Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 26, 2025
The
inclusion
of
redox
mediators
into
electrocatalytic
systems
facilitates
rapid
electron
shuttling
kinetics
and
boosts
the
overall
catalytic
performance
electrode.
This
approach
overcomes
sluggish
reaction
dynamics
associated
with
direct
transfer,
which
may
be
impeded
by
restricted
analyte
access
to
electrode's
active
sites.
In
contrast
conventional
synthetic
mediators,
naturally
sourced
phytomolecule
rutin
trihydrate
(RT),
extracted
from
apple
juice,
offers
potential
ecological
advantages.
bands
green
chemistry
principles
sustainability
in
electroanalytical
approaches.
current
work
presents
an
eco-friendly
electrochemical
fabricate
a
redox-active
RT-immobilized
MWCNT-infused
PEDOT
hybrid
material-modified
glassy
carbon
electrode
(GCE/MWCNT
+
PEDOT@RT).
developed
showcased
sharp
stable
signal
at
E0
=
0.63
V
vs
Ag/AgCl
no
surface-fouling
characteristics.
efficacious
functionalization
RT
onto
MWCNT
was
corroborated
remarkable
increase
surface
characteristics,
enhanced
responses,
low
charge
transfer
resistance.
GCE/MWCNT
PEDOT@RT
exhibited
highly
selective
sensitive
sensing
responses
toward
toxic
potentially
carcinogenic
hydrazine
(HZ)
via
cyclic
voltammetry
differential
pulse
techniques,
yielding
detection
limit
(DL)
1.02
μM
sensitivity
0.032
μA
μM-1
linear
dynamic
range
between
0
1350
μM.
addition,
method
efficient
for
HZ
real
samples
tanker,
tap,
wastewater
samples,
producing
good
recovery
∼98%.
Chemosensors,
Journal Year:
2023,
Volume and Issue:
11(11), P. 562 - 562
Published: Nov. 11, 2023
This
research
describes
the
modification
of
a
glassy
carbon
electrode
with
spent
coffee
grounds
hydrochar
(HDC)
and
copper
nanoparticles
(CuNPs)
for
simultaneous
determination
hydroxychloroquine
sulfate
(HCS)
bisphenol
A
(BPA).
Scanning
electron
microscopy,
EDS
cyclic
voltammetry
were
used
to
characterize
nanocomposite.
The
analytical
parameters
optimized
sensing
platform
was
applied
HCS
BPA
using
square-wave
(SWV).
For
HCS,
linear
range
from
1.0
μmol
L−1
50
L−1,
an
LOD
LOQ
0.46
1.53
respectively.
BPA,
0.5
10
0.31
1.06
Finally,
developed
electrochemical
sensor
quantification
emerging
contaminants
in
natural
water,
recoveries
between
94.8%
106.8%
99.6%
105.2%
BPA.
Therefore,
HDC-CuNPs
demonstrated
themselves
be
good
alternative
as
sustainable
cheaper
material
application
electroanalyses.
