Transition Metal Oxides (WO3-ZrO2) as Promoters and Hydrogen Adsorption Modulators in Pt/WO3-ZrO2-C Electrocatalyst for the Reduction of NOx
Electrochem,
Journal Year:
2025,
Volume and Issue:
6(1), P. 7 - 7
Published: March 5, 2025
The
electrocatalytic
reduction
of
nitric
oxide
and
nitrogen
dioxide
(NOx)
remains
a
significant
challenge
due
to
the
need
for
stable,
efficient,
cost-effective
materials.
This
study
presents
novel
support
system
NOx
in
alkaline
media,
composed
ZrO2-WO3-C
(ZWC),
synthesized
via
coprecipitation.
Platinum
nanoparticles
(10
wt.%)
were
loaded
onto
ZWC
Vulcan
carbon
support,
using
similar
methods
comparison.
Comprehensive
physicochemical
electrochemical
analyses
(N2
physisorption,
XRD,
XPS,
SEM,
TEM,
cyclic
linear
voltammetry)
revealed
that
PtZWC
outperformed
PtC
commercial
PtEtek
electrocatalysis.
Notably,
exhibited
highest
total
electric
charge
reduction.
At
same
time,
hydrogen
evolution
reaction
(HER)
was
shifted
more
negative
cathodic
potentials,
indicating
reduced
coverage
modified
dissociative
Tafel
mechanism
on
platinum.
Additionally,
combination
WO3
ZrO2
enhanced
electron
transfer
suppressed
HER
by
reducing
NO
atom
adsorption
competition.
While
incorporation
lowered
surface
area
96
m2/g,
it
significantly
improved
pore
properties,
facilitating
better
Pt
nanoparticle
dispersion
(3.06
±
0.85
nm,
as
confirmed
SEM
TEM).
XRD
analysis
identified
graphite
phases,
with
monoclinic
broadening
peaks
(20–25°).
XPS
oxidation
states
Pt,
W,
Zr
tungsten-related
oxygen
vacancies,
ensuring
chemical
stability
catalytic
activity.
Language: Английский
A self-powered nerve conduit based on zinc-oxygen battery accelerates nerve cell growth
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Journal Year:
2025,
Volume and Issue:
unknown, P. 137225 - 137225
Published: May 1, 2025
Language: Английский
Fabrication of pyridine incorporated and O-dopped g-C3N4/COF: A type-II heterojunction for enhanced hydrogen production under visible light irradiation
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Journal Year:
2024,
Volume and Issue:
unknown, P. 125057 - 125057
Published: Oct. 1, 2024
Language: Английский
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Journal Year:
2024,
Volume and Issue:
unknown, P. 101962 - 101962
Published: Dec. 1, 2024
Language: Английский