Langmuir,
Год журнала:
2024,
Номер
40(45), С. 23683 - 23694
Опубликована: Окт. 29, 2024
The
environmental
friendliness,
economic
feasibility,
and
high
efficiency
of
carbon
quantum
dots
(CQDs)
render
them
as
highly
promising
candidates
for
corrosion
inhibitors.
present
study
proposed
the
fabrication
nitrogen-
sulfur-codoped
CQDs
via
an
one-step
hydrothermal
method
using
l-cysteine
4-aminosalicylic
acid
precursors.
structure,
particle
size,
surface
ligands
prepared
were
determined
through
spectroscopy
transmission
electron
microscopy
characterization.
Subsequently,
inhibition
performance
on
steel
in
a
0.5
M
sulfuric
solution
was
evaluated
weight
loss
measurement,
electrochemical
methods,
analysis.
exhibited
remarkable
efficiencies
97.9%
at
293
K
98.9%
313
K,
with
concentration
150
ppm.
In
addition,
obtained
demonstrated
combined
physisorption
chemisorption
adsorption
behavior,
which
complied
Langmuir
isotherm.
These
findings
provide
insight
into
mechanism
highlight
potential
codoped
mitigation
applications
acidic
environments.
ACS Omega,
Год журнала:
2025,
Номер
10(6), С. 6244 - 6257
Опубликована: Фев. 3, 2025
The
heterocyclic
compound
N-{2-[2-(5-methyl-1H-pyrazol-3-yl)acetamido]-phenyl}benzamide
monohydrate
(MPAPB)
was
synthesized
and
structurally
characterized
by
using
nuclear
magnetic
resonance
(NMR),
mass
spectrometry,
infrared
(IR)
spectroscopy.
Its
corrosion
inhibition
performance
for
C38
in
1
M
HCl
evaluated
gravimetric
weight
loss
measurements,
electrochemical
impedance
spectroscopy
(EIS),
potentiodynamic
polarization
(PDP)
techniques.
MPAPB
demonstrated
a
high
efficiency
of
90.2%
at
concentration
mM,
accompanied
substantial
decrease
the
current
density.
Electrochemical
results
revealed
that
acts
as
mixed-type
inhibitor,
reducing
both
anodic
cathodic
reactions,
while
increasing
charge
transfer
resistance
(R
p)
decreasing
double-layer
capacitance
(C
dl),
indicative
effective
surface
adsorption.
adsorption
behavior
consistent
with
Langmuir
isotherm,
suggesting
combination
physical
chemical
mechanisms.
Density
functional
theory
(DFT)
calculations
molecular
dynamics
(MD)
simulations
further
elucidated
interaction
between
steel
surface,
highlighting
role
electron-donating
heteroatoms
π-electron
systems
These
theoretical
findings
were
agreement
experimental
results,
confirming
formation
protective
layer
inhibits
corrosion.
Water Environment Research,
Год журнала:
2025,
Номер
97(2)
Опубликована: Фев. 1, 2025
Abstract
This
study
investigates
the
efficacy
of
ginger
extract
(GE)
as
a
green
corrosion
inhibitor
in
petrochemical
industry,
specifically
targeting
microbial
carbon
steel
pipes
utilized
for
river
water
coolant
systems.
The
nutrient‐deficient
conditions
coupled
with
presence
nitrate‐reducing
bacteria
(NRB)
within
these
pipelines
facilitate
microbiologically
influenced
corrosion,
wherein
directly
interact
metal
to
harvest
electrons
metabolic
processes.
Our
findings
indicate
that
GE
inhibits
through
dual
mechanisms:
significantly
reducing
biofilm
formation
and
adsorbing
onto
surface.
Biofilm
inhibition
was
assessed
both
qualitative
quantitative
assessments,
employing
light
microscopy
confocal
laser
scanning
(CLSM)
visualize
confirm
suppression
development
by
NRB
GE.
Electrochemical
techniques,
including
electrochemical
impedance
spectroscopy
(EIS)
polarization
measurements,
demonstrated
achieved
an
efficiency
nearing
95%.
Further
analysis
via
electron
(SEM)
adsorption
studies
corroborated
effective
on
steel,
highlighting
importance
concentration
immersion
time
performance
outcomes.
Notably,
elevated
concentrations
were
found
enhance
inhibitory
effects,
7‐day
exposure
period
yielding
optimal
surface
coverage.
These
results
establish
promising
environmentally
friendly
alternative
mitigating
industrial
applications.
Practitioner
Points
nutrient‐starved
environment
are
commonplace
carrying
can
cause
severe
damage
pipes.
Ginger
(GE),
inexpensive
inhibitor,
be
potent
industries.
high
(95%),
is
due
its
dual‐acting
mechanism:
It
bacterial
providing
non‐conducive
growth.
components
get
adsorbed
over
hence
prevent
attachment.
An
0.5
g/L
required
exhibit
which
7
days
GE,
environment.
