Food and Bioprocess Technology,
Год журнала:
2024,
Номер
17(12), С. 5083 - 5096
Опубликована: Май 18, 2024
Abstract
This
study
presents
the
synthesis
of
agro-waste
banana
peel
extract-based
magnetic
iron
oxide
nanoparticles
(BPEx-MIONPs),
emphasizing
antioxidant
capacity
and
food
preservation.
Using
(III)
chloride
hexahydrate
(FeCl
3
·
6
H
2
O)
as
a
precursor
reducing
agent
from
extract,
precisely
controlled
process
yielded
BPEx-MIONPs.
Characterization
involved
X-ray
diffraction
(XRD),
transmission
electron
microscopy
(TEM),
scanning
(SEM),
Fourier-transform
infrared
spectroscopy
(FTIR).
XRD
revealed
tetragonal
Fe
O
,
cubic
magnetite
structure,
monoclinic
x
y
-NPs
with
an
average
size
14.8
nm.
TEM
SEM
diverse
morphologies.
displayed
both
spherical
elongated
nanoparticles,
some
appearing
thin
fibrils.
In
contrast,
images
depicted
array
primarily
consisting
resembling
coral
reef
formations.
FTIR
confirmed
Fe–O
bonds
(1000
–400
cm
-1
).
The
assessment
showed
robust
DPPH
free
radical
scavenging;
BPEx
achieved
100%
inhibition
at
18
min,
BPEx-MIONPs
had
IC
50
~
136
µg/mL.
BPEx-MIONPs,
stabilized
banana-based
bioplastic,
effectively
preserved
grapes,
weight
loss
to
6.2%
on
day
3,
compared
control
(19.0%).
pioneering
combines
antioxidants
providing
sustainable
solutions
for
preservation
nano-packaging.
Ongoing
research
aims
refine
conditions
explore
broader
applications
Graphical
Materials Chemistry and Physics,
Год журнала:
2023,
Номер
313, С. 128787 - 128787
Опубликована: Дек. 7, 2023
The
present
study
investigates
the
algae-mediated
synthesis,
characterization,
and
H2O2
sensing
ability
of
silver
nanoparticles
using
Sargassum
spp.
extract.
synthesized
were
spherical
agglomerates
exhibited
an
absorbance
peak
at
418
nm,
as
analyzed
by
FE-SEM
UV–vis
spectrophotometric
analysis.
TEM-SAED
analysis
interpreted
size
between
2
–
35
nm
crystallinity
corresponding
to
face-centered
cubic
(FCC)
structure.
This
was
further
supported
from
XRD
findings,
which
ascertained
presence
(111),
(200),
(220),
(311)
lattice
planes.
FT-IR
confirmed
capping
algal
phenolics
functional
groups,
XPS
studies.
observed
be
highly
stable
in
aqueous
suspensions,
due
zeta
potential
value
(−22.6
mV).
On
incubation
nanoparticles,
with
solutions,
decolorization
nanoparticle
solution
along
reduction
nm.
color
change
could
utilized
for
detection
contaminated
samples.
Therefore,
this
reveals
sustainable
biomass
synthesizing
beneficial
exploited
environmental
applications.
Abstract
Increasing
concern
about
environmental
pollution
attracts
researchers
to
develop
eco-friendly,
low-cost,
and
sustainable
approaches
for
green
biosynthesis
of
nanoparticles
overcome
pollutants.
This
study
focuses
on
the
synthesis
ceria
NPs
using
Spirulina
platensis
extract
as
a
stabilizing
reducing
agent.
Characterization
measurements,
such
optical
properties,
X-ray
diffraction,
SEM,
TEM,
FT-IR
spectroscopy,
confirmed
successful
crystalline
stable
with
well-defined
morphological
features.
The
calculated
bandgaps
energy
pure
ceria,
CeO
2
@Sp
2:1,
1:1
were
3.3,
3.15,
2.94
eV,
respectively.
as-synthesized
showed
an
excellent
degradation
efficacy
MB
dye
under
UV
irradiation.
Furthermore,
high
photodegradation
efficiency
(R%
=
86.2
88.8%)
than
76.4%)
at
certain
specific
conditions
(pH
11,
contact
time
90
min,
catalyst
dose
0.3
g/L
initial
concentration
100
mg/L).
isothermal
constants
that
is
well-fitted
Freundlich
isotherm
model
(R
>
0.99)
better
Langmuir
<
0.8).
kinetics
models
revealed
rapid
rate
dye,
which
follows
pseudo-second-order
C
e
values
ranging
from
83.33
89.29
mg/g,
R
0.99.
These
results
indicated
potential
applicability
promising
avenue
developing
advanced
wastewater
treatment
applications.
Polymers for Advanced Technologies,
Год журнала:
2024,
Номер
35(4)
Опубликована: Апрель 1, 2024
Abstract
The
areas
of
environmental
cleanup
and
bacteria
inactivation
are
particularly
interesting
in
polymer‐based
nanomaterials
because
their
unique
physicochemical
properties.
Conjugated
polymer
nanoparticles
(CP
NPs)
have
potential
uses
the
biological
environmental,
but
little
is
known
about
them.
This
study
aimed
to
examine
efficacy
CP
photocatalytic
S.
aureus
E.
coli
under
visible
irradiation
(
λ
≤
420
nm),
with
minor
enhancements
observed.
simple
one‐step
chemical
oxidation
technique
was
used
prepare
nanoparticles.
X‐ray
powder
diffraction
(XRD),
Fourier‐transform
infrared
spectroscopy
(FT‐IR),
Scanning
electron
microscope
(SEM),
Energy‐dispersive
(EDS),
Transmission
microscopy
(TEM)
analyses
were
utilized
characterize
properties
for
comprehensive
structural
analysis.
synthesized
exhibited
outstanding
disinfection
capabilities,
achieving
a
degradation
98.6%.
research
not
only
provides
insights
into
physical
characteristics
also
illustrates
antibacterial
against
two
different
bacterial
pathogens,
namely
.
Therefore,
this
highlights
an
eco‐friendly
inexpensive
preparation
conjugated
wide
range
applications.
