Jurnal Kimia Sains dan Aplikasi,
Journal Year:
2024,
Volume and Issue:
27(12), P. 569 - 579
Published: Dec. 19, 2024
This
research
investigates
the
thermodynamic
characteristics
of
chitosan
as
a
corrosion
inhibitor
for
carbon
steel
in
chloride
electrolyte
environments,
specifically
saturated
sodium
and
1
M
hydrochloric
acid,
across
different
temperatures
concentrations.
The
study
aimed
to
evaluate
effectiveness
preventing
examine
adsorption
process.
results
revealed
that
achieved
highest
inhibition
efficiency
90.07%
acid
solution
with
concentration
250
mg/L
at
303.15
K.
In
contrast,
maximum
was
50.50%
same
Thermodynamic
analysis
showed
is
spontaneous
exothermic
both
media.
standard
free
energy
found
be
-38.63
kJ/mol
K,
decreasing
-43.69
343.15
K
NaCl,
-42.40
-48.65
HCl.
enthalpy
-0.24976
NaCl
4.93560
HCl,
while
entropy
-0.12661
J/mol·K
-0.15610
Additionally,
activation
increased
from
1.61
0
6.96
4.10
23.79
SEM
confirms
formation
protective
film,
significantly
reducing
damage
compared
uninhibited
conditions.
These
findings
indicate
highly
effective
favorable
applications
chloride-containing
environments.
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(2), P. 561 - 561
Published: Jan. 10, 2025
Nowadays,
the
development
of
plant
extracts
as
corrosion
inhibitors
to
protect
metals
from
is
a
popular
research
direction.
However,
given
vast
diversity
species
in
nature,
it
imperative
explore
effective
methods
improve
screening
efficiency
order
quickly
identify
inhibition
potential
plants.
In
this
work,
new
strategy
for
developing
plant-extracted
eco-friendly
based
on
family
and
genus
plants
proposed.
Three
different
genera
Asteraceae
family,
including
Artemisia
argyi
extract
(AAE),
Chrysanthemum
indicum
(CIE),
Centipeda
minima
(CME),
were
selected
successfully
prepared
novel
Q235
steel
sulfuric
acid
solution.
The
behavior
corresponding
mechanism
systematically
investigated
by
using
some
electrochemical
tests
(open
circuit
potential,
potentiodynamic
polarization,
impedance
spectroscopy)
surface
characterizations
(Fourier
transform
infrared
spectroscopy,
scanning
electron
microscopy,
X-ray
photoelectron
spectroscopy).
experimental
results
illustrated
that
main
components
three
similar
when
combined
with
KI
mixed-type
inhibitors,
they
could
dramatically
slow
down
metal
rate.
maximum
value
reached
96.29%,
96.50%,
97.52%,
respectively,
at
200
mg/L
increase
98.64%,
97.65%,
99.06%,
prolonged
immersion
time.
A
synergistic
effect
exists
between
KI,
leading
firm
adsorption
molecules
onto
surface,
thereby
forming
robust
protective
film.
This
work
demonstrated
possessed
capabilities,
providing
way
select
numerous
classification.
Technologies,
Journal Year:
2025,
Volume and Issue:
13(3), P. 103 - 103
Published: March 5, 2025
This
review
examines
recent
advances
in
corrosion
inhibitor
technologies,
with
a
focus
on
sustainable
and
environmentally
friendly
solutions
that
address
both
industrial
efficiency
environmental
safety.
Corrosion
is
ubiquitous
problem,
contributing
to
massive
economic
losses
globally,
costs
estimated
between
1
5%
of
GDP
different
countries.
Traditional
inorganic
inhibitors,
while
effective,
are
often
based
toxic
compounds,
necessitating
the
development
more
non-toxic
alternatives.
The
present
work
highlights
innovative
eco-friendly
inhibitors
derived
from
natural
sources,
including
plant
extracts
oils,
biopolymers,
etc.,
being
biodegradable
substances
provide
effective
resistance
minimal
impact.
In
addition,
this
explores
organic–inorganic
hybrid
nanotechnology-enhanced
coatings
demonstrate
improved
efficiency,
durability,
adaptability
across
industries.
Key
considerations,
such
as
application
techniques,
mechanisms
action,
impact
factors
performance,
discussed.
comprehensive
presentation
aims
contribute
updating
data
advanced
capable
meeting
requirements
modern
industries
promoting
safe
practices
management.
Advanced Materials Technologies,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 6, 2025
Abstract
Metals
are
prone
to
corrosion,
so
the
development
of
efficient
intelligent
protective
coatings
has
become
a
major
demand.
In
recent
years,
researchers
have
made
significant
progress
in
anti‐corrosion
field.
Intelligent
can
precisely
release
required
healing
agents
or
change
solid–liquid
phase
transition
response
external
stimuli,
such
as
pH,
temperature,
and
redox,
achieving
anti‐corrosion.
This
review
summarized
classifications
coatings,
discussed
triggering
mechanisms
explored
corrosion
inhibitors
for
aiming
provide
reference
further
development.
Metals,
Journal Year:
2025,
Volume and Issue:
15(2), P. 195 - 195
Published: Feb. 13, 2025
This
work
presents
a
comparative
study
of
five
rare
earth
compounds—Erbium
nitrate
pentahydrate
lll
(Er),
Neodymium
(Nd),
Samarium
III
Nitrate
Hexahydrate
(Sm),
Yterbium
Chloride
(Yb)
and
Praseodymium
hexahydrate
(Pr)—protecting
API
5L
X70
steel
from
corrosion
in
saline
medium
that
uses
electrochemical
impedance
spectroscopy
(EIS)
polarization
curves
(CPs)
at
different
concentrations
static
mode.
The
results
show
Erbium
is
the
best
inhibitor,
containing
50
ppm
reaching
an
inhibition
efficiency
about
89%,
similar
result
was
shown
by
Sm
with
IE~87.9%,
while
other
earths
(Nd,
Yb
Pr)
showed
decrease
protection
same
concentration,
since
they
were
below
IE~80%.
On
hand,
Langmuir
model
it
possible
to
describe
adsorption
process
three
follows
combined
physisorption–chemisorption
protect
metal’s
surface.
observed
free
energy,
ΔG°ads,
reaches
−38.7
kJ/mol
for
Er,
−34.4
Nd,
−33.6
Pr;
whereas
have
energies
−33.9
−35.0
kJ/mol,
respectively.
Scanning
electron
microscopy
(SEM)
atomic
force
(AFM)
further
confirmed
formation
protective
film.
Their
characterization
using
density
functional
theory
transference
charge
iron
cluster
towards
metal
compounds.
produced
slightly
polarized
region
interaction
Also,
found
affected
magnetic
properties
surface
cluster.
Quantum
chemical
descriptors,
such
as
Pearson’s
HSAB
(Hard
Soft
Acids
Bases)
useful
predicting
behavior
flow
electrons
between
interacting
ions.
