Macromolecular Materials and Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 9, 2024
Abstract
Polylactic
acid
(PLA)
composites
with
multifunctional
properties
and
minimal
filler
content
are
increasingly
in
demand
across
various
industries.
However,
achieving
a
balance
between
high
mechanical
strength,
electrical
conductivity,
thermal
electromagnetic
interference
(EMI)
shielding
remains
challenging.
In
this
study,
dual‐processing
strategy
combining
Pickering
emulsion
templating
melt
blending
is
presented
to
hybridize
1D
carbon
nanotubes
(CNTs)
2D
graphene
nanoplatelets
(GNPs)
within
PLA
matrix.
This
approach
successfully
forms
stable
dual‐filler
network,
ensuring
uniform
dispersion
of
the
fillers.
The
results
show
that
method
significantly
enhances
performance
resulting
PM‐PG
x
C
y
(P:
emulsion;
M:
blending;
y:
mass
fractions
GNPs
CNTs,
respectively).
Specifically,
1.43
composite
exhibits
remarkable
improvements
strength
(56.2
MPa),
conductivity
(43.5
S
m
−1
),
EMI
effectiveness
(20.1
dB),
(0.34
W
m·K
outperforming
prepared
using
either
alone.
These
findings
indicate
effectively
combines
fillers,
facilitating
superior
interfacial
interactions
enhancing
PLA‐based
composites.
study
offers
new
high‐performance
low
content,
offering
significant
potential
for
applications
electronics,
packaging,
technologies.
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 14, 2025
Here,
we
reported
a
highly
efficient
nitrate
electroreduction
(NO3RR)
electrocatalyst
that
integrated
alloying
and
heterostructuring
strategies
comprising
FeCo
alloy
Mo0.82N
(FeCo-Mo0.82N/NC).
Notably,
the
maximum
NH3
Faraday
efficiency
(FE)
of
83.24%,
yield
12.28
mg
h-1
mgcat.-1,
good
stability
were
achieved
over
FeCo-Mo0.82N/NC.
Moreover,
Zn-NO3-
battery
assembled
with
FeCo-Mo0.82N/NC
exhibited
power
density
0.87
mW
cm-2,
an
14.09
FE
as
high
76.31%.
Materials Chemistry Frontiers,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
phosphide
heterojunction
has
been
developed
as
an
efficient
catalyst
toward
methanol-assisted
seawater
splitting
with
good
activity
and
high
durability.
Abstract
Urea‐assisted
water
splitting
is
a
promising
energy‐saving
hydrogen
(H
2
)
production
technology.
However,
its
practical
application
hindered
by
the
lack
of
high‐performance
bifunctional
catalysts
for
urea
oxidation
reaction
(UOR)
and
evolution
(HER).
Herein,
heterostructured
catalyst
comprising
highly
active
NiSe
Ni
3
Se
,
along
with
conductive
graphene‐coated
nickel
foam
skeleton
(NiSe‐Ni
/GNF)
reported.
The
NiSe‐Ni
originates
from
in
situ
selenization
foam,
allowing
careful
regulation
to
ratio
simply
adjusting
calcination
temperature.
Theoretical
calculations
charge
transfer
between
components
can
optimize
pathways
reduce
corresponding
energy
barriers.
Accordingly,
designed
exhibits
excellent
UOR
HER
activity
stability.
Furthermore,
/GNF‐based
UOR‐HER
electrolyzer
requires
only
1.54
V
achieve
current
density
50
mA
cm
−2
which
lower
than
many
recent
reports
much
1.83
OER‐HER
electrolyzers.
Moreover,
exhibited
negligible
cell
voltage
variation
during
28‐h
stability
test,
indicating
satisfactory
stability,
provides
new
viable
paradigm
H
production.
Abstract
Environmental‐friendly
aqueous
Zn−CO
2
batteries
present
bifunctional
potentials
of
achieving
carbon
neutrality
and
energy
storage.
Nonetheless,
anode
corrosions
derived
from
H
O
molecules
high
risks
volatilization
leakage
hinder
the
advancement
batteries.
