Abstract
Developing
non‐precious‐metal
electrocatalysts
that
can
operate
with
a
low
overpotential
at
high
current
density
for
industrial
application
is
challenging.
Heterogeneous
bimetallic
phosphides
have
attracted
much
interest.
Despite
hydrogen
evolution
reaction
(HER)
performance,
the
ordinary
oxygen
(OER)
performance
hinders
their
practical
use.
Herein,
it
shown
Fe‐doping
reverses
and
enlarges
interfacial
electrical
field
heterojunction,
turning
H
intermediate
favorable
binding
sites
HER
into
O
OER.
Specifically,
self‐supported
heterojunction
catalysts
on
nickel
foam
(CoP@Ni
2
P/NF
Fe‐CoP@Fe‐Ni
P/NF)
are
readily
synthesized.
They
only
require
overpotentials
of
266
274
mV
to
drive
large
1000
mA
cm
−2
(
j
)
OER,
respectively.
Furthermore,
water
splitting
cell
equipped
these
electrodes
requires
voltage
1.724
V
excellent
durability,
demonstrating
potential
application.
This
work
offers
new
insights
engineering
catalysts.
SusMat,
Год журнала:
2023,
Номер
3(3), С. 290 - 319
Опубликована: Май 18, 2023
Abstract
Electrochemical
oxidation
of
small
molecules
(e.g.,
water,
urea,
methanol,
hydrazine,
and
glycerol)
has
gained
growing
scientific
interest
in
the
fields
electrochemical
energy
conversion/storage
environmental
remediation.
Designing
cost‐effective
catalysts
for
electrooxidation
(ESM)
is
thus
crucial
improving
reaction
efficiency.
Recently,
earth‐abundant
amorphous
transition
metal
(TM)‐based
nanomaterials
have
aroused
souring
owing
to
their
earth‐abundance,
flexible
structures,
excellent
activities.
Hundreds
TM‐based
been
designed
used
as
promising
ESM
catalysts.
Herein,
recent
advances
design
are
comprehensively
reviewed.
The
features
large
specific
surface
area,
electronic
structure,
facile
structure
reconstruction)
first
analyzed.
Afterward,
various
with
advanced
strategies
nanostructure
design,
component
regulation,
heteroatom
doping,
heterostructure
construction)
fully
scrutinized,
catalysts’
structure‐performance
correlation
emphasized.
Future
perspectives
development
then
outlined.
This
review
expected
provide
practical
next‐generation
electrocatalysts.
eScience,
Год журнала:
2023,
Номер
4(1), С. 100206 - 100206
Опубликована: Окт. 29, 2023
Devising
a
desirable
nano-heterostructured
photoelectrode
based
on
the
charge
transfer
kinetics
mechanism
is
pivotal
strategy
for
implementing
efficient
photoelectrocatalytic
(PEC)
technology,
since
separation
and
utilization
efficiency
of
critical
to
its
PEC
performance.
Herein,
we
fabricate
F-Co3O4@Bi2WO6
core–shell
hetero-array
photoanode
by
coupling
Bi2WO6
nanosheets
with
F-Co3O4
nanowires
using
simple
solvothermal
solution
method.
The
three-dimensional
hierarchical
heterostructure
has
homogeneous
chemical
interface,
helping
it
promote
an
S-scheme-based
carrier
transport
maintain
excellent
cycling
stability.
Charge
density
difference
calculations
verify
electron
migration
trend
from
upon
hybridization
formation
internal
electric
field
in
heterojunction,
consistent
S-scheme
mechanism,
which
identified
situ
irradiation
X-ray
photoelectron
spectroscopy
ultraviolet
spectroscopy.
optimized
F-Co3O4@Bi2WO6-2
achieves
high
exhibits
superior
degradation
performance
various
organic
pollutants,
including
reactive
brilliant
blue
KN-R,
rhodamine
B,
sulfamethoxazole,
bisphenol
A.
This
work
not
only
reveals
that
effective
water
remediation
but
also
provides
enhance
designing
binary
oxides.
Abstract
Developing
non‐precious‐metal
electrocatalysts
that
can
operate
with
a
low
overpotential
at
high
current
density
for
industrial
application
is
challenging.
Heterogeneous
bimetallic
phosphides
have
attracted
much
interest.
Despite
hydrogen
evolution
reaction
(HER)
performance,
the
ordinary
oxygen
(OER)
performance
hinders
their
practical
use.
Herein,
it
shown
Fe‐doping
reverses
and
enlarges
interfacial
electrical
field
heterojunction,
turning
H
intermediate
favorable
binding
sites
HER
into
O
OER.
Specifically,
self‐supported
heterojunction
catalysts
on
nickel
foam
(CoP@Ni
2
P/NF
Fe‐CoP@Fe‐Ni
P/NF)
are
readily
synthesized.
They
only
require
overpotentials
of
266
274
mV
to
drive
large
1000
mA
cm
−2
(
j
)
OER,
respectively.
Furthermore,
water
splitting
cell
equipped
these
electrodes
requires
voltage
1.724
V
excellent
durability,
demonstrating
potential
application.
This
work
offers
new
insights
engineering
catalysts.
