In situ growth of layered double hydroxides on zirconium phosphate for reinforcing anti-corrosion and wear resistance of waterborne epoxy coatings
Ruiqin Guo,
Caiyou Ding,
Yuan Liu
и другие.
Polymer,
Год журнала:
2025,
Номер
unknown, С. 128048 - 128048
Опубликована: Янв. 1, 2025
Язык: Английский
Development of a Multifunctional Antimicrobial Peptide for Marine Antifouling by Theoretical Calculations and Experimental Approaches
Tong Lou,
Xueqiang Zhuang,
Jiangfan Chang
и другие.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 15, 2025
Marine
biofouling
poses
significant
challenges
to
the
economy,
safety,
and
reliability
of
marine
infrastructure.
While
antimicrobial
peptides
(AMPs)
have
emerged
as
green
efficient
antifouling
agents,
their
single
functionality
complexity
preparing
surfaces
remain
key
challenges.
This
study
introduces
a
multifunctional
AMP
with
combined
adhesion
properties,
derived
from
3,4-dihydroxy-l-phenylalanine
(DOPA)
IP12
(sequence
IRLRWRWKWPWP).
The
directional
recombination
was
guided
by
theoretical
calculations.
Density
functional
theory
(DFT)
simulations
identify
that
hydroxyl
groups
DOPA
were
main
activating
react
aluminum
alloy.
Coarse-grained
molecular
dynamics
(CG
MD)
all-atom
(AA
revealed
amino
acid
residues
near
N-terminal
could
induce
cell
membrane
bending
rupture.
fabricated
validate
accurate
calibration
performance
AMP.
Atomic
force
microscopy,
Fourier
transform
infrared,
X-ray
photoelectron
spectroscopy
results
confirm
successful
construction
through
function.
Antifouling
evaluations
demonstrated
properties
against
Escherichia
coli
(Gram-negative)
Bacillus
sp.
(Gram-positive),
achieving
rates
85.8
82.4%,
respectively.
provides
valuable
insights
into
design
AMPs.
Язык: Английский
Robust Fe3O4@attapulgite-intercalated carboxylated graphene oxide composite membrane for efficient and stable oil-in-water emulsion separation
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Год журнала:
2025,
Номер
unknown, С. 136605 - 136605
Опубликована: Март 1, 2025
Язык: Английский
Heat Sterilizable Coatings Based on Nafion and Graphene Quantum Dots With Advanced Antibacterial Performance
Nano Select,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 31, 2025
ABSTRACT
The
study
focuses
on
the
preparation
of
electrostatically
assembled
layer‐by‐layer
waterborne
nanocoatings
comprising
negatively
charged
Nafion
and
positively
imidazole
modified‐graphene
quantum
dots
(GQD‐Ims).
We
demonstrate
here
that
Nafion/GQD‐Im
can
combat
growth
representative
Gram‐positive
Gram‐negative
bacteria,
their
excellent
antibacterial
performance
is
preserved
after
prolonged
thermal
treatment,
indicating
coatings
withstand
dry
heat
sterilization
without
any
decline
in
properties.
At
same
time,
show
remarkable
chemical
structural
stability,
while
offering
protection
against
UV‐radiation
as
manifested
by
dye
decomposition
experiments.
This
novel
type
demonstrates
a
unique
combination
highly
desirable
characteristics,
making
them
ideal
candidates
for
applications
related
to
active
packaging
cosmetics
drugs,
food
processing,
disinfection
medical
devices.
Язык: Английский
Preparation and Properties of Environmentally Friendly Carboxyl Graphene Oxide/Silicone Coatings
Materials,
Год журнала:
2025,
Номер
18(9), С. 2122 - 2122
Опубликована: Май 5, 2025
To
address
the
protective
demands
of
marine
engineering
equipment
in
complex
corrosive
environments,
this
study
proposes
an
environmentally
friendly
composite
coating
based
on
carboxylated
graphene
oxide
(CGO)-modified
water-based
epoxy
organosilicon
resin.
By
incorporating
varying
mass
fractions
(0.05–0.25%)
CGO
into
resin
matrix
via
mechanical
blending,
microstructure,
corrosion
resistance,
and
long-term
kinetics
coatings
were
systematically
investigated.
The
results
demonstrate
that
with
0.15
wt.%
(designated
as
KCG15)
exhibited
optimal
comprehensive
performance:
its
current
density
(Icorr
=
4.37
×
10−8
A/cm2)
was
two
orders
magnitude
lower
than
pure
coating,
while
low-frequency
impedance
modulus
(∣Z∣0.1Hz
4.99
106
Ω⋅cm2)
is
significantly
enhanced,
accompanied
by
improved
surface
compactness.
achieved
a
97%
inhibition
rate
against
sulfate-reducing
bacteria
(SRB)
through
synergistic
physical
disruption
electrostatic
repulsion
mechanisms.
Long-term
analysis
60-day
seawater
immersion
identified
three
degradation
phases—permeation
(0–1
day),
blockage
(1–4
days),
failure
(7–60
days)—with
structural
evolution
from
microcrack
networks
to
foam-like
blistering
ultimately
reducing
97.8%.
Furthermore,
180-day
atmospheric
exposure
test
confirms
superior
weatherability
adhesion
KCG15
only
minor
discoloration
observed
due
hydrophobic
surface.
This
work
provides
theoretical
technical
foundations
for
developing
anti-corrosion
synergize
environmental
sustainability
performance.
Язык: Английский
Shape Memory Effects in Polyurethane Nanocomposites—A Holistic Panorama on Features and Technicalities
Polymer-Plastics Technology and Materials,
Год журнала:
2024,
Номер
unknown, С. 1 - 30
Опубликована: Сен. 16, 2024
Язык: Английский
One-pot multicomponent reaction: Synthesis, characterization and antibacterial evaluation of novel tri and tetra-substituted imidazoles
Synthetic Communications,
Год журнала:
2024,
Номер
unknown, С. 1 - 11
Опубликована: Дек. 30, 2024
Using
one-pot
multicomponent
reactions,
two
new
series
of
imidazoles
(4a–o
and
6a–d),
were
synthesized
due
to
their
great
biological
activity.
The
first
was
accomplished
by
the
reaction
O-alkyl
vanillins
1a–c,
ammonium
acetate
2,
benzil
derivatives
3a–e
in
ethanol,
while
second
obtained
reacting
1a,
3a,
amino
compounds
(aniline
5a
or
acids
5b–d)
acetic
acid.
vitro
antibacterial
activity
novel
synthetic
assessed
against
strains
gram
positive
bacteria,
such
as
Bacillus
cereus
Staphylococcus
aureus,
negative
Pseudomonas
aeruginosa
Escherichia
coli.
findings
indicated
that
some
evaluated
items
have
promising
agents,
especially
4d
4e
for
(+G)
bacteria
4c
4f
(−G)
bacteria.
Язык: Английский