Corrosion Reviews,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 13, 2024
Abstract
Iron
corrosion
in
acidic
environments
poses
a
significant
challenge
various
industries.
This
study
explores
the
relationship
between
theoretical
parameters
and
experimental
data
for
organic
inhibitors
applied
to
iron
surfaces
1
M
HCl
solution
at
25
°C.
The
review
analyzes
studies
employing
techniques,
primarily
Electrochemical
Impedance
Spectroscopy
(EIS),
assess
inhibitor
efficiency
(IE%).
Key
like
E
binding
(interaction
strength)
Δ
N
(electron
transfer)
are
investigated
their
ability
predict
IE%.
findings
reveal
strong
correlation
IE%
,
suggesting
potential
of
as
reliable
predictor
performance
before
experimentation.
While
demonstrates
promise
evaluating
effectiveness,
further
validation
is
necessary.
Furthermore,
emphasizes
possibility
using
single
standardized
method
EIS
evaluation
due
consistent
results
observed
across
with
conditions.
Additionally,
influence
factors
molecular
structure,
surface
interactions,
temperature
on
effectiveness
highlighted.
Higher
concentrations
lower
temperatures
generally
resulted
improved
inhibition.
underscores
importance
combined
approach
development
efficient
optimized
environments.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: June 18, 2024
Abstract
This
study
evaluated
Aloe
vera
extract
as
a
green
inhibitor
to
prevent
corrosion
in
seawater
environments.
A.
was
produced
by
maceration
with
methanol–water
at
room
temperature.
Electrochemical
techniques
were
used
evaluate
the
effectiveness
of
extract.
The
morphology
products
analyzed
FE-SEM
equipped
EDS
and
AFM.
FT-IR
LCMS
characterized
functional
structural
groups
this
electrochemical
measurements
show
that
could
effectively
reduce
API
5L
steel
Inhibition
efficiency
(IE)
increases
increasing
concentration.
Optimal
inhibition
around
83.75%
(PDP)
88.60%
(EIS)
obtained
adding
300
mg
L
−1
310
K.
Furthermore,
higher
concentration
extract,
greater
activation
energy
(E
),
highest
being
48.24
kJ
mol
for
.
Conversely,
temperature
exposure
duration
reduces
values;
best
period
30
min
88.34%
IE
is
achieved
adsorption
process
bioactive
on
metal
surfaces
mixed
through
physisorption-chemisorption
mechanism.
finding
confirmed
smoother
surface
treated
than
without.
unveiling
investigation
found
has
potential
be
an
environmentally
friendly
environment.
Journal of Dispersion Science and Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 17
Published: Nov. 5, 2024
This
study
investigates
the
inhibitory
effects
of
poly(4-vinyl
pyridine)
(P4VP)
and
polyvinylpyrrolidone
(PVP)
on
corrosion
low
carbon
steel
(LCSt)
in
1
M
H2SO4.
Protection
efficacy
(%PE)
was
measured
using
mass
loss,
potentiodynamic
polarization,
electrochemical
impedance
spectroscopy
(EIS).
Results
showed
%PE
values
increased
with
higher
polymer
concentration
lower
temperature.
At
450
mg/L,
reached
93.13%
94.19%
for
P4VP
PVP,
respectively.
These
polymers
function
as
mixed
inhibitors,
adsorbing
onto
LCSt
surface
per
Langmuir's
model
a
mode
physical
adsorption.
EIS
indicated
that
charge
transfer
resistance
decreased
effective
double-layer
capacitance.
Both
PVP
also
reduced
pitting
chloride-containing
solutions.
Density
Functional
Theory
(DFT)
Time-Dependent
DFT
(TD-DFT)
optimized
molecular
structures
evaluating
electronic
parameters
such
frontier
orbital
(FMO)
energies,
energy
gap,
softness,
hardness,
electron
fraction,
dipole
moment,
hyperpolarizability
(β°).
Monte
Carlo
(MC)
dynamics
(MD)
simulations
provided
insights
into
adsorption
mechanisms,
corroborating
experimental
findings
highlighting
effect
protonation.
comprehensive
enhances
our
understanding
relationship
between
structure
improving
their
application
protection.
Case Studies in Chemical and Environmental Engineering,
Journal Year:
2024,
Volume and Issue:
10, P. 100795 - 100795
Published: June 13, 2024
This
work
investigates
the
preventive
effect
of
Tinospora
cordifolia
extract
on
biocorrosion
induced
by
Pseudomonas
aeruginosa
mild
steel
API
5L
in
simulated
seawater
medium.
Electrochemical
techniques,
spectroscopic
and
surface
analysis
were
employed
to
investigate
biocide
performance
corrosion
behavior.
P.
has
been
shown
enhance
iron
dissolution
These
findings
point
role
bacteria
forming
differential
oxygen,
which
causes
corrosion.
Morphology
results
from
atomic
Fourier
microscopy
(AFM)
highlight
presence
biotic
environments,
where
is
rougher
than
abiotic
conditions.
On
other
hand,
adding
T.
medium
resulted
a
smoother
more
homogeneous
without
any
significant
deterioration.
reveal
that
300
mg.L-1
prevents
microbiologically
influenced
(MIC)
5L,
with
an
optimum
effectiveness
value
74.50%
after
21
days
incubation.
protective
caused
compact
oxide
layer
adsorption
phenolic
active
compounds
such
as
Moupinamide
others
detected
liquid
chromatography-mass/spectrometry-mass
spectrometry
(LCMS-MS),
Fourier-transform
infrared
spectroscopy
(FTIR)
field
emission
scanning
electron
(FE-SEM)
techniques.
