Abstract
Antibiotic
resistance
is
one
of
the
biggest
public
health
problems
our
time.
The
nanoparticles
are
a
powerful
alternative
to
these
antibiotics.
Engineered
show
toxic
effects
on
bacteria
by
different
mechanisms.
bacteria–cell
interaction
engineered
exerts
their
through
changes
in
cell
wall,
membrane,
and
cytoplasm
content/density.
Thus,
death
occurs
as
result
deformation.
In
this
study,
cellular
damage
silver
nanoparticles,
which
known
have
strong
antibacterial
properties,
zirconium
oxide
silicon
engineering
less
known,
periodontopathic
(
Prevotella
intermedia
Aggregatibacter
actinomycetemcomitans
)
bacteria,
were
investigated
ultrastructural
changes.
lysis
separation
membrane
observed.
Both
types
treated
with
Ag
ENP
more
hollow
than
other
two
nanoparticles.
Discover Nano,
Journal Year:
2023,
Volume and Issue:
18(1)
Published: Nov. 17, 2023
Abstract
The
quest
to
synthesize
safe,
non-hazardous
Ag–ZnO
nanoomposites
(NCs)
with
improved
physical
and
chemical
properties
has
necessitated
green
synthesis
approaches.
In
this
research,
Launaea
cornuta
leaf
extract
was
proposed
for
the
of
NCs,
wherein
used
as
a
reducing
capping
agent.
antibacterial
activity
prepared
investigated
against
Escherichia
coli
Staphylococcus
aureus
through
disc
diffusion
method.
influence
temperature,
pH,
precursor
concentration
on
NCs
antimicrobial
efficacy
were
investigated.
nanoparticles
characterized
by
ATR-FTIR,
XRD,
UV–Vis,
FESEM,
TEM.
FTIR
results
indicated
presence
secondary
metabolites
in
which
assisted
nanoparticles.
XRD
confirmed
successful
crystalline
an
average
particle
size
21.51
nm.
SEM
TEM
images
synthesized
be
spherical
shape.
optimum
conditions
at
70
°C,
pH
7,
8%
silver.
Antibacterial
show
have
higher
microbial
inhibition
E.
than
S.
aureu
s
zones
21
±
1.08
19.67
0.47
mm,
respectively.
Therefore,
suggest
that
can
NCs.
Heliyon,
Journal Year:
2023,
Volume and Issue:
9(9), P. e19659 - e19659
Published: Aug. 31, 2023
In
this
research,
zinc
oxide
(ZnO)
nanoparticles
doped
with
different
percentages
of
produced
cobalt
using
the
green
synthesis
method.
ZnO
showed
good
cellular
and
microbial
toxicity
due
to
their
high
surface-to-volume
ratio.
Adding
metal
nanostructure
can
lead
appearance
a
new
feature.
To
investigate
effect
adding
metal,
synthesized
containing
3
6%
were
plant
extract.
The
resulting
nanostructures
characterized
by
Raman
spectroscopy,
UV–Visible
spectrometer,
X-ray
diffraction,
Field
emission
scanning
electron
microscopy.
Ultimately,
samples'
cytotoxicity
antimicrobial
tests
performed.
XRD
confirmed
formation
hexagonal
wurtzite
structure.
imaging
that
doping
resulted
in
decrease
average
crystal
size.
results
doping,
particle
size
decreased
slightly.
effects
all
three
studies,
leads
an
increase
compared
non-doped
nanoparticles.
Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
2024(1)
Published: Jan. 1, 2024
The
use
of
biosynthesized
metallic
and
bimetallic
nanoparticles
(NPs)
as
biocides
for
plant
protection
has
gained
significant
attention
in
recent
years
due
to
their
potential
sustainable
ecofriendly
crop
protection.
In
this
review
article,
we
discussed
the
biosynthesis
NPs
using
various
biological
sources
such
plants,
fungi,
bacteria,
algae.