In
this
work,
polyvinyl
alcohol
(PVA)‐based
hydrogel
electrolyte
with
fast
ion
diffusion
kinetics,
mechanical
strength,
flexibility
is
developed
to
replace
liquid
electrolyte.
Since
hydroxyl
radicals
in
polymer
chain
can
interact
Zn
2+
,
electrode
corrosion
free
active
around
significantly
inhibited,
facilitating
uniform
deposition
cations.
The
introduction
an
ionic
plasticizer
further
enhances
interaction
between
backbone,
as
well
amorphous
extent
possesses
adequate
self‐healing
ability,
whose
conductivity
reaches
7.95
×
10
−3
S
cm
−1
.
symmetric
metal
containing
remain
steady
for
>2000
h
under
different
current
densities.
Furthermore,
battery
based
on
Ru
nanoparticles
cathode
realizes
a
discharge
capacity
6028
mAh
g
stable
cyclicity
90
times.
reaction
path
electrolyte‐based
that
CO
reduced
ZnCO
3
C
species
followed
by
reversible
decomposition
products
recharge.
Plastics
play
a
vital
role
in
modern
society,
but
their
accumulation
landfills
and
the
environment
presents
significant
risks
to
ecosystems
human
health.
In
addition,
discarding
of
plastic
waste
constitutes
loss
valuable
material.
While
usual
mechanical
recycling
method
often
results
reduced
material
quality,
chemical
offers
exciting
opportunities
valorize
into
compounds
interest.
Its
versatility
leans
on
broad
horizon
reactions
applicable,
such
as
hydrogenolysis,
hydrolysis,
alcoholysis,
or
aminolysis.
The
development
heterogeneous
supported
organocatalysts
has
enormous
potential
enhance
economic
industrial
viability
these
technologies,
reducing
cost
process
mitigating
its
global
environmental
impact.
This
review
summarizes
challenges
chemically
heteroatom-containing
plastics
through
catalysis,
covering
widely
used
polyesters
(notably
PET
PLA),
BPA-polycarbonate
(BPA-PC),
polyurethane
(PU),
polyamide
(PA),
polyether.
It
examines
limitations
various
solid
catalysts,
including
clays,
zeolites,
metal–organic
frameworks
well
immobilized
enzymes
(heterogeneous
biocatalysts),
for
that
facilitate
recovery
high-value
products.
By
reintroducing
products
economy
precursors,
this
approach
supports
more
sustainable
lifecycle
plastics,
aligning
with
principles
circular
economy.
Advanced Engineering Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 4, 2025
Polymer
foams,
particularly
those
prepared
using
supercritical
carbon
dioxide
(Sc‐CO
2
),
are
extensively
utilized
in
diverse
applications
like
thermal
insulation
and
packaging
due
to
their
lightweight
efficient
properties.
However,
the
effectiveness
of
Sc‐CO
foaming
is
often
limited
by
low
cell
density
large
size,
mainly
resulting
from
insufficient
nucleation
control
inadequate
gas
management.
In
this
study,
hollow
metal‐organic
frameworks
(MOFs)
(HZIF‐8)
were
introduced
as
effective
nucleating
agents
‐assisted
polystyrene
(PS)
foaming.
Owing
unique
structure
high
internal
surface
area,
HZIF‐8
significantly
enhances
adsorption
storage
capacity,
thereby
improving
efficiency
during
process.
The
results
show
that
incorporating
into
PS
increases
(up
1.4
×
10
9
cells
cm
−3
)
decreases
average
size
(to
8.6
μm)
under
optimal
conditions
(13.8
MPa,
100
°C).
Compared
conventional
ZIF‐8
nanoparticles,
facilitates
more
CO
uptake,
leading
a
finer
microcellular
morphology,
stable
foam
expansion,
enhanced
mechanical
These
demonstrate
potential
MOFs
creating
high‐performance
with
promising
energy‐efficient
insulation,
packaging,
functional
materials.
