Low Environmental Impact Magnetic Chitosan and Chitin Cryogels for PFAS Remediation
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 10, 2024
Abstract
Polymers
derived
from
renewable
carbon
feedstock
are
destined
to
play
a
pivotal
role
in
the
transition
sustainable
circular
economy,
displacing
conventional
fossil‐carbon
materials.
Chitin
(CT)
and
chitosan
(CS)
well‐suited
develop
multifunctional
materials
that
mechanically
resilient
easy
process.
Their
abundance
of
hydroxyl
amine
groups
facilitates
hydrogen
bonding
electrostatic
interactions,
making
them
suitable
for
persistent
pollutant
removal
drinking
water.
Therefore,
porous
CS
cryogels
fabricated
by
dissolution
acetic
acid,
coagulation,
subsequent
freeze‐drying.
To
enhance
durability
harsh
environments,
CT
obtained
through
acetylation.
Furthermore,
Fe
3
O
4
nanoparticles
incorporated
enable
external
magnetic
fields.
The
rapid
per‐
polyfluoroalkyl
substances
(PFASs)
with
capacities
reaching
451
mg
g
−1
offers
competitive
performance
against
state‐of‐the‐art
shear‐thinning
properties
additive
manufacturing
predetermined
free‐standing
shapes,
useful
accessing
sites
complex
geometries.
Life
cycle
assessment
(LCA)
confirms
suitability
low
environmental
impact
water
remediation
applications.
can
be
recycled,
closing
material
loops
back
into
economic
cycle.
Altogether,
this
work
demonstrates
potential
as
alternatives
systems
remediation.
Language: Английский
Portable Sensing Probe for Real-Time Quantification of Ammonia in Blood Samples
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(36), P. 47242 - 47256
Published: Aug. 27, 2024
The
detection
of
ammonia
levels
in
blood
is
critical
for
diagnosing
and
monitoring
various
medical
conditions,
including
liver
dysfunction
metabolic
disorders.
However,
traditional
diagnostic
methods
are
slow
cumbersome,
often
involving
multiple
contact-based
steps
such
as
separation
alkali
conditions
followed
by
distillation
or
microdiffusion,
leading
to
delays
diagnosis
treatment.
Herein,
we
developed
a
colorimetric
assay
capable
rapid
whole
plasma
samples,
utilizing
2,2,6,6-tetramethylpiperidine
1-oxyl
(TEMPO)-oxidized
cellulose
nanocrystals
(TCNC)
coupled
with
gold
nanoparticles
(AuNPs).
basis
our
relies
on
either
(i)
the
interaction
between
carboxylate
group
(−COO)
TEMPO
ammonium
ions
(ii)
manipulation
AuNPs
surface
plasmon
resonance
(SPR)
through
formation
Au(NH3)43+,
which
displaces
redox
mediator,
resazurin,
resulting
observable
multicolor
displays
at
concentrations
ammonia.
exhibits
wide
linear
range
dissolved
NH4+
(0.1–37
μM)
low
limit
(LOD)
0.1
μM.
Additionally,
it
effectively
measures
NH3(g)
0.5–144
fabricated
electrochemical
nose
(E-nose)
device
demonstrates
excellent
analytical
performance
sensing
(0.05–256
μM).
Experimental
results
demonstrate
suitable
clinical
applications,
correlation
standard
laboratory
methods,
offering
practical
solution
point-of-care
(PoC)
testing.
We
anticipate
that
this
approach
can
be
applied
broadly
improve
patient
treatment
providing
immediate
accurate
measurements
setting.
Language: Английский
Nanocellulose: The Ultimate Green Aqueous Dispersant for Nanomaterials
Polymers,
Journal Year:
2024,
Volume and Issue:
16(12), P. 1664 - 1664
Published: June 12, 2024
Nanocellulose,
a
nanoscale
derivative
from
renewable
biomass
sources,
possesses
remarkable
colloidal
properties
in
water,
mechanical
strength,
and
biocompatibility.
It
emerges
as
promising
bio-based
dispersing
agent
for
various
nanomaterials
water.
This
mini-review
explores
the
interaction
between
cellulose
(nanocrystals
or
nanofibers)
elucidating
how
this
may
enable
their
potential
an
eco-friendly
agent.
We
explore
of
nanocellulose
derived
top-down
processes,
nanocrystals,
nanofibers
carbon
nanomaterials,
semiconducting
oxide
nanoparticles,
other
also
highlight
its
advantages
over
traditional
methods
by
not
only
effectively
those
but
potentially
eliminating
need
further
chemical
treatments
supporting
stabilizers.
preserves
exceptional
aqueous
dispersion,
even
lead
to
emergence
novel
hybrid
functionalities.
Overall,
underscores
versatility
green
variety
inspiring
research
expand
applications.
Language: Английский