codoped
hierarchical
porous
carbon
nanosheets
using
one-step
pyrolysis.
The
optimized
900
catalyst
exhibits
excellent
ORR
performance
with
an
onset
potential
0.958
V
half-potentials
0.885
in
alkaline
medium,
surpassing
those
commercial
Pt/C
catalyst.
addition,
optimal
demonstrated
improved
stability
great
resistance
methanol.
Furthermore,
zinc-air
battery
constructed
from
shows
remarkable
power
density
163.65
mW
cm–2
capacity
807.80
mA
h
gZn–1.
electrochemical
cycle
were
proven
exceed
400
at
current
5
cm–2.
study
offers
valuable
insights
development
highly
stable
clean
energy
field.
Biomaterials Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Nanozymes
are
a
class
of
nanomaterials
with
enzyme-like
activity
that
can
mimic
the
catalytic
properties
natural
enzymes.
The
small
size,
high
activity,
and
strong
stability
nanozymes
compared
to
those
enzymes
allow
them
not
only
exist
in
wide
temperature
pH
range
but
also
maintain
complex
environments.
Recently
developed
single-atom
have
metal
active
sites
composed
single
atom
fixed
carrier.
These
atoms
act
as
independent
catalytically
centers.
Metal
homogeneous
structure
suitable
coordination
environment
for
stronger
specificity
than
traditional
nanozymes.
antioxidant
ability
removing
reactive
oxygen
species
(ROS)
simulate
superoxidase
dismutase,
catalase,
glutathione
peroxidase
show
different
effects
