Abstract
Reduction
of
nitroarenes
was
achieved
using
magnetically
separable
and
reusable
iron
oxide
nanoparticles
(Fe
3
O
4
@
RA
NPs)
Rhododendron
arboreum
(
)
flower
extract
with
high
yields
in
water
hydrazine
hydrate
as
a
green
hydrogen
source.
The
synthesis
the
biogenic
NPs
has
been
done
tools
displays
excellent
magnetic
properties,
which
have
proved
by
vibrating
sample
magnetometry
(VSM).
Further,
field‐emission
scanning
electron
microscopy
(FE‐SEM),
Fourier
transform
infrared
spectroscopy
(FTIR),
energy
dispersive
X‐ray
(EDX),
diffraction
(XRD),
photoelectron
(XPS),
thermogravimetric
analysis
(TGA),
Brunauer–Emmett–Teller
(BET),
used
for
characterization
synthesized
Fe
NPs.
TEM
XRD
revealed
crystalline
nature
size
10.8
nm.
BET
surface
area
total
pore
volume
were
observed
147.098
m
2
/g
0.323837
cc/g,
respectively.
VSM
displayed
super
paramagnetic
behavior
hence
reused
up
to
six
consecutive
cycles
without
compromising
its
catalytic
performance,
further
approved
FTIR
recycled
Wide
substrate
scope
functional
groups
tolerance,
large‐scale
reactions
(up
1
g),
key
pharmaceutical
drug,
paracetamol,
are
some
adding
points
Adsorption Science & Technology,
Год журнала:
2022,
Номер
2022
Опубликована: Янв. 1, 2022
Nanotechnology
and
nanoparticles
(NPs)
have
increasingly
been
studied
as
an
alternative
for
antibiotics
because
of
the
feasibility
to
be
used
in
implantable
devices
both
bacterial
detection
infection
prevention.
The
low
rate
resistance
development
against
NPs
its
multiple
mode
action
has
contributed
increased
acceptance
clinical
setting.
Further
their
anticancer
activity
many
human
cancer
cell
lines
including
breast
ovarian
documented.
Fe2O3-NPs
could
antibacterial
assessment.
Iron
oxide,
apart
from
being
available
extensively
cheap,
also
plays
a
role
biological
processes,
making
it
interesting
metal
NPs.
aim
present
study
revolves
around
generation
characterization
iron
oxide
Fe2O3-NPs,
followed
by
assessment
antimicrobial
activities.
Synthesis
was
performed
hydrothermal
approach,
done
UV-visible,
X-ray
diffraction
(XRD),
Fourier-transform
infrared
spectroscopy
(FTIR)
analyses,
transmission
electron
microscopy
(TEM).
Antimicrobial
checked
agar
diffusion
assay
Bacillus
subtilis,
Pseudomonas
aeruginosa,
Staphylococcus
aureus,
Escherichia
coli,
Candida
albicans.
Anticancer
assessed
using
cervical
carcinoma
line
(HeLa)
MCF7.
developed
exhibited
characteristic
absorption
curve
500-600
nm
wavelength
range
UV-visible
analysis,
XRD
peaks
were
found
index
rhombohedral
shape,
FTIR
analysis
ascertained
bonds
functional
groups
at
wavenumber
400
4000
cm-1.
detected
significant
effect
aureus
subtilis
with
zones
inhibition:
21
22
mm,
respectively.
Likewise,
show
good
towards
tested
fungal
strain
albicans
zone
inhibition
24
mm.
2,5-diphenyl-2H-tetrazolium
bromide
(MTT)
identified
lines.
Our
documents
successful
having
excellent
Molecules,
Год журнала:
2023,
Номер
28(8), С. 3403 - 3403
Опубликована: Апрель 12, 2023
Iron
oxide
nanoparticles
(NPs)
have
attracted
substantial
interest
due
to
their
superparamagnetic
features,
biocompatibility,
and
nontoxicity.
The
latest
progress
in
the
biological
production
of
Fe3O4
NPs
by
green
methods
has
improved
quality
applications
significantly.
In
this
study,
fabrication
iron
from
Spirogyra
hyalina
Ajuga
bracteosa
was
conducted
via
an
easy,
environmentally
friendly,
cost-effective
process.
fabricated
were
characterized
using
various
analytical
study
unique
properties.
UV-Vis
absorption
peaks
observed
algal
plant-based
at
289
nm
306
nm,
respectively.
Fourier
transform
infrared
(FTIR)
spectroscopy
analyzed
diverse
bioactive
phytochemicals
present
plant
extracts
that
functioned
as
stabilizing
capping
agents
NPs.
X-ray
diffraction
revealed
crystalline
nature
both
biofabricated
small
size.
Scanning
electron
microscopy
(SEM)
algae
are
spherical
rod-shaped,
averaging
52
75
Energy
dispersive
showed
green-synthesized
require
a
high
mass
percentage
oxygen
ensure
synthesis.
exhibited
stronger
antioxidant
properties
than
algal-based
efficient
antibacterial
potential
against
E.
coli,
while
displayed
higher
zone
inhibition
S.
aureus.
