IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 19, 2024
In
the
current
scenario,
various
industries
such
as
pharmaceuticals,
biomedical
sectors,
cosmetics,
photovoltaics,
and
automotive
utilize
zinc
oxide
nanoparticles
(ZnO
NPs)
widely
due
to
their
exceptional
potentials
high
surface
area-to-volume
ratio.
However,
researchers
are
still
working
improve
potential
of
ZnO
NPs
antimicrobial,
anticancer,
antioxidant,
antidiabetic,
etc.
This
chapter
highlighted
plants
microbial
extract-based
synthesis
methods
comparative
understanding
established
with
laser
ablation,
chemical
reduction,
milling,
sputtering.
contrast,
green
offers
an
eco-friendly
chemical-free
approach
for
biological
applications.
The
method
involves
a
range
extract
compositions,
including
secondary
metabolites
flavonoids,
enzymes,
proteins,
sugars,
which
reduce
stabilize
NPs,
influencing
structure,
shape,
size,
morphology.
Biologically
synthesized
cost-effective
nature,
significant
medication
distribution
sensing
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(4), P. 2958 - 2980
Published: Jan. 1, 2025
Achieving
the
smallest
crystallite/particle
size
of
zinc
oxide
nanoparticles
(ZnO
NPs)
reported
to
date,
measuring
5.2/12.41
nm
with
Justicia
adhatoda
(J.
adhatoda)
leaf
extract,
this
study
introduces
a
facile
green
synthesis.
Utilizing
aqueous
J.
extract
as
both
reducing
and
stabilizing
agent,
method
leverages
plant's
rich
phytochemical
composition
produce
highly
crystalline
morphologically
controlled
ZnO
NPs.
This
precise
particle
control
highlights
effectiveness
synthesis
process
in
morphological
tuning.
The
synthesized
NPs
were
thoroughly
characterized
using
XRD,
UV-vis
spectroscopy,
FTIR,
FESEM,
HRTEM,
which
collectively
revealed
superior
crystallinity,
morphology,
unique
surface
properties
conferred
by
bio-capping.
photocatalytic
performance
these
biogenic
was
evaluated
for
degradation
two
model
pollutants:
malachite
(MG),
synthetic
dye,
4-nitrophenol
(4-NP),
toxic
organic
compound.
exhibited
exceptional
efficiency,
achieving
99.8%
MG
within
180
minutes
demonstrating
rapid
reduction
4-NP
4-aminophenol
reaction
rate
constant
0.245
min-1
under
UV
sunlight
irradiation.
Mechanistic
studies
attributed
high
reactive
oxygen
species
(ROS)
generation
electron-hole
pair
interactions,
supported
improved
charge
separation
area.
work
not
only
establishes
potential
adhatoda-mediated
addressing
persistent
pollutants
but
also
sets
benchmark
size-controlled
By
delivering
scalable
eco-friendly
water
remediation
technologies,
advances
nanotechnology.
Materials Research Express,
Journal Year:
2024,
Volume and Issue:
11(8), P. 085005 - 085005
Published: Aug. 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.
Plants,
Journal Year:
2025,
Volume and Issue:
14(5), P. 732 - 732
Published: Feb. 27, 2025
Maize
(Zea
mays
L.)
is
an
important
crop
grown
for
food,
feed,
and
energy.
In
general,
maize
yield
decreased
due
to
drought
stress
during
the
reproductive
stages,
and,
hence,
it
critical
improve
grain
under
drought.
A
field
experiment
was
conducted
with
a
split-plot
design.
The
main
factor
irrigation
regime
viz.
well-irrigated
conditions
withholding
from
tasseling
filling
21
days.
subplots
include
six
treatments,
namely,
(i)
control
(water
spray),
(ii)
zinc
oxide
@
100
ppm,
(iii)
manganese
20
(iv)
nZnO
ppm
+
nMnO
(v)
Tamil
Nadu
Agricultural
University
(TNAU)
Nano
Revive
1.0%,
(vi)
sulfate
0.25%
0.25%.
During
stress,
anthesis–silking
interval
(ASI),
chlorophyll
b
content,
proline,
starch,
carbohydrate
fractions
were
recorded.
At
harvest,
grain-filling
rate
duration,
per
cent
green
leaf
area,
traits
Drought
increased
proline
(38.1%)
(0.45
d)
over
irrigated
condition.
However,
foliar
application
of
ZnO
(100
ppm)
(20
lowered
ASI
index,
content
water
spray.
seed-filling
(17%),
duration
(11%),
seed
(19%)
Nevertheless,
(90%),
(13%),
(52%)
by
spraying
These
findings
suggest
that
significantly
conditions.
