ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(42), С. 57915 - 57926
Опубликована: Окт. 10, 2024
Upcoming
regulations
aim
to
ban
per-
and
polyfluoroalkyl
substances
(PFAS),
including
commercial
polymeric
PFAS,
or
fluoropolymers,
such
as
poly(tetrafluoroethylene)
(PTFE)
poly(vinylidene
fluoride)
(PVDF),
due
their
environmental
toxicological
impacts.
However,
fluoropolymers
also
provide
crucial
properties
for
clean
energy
transitions,
regulation
may
hinder
further
technological
advancements.
Therefore,
a
facile
one-pot
recycling–upcycling
strategy
using
inexpensive
biomass,
cellulose
nanocrystals
(CNCs),
absorbents
cocomponents
fluoro-functionalized
composites
could
align
with
global
sustainability
goals
demands.
Herein,
we
present
closed-loop
CNC-in-solvent
(CiS)
processing
system,
which
involves
stirring
CNCs
in
only
low-polarity
solvents
like
toluene
(CiS-T).
Our
study
reveals
that
CiS-T
is
two-step
process
where
the
CNC–solvent
interaction
exposes
CNCs'
reducing
end
aldehyde
protons
solvent
polarity
promotes
H–F
bond
formation.
The
used
was
recollected
reused.
Additionally,
demonstrate
practical
application
of
PTFE–
PVDF–CNC
hybrids,
byproducts
process,
performance-enhancing
agents
green-energy-harvesting
devices
triboelectric
nanogenerators.
findings
not
offer
sustainable
method
overcome
challenges
from
against
but
insights
into
developing
an
efficient,
solvent-mediated
CNC
functionalization
addresses
forthcoming
key
industries.
Biofuels,
Год журнала:
2024,
Номер
unknown, С. 1 - 14
Опубликована: Апрель 21, 2024
This
study
explores
the
potential
of
hydrochar
derived
from
potato
peels
as
a
cost-effective
option
for
efficient
adsorption.
Potato
peel
(PPH)
was
produced
via
hydrothermal
carbonization
(HTC)
with
KOH
activation
at
200
°C
2
h.
The
resulting
then
divided
into
three
portions,
two
which
underwent
mixing
urea
followed
by
pyrolysis
under
N2
gas
600
and
3
h,
respectively,
in
formation
N-doped
pyrochars
(N-PPH.2
hrs
N-PPH.3
hrs).
Characterization
using
Brunauer-Emmett-Teller
(BET),
Scanning
Electron
Microscope
(SEM),
Energy-Dispersive
X-ray
Spectroscopy
(EDS),
Diffraction
(XRD),
Fourier
Transform
Infrared
(FTIR)
revealed
distinctive
properties.
results
showed
that
nitrogen
atoms
were
effectively
incorporated
pyrochar,
increasing
significantly
3.7
to
8.3%
45.6%
new
compounds.
modification
impacted
acidity
basicity
chemical
surfaces
pyrochar.
particle
sizve
compounds
296.11
nm,
demonstrated
most
adsorption
Congo
red
(CR).
efficiency
achieved
through
various
mechanisms,
including
pore
filling,
Lewis
acid-base
interaction,
hydrogen
bonding,
π–π
interaction.
presence
highly
available
functional
groups,
primarily
pyridinic-N,
pyrrolic-N,
graphitic-N,
further
enhanced
capacity.
highest
capacities
observed
310
mg
g−1
N-PPH-2Hr
400
N-PPH-3Hr,
respectively.
Increased
temperature
CR
concentration
correlated
positively
adsorption,
following
Freundlich
isotherm
pseudo
second-order
kinetics.
Further,
indicate
prepared
chars
is
endothermic,
increases
disorder,
spontaneous
process.
highlights
cost-effectiveness
agro-industrial
waste-derived
removal,
highlighting
economic
environmental
benefits.
eXPRESS Polymer Letters,
Год журнала:
2024,
Номер
18(7), С. 760 - 777
Опубликована: Янв. 1, 2024
Seaweed
from
macroalgae
and
cellulose
nonwood
materials
have
gained
attention
in
various
fields.This
study
explores
how
seaweed
nanofibers
(CNF)
interact
to
form
3D
networks
composite
bioaerogels.The
ratio
of
CNF
was
varied
see
it
affects
the
aerogel's
inside
its
properties.The
observations
show
that
biocomposite
aerogel
is
more
rigid
shrinks
less
than
using
a
single
biopolymer.The
has
fine,
thin
network
structure,
sheet
structure.The
combines
both
fine
mechanical
properties
are
significantly
influenced
by
composition.The
introduction
increases
elasticity,
while
enhances
firmness.Generated
computer
modelling
revealed
abundant
hydroxyl
groups
facilitated
formation
intermolecular
bonds
with
seaweed.The
bonding
led
increased
adhesion
entanglement
between
biopolymers,
consequently
enhancing
elasticity
establishing
stable
interaction.The
X-ray
imaging
model
shows
skeletal
framework
primarily
consists
biopolymer,
serving
reinforce
this
structure
thus
robustness
bioaerogels.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(42), С. 57915 - 57926
Опубликована: Окт. 10, 2024
Upcoming
regulations
aim
to
ban
per-
and
polyfluoroalkyl
substances
(PFAS),
including
commercial
polymeric
PFAS,
or
fluoropolymers,
such
as
poly(tetrafluoroethylene)
(PTFE)
poly(vinylidene
fluoride)
(PVDF),
due
their
environmental
toxicological
impacts.
However,
fluoropolymers
also
provide
crucial
properties
for
clean
energy
transitions,
regulation
may
hinder
further
technological
advancements.
Therefore,
a
facile
one-pot
recycling–upcycling
strategy
using
inexpensive
biomass,
cellulose
nanocrystals
(CNCs),
absorbents
cocomponents
fluoro-functionalized
composites
could
align
with
global
sustainability
goals
demands.
Herein,
we
present
closed-loop
CNC-in-solvent
(CiS)
processing
system,
which
involves
stirring
CNCs
in
only
low-polarity
solvents
like
toluene
(CiS-T).
Our
study
reveals
that
CiS-T
is
two-step
process
where
the
CNC–solvent
interaction
exposes
CNCs'
reducing
end
aldehyde
protons
solvent
polarity
promotes
H–F
bond
formation.
The
used
was
recollected
reused.
Additionally,
demonstrate
practical
application
of
PTFE–
PVDF–CNC
hybrids,
byproducts
process,
performance-enhancing
agents
green-energy-harvesting
devices
triboelectric
nanogenerators.
findings
not
offer
sustainable
method
overcome
challenges
from
against
but
insights
into
developing
an
efficient,
solvent-mediated
CNC
functionalization
addresses
forthcoming
key
industries.
