arXiv (Cornell University),
Год журнала:
2023,
Номер
unknown
Опубликована: Янв. 1, 2023
We
report
observation
of
more
than
an
order
magnitude
jump
in
saturation
magnetization
BiFeO$_3$/Ag
nanocomposite
at
room
temperature
compared
to
what
is
observed
bare
BiFeO$_3$
nanoparticles.
Using
transmission
electron
microscopy
together
with
energy
dispersive
x-ray
spectra
(which
maps
the
element
concentration
across
interface)
and
photoelectron
spectroscopy,
we
show
that
both
specific
self-assembly
pattern
Ag
nanoparticles
charge
transfer
between
O
are
responsible
for
such
enormous
rise
room-temperature
magnetization.
The
nanocomposites,
therefore,
could
prove
be
extremely
useful
a
variety
applications
including
biomedical.
Journal of environmental chemical engineering,
Год журнала:
2024,
Номер
12(3), С. 112643 - 112643
Опубликована: Март 29, 2024
Herein
an
extensive
review
of
the
use
nanomaterials
and
dendrimers
for
water
treatment
is
presented.
The
included
in
tackling
various
challenges,
including
achieving
dye
removal,
antibacterial
effects,
photocatalysis,
heavy
metal
nanomaterial
recycling,
nanowaste
removal.
highlights
existing
literature
bottlenecks
suggests
potential
remedies,
with
a
focus
on
availability
low-cost,
recyclable,
bimetallic
nanomaterials.
Moreover,
significance
taking
into
account
practical
sample
collection
analysis,
such
as
industrial
effluents
samples
analysis.
provides
valuable
insights
advances
development
nanomaterial-based
technologies
by
critically
examining
research.
Materials Advances,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Illustration
of
nanoparticles
exerting
antibacterial
actin
by
disrupting
bacterial
membranes,
generating
ROS,
inducing
mitochondrial
dysfunction
and
causing
DNA
protein
damage,
ultimately
leading
to
cell
death.
RSC Advances,
Год журнала:
2025,
Номер
15(8), С. 6400 - 6412
Опубликована: Янв. 1, 2025
Photocatalytic
degradation
of
biochar-capped
iron
oxide
nanocomposite
was
evaluated
with
malachite
green
and
trypan
blue
dyes
using
the
response
surface
methodology
based
on
Box–Behnken
design.
This
study
presents
a
novel,
eco-friendly,
and
cost-effective
magnetic
hybrid
photocatalyst,
Fe3O4@SiO2/L-tryptophan,
synthesized
through
scalable
three-step
green
approach
using
natural
agricultural
waste.
The
Fe3O4@SiO2/L-tryptophan
nanoparticle
features
core-shell
structure
with
high
surface
area
(63.14
m2/g),
strong
visible-light
absorption
(λ
>
448
nm),
narrow
band
gap
(1.84
eV),
superparamagnetic
properties
(22
emu/g),
enabling
efficient
separation
reusability.
Characterization
techniques
(XRD,
XPS,
FT-IR,
FE-SEM,
HR-TEM,
UV-vis
DRS,
TGA,
BET,
EIS)
confirmed
its
structural
stability,
charge
separation,
interfacial
transport.
photocatalyst
achieved
82.1%
oxidative
desulfurization
of
dibenzothiophene
(DBT)
conversion
rates
for
toluene
(85%)
styrene
(90%)
under
visible
light
O2
as
an
oxidant.
It
retained
over
85%
activity
after
five
cycles,
demonstrating
excellent
durability.
For
the
first
time,
all
components
are
derived
from
sources:
Fe3O4
sorghum
seed
extract,
SiO2
rice
husk,
L-tryptophan
enhanced
separation.
sustainable
synthesis
reduces
chemical
waste
energy
consumption,
setting
new
benchmark
environmentally
friendly
photocatalysts.
Artificial Cells Nanomedicine and Biotechnology,
Год журнала:
2023,
Номер
52(1), С. 46 - 58
Опубликована: Дек. 29, 2023
Novel
magnetic
and
metallic
nanoparticles
garner
much
attention
of
researchers
due
to
their
biological,
chemical
catalytic
properties
in
many
reactions.
In
this
study,
we
have
successfully
prepared
a
core–shell
Fe3O4@SiO2@PDA
nanocomposite
wrapped
with
Ag
using
simple
synthesis
method,
characterised
tested
on
small
cell
lung
cancer
antibacterial
strains.
Incorporating
provides
promising
advantages
biomedical
applications.
The
Fe3O4
were
coated
SiO2
obtain
negatively
charged
surface
which
is
then
polydopamine
(PDA).
Then
silver
assembled
surface,
results
the
formation
nanocomposite.
synthesised
characterized
SEM-EDAX,
dynamic
light
scattering,
XRD,
FT-IR
TEM.
work,
report
anticancer
activity
against
H1299
line
MTT
assay.
cytotoxicity
data
revealed
that
IC50
Fe3O4@SiO2@PDA@Ag
nanocomposites
cells
was
21.52
µg/mL.
Furthermore,
biological
Gram-negative
'Pseudomonas
aeruginosa'
Gram-positive
'Staphylococcus
aureus'
carried
out.
range
minimum
inhibitory
concentration
found
be
115
µg/mL
where
gentamicin
used
as
standard
drug.
synthesized
AgNPs
proves
its
supremacy
an
efficient
agent
may
act
potential
beneficial
molecule
chemoprevention
