Materials Research Express,
Год журнала:
2024,
Номер
11(8), С. 085005 - 085005
Опубликована: Авг. 1, 2024
Abstract
The
over-production
of
free
radicals
in
the
body
causes
oxidant
damage
body.
Currently,
zinc
oxide
nanoparticles
(ZnO
NPs)
are
gaining
attention
most
scientists
because
their
excellent
physical,
chemical,
and
biological
properties.
In
this
work,
ZnO
NPs
were
synthesized
using
petal
extract
C.
officinalis
L.
An
absorbance
spectrum
was
recorded
an
ultraviolet-visible
(UV–Vis)
spectrophotometer.
band
around
368
nm
confirms
formation
NPs.
transmission
electron
microscopy
(TEM)
analysis
clearly
shows
that
spherical
shape
with
average
particle
size
∼
16
nm.
field
emission
scanning
microscope
(FE-SEM)
result
demonstrates
morphology
large
agglomeration
particles.
energy-dispersive
x-ray
spectroscopy
(EDS)
presence
Zn
NPs’.
diffraction
(XRD)
peaks
represent
crystalline
structure
27.22
Fourier
transform
infra-red
(FT-IR)
range
4000-500
cm
−1
.
ester
carboxylic
groups
found
at
1017
,
952
688
609
514
due
to
Zn-O
stretch
FT-IR
spectrum.
Further
material
evaluated
by
2,
2-diphenyl-1-picrylhydrazyl
(DPPH)
assay
evaluate
its
antioxidant
activity.
It
showed
exhibited
significant
activity
through
scavenging
DPPH
radicals.
Thus,
it
could
be
seen
synthesis
naturally
occurring
plant
product
acts
as
alternative
chemical
antioxidant.
Hence,
herbal
proven
a
potent
agent
can
used
several
medicinal
applications.
Results in Chemistry,
Год журнала:
2024,
Номер
7, С. 101368 - 101368
Опубликована: Янв. 1, 2024
Zinc
oxide
nanoparticles
(ZnO
NPs)
exhibit
distinctive
characteristics,
making
them
highly
sought-after
in
many
sectors.
Nevertheless,
conventional
techniques
for
producing
ZnO-NPs
are
linked
to
environmental
and
health
hazards
due
toxic
substances.
In
this
review,
we
study
zinc
synthesized
from
plant
extracts
their
subsequent
biomedical
uses
detail.
Research
shows
that
several
different
employed
manufacturing
ZnO
nanoparticles.
Leaves,
fruits,
seeds,
roots,
complete
plants
all
included
these
extracts.
Phytochemicals
such
as
phenolic
compounds,
alkaloids,
flavonoids,
terpenoids
a
part
of
biological
matrices.
compounds
show
bioreduction
mechanism,
act
stabilizing
reducing
agent.
The
attributes
(NPs),
including
size,
shape,
crystallinity,
may
be
altered
by
adjusting
the
extract
variety,
concentration,
synthesis
conditions.
Consequently,
formed
display
notable
diversity
physical
chemical
subsequently
impacting
functionality.
manufactured
using
green
methods
extensive,
beneficial
effects
antibacterial
activity
against
various
pathogens,
anti-inflammatory
possible
anticancer
activities.
Nanoparticles
have
been
integrated
into
wound
dressings,
used
carriers
medication
delivery,
utilized
biosensing
imaging
applications.
enhanced
biocompatibility
reduced
toxicity
green-processed
techniques,
comparison
those
made
approaches,
make
very
appealing
use
contexts.
Moreover,
paper
examines
mechanisms,
explicitly
focusing
on
involvement
phytochemicals
processes
reduction
stabilization.
Additionally,
emphasizes
difficulties
potential
future
directions
optimizing
processes,
increasing
capacity,
facilitating
therapeutic
Molecules,
Год журнала:
2024,
Номер
29(15), С. 3482 - 3482
Опубликована: Июль 25, 2024
Nanoparticles
are
structures
that
possess
unique
properties
with
high
surface
area-to-volume
ratio.
Their
small
size,
up
to
100
nm,
and
potential
for
modifications
have
enabled
their
use
in
a
wide
range
of
applications.
Various
factors
influence
the
applications
NPs,
including
synthesis
method
physical
attributes
such
as
size
shape.
Additionally,
materials
used
NPs
primary
determinants
application.
Based
on
chosen
material,
generally
classified
into
three
categories:
organic,
inorganic,
carbon-based.
These
categories
include
variety
materials,
proteins,
polymers,
metal
ions,
lipids
derivatives,
magnetic
minerals,
so
on.
Each
material
possesses
activity
application
NPs.
Consequently,
certain
typically
particular
areas
because
they
higher
efficiency
along
tenable
toxicity.
Therefore,
classification
base
NP
hold
significant
importance
both
research
In
this
paper,
we
discuss
these
classifications,
exemplify
most
major
categorize
them
according
preferred
area
This
review
provides
an
overall
application,
Abstract
Background
and
objectives
Microbial
cells
capability
to
tolerate
the
effect
of
various
antimicrobial
classes
represent
a
major
worldwide
health
concern.
The
flexible
multi-components
nanocomposites
have
enhanced
physicochemical
characters
with
several
improved
properties.
