Ternary PdIrNi Telluride Amorphous Mesoporous Nanocatalyst for Efficient Electro-Oxidation of Ethylene Glycol
Catalysts,
Год журнала:
2025,
Номер
15(2), С. 143 - 143
Опубликована: Фев. 4, 2025
The
development
of
efficient
electrocatalysts
for
the
complete
oxidation
ethylene
glycol
(EG)
is
crucial
enhancing
practicality
direct
EG
fuel
cells
(DEGFCs).
However,
significant
challenges
persist
in
developing
highly
active
Pd-based
catalytic
electrodes.
In
this
work,
PdIrNi
ternary
telluride
nanospheres
(PdIrNiTe-MNSPs)
with
mesoporous
morphology
and
an
amorphous
structure
were
successfully
synthesized
applied
electrocatalytic
reaction.
Brunauer–Emmett–Teller
analysis
revealed
typical
characteristics,
a
surface
area
8.33
m2·g−1
total
pore
volume
0.055
cm3·g−1,
respectively.
Transmission
electron
microscopy
characterization
showed
that
outer
layer
PdIrNiTe-MNSPs
entirely
structure.
Electrochemical
tests
demonstrated
exhibit
enhanced
specific
activity
(16.75
mA·cm−2)
mass
(1372.22
mA·mg−1)
reaction
(EGOR),
achieving
3.17
2.09
times
higher
than
commercial
Pd/C,
which
can
be
attributed
to
its
unique
nanoarchitecture
optimized
configuration.
situ
spectroscopy
incorporation
IrNi,
facilitate
C-C
bond
cleavage
EG,
selectivity
(≈93%)
oxidizing
C1
products,
while
PdTe-MNSPs
glycolic
acid
EGOR.
Taken
together,
work
provides
new
insights
into
application
nanomaterials
electrocatalysis
Язык: Английский
Surfactant-Assisted Synthesis of Polycrystalline Binary PdBi Alloy Nanoparticles for Ethanol Electrooxidation
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 18, 2025
The
morphology
and
compositional
modulation
of
palladium-based
nanomaterials
are
paramount
importance
in
enhancing
the
catalytic
performance
ethanol
oxidation
reaction
(EOR).
In
this
study,
we
employed
a
simple
oil
bath
method
to
synthesize
PdBi
alloy
nanoparticles
(NPs),
maintaining
same
elemental
ratio.
size
NPs
could
be
modulated
by
varying
surfactant
dosage.
synthesized
alloys
exhibited
alterations
d-band
center
Pd,
which
were
attributed
strain
ligand
effects.
These
subsequently
affected
adsorption
energy
catalyst
surface
for
intermediates.
current
density
Pd9Bi/200
NP
was
found
as
high
1042.0
mA
mg-1,
is
approximately
twice
that
Pd/C
(508.0
mg-1).
This
enhanced
activity
can
modification
electronic
structure
morphology,
enables
material
possess
larger
electrochemically
active
area
(ESCA),
thus
providing
substantial
number
sites
reaction.
Furthermore,
experimental
data
indicated
increasing
electrocatalytic
temperature,
pH,
concentration
accelerate
electrooxidation
rate
EOR.
study
presents
an
effective
approach
investigating
role
surfactants
synthesis
stability
noble
metal
catalysts.
Язык: Английский
Improved Ethylene Glycol Electro-Oxidation Using xPtyPd Electrocatalysts on Aza-BODIPY-Modified Carbon Black
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 29, 2025
This
study
presents
an
innovative
approach
for
synthesizing
bimetallic
platinum
(Pt)
and
palladium
(Pd)
electrocatalysts
supported
on
aza-boron-dipyrromethene
(aza-BODIPY,
or
DP)-modified
carbon
black
(DP-C)
to
enhance
the
catalytic
oxidation
of
ethylene
glycol
(EG)
in
alkaline
media.
DP
as
a
modifier
optimizes
interaction
between
active
metal
nanoparticles
support,
improving
activity.
Pt
Pd
alloy
were
electrodeposited
DP-C
via
cyclic
voltammetry
(CV),
forming
catalyst
denoted
xPtyPd/DP-C.
The
catalysts
characterized
by
transmission
electron
microscopy
(TEM),
X-ray
diffraction
(XRD),
photoelectron
spectroscopy
(XPS),
revealing
spherical
with
varying
surface
areas.
Electrochemical
tests,
including
CV,
chronoamperometry
(CA),
electrochemical
impedance
(EIS),
show
that
xPtyPd/DP-C
exhibits
superior
EG
performance,
transfer,
CO
resistance,
durability.
mass
specific
activities
PtPdPtPd/DP-C
1.4
1.2
times
higher
than
Pt/C.
Chemical
doping
heteroatoms
tailors
its
properties,
enhancing
performance
support
formation
metals.
work
provides
promising
strategy
developing
high-performance
anode
direct
fuel
cells.
Язык: Английский