Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
ABSTRACT
To
achieve
efficient
and
selective
removal
of
Cu
2+
from
a
multi‐ion
coexistence
environment,
‐imprinted
SA/CMC/AM
microspheres
(IMSCA)
were
synthesized.
The
adsorption
capacity
efficiency
the
material
under
different
preparation
conditions
investigated.
surface
morphology
functional
groups
IMSCA
characterized
analyzed
using
SEM,
FTIR,
XRD.
SEM
images
revealed
relatively
smooth
with
specific
pores
uniform
structure.
Special
peaks
appeared
in
FTIR
spectrum
IMSCA,
indicating
possibility
imprinting
process
presence
sites.
semicrystalline
structure
exhibited
by
imprinted
XRD
characterization
further
reinforces
likelihood
In
terms
kinetics,
followed
pseudo–second‐order
kinetic
model,
suggesting
that
chemical
was
dominant
during
process.
isotherms,
Langmuir
model
better
fitted
experimental
data,
monolayer
adsorption.
mixed
solutions
multiple
metal
ions.
After
10
adsorption–desorption
cycles,
remained
at
approximately
90%.
Compared
other
materials,
exhibits
higher
capacity,
faster
elution
rate,
superior
reusability.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(21), P. 5123 - 5123
Published: Oct. 30, 2024
Corrosion
of
metallic
equipment
is
a
critical
issue
across
various
industries,
necessitating
the
development
advanced
protective
strategies.
This
study
utilized
dispersion-corrected
density
functional
theory
(DFT)
with
Becke-Johnson
D3(BJ)
to
examine
atomic-level
adsorption
quinoxalinones
on
Fe(110)
surfaces,
focusing
optimizing
substitution
strategies
enhance
corrosion
inhibition.
Three
quinoxalinones,
quinoxalin-2(1H)-one
(QNO),
3-methylquinoxalin-2(1H)-one
(QNOM),
and
3,7-dimethylquinoxalin-2(1H)-one
(QNO2M),
were
investigated
in
configurations
protonation
states.
Protonated
demonstrated
stronger
surface
affinity,
primarily
interacting
through
oxygen
atoms
conjugated
systems,
greater
energetic
stability
compared
neutral
molecules,
driven
by
enhanced
electrostatic
interactions
charge
transfer
mechanisms.
The
parallel
configuration
was
more
stable
than
perpendicular
mode,
which
some
systems
did
not
form
bonds
iron
surface.
Notably,
presence
methyl
substitutions
significantly
strength;
QNO
exhibited
higher
due
reduced
steric
interference,
maintained
its
planarity.
Projected
states
(PDOS),
electron
difference
(EDD),
localization
function
(ELF)
analyses
confirmed
importance
between
quinoxalinone
active
sites
3d
orbitals
stabilizing
molecules.
These
findings
underscore
judicious
functionalization
preserve
their
efficacy
as
inhibitors.
