Journal of Hazardous Materials Advances,
Journal Year:
2024,
Volume and Issue:
13, P. 100401 - 100401
Published: Jan. 13, 2024
Bio-synthesized
metal
oxide
(MeO)
nanoparticles
(NPs)
have
triggered
a
huge
global
research
interest
owing
to
their
advancement
and
various
environmental
remediation,
personal
care
products,
medical,
energy,
sensing,
water
treatment
applications.
They
demonstrate
developing
assets
in
industries,
remarkably
with
heightened
physicochemical,
optical,
mechanical,
electronic
attributes.
The
physical
chemical
routes
been
sticking
point
the
production
of
MeO
NPs,
natural
risks
linked
utilizing
these
approaches.
growth
NPs
via
biologic
method
employing
plants
microorganisms
as
precursor
material
for
metal-ions
(MIs)
reduction
stabilization
has
focus
scientists
recent
years.
Hence,
this
review,
comprehensive
brief
bio-synthesis
approaches
using
plant
extracts
(PEs)
microorganism
components
well
factors
affecting
bio-production
applications
toxicity
were
considered.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(1), P. 513 - 523
Published: Jan. 1, 2025
In
this
study,
a
nanocomposite
based
on
copper
oxide–zinc
oxide
nanoparticles
and
Gum
Arabic
(GA@CuO–ZnO
nanocomposite)
was
successfully
synthesized
using
green
method
for
increasing
antimicrobial
anticancer
activities.
AIP Advances,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 1, 2025
This
study
explores
the
innovative
use
of
an
aqueous
spirulina
and
chlorella
mixture
to
synthesize
bimetallic
zinc/manganese
nanoparticles
(ZnO–Mn
NPs),
showcasing
a
sustainable
approach
nanomaterial
development.
The
were
thoroughly
characterized
using
advanced
techniques,
including
UV–visible
spectrophotometry,
Fourier
transform
infrared
spectroscopy
(FTIR),
dynamic
light
scattering,
scanning
electron
microscopy,
transmission
energy-dispersive
x-ray
spectroscopy.
These
analyses
revealed
that
ZnO–Mn
NPs
have
average
size
314.4
nm,
polydispersity
index
0.28,
zeta
potential
−23.86
mV,
indicating
excellent
stability
uniform
distribution.
antifungal
properties
synthesized
tested
in
vitro
against
key
tomato
pathogens,
Sclerotinia
sclerotiorum
Fusarium
equiseti.
FTIR
analysis
highlighted
role
phytochemicals
from
algal
extracts
reduction
capping
nanoparticles.
While
activity
observed
was
modest
at
evaluated
concentrations,
strong
biocompatibility
underscore
their
as
eco-friendly
solutions
agricultural
applications.
research
highlights
promise
utilizing
natural
develop
effective
nanoparticles,
offering
greener
alternative
for
managing
plant
diseases
enhancing
farming
practices.
Biomass Conversion and Biorefinery,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 12, 2024
Abstract
With
an
increasing
focus
on
green
technologies,
this
research
aimed
to
synthesize
copper
oxide
nanoparticles
(CuO-NPs)
using
leaf
extracts
from
Allahabad
Safeda
and
Hisar
for
environmental
health
protection.
A
range
of
concentrations
were
employed
in
the
synthesis
nanoparticles,
utilizing
1–9%
extract
3–11%
Safeda.
The
synthesized
CuO-NPs
characterized
by
UV–visible
spectrophotometry,
Dynamic
light
scattering,
Fourier
transform
infrared
spectroscopy,
Scanning
electron
microscope
with
energy-dispersive
X-ray
spectroscopy.
3%
5%
exhibited
a
particle
size
15.88
nm
14.05
nm,
respectively.
superior
antibacterial,
antioxidant,
antidiabetic,
photocatalytic
properties.
Their
antibacterial
tests
demonstrated
significant
inhibition
zones
against
Staphylococcus
aureus
(20.5
cm),
Streptococcus
latis
(20.7
Escherichia
coli
(19.5
Pseudomonas
aeruginosa
(19.7
mm).
Additionally,
(70
µg/mL)
68.23%
scavenging
activity
2,2-diphenyl-1-picrylhydrazyl.
Moreover,
same
at
100
µg/mL
concentration
showed
67.32%
α-amylase
75.18%
α-glucosidase
inhibition,
confirming
their
antidiabetic
activities.
Furthermore,
these
high
performance
degradation,
degrading
82.31%
methylene
blue
88.54%
crystal
violet
within
150
min
UV
irradiation.
Overall,
findings
highlight
feasibility
potential
applications
treatment,
combating
diabetes,
antioxidation,
environmentally
friendly
dye
photodegradation
process.
Graphical
BMC Microbiology,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: June 17, 2024
Abstract
Background
Addressing
microbial
resistance
urgently
calls
for
alternative
treatment
options.
This
study
investigates
the
impact
of
a
bimetallic
formulation
containing
colistin,
silver,
and
copper
oxide
on
pandrug-resistant,
highly
virulent
Pseudomonas
aeruginosa
(P.
aeruginosa)
isolate
from
cancer
patient
at
National
Cancer
Institute,
Cairo
University,
Egypt.
Methods
Silver
nanoparticles
(Ag
NPs),
(CuO
silver-copper
(Ag-CuO
NPs)
were
synthesized
using
gamma
rays,
combined
with
colistin
(Col),
characterized
by
various
analytical
methods.
The
antimicrobial
activity
Col-Ag
NPs,
Col-CuO
Col-Ag-CuO
NPs
against
P.
was
evaluated
agar
well
diffusion
method,
their
minimum
inhibitory
concentration
(MIC)
determined
broth
microdilution.
Virulence
factors
such
as
pyocyanin
production,
swarming
motility,
biofilm
formation
assessed
before
after
NPs.
in
vivo
efficacy
Galleria
mellonella
model,
antibacterial
mechanism
examined
through
membrane
leakage
assay.
Results
optimal
synthesis
Ag
occurred
ray
dose
15.0
kGy,
highest
optical
density
(OD)
2.4
375
nm.
Similarly,
CuO
had
an
OD
1.5
330
Bimetallic
Ag-CuO
most
potent
yielding
1.9
425
MIC
significantly
reduced
when
nanoparticles:
8
µg/mL
alone,
0.046
0.0117
four-fold
compared
to
Increasing
sub-inhibitory
0.29
×
10
-2
0.58
32–64%
twitching
motility
34–97%.
At
these
concentrations,
production
decreased
39–58%,
inhibited
33–48%.
non-toxic
,
showing
100%
survival
day
3,
similar
saline-treated
group.
Conclusions
conjugated
presents
promising
combating
challenging
pathogen
hospital
settings.
Further
research
is
needed
explore
elucidate
mechanisms
underlying
effects
colistin-bimetallic
persistence
dissemination.
