ACS Applied Materials & Interfaces,
Journal Year:
2022,
Volume and Issue:
14(34), P. 38669 - 38676
Published: Aug. 22, 2022
Defect
engineering
and
interface
are
two
efficient
approaches
to
promote
the
electrocatalytic
performance
of
transition
metal
oxides
(TMOs)
by
modulating
local
electronic
structure
inducing
a
synergistic
effect
but
usually
require
costly
complicated
processes.
Herein,
facile
electrochemical
etching
method
is
proposed
for
controllable
tailoring
defects
in
three-dimensional
(3D)
open
nanonetcage
CoZnRuOx
heterostructure
via
situ
remove
partial
ZnO.
The
highly
3D
nanostructures,
numerous
defects,
multicomponent
heterointerfaces
endow
nanonetcages
with
more
accessible
active
sites,
moderated
structure,
strong
effect,
thereby
enabling
them
not
only
deliver
an
ultralow
overpotential
(244
mV
@
10
mA
cm-2)
oxygen
evolution
reaction
(OER)
also
high-performance
overall
water
electrolysis
coupling
commercial
Pt/C,
potential
1.52
V
at
cm-2.
Moreover,
experiments
characterizations
reveal
that
remaining
Zn2+
can
facilitate
OH-
adsorption
charge
transfer,
which
further
improves
OER
performance.
This
work
proposes
promising
strategy
creating
surface
heterostructured
TMOs
provides
insights
understand
defect-
interface-induced
enhancement
electrocatalysis.
Inorganic Chemistry,
Journal Year:
2022,
Volume and Issue:
61(35), P. 14224 - 14232
Published: Aug. 24, 2022
Rational
design
and
construction
of
well-defined
hollow
heterostructured
nanomaterials
assembled
by
ultrathin
nanosheets
overtakes
crucial
role
in
developing
high-efficiency
oxygen
evolution
reaction
(OER)
electrocatalysts.
Herein,
a
reliable
metal–organic
framework-mediated
cation-exchange
strategy
to
tune
the
geometric
structure
multicomponent
heterostructures
has
been
proposed
for
fabrication
CoWO4–Co(OH)2
hierarchical
nanoboxes
rich
nanosheets.
Benefiting
from
nanostructure,
offer
plenty
metal
active
centers
available
intermediates.
Moreover,
nanointerfaces
between
CoWO4
Co(OH)2
can
function
as
bridge
boosting
efficient
electron
transfer
Co(OH)2.
As
consequence,
optimized
exhibit
outstanding
electrocatalytic
performance
toward
OER
delivering
10
mA
cm–2
with
low
overpotential
280
mV
small
Tafel
slope
70.6
dec–1
well
electrochemical
stability.
More
importantly,
this
nanocatalyst
couple
Pt/C
drive
overall
water
splitting
achieve
voltage
1.57
V.
The Chemical Record,
Journal Year:
2022,
Volume and Issue:
23(2)
Published: Oct. 4, 2022
The
implementation
of
electrochemical
water
splitting
demands
the
development
and
application
electrocatalysts
to
overcome
sluggish
reaction
kinetics
hydrogen/oxygen
evolution
(HER/OER).
Hollow
nanostructures,
particularly
for
hollow
heterostructured
nanomaterials
can
provide
multiple
solutions
accelerate
HER/OER
owing
their
advantageous
merit.
Herein,
recent
advances
nanocatalysts
excellent
performance
are
systematically
summarized.
Starting
by
illustrating
intrinsically
features
heterostructures,
achievements
in
engineering
also
highlighted
with
focus
on
structural
design,
interfacial
engineering,
composition
regulation,
catalytic
evaluation.
Finally,
some
perspective
insights
future
challenges
electrocatalytic
discussed.
Nanoscale Horizons,
Journal Year:
2023,
Volume and Issue:
8(4), P. 441 - 452
Published: Jan. 1, 2023
A
critical
review
of
built-in
electric
fields
for
the
applications
in
electrocatalytic
reactions
is
organized
by
focusing
on
fundamental
concepts,
modification
strategies,
and
positive
influences
promotion
catalytic
performance.
Inorganic Chemistry,
Journal Year:
2023,
Volume and Issue:
62(28), P. 11271 - 11277
Published: June 29, 2023
The
introduction
of
high-entropy
and
high
specific
surface
area
into
Prussian
blue
analogues
(PBAs)
has
yet
to
create
interest
in
the
field
electrocatalytic
small-molecule
oxidation
reactions.
Herein,
we
synthesize
a
novel
class
(HE)
PBAs
with
via
simple
NH3·H2O-etching
strategy
systematically
investigate
performance
HE-PBA
toward
water,
ethanol,
urea
Importantly,
NH3·H2O-etched
(denoted
as
HE-PBA-e)
demonstrated
enhanced
compared
pristine
HE-PBA,
reaching
10
mA
cm-2
potentials
1.56,
1.41,
1.37
V
for
oxygen
evolution
reaction
(OER),
ethanol
(EOR),
(UOR),
respectively.
Deep
characterizations
suggest
that
NH3·H2O
etching
treatment
not
only
creates
rich
nanopores
enlarge
boosts
mass
transport
electron
transfer
but
also
facilitates
formation
high-valence
metal
oxides
improve
intrinsic
activity.
This
demonstration
how
increasing
state
metals
will
serve
governing
principle
rational
design
more
advanced
HE-PBAs
electrooxidation
small
molecules.