We
explore
plausible
mechanisms
behind
biocidal
activity
these
NPs,
including
ability
disrupt
cellular
structures,
inhibit
enzyme
activity,
induce
oxidative
stress,
modulate
defense
responses.
also
highlight
challenges
limitations
associated
with
toxicity
nontarget
organisms,
impact
on
soil
health,
need
standardized
protocols
synthesis
characterization.
Additionally,
discuss
strategies
overcoming
challenges,
biocompatible
stabilizers,
controlled
release
formulations,
targeted
delivery
systems.
Overall,
hold
promise
effective
protection,
but
further
research
is
needed
fully
understand
action,
optimize
efficacy,
ensure
safe
agriculture.
addition
exploring
delves
into
cost‐benefit
analysis
application
Water Science & Technology,
Journal Year:
2022,
Volume and Issue:
86(9), P. 2303 - 2335
Published: Oct. 11, 2022
Abstract
Water
Science
&
Technology
issues
a
formal
retraction
in
relation
to
the
above
article
by
Saade
Abdalkareem
Jasim
et
al.
The
publisher
this
for
following
reasons.
Following
publication,
concerns
were
raised
regarding
potential
citation
manipulation
article,
due
large
number
of
inappropriate
references.
journal
did
not
receive
satisfactory
response
these
and
during
investigation
additional
about
authorship
including
authors'
contributions.
Editors-in-Chief
therefore
no
longer
have
confidence
reliability
findings
presented.
Water,
Journal Year:
2022,
Volume and Issue:
14(22), P. 3615 - 3615
Published: Nov. 10, 2022
Using
the
batch
adsorption
technique,
an
eco-friendly
polymer
composite
made
of
chitosan,
polyaniline,
and
iron
(III)
oxide
was
developed
for
removal
dye
contamination
from
wastewater.
Ultraviolet-visible
spectroscopy
(UV-Vis),
Fourier
transform
infrared
(FTIR),
scanning
electron
microscopy
(SEM),
X-ray
diffraction
(XRD),
transmission
(TEM),
EDX
(energy
dispersive
analysis),
thermogravimetric-derived
thermogravimetric
(TG-DTG)
techniques
were
used
to
characterize
sample.
According
EDX,
Ch-PANI-Fe2O3
hybrid
has
following
weight
ratios:
C
34.25%,
N
0.48%,
O
50.51%,
Fe
3.08%.
The
nanocomposite’s
surface
rough
with
pleats,
which
evident
SEM
TEM
images.
This
structure
likely
contributed
higher
rate
(91.5%).
analysis,
proportion
Fe2O3
nanoparticles
chitosan–polyaniline
changed
hybrids’
morphology
granular
irregular,
globular-like
structure,
supported
by
EDX.
results
demonstrated
that
this
matrix
(chitosan-PANI-Fe2O3)
nanocomposite
can
be
employed
as
adsorbent
effective
methyl
orange
dye,
well
wastewater
reusability.
Microscopy Research and Technique,
Journal Year:
2023,
Volume and Issue:
86(6), P. 669 - 685
Published: March 8, 2023
Here,
we
reported
the
biosynthesis
of
silver
nanoparticles
(AgNPs)
using
Urtica
dioica
(nettle)
leaf
extract
as
green
reducing
and
capping
agents
investigate
their
anticancer
antibacterial,
activity.
The
Nettle-mediated
biosynthesized
AgNPs
was
characterized
by
UV-Vis
a
spectrophotometer.
Their
size,
shape
elemental
analysis
were
determined
with
SEM
TEM.
crystal
structure
XRD
biomolecules
responsible
for
reduction
Ag+
FTIR
analysis.
indicated
strong
antibacterial
activity
against
pathogenic
microorganisms.
Again,
antioxidant
is
quite
high
when
compared
to
ascorbic
acid.
Anticancer
effect
AgNPs,
IC50
dose
XTT
MCF-7
cell
line
value
found
be
0.243
±
0.014
μg/mL
(%
w/v).
