Water,
Journal Year:
2024,
Volume and Issue:
16(8), P. 1182 - 1182
Published: April 21, 2024
Developing
environmentally
friendly
and
biodegradable
corrosion
inhibitors
is
an
important
research
direction
due
to
the
toxicity
non-degradability
of
conventional
carbon
steel
added
circulating
cooling
water
environments.
Polysaccharides
in
EPSs
(Exopolysaccharides)
can
be
used
as
green
inhibitors,
but
a
low
inhibition
rate
limits
their
practical
application.
Chemical
modification
widely
modify
functionality
polysaccharides
by
altering
physicochemical
properties
structures,
thereby
enhancing
or
supplementing
functional
characteristics.
In
this
study,
we
employed
chloroacetic
acid
esterifying
agent
chemically
Dextran
successfully
synthesized
modified
polysaccharide
derivative
with
substitution
degree
0.326.
This
efficiently
inhibited
The
carboxymethylated
dextran
(CM-Dextran)
formed
after
synthesis
could
adsorb
onto
metal
surfaces
form
protective
film,
inhibiting
surface
dissolution
reactions
exhibiting
anodic
properties.
experimental
results
showed
that
efficiency
CM-Dextran
increased
up
57.4%,
maximum
82.52%
at
concentration
4
mg/mL.
study
provides
new
insights
opportunities
for
development
derived
from
polysaccharides.
Journal of Materials Research and Technology,
Journal Year:
2024,
Volume and Issue:
32, P. 2149 - 2159
Published: Aug. 10, 2024
Citric
acid-based
carbon
dots
(CA-CDs)
with
different
amounts
of
heteroatoms
N
were
obtained
through
hydrothermal
synthesis
method.
The
microstructure,
optical,
antibacterial
and
anticorrosive
behaviors
systematically
analyzed.
Through
detection,
the
atoms
existed
in
form
pyridine-like
N,
pyrrole-like
graphitic
promoted
grain
coarsening
dots.
CA-N-CDs
displayed
obvious
pH
dependence
good
stability
from
optical
behavior
analysis.
ability
citric
was
improved
by
inserting
atom,
rate
directly
proportional
to
amount
which
up
95%
for
E.
coli
S.
aureus.
However,
anticorrosion
showed
an
initial
increase
followed
a
decrease
as
atom
increased,
reaching
its
peak
at
CA-N12%-CDs.
At
this
moment,
corrosion
current
density
(icorr)
metal
4.68
×
10−6
A/cm2,
decreased
122
times
compared
blank
solution.
Meanwhile,
inhibition
(IE)
96%,
mainly
depended
on
tight
adsorption
surface.
