ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
unknown
Опубликована: Дек. 4, 2023
Despite
the
great
promise
in
development
of
biodegradable
and
ecofriendly
air
filters
by
electrospinning
poly(lactic
acid)
(PLA)
nanofibrous
membranes
(NFMs),
as-electrospun
PLA
nanofibers
are
generally
characterized
poor
electroactivity
smooth
surface,
challenging
exploitation
electrostatic
adsorption
physical
interception
that
need
for
efficient
removal
pathogens
particulate
matters
(PMs).
Herein,
a
combined
"electrospinning–electrospray"
strategy
was
disclosed
to
functionalize
direct
anchoring
highly
dielectric
BaTiO3@ZIF-8
nanohybrids
(BTO@ZIF-8),
conferring
simultaneous
promotion
surface
roughness,
electret
properties
(surface
potential
as
high
7.5
kV),
self-charging
capability
(∼190%
increase
tribo-output
voltage
compared
pure
PLA).
Benefiting
from
well-tailored
morphology
increased
electroactivity,
electrospun–electrosprayed
PLA/BTO@ZIF-8
exhibited
excellent
PM-capturing
performance
(up
96.54%
PM0.3
99.49%
PM2.5)
while
providing
desirable
resistance
(only
87
Pa
at
32
L/min)
due
primarily
slip
flow
molecules
over
nanohybrid
protrusions.
This
accompanied
antibacterial
(99.9%
inhibition
against
both
Staphylococcus
aureus
Escherichia
coli),
arising
presumably
synergistic
effects
enhanced
reactive
oxygen
species
(ROS)
generation,
plentiful
ion
release,
charges.
Our
proposed
opens
up
pathways
afford
exceptional
combination
high-efficiency
low-resistance
filtration,
performance,
mechanical
robustness
without
sacrificing
biodegradation
profiles
NFMs,
holding
implications
long-term
healthcare.
Journal of environmental chemical engineering,
Год журнала:
2023,
Номер
11(2), С. 109308 - 109308
Опубликована: Янв. 11, 2023
During
the
first
year
of
COVID-19
pandemic,
facemasks
became
mandatory,
with
a
great
preference
for
disposable
ones.
However,
benefits
face
masks
health
safety
are
counteracted
by
environmental
burden
related
to
their
improper
disposal.
An
unprecedented
influx
entering
environment
has
been
reported
in
last
two
years
along
implications
natural
environments
terms
biodegradability,
released
contaminants
and
ecotoxicological
effects.
This
critical
review
addresses
several
aspects
current
literature
regarding
(bio)degradation
(eco)toxicity
contaminants,
identifying
uncertainties
research
needs
that
should
be
addressed
future
studies.
While
it
is
indisputable
mask
contamination
contributes
already
alarming
plastic
pollution,
we
still
far
from
determining
its
real
contribution
issue.
The
paucity
studies
on
biodegradation
ecotoxicity
uncontrolled
variables
involved
during
experimental
procedures,
compromising
eventual
comparison
conventional
debris.
Studies
abundance
composition
mask-released
(microplastics/fibres/
chemical
compounds)
under
pre-
post-pandemic
conditions
should,
therefore,
encouraged,
tests
considering
environmentally
relevant
settings.
To
achieve
this,
methodological
strategies
developed
overcome
technical
difficulties
quantify
characterise
smallest
MPs
fibres,
adsorbents,
leachates
increase
relevancy
conditions.
