Journal of The Electrochemical Society,
Год журнала:
2024,
Номер
171(11), С. 117517 - 117517
Опубликована: Ноя. 1, 2024
A
simple
voltammetric
procedure
for
direct
determination
of
nitrites
in
natural
water
samples
is
described.
Measurements
are
carried
out
an
inert
medium
0.1
M
KCl.
The
based
on
the
oxidation
N(III)
to
N(V)
as
a
result
change
electrode
potential
from
+0.40
V
+0.96
V.
use
combined
consisting
approximately
800
gold
microelectrodes
enables
undisturbed
determinations
be
performed
presence
high
concentrations
organic
compounds
at
level
20
mg
l
−1
.
calibration
plot
NO
2
−
was
linear
range
×
10
−6
8
−4
with
detection
limit
6
−7
M.
proposed
successfully
applied
nitrate
three
passable
results.
Journal of The Electrochemical Society,
Год журнала:
2024,
Номер
171(9), С. 097504 - 097504
Опубликована: Авг. 12, 2024
In
the
present
work,
a
simple
and
effective
hydrothermal
method
has
been
used
to
synthesize
nanocomposite
of
nickel
oxide
molybdenum
disulphide.
Structural
optical
characterizations
as-synthesised
MoS
2
/NiO
nanoparticles
were
carried
out
using
X-ray
diffraction
(XRD)
UV-visible
spectroscopy
techniques.
The
major
peaks
NiO
detected
in
XRD,
confirming
formation
composite.
reduced
band
gap
2.84
eV
MoS2/NiO
nanocomposite,
as
compared
pure
with
3.1
bandgap,
indicates
blue
shift.
surface
morphology
was
measured
field-emission
scanning
electron
microscopy,
showing
sheet-like
structure
fine
particles
overlaid
on
them.
Cyclic
voltammetry
electrochemical
impedance
(EIS)
determine
processes
charge
transfer
between
electrodes,
diffusion
molecules
ions
within
electrolyte
solution,
ion
adsorption
electrode.
as-prepared
composite
shows
an
enhanced
specific
capacitance
246
F
g−1
at20
mV
sec−1,
scan
rate
which
more
than
both
base
materials
pristine
form.
EIS
results
thus
obtained
may
give
new
direction
for
supercapacitor
applications
as-synthesized
sample.
Journal of The Electrochemical Society,
Год журнала:
2024,
Номер
171(11), С. 117517 - 117517
Опубликована: Ноя. 1, 2024
A
simple
voltammetric
procedure
for
direct
determination
of
nitrites
in
natural
water
samples
is
described.
Measurements
are
carried
out
an
inert
medium
0.1
M
KCl.
The
based
on
the
oxidation
N(III)
to
N(V)
as
a
result
change
electrode
potential
from
+0.40
V
+0.96
V.
use
combined
consisting
approximately
800
gold
microelectrodes
enables
undisturbed
determinations
be
performed
presence
high
concentrations
organic
compounds
at
level
20
mg
l
−1
.
calibration
plot
NO
2
−
was
linear
range
×
10
−6
8
−4
with
detection
limit
6
−7
M.
proposed
successfully
applied
nitrate
three
passable
results.
