ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(28), P. 30583 - 30593
Published: July 1, 2024
Platinum
nanoparticles
are
widely
used
in
electrocatalysis
and
sensors.
In
this
work,
a
novel
modified
carbon
paste
electrode
based
on
PANI-TiO2/Pt
nanocomposites
was
developed
electrochemically.
To
improve
the
performance
of
composite-modified
electrode,
Taguchi
orthogonal
array
for
experimental
design,
best
values
factors
affecting
were
determined
using
technique
order
preference
by
similarity
to
ideal
solution
(TOPSIS)
optimization
methods.
The
electrochemical
catalytic
activities
oxidation
nitrite
calculated
analysis.
results
demonstrate
that
has
pretty
excellent
electrocatalytic
ability
nitrite.
sensing
performances
proposed
evaluated,
including
linear
detection
range,
sensitivity,
LOD,
selectivity,
stability
sensing.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 3, 2025
By
utilizing
carboxylated
multiwalled
carbon
nanotubes
(MWCNT-COOH)
to
strengthen
the
interaction
between
electrode
and
analytes
improve
conductivity
of
composite
material
in
conjunction
with
superior
catalytic
properties
copper-based
metal-organic
framework
(MOFs),
a
novel
electrochemical
sensor
was
fabricated
from
Cu-MOF/MWCNT-COOH
composite,
specifically
designed
for
simultaneous
distinct
detection
ascorbic
acid
(AA)
dopamine
(DA).
Electrochemical
analyses
were
conducted
on
innovative
through
both
CV
DPV,
revealing
unique
behaviors
AA
DA.
The
not
only
showed
exceptional
electrocatalytic
but
also
distinguished
itself
by
its
broad
dynamic
response
ranges,
covering
concentrations
3
1800
μM
2
180
DA,
limits
(S/N
=
3)
3.00
0.32
Furthermore,
this
platform
exhibited
robust
reproducibility
selectivity.
Examinations
serum
samples
yielded
recovery
rates
DA
which
101.9%
102.1%,
respectively,
confirming
sensor's
capability
perform
reliably
under
varied
biological
conditions.
findings
confirm
potential
proposed
method
simultaneous,
sensitive,
reliable
In
conclusion,
has
promising
practical
applications.
Nanoscale,
Journal Year:
2024,
Volume and Issue:
16(29), P. 13915 - 13924
Published: Jan. 1, 2024
p-Nitrophenol
(p-NP)
is
known
as
a
common
contaminant
found
in
wastewater,
agricultural
runoff,
and
industrial
effluents
which
can
degrade
water
quality
cause
potential
carcinogenic
toxic
effects
on
the
human
body.
Its
detection
essential
for
public
health,
safety,
environmental
protection,
regulatory
compliance,
underscoring
its
broad
applicability.
In
this
study,
novel
electrochemical
sensor
based
polypyrrole
(PPy)
flowers
assembled
via
nanotubes
was
developed
sensitive
determination
of
p-NP.
The
nickel
(Ni)
foam
modified
with
PPy
functioned
working
electrode
showed
selectivity
toward
p-NP
phosphate
buffer
medium
at
pH
7.0.
Cyclic
voltammetry
(CV)
differential
pulse
(DPV)
techniques
were
utilized
Under
optimum
conditions,
peak
currents
DPV
versus
concentrations
range
0.01-20
nM
good
linear
relationship
(R2
=
0.9943),
limit
(LOD)
calculated
to
be
7.18
pM
(signal-to-noise
ratio
3,
S/N
3).
fabricated
exhibited
high
sensitivity,
low
limit,
response
time.
recoveries
real
samples
groundwater
tap
using
Fls/Ni
91.0-108.4%
relative
standard
deviation
(RSD)
6.65%.
Consequently,
could
applied
rapid,
precise,
platform
aqueous
quantification
determination.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 24, 2025
In
recent
years,
flexible
pressure
sensors
have
played
an
increasingly
important
role
in
human
health
monitoring.
Inspired
by
traditional
papermaking
techniques,
we
developed
a
highly
flexible,
low-cost,
and
ecofriendly
sensor
using
shredded
paper
fibers
as
the
substrate.
By
combining
properties
of
laser-induced
graphene
with
structure
fibers,
improved
internal
pressure-sensitive
designed
conical
surface
microstructure,
providing
new
insights
into
nanomaterial
engineering.
It
features
low
resistance
(424.44
Ω),
energy
consumption
only
0.367
μW
under
1.96
kPa,
high
sensitivity
(1.68
kPa-1),
wide
monitoring
range
(98
Pa-111.720
kPa).
The
microstructure
(MFTG)
this
study
has
total
thickness
comparable
to
A4
paper,
is
soft
bendable,
can
be
cut
any
shape
like
fit
body,
holds
great
potential
for
continuous
activity
status
physiological
information.
