Results in Surfaces and Interfaces,
Journal Year:
2024,
Volume and Issue:
16, P. 100268 - 100268
Published: Aug. 1, 2024
This
study
evaluated
UV-radiated
Helichrysum
kraussii
(H.
kraussii)
extract
for
its
corrosion
inhibition
on
aluminium
in
1.0
M
HCl.
To
achieve
this,
techniques
such
as
Liquid
chromatography-mass
spectrometry
(LC-MS),
Fourier
transform
infrared
spectroscopy
(FTIR),
Gravimetric
analysis,
electrochemical
analysis
looking
at
impedance
(EIS)
and
potentiodynamic
polarization
(PDP),
contact
angle
computational
studies
were
used.
The
results
obtained
from
these
made
it
possible
to
conclude
the
performance
of
H.
a
inhibitor
metal.
LC-MS
FTIR
proved
that
exposure
UV
radiation
caused
change
composition
metabolites,
demonstrated
by
increase
number
peaks
chromatogram
shift
spectrum.
Weight
loss
technique
showed
inhibited
with
maximum
percentage
84.6948
%
concentration
1500
ppm
30
°C.
adsorption
molecules
metal
surface
was
found
obey
Langmuir
isotherm,
activation
energy
values
mechanism
through
physisorption.
Nyquist
plots
semi-circles
an
concentration,
showing
efficiency.
Tafel's
plot
both
anodic
cathodic
inhibited.
DFT/PBE/GGA/DNP
investigation
binding
energies
inhibitors
suggest
Al···FA
interaction
happens
physical
adsorption.
The
corrosion
inhibition
behavior
of
cetyl
pyridinium
chloride
(CPC)
on
mild
steel
(MS)
in
0.5
M
H2SO4
solution
was
examined
using
the
weight
loss
method
and
potentiodynamic
polarization
method.
experimented
MS
surface
characterized
by
Fourier
Transform
Infrared
Spectroscopy
(FTIR),
Field
Emission
Scanning
Electron
Microscopy
(FESEM),
Atomic
Force
(AFM).
Corrosion
rate
efficiency
calsulated
via
methods
where
,
0.000192
M,
0.0077
CPC
12.09×10-3,
8.23×10-3,
6.63×10-5
(mm/Year),
respectively
94.42%
98.54%.
FESEM
studies
demonstrated
attack
surface.
Also,
EDX
showed
presence
nitrogen
CPC.
Thus,
acts
as
an
important
inhibitor.
Results in Surfaces and Interfaces,
Journal Year:
2024,
Volume and Issue:
16, P. 100268 - 100268
Published: Aug. 1, 2024
This
study
evaluated
UV-radiated
Helichrysum
kraussii
(H.
kraussii)
extract
for
its
corrosion
inhibition
on
aluminium
in
1.0
M
HCl.
To
achieve
this,
techniques
such
as
Liquid
chromatography-mass
spectrometry
(LC-MS),
Fourier
transform
infrared
spectroscopy
(FTIR),
Gravimetric
analysis,
electrochemical
analysis
looking
at
impedance
(EIS)
and
potentiodynamic
polarization
(PDP),
contact
angle
computational
studies
were
used.
The
results
obtained
from
these
made
it
possible
to
conclude
the
performance
of
H.
a
inhibitor
metal.
LC-MS
FTIR
proved
that
exposure
UV
radiation
caused
change
composition
metabolites,
demonstrated
by
increase
number
peaks
chromatogram
shift
spectrum.
Weight
loss
technique
showed
inhibited
with
maximum
percentage
84.6948
%
concentration
1500
ppm
30
°C.
adsorption
molecules
metal
surface
was
found
obey
Langmuir
isotherm,
activation
energy
values
mechanism
through
physisorption.
Nyquist
plots
semi-circles
an
concentration,
showing
efficiency.
Tafel's
plot
both
anodic
cathodic
inhibited.
DFT/PBE/GGA/DNP
investigation
binding
energies
inhibitors
suggest
Al···FA
interaction
happens
physical
adsorption.