Moreover,
superior
scavenging
compared
This
might
be
greater
number
plants
surround
during
fabrication.
Hence,
over
improves
applications.
Processes,
Год журнала:
2022,
Номер
10(11), С. 2282 - 2282
Опубликована: Ноя. 4, 2022
This
review
focuses
on
the
role
of
magnetic
nanoparticles
(MNPs),
their
physicochemical
properties,
potential
applications,
and
association
with
consequent
toxicological
effects
in
complex
biologic
systems.
These
MNPs
have
generated
an
accelerated
development
research
movement
last
two
decades.
They
are
solving
a
large
portion
problems
several
industries,
including
cosmetics,
pharmaceuticals,
diagnostics,
water
remediation,
photoelectronics,
information
storage,
to
name
few.
As
result,
more
put
into
contact
biological
organisms,
humans,
via
interacting
cellular
structures.
situation
will
require
deeper
understanding
these
particles’
full
impact
systems,
even
though
extensive
studies
been
carried
out
different
systems
discussing
toxicology
aspects
MNP
used
biomedical
they
give
mixed
inconclusive
results.
Chemical
agencies,
such
as
Registration,
Evaluation,
Authorization,
Restriction
substances
(REACH)
legislation
for
registration,
evaluation,
authorization
materials
from
European
Agency
(ECHA),
held
meetings
discuss
issue.
However,
nanomaterials
(NMs)
being
categorized
by
composition
alone,
ignoring
properties
possible
risks
that
size,
stability,
crystallinity,
morphology
could
bring
health.
Although
initiatives
discussed
around
world
correct
management
disposal
materials,
thanks
work
researchers
everywhere
addressing
issue
related
impacts
concerns,
new
nanoethics
nanosafety
branch
help
clarify
together
about
nanoparticles,
questions
than
answers
arisen
regarding
behavior
wide
range
same
tissue.
The
generation
consolidative
framework
behaviors
is
necessary
allow
future
applications
be
manageable.
Nanomaterials,
Год журнала:
2023,
Номер
13(7), С. 1244 - 1244
Опубликована: Март 31, 2023
The
use
of
natural
reducing
and
capping
agents
has
gained
importance
as
a
way
to
synthesize
nanoparticles
(NPs)
in
an
environmentally
sustainable
manner.
Increasing
numbers
studies
have
been
published
on
the
green
synthesis
NPs
using
sources
such
bacteria,
fungi,
plants.
In
recent
years,
honey
metal
oxide
become
new
promising
area
research.
Honey
acts
both
stabilizing
agent
NP
process
serves
precursor.
This
review
focuses
silver
(Ag-NPs)
zinc
(ZnO-NPs),
emphasizing
its
role
agent.
Additionally,
comprehensive
examination
bio-based
capping/stabilizing
used
honey-mediated
biosynthesis
mechanism
is
provided.
Finally,
looks
forward
friendly
methods
for
synthesis.
Antibiotics,
Год журнала:
2024,
Номер
13(2), С. 111 - 111
Опубликована: Янв. 23, 2024
Iron
oxide
nanoparticles
(IONPs)
have
many
practical
applications,
ranging
from
environmental
protection
to
biomedicine.
IONPs
are
being
investigated
due
their
high
potential
for
antimicrobial
activity
and
lack
of
toxicity
humans.
However,
the
biological
is
not
uniform
depends
on
synthesis
conditions,
which
affect
shape,
size
surface
modification.
The
aim
this
work
synthesise
using
a
mixed
method,
i.e.,
chemical
co-precipitation
combined
with
biogenic
modification,
extracts
spent
hops
(Humulus
lupulus
L.)
obtained
as
waste
product
supercritical
carbon
dioxide
hop
extraction.
Different
(water,
dimethyl
sulfoxide
(DMSO),
80%
ethanol,
acetone,
water)
were
further
evaluated
antioxidant
based
silver
nanoparticle
capacity
(SNPAC),
total
phenolic
content
(TPC)
flavonoid
(TFC).
characterised
via
UV-vis
spectroscopy,
scanning
electron
microscopy
(SEM),
energy-dispersive
spectrometry
(EDS)
Fourier-transform
infrared
(FT-IR)
spectroscopy.
Spent
showed
number
compounds.
efficiency
solvents
used
extraction
can
be
classified
follows:
DMSO
>
ethanol
acetone
water.
FT-IR/ATR
spectra
revealed
involvement
flavonoids
such
xanthohumol
and/or
isoxanthohumol,
bitter
acids
(i.e.,
humulones,
lupulones)
proteins
in
modification
IONPs.
SEM
images
granular,
spherical
structure
diameters
81.16
142.5
nm.
Surface
generally
weakened
against
tested
Gram-positive
Gram-negative
bacteria
yeasts
by
half.
Only
extract
improved
antibacterial
properties
(Staphylococcus
epidermidis,
Staphylococcus
aureus,
Micrococcus
luteus,
Enterococcus
faecalis,
Bacillus
cereus)
MIC
value
2.5–10
mg/mL
0.313–1.25
mg/mL.
