Advances in Natural Sciences Nanoscience and Nanotechnology,
Journal Year:
2024,
Volume and Issue:
16(1), P. 015007 - 015007
Published: Dec. 31, 2024
Abstract
MnCo
2
O
4
nanorods
(MCO)
are
successfully
fabricated
by
microwave-assisted
hydrothermal
method.
MCO
is
coated
on
the
commercial
screen-printed
electrode
(SPE),
aiming
for
effective
detection
of
copper
(II)
ions
(Cu
2+
).
The
morphological
and
structural
characteristics
investigated
through
x-ray
diffraction
(XRD),
Raman
spectra,
scanning
electron
microscope
(SEM)
analysis.
Besides,
electrochemical
properties
performance
to
detect
Cu
modified
(MCO/SPE)
studied
in
detail
using
impedance
spectroscopy
(EIS),
cyclic
voltammetry
(CV),
differential
pulse
anodic
stripping
(DPASV)
measurements.
results
show
MCO/SPE
display
magnificent
enhancements
dynamic
linear
range,
sensitivity,
limit
(LOD),
selectivity,
stability.
Under
optimized
conditions,
prepared
sensor
had
a
range
0.001–100
μM,
corresponding
LOD
0.72
nM.
Notably,
achieved
point
out
great
potential
developed
based
heavy
metal
ion
detection.
Chemosensors,
Journal Year:
2024,
Volume and Issue:
12(6), P. 103 - 103
Published: June 6, 2024
The
utilization
of
bismuth
as
a
sensing
material
for
the
detection
heavy
metal
ions
has
gained
significant
attention
due
to
its
exceptional
interfacial
activity
and
selective
absorption
properties.
However,
it
also
poses
challenges
in
terms
agglomeration
inferior
electrical
conductivity
during
synthesis
process.
This
paper
employed
facile
situ
electrodeposition
approach
uniformly
grow
film
on
conductive
carbon
cloth,
designated
Bi/Ag@CC.
Bi/Ag@CC
electrode
exhibited
benign
electrochemical
properties,
enabling
application
detecting
Pb2+
tap
water
lake
samples.
Furthermore,
this
work
investigated
impact
parameters,
including
electrolyte
pH,
deposition
potential
pre-enrichment
time,
performance.
results
demonstrated
sensor’s
wide
linear
range
(from
20
400
ppb)
limits
(0.15
ion
detection,
along
with
excellent
anti-interference
capabilities
satisfactory
repeatability,
an
RSD
less
than
2.31%
(n
=
6).
offers
novel
strategy
positioning
bismuth-based
composite
promising
candidate
practical
applications.
Journal of The Electrochemical Society,
Journal Year:
2024,
Volume and Issue:
171(6), P. 067506 - 067506
Published: June 3, 2024
An
electrochemical
sensor
based
on
eco-friendly
green
synthesized
silver
nanoparticles
decorated
reduced
graphene
oxide
(AgNPs-rGO)
modified
screen-printed
carbon
electrode
(SPCE)
for
the
simultaneous
detection
of
serotonin
(5-HT)
and
dopamine
(DA)
is
reported
first
time.
The
experimental
parameters
affecting
performance
were
optimized
in
terms
AgNPs-rGO
coating
amount,
scan
rate
electrolyte
pH
(6–8).
Under
optimal
conditions,
AgNPs-rGO/SPCE
was
employed
to
individually
determine
both
analytes
using
DPV
technique.
also
efficient
these
species
well-resolved
oxidation
peaks
with
a
linear
range
10–100
μ
M
limits
7
7.41
M,
respectively.
developed
device
showed
good
selectivity,
reproducibility,
repeatability.
Furthermore,
it
successfully
applied
determination
biomolecules
artificial
urine
samples
recovery.
main
advantages
designed
are
its
simplicity,
portability,
low
cost.
