Journal of The Electrochemical Society,
Journal Year:
2021,
Volume and Issue:
168(6), P. 067526 - 067526
Published: June 1, 2021
Cadmium
ion
(Cd2+)
is
one
of
the
toxic
heavy
metals
in
environment.
Even
small
amounts
Cd2+
may
cause
environmental
pollution
and
threaten
human
life
health.
Here,
an
electrochemical
sensor
for
detection
was
established
using
a
complex
carbon
fiber
paper
(CFP),
CoMOF,
AuNPs,
glutathione
as
conductive
substrate
(CFP/CoMOF/AuNPs/GSH).
Compared
with
traditional
methods
detection,
electrochemistry
owns
advantages
high
sensitivity,
easy
miniaturization,
portability.
In
addition,
general
replaced
by
new
nanomaterial,
CFP/CoMOF/AuNPs/GSH,
which
improves
performance
greatly.
presence
Cd2+,
GSH
chelated
to
resulting
redox
peak
appearing
around
−0.84
V.
Thus,
sensitive
easily
portable
has
been
developed.
Under
optimal
conditions,
achieves
low
1
nM.
Selectivity
reproducibility
experiments
show
that
good
analytical
performance.
This
provides
direction
use
detect
metal
ions.
ACS Omega,
Journal Year:
2022,
Volume and Issue:
7(23), P. 20405 - 20419
Published: June 1, 2022
A
novel
electrochemical
sensor
for
determining
trace
levels
of
Hg2+,
Pb2+,
and
Zn2+
ions
in
water
using
square
wave
voltammetry
(SWV)
is
reported.
The
based
on
a
platinum
electrode
(Pt)
modified
by
poly(3,4-ethylenedioxythiophene)
Nα,Nα-bis-(carboxymethyl)-l-lysine
hydrate
(NTA
lysine)
PEDOT/NTA.
surface
(PEDOT/NTA)
was
prepared
via
the
introduction
lysine-NTA
group
to
PEDOT/N-hydroxyphthalimide
NHP
electrode.
characterized
cyclic
(CV),
Fourier
transform
infrared
(FTIR)
spectroscopy,
scanning
electron
microscopy
(SEM).
effects
scan
rates
properties
polymer
were
also
investigated.
results
used
estimate
coverage
its
electrostability
background
electrolyte
solutions.
Several
analytical
parameters,
such
as
film
thickness,
metal
deposition
time,
pH
electrolyte,
examined.
Linear
responses
concentration
range
5-100
μg
L-1
obtained.
limits
detection
(LODs)
determination
1.73,
2.33,
1.99
L-1,
respectively.
These
promising
revealed
that
PEDOT/NTA
films
might
well
represent
an
important
addition
existing
technologies.
Analytical Sciences,
Journal Year:
2021,
Volume and Issue:
38(1), P. 55 - 70
Published: Nov. 25, 2021
A
variety
of
organic
and
inorganic
pollutants
in
water
environments
pose
threats
to
human
health.
Therefore,
it
is
critical
develop
effective
techniques
determine
monitor
the
levels
contamination.
Compared
traditional
detection
methods,
electrochemical
sensors
have
advantages
high
sensitivity,
low
limits,
good
selectivity.
In
this
review,
we
summarize
progress
made
from
2000
2020
regarding
development
capable
detecting
typical
different
environments.
Since
concentrations
contaminants
(antibiotics
pesticides)
are
often
very
(generally
at
nmol
level),
further
improvements
electrode
sensitivity
limit
will
be
necessary.
We
also
found
that
more
detailed
cost
analysis
materials
needed
support
future
production
applications.
When
apply
detect
real
samples,
anti-interference
sensor
componentization
need
enhanced.
Besides,
although
groundwater
serves
as
main,
or
only,
source
drinking
many
areas,
current
studies
on
limited.
hope
review
provide
new
ideas
for
contaminant
sensors.
ACS Omega,
Journal Year:
2022,
Volume and Issue:
7(4), P. 3823 - 3833
Published: Jan. 19, 2022
Carboxyl
(-COOH)-stabilized
iron
oxide
nanoparticles
(IONPs)
synthesized
through
co-precipitation
were
used
to
modify
an
indium
tin
(ITO)
electrode,
which
was
chemically
functionalized
with
3-aminopropyltriethoxysilane
(APTES)
for
heavy
metal
detection.
The
effect
of
soaking
time
(30,
60,
90,
and
120
min)
IONP-COOH
self-assembled
on
APTES-ITO
electrode
studied.
Cyclic
voltammetry
scanning
electron
microscopy
applied
analyze
the
electrochemical
properties
morphologies
IONP-COOH/APTES-ITO
modified
electrode.
electrodes
then
employed
simultaneous
detection
Cd(II)
Pb(II)
by
using
square
wave
anodic
stripping
voltammetry.
At
90
min
time,
excellent
performance
larger
effective
surface
area
(
