Particle & Particle Systems Characterization,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 29, 2025
Abstract
In
present
research
article,
single‐step
biosynthesis
of
magnetic
iron
oxide
nanoparticles
(IONPs)
is
reported
by
using
Sapindus
mukorossi
(SM)
fruit
extract
as
a
source
reducing
and
capping
agents.
Biosynthesized
spherical
IONPs
are
characterized
XRD,
ATR‐IR,
FE‐SEM,
VSM,
BET,
XPS
techniques.
VSM
analysis
indicates
an
Ms
value
30.505
emu
g
−1
,
BET
reveals
specific
surface
area
9.691
m
2
confirms
the
formation
Fe₂O₃.
NMR,
GC‐MS,
HR‐MS
techniques
reveal
biological
molecules
in
SM
including
flavonoids,
diterpenoids,
antioxidants.
These
biomolecules
perform
dynamic
role
capping,
stabilizing,
agents
to
synthesize
stable
IONPs,
bottom‐up
synthesis
approach.
They
exhibit
nonantibacterial
potential
against
both
Gram‐positive
(
Staphylococcus
aureus,
(S.
aureus),
Bacillus
subtilis
(B.
subtilis)
)
Gram‐negative
Escherichia
coli,
(E.
coli),
Pseudomonas
aeruginosa
(P.
aeruginosa)
microorganisms.
Nonantifungal
different
fungi
Penicillium
spp.,
Aspergillus
flavus
(A.
flavus),
Fusarium
oxysporum
(F.
oxysporum)
Rhizoctonia
solani
(R.
solani)
also
observed.
The
biosynthesized
inertness
toward
L929
normal
fibroblast
cell
line,
making
them
promising
candidate
for
drug
delivery
various
therapeutic
diagnostic
applications.
Materials Chemistry and Physics,
Journal Year:
2023,
Volume and Issue:
313, P. 128787 - 128787
Published: Dec. 7, 2023
The
present
study
investigates
the
algae-mediated
synthesis,
characterization,
and
H2O2
sensing
ability
of
silver
nanoparticles
using
Sargassum
spp.
extract.
synthesized
were
spherical
agglomerates
exhibited
an
absorbance
peak
at
418
nm,
as
analyzed
by
FE-SEM
UV–vis
spectrophotometric
analysis.
TEM-SAED
analysis
interpreted
size
between
2
–
35
nm
crystallinity
corresponding
to
face-centered
cubic
(FCC)
structure.
This
was
further
supported
from
XRD
findings,
which
ascertained
presence
(111),
(200),
(220),
(311)
lattice
planes.
FT-IR
confirmed
capping
algal
phenolics
functional
groups,
XPS
studies.
observed
be
highly
stable
in
aqueous
suspensions,
due
zeta
potential
value
(−22.6
mV).
On
incubation
nanoparticles,
with
solutions,
decolorization
nanoparticle
solution
along
reduction
nm.
color
change
could
utilized
for
detection
contaminated
samples.
Therefore,
this
reveals
sustainable
biomass
synthesizing
beneficial
exploited
environmental
applications.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
6(3)
Published: Feb. 27, 2024
Abstract
Increasing
concern
about
environmental
pollution
attracts
researchers
to
develop
eco-friendly,
low-cost,
and
sustainable
approaches
for
green
biosynthesis
of
nanoparticles
overcome
pollutants.
This
study
focuses
on
the
synthesis
ceria
NPs
using
Spirulina
platensis
extract
as
a
stabilizing
reducing
agent.
Characterization
measurements,
such
optical
properties,
X-ray
diffraction,
SEM,
TEM,
FT-IR
spectroscopy,
confirmed
successful
crystalline
stable
with
well-defined
morphological
features.
The
calculated
bandgaps
energy
pure
ceria,
CeO
2
@Sp
2:1,
1:1
were
3.3,
3.15,
2.94
eV,
respectively.
as-synthesized
showed
an
excellent
degradation
efficacy
MB
dye
under
UV
irradiation.
Furthermore,
high
photodegradation
efficiency
(R%
=
86.2
88.8%)
than
76.4%)
at
certain
specific
conditions
(pH
11,
contact
time
90
min,
catalyst
dose
0.3
g/L
initial
concentration
100
mg/L).
isothermal
constants
that
is
well-fitted
Freundlich
isotherm
model
(R
>
0.99)
better
Langmuir
<
0.8).
kinetics
models
revealed
rapid
rate
dye,
which
follows
pseudo-second-order
C
e
values
ranging
from
83.33
89.29
mg/g,
R
0.99.
These
results
indicated
potential
applicability
promising
avenue
developing
advanced
wastewater
treatment
applications.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 20, 2025
In
this
study,
brown
macroalgae
Hormophysta
triquetra
(HT)
collected
from
the
Qatari
coast
is
used
to
biosynthesize
silver
nanoparticles
(AgNPs)
its
aqueous
(AQ),
chloroform:
methanol
(MCF),
and
ethanolic
extracts
(ET).
The
NPs
are
characterized
using
Transmission
electron
microscopy
(TEM),
Fourier
transform
infrared
spectroscopy
(FTIR),
X-ray
diffraction
(XRD),
Gas
chromatography/Mass
spectrometry
(GC/MS)
photoelectron
(XPS).
were
evaluated
for
their
antibacterial
activities
by
disc-diffusion
method
minimum
inhibitory
concentrations
(MIC)
assessed.
synthesized
through
biological
process
exhibited
significant
efficacy
against
Escherichia
coli,
Bacillus
subtilis,
Staphylococcus
aureus,
Pseudomonas
stutzeri,
fragi
all
three
NPs.
AQ-AgNP
ET-AgNP
showed
higher
zones
of
inhibition
P.
with
22.5
mm
25
respectively.
On
other
hand,
MCF-AgNP
a
zone
E.
coli
an
23.5
mm.
inhibited
growth
bacterial
strains
deforming
structure
forming
pits.
results
revealed
that
HT
could
be
as
potential
candidate
produce
AgNPs
have
efficient
both
types
bacteria
i.e.,
Gram-positive
(B.
subtilis
S.
aureus)
Gram-negative
(E.
fragi).