Thus,
different
biological
activities
biosynthesized
starch/silver-selenium
nanocomposite
(St/Ag-Se
NC)
were
assessed.
Methodology
St/Ag-Se
NC
was
using
Cladosporium
cladosporioides
CBS
174.62
(
C.
)
strain.
shape
average
particle
size
investigated
scanning
electron
microscope
(SEM)
high-resolution
transmission
(HR-TEM),
respectively.
On
other
hand,
on
two
cancer
cell
lines
red
blood
(RBCs)
evaluated
its
hydrogen
peroxide
(H
2
O
scavenging
Moreover,
effects
microbial
species
in
both
planktonic
biofilm
growth
forms
examined.
Results
successfully
oval
spherical
mean
diameter
67.87
nm
as
confirmed
by
HR-TEM
analysis.
showed
promising
anticancer
activity
toward
human
colorectal
carcinoma
(HCT-116)
breast
(MCF-7)
where
IC
50
21.37
19.98
µg/ml,
Similarly,
little
RBCs
observed
low
concentration.
As
well,
highest
H
(42.84%)
recorded
at
concentration
mg/ml.
Additionally,
Staphylococcus
epidermidis
S.
ATCC
12,228
Candida
albicans
10,231
highly
affected
bacterial
fungal
strains
minimum
inhibitory
concentrations
(MICs)
18.75
noticeable
dependent.
A
high
suppression
percentage,
87.5%
68.05%,
aureus
when
exposed
1
mg/ml
0.5
mg/ml,
Conclusion
excellent
antioxidant
activity,
haemocompatibility,
anti-proliferative
concentrations.
Also,
it
exhibited
antibiofilm
activities.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Апрель 17, 2024
Abstract
Zinc
ferrite
nanoparticles
(ZnF
NPs)
were
synthesized
by
a
green
method
using
Psidium
guava
Leaves
extract
and
characterized
via
structural
optical
properties.
The
surface
of
ZnF
NPs
was
stabilized
with
citric
acid
(CA)
direct
addition
to
obtain
(ZnF-CA
NPs),
then
lipase
(LP)
enzyme
immobilized
on
ZnF-CA
modified
ZnF-CA-LP
nanocomposite
(NCs).
prepared
sample’s
photocatalytic
activity
against
Methylene
blue
dye
(MB)
determined.
antioxidant
NCs
measured
1,1-diphenyl-2-picryl
hydrazyl
(DPPH)
as
source
free
radicals.
In
addition,
the
antibacterial
antibiofilm
capabilities
these
substances
investigated
testing
them
gram-positive
Staphylococcus
aureus
(
S.
ATCC
25923)
gram-negative
Escherichia
coli
E.
25922)
bacterial
strains.
discovered
be
situated
at
core
material,
determined
XRD,
HRTEM,
SEM
investigations,
while
CA
enzymes
coated
in
this
core.
crystallite
size
around
35.0
nm
(311)
plane.
Results
obtained
suggested
that
0.01
g
achieved
96.0%
removal
5.0
ppm
MB
pH
9.0.
In-vitro
zone
inhibition
(ZOI)
minimum
inhibitory
concentration
(MIC)
results
verified
exhibited
its
encouraged
antimicrobial
(20.0
±
0.512,
27.0
0.651
mm
ZOI,
respectively)
&
(1.25,
0.625
μg/ml
MIC,
respectively).
showed
percentage
(88.4%)
(96.6%).
Hence,
are
promising
for
potential
applications
environmental
biomedical
uses.
Green Energy and Resources,
Год журнала:
2024,
Номер
2(2), С. 100073 - 100073
Опубликована: Апрель 15, 2024
This
research
presents
a
facile
and
inexpensive
method
for
synthesizing
ZnO
nanoparticles
using
Nauclea
latifolia
fruit
extract
as
bioreductant
stabilizer.
The
prepared
particles
were
characterized
some
analytical
techniques,
including
X-ray
diffraction
(XRD)
crystallinity
phase
identification,
scanning
electron
microscopy
(SEM)
to
study
surface
morphology,
Fourier
transform
infrared
(FTIR)
spectroscopy
functional
groups
analysis,
transmission
(TEM)
grain
size
UV-Vis
optical
properties,
Brunauer-Emmett-Teller
(BET)
area
analysis.
XRD
analysis
revealed
hexagonal
wurtzite
structure
with
an
average
crystallite
of
14.40
nm.
FTIR
showed
absorption
peaks
at
3659,
1341,
460
cm-1,
corresponding
hydroxyl,
carboxylic,
Zn
–
O,
respectively.
SEM
image
agglomerated
morphology
flower-like
shape.
TEM
estimated
the
particle
range
be
12.54
-
17.35
broad
peak
373
BET
277.420
m2/g
specific
area.
A
batch
adsorption
experiment
conducted
on
performance
methyl
green
(MG)
removal
from
aqueous
solution
highest
efficiency
99.96%
60
min
agitation
time
pH
7,
0.05
g
NPs,
confirming
particles.
results
modelling
that
data
best
fit
Freundlich
isotherm
general-order
kinetic
models.
Thermodynamic
investigation
confirmed
process
spontaneous,
feasible,
endothermic,
physical.
Finally,
simplicity
synthesis
evaluation
indicate
efficient
cost-effective
adsorbent
MG
recovery
has
been
successfully
prepared.
