Polymers,
Год журнала:
2024,
Номер
16(21), С. 3069 - 3069
Опубликована: Окт. 31, 2024
Poly
(3-hydroxybutyrate)
(PHB)
is
a
valuable
biopolymer
that
produced
in
industrial
quantity
but
not
widely
used
applications
due
to
some
drawbacks.
The
addition
of
cellulose
nanofibers
(CNF)
as
biofiller
PHB/CNF
nanocomposites
may
improve
PHB
properties
and
enlarge
its
application
field.
In
this
work,
n-octyltriethoxy
silane
(OTES),
medium-chain-length
alkyl
silane,
was
surface
chemically
modify
the
CNF
(CNF_OTES)
enhance
their
hydrophobicity
compatibility
with
PHB.
functionalization
nanodimension
were
emphasized
by
Fourier
transform
infrared
spectroscopy,
X-ray
photoelectron
thermogravimetric
analysis,
atomic
force
microscopy,
dynamic
light
scattering,
water
contact
angle
(CA).
Surface
modification
OTES
led
an
increase
thermal
stability
25
°C
more
than
doubling
CA.
As
result
higher
hydrophobicity,
CNF_OTES
homogeneously
dispersed
unmodified
CNF,
leading
nanocomposite
better
mechanical
properties.
Thus,
122%
storage
modulus
at
°C,
slight
crystallinity,
melting
processability,
good
obtained
after
reinforcing
CNF_OTES,
paving
way
for
increasing
applicability.
Materials,
Год журнала:
2024,
Номер
17(5), С. 1029 - 1029
Опубликована: Фев. 23, 2024
In
this
study,
a
chemical
precipitation
approach
was
adopted
to
produce
photocatalyst
based
on
bismuth
tungstate
Bi2WO6
for
enhanced
and
environmentally
friendly
organic
pollutant
degradation.
Various
tools
such
as
X-ray
diffraction
(XRD),
Raman
spectroscopy,
scanning
electron
microscopy
(SEM),
optical
spectroscopy
photoelectron
were
employed
assess
the
structural
morphological
properties.
Hence,
XRD
profiles
showed
well
crystallized
orthorhombic
phase.
The
photocatalytic
performance
of
resulting
assessed
by
decomposition
Rhodamine
B
(RhB)
methyl
orange
(MO)
with
efficiency
97
92%,
along
highest
oxygen
demand
82
79%
during
120
min
illumination,
respectively.
principal
novelty
present
work
is
focus
changes
in
crystalline
structure,
morphology,
photoelectrochemical
characteristics
Bi2WO6,
tuning
annealing
temperature
designed
photocatalyst.
Such
physicochemical
property
as-prepared
will
affect
turn
its
activity
toward
decomposition.
mechanism
elaborated
electrochemical
impedance
photocurrent
analysis,
photoluminescence
radical
trapping
measurements.
overall
data
indicate
that
superoxide
O2•−
holes
h+
are
species
responsible
photodegradation.
Materials Advances,
Год журнала:
2024,
Номер
5(5), С. 1960 - 1976
Опубликована: Янв. 1, 2024
This
work
presents
a
novel
approach
for
the
design
and
stabilization
of
cobalt
oxide
nanoparticles
supported
on
g-C
3
N
4
(CoCN-
x
)
catalyst
to
efficiently
degrade
various
organic
pollutants
through
peroxymonosulfate
(PMS)
activation.
