The Journal of Physical Chemistry C,
Journal Year:
2024,
Volume and Issue:
128(47), P. 20140 - 20147
Published: Nov. 14, 2024
In
this
study,
trimetallic
Au@PdPt
nanoparticles
(NPs)
were
synthesized
by
a
seed-mediated
technique,
possessing
hexoctahedral
(HOH)
Au
core
with
branched
PdPt
alloy
shell.
The
fabrication
process
involved
the
synthesis
of
HOH
NPs
exhibiting
high-index
{651}
facet
as
nanotemplates,
followed
epitaxial
growth
Pd
and
Pt
on
these
to
yield
NPs.
size
composition
well
thickness
shells
(from
2
4,
5,
8
nm)
can
be
precisely
adjusted
varying
quantity
precursors.
catalytic
efficacy
was
significantly
enhanced
through
synergistic
effect
between
Au,
Pd,
Pt,
along
increased
contact
areas
afforded
multibranched
shells.
For
methanol
electro-oxidation,
activity
depends
content
showing
distinctive
volcano-type
pattern.
Remarkably,
[email protected]
demonstrate
optimum
performance
for
oxidation
in
acidic
conditions,
superior
electrocatalytic
properties
compared
commercial
black
catalysts.
Their
ECSA
value,
mass,
specific
activities
are
47.21
m2
g–1,
0.93
A
mg–1,
1.97
mA
cm–2,
respectively.
This
research
exploited
fabricate
catalysts
exceptional
designing
controlling
size,
morphology
Electrochemistry Communications,
Journal Year:
2024,
Volume and Issue:
166, P. 107774 - 107774
Published: July 2, 2024
Common
methods
based
on
enzymatic
approaches
for
uric
acid
(UA)
have
potential
issues
such
as
limited
detection
range,
low
linearity,
and
susceptibility
to
interference.
Our
study
focuses
enhancing
the
sensitivity
selectivity
of
detecting
UA
by
decorating
carbon
nanotubes
(CNTs)
with
bimetallic
platinum-cobalt
nanoparticles
(PtCo/CNTs)
using
an
adsorbing-thermal
reducing
method
electrochemical
analysis.
Physical
characterizations
are
employed
confirm
its
structural
element
compositions.
Then,
biosensor
screen
printed
electrode
(SPE)
modified
PtCo/CNTs
was
constructed
determination.
SPE
(PtCo/CNTs@SPE)
demonstrates
significant
activity
toward
due
synergistic
effect
between
PtCo
CNTs,
excellent
electrical
conductivity.
Under
optimized
conditions,
current
response
at
PtCo/CNTs@SPE
presented
linear
dependence
concentration,
ranging
from
0.1
µM
3000.0
a
limit
0.05
µM.
In
addition,
selectivity,
stability,
practical
applications
as-prepared
sensor
also
explored.
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(36), P. 19134 - 19145
Published: Aug. 28, 2024
Designing
nonprecious
metal
anode
catalysts
for
photoassisted
direct
methanol
fuel
cells
(PDMFCs)
remains
a
challenge.
As
semiconductor
catalyst
with
spinel
structure,
NiCo2O4
has
good
catalytic
oxidation
activity
and
photocatalytic
activity,
making
it
highly
promising
non-noble
PDMFCs.
However,
compared
the
noble
catalyst,
photoelectrocatalytic
remained
to
be
improved.
In
this
report,
an
anion
regulation
strategy
was
adopted
improve
electrocatalytic
activity.
Using
CoNi-Aspartic
(CoNi-Asp)
nanorod
as
precursor,
anion-regulated
NiCo2X4
(X
=
O,
S,
Se,
Te)
prepared
by
oxidation,
sulfuration,
selenization,
telluridation
reactions.
The
of
anions
their
effects
on
electronic
intermediate
product,
photoelectric
performance
(X=
systematically
discussed.
Photoelectrochemical
characterization
adsorption
energy
•OH
revealing
volcano-like
correlation
between
in
performance.
narrowest
band
gap
(2.239
eV),
highest
(−3.32
ratio
Co3+/Co2+
(2.19)
ensure
best
NiCo2S4,
under
visible
light
irradiation,
photoresponse
current
density
1.9
A
g–1,
at
0.6
V
up
21.9
g–1.
After
9
h
stability
testing,
retention
rate
80%.
This
report
sheds
idea
rational
design
The Journal of Physical Chemistry C,
Journal Year:
2024,
Volume and Issue:
128(47), P. 20140 - 20147
Published: Nov. 14, 2024
In
this
study,
trimetallic
Au@PdPt
nanoparticles
(NPs)
were
synthesized
by
a
seed-mediated
technique,
possessing
hexoctahedral
(HOH)
Au
core
with
branched
PdPt
alloy
shell.
The
fabrication
process
involved
the
synthesis
of
HOH
NPs
exhibiting
high-index
{651}
facet
as
nanotemplates,
followed
epitaxial
growth
Pd
and
Pt
on
these
to
yield
NPs.
size
composition
well
thickness
shells
(from
2
4,
5,
8
nm)
can
be
precisely
adjusted
varying
quantity
precursors.
catalytic
efficacy
was
significantly
enhanced
through
synergistic
effect
between
Au,
Pd,
Pt,
along
increased
contact
areas
afforded
multibranched
shells.
For
methanol
electro-oxidation,
activity
depends
content
showing
distinctive
volcano-type
pattern.
Remarkably,
[email protected]
demonstrate
optimum
performance
for
oxidation
in
acidic
conditions,
superior
electrocatalytic
properties
compared
commercial
black
catalysts.
Their
ECSA
value,
mass,
specific
activities
are
47.21
m2
g–1,
0.93
A
mg–1,
1.97
mA
cm–2,
respectively.
This
research
exploited
fabricate
catalysts
exceptional
designing
controlling
size,
morphology
