Physica Scripta,
Journal Year:
2024,
Volume and Issue:
100(1), P. 015980 - 015980
Published: Dec. 11, 2024
Abstract
This
study
introduces
an
eco-friendly
and
simple
approach
for
synthesizing
zinc
oxide
(ZnO),
copper
(CuO),
ZnO-CuO
composite
nanoparticles
using
orange
peel
extract,
minimizing
the
use
of
harmful
chemicals
while
enhancing
their
antibacterial
photocatalytic
properties.
The
were
annealed
at
400
°C
2
h
in
air.
Characterization
was
conducted
x-ray
Diffraction
(XRD),
Dynamic
Light
Scattering,
Fourier
Transform
Infrared
Spectroscopy
(FTIR),
UV-visible
Spectroscopy.
XRD
revealed
that
ZnO
CuO
crystallized
hexagonal
wurtzite
monoclinic
structures,
respectively,
with
crystallite
size
lattice
strain
analyzed
through
Williamson–Hall,
Size-Strain
Plot,
Halder-Wagner,
Wagner-Aqua
methods.
FTIR
spectra
confirmed
presence
Zn-O
bonds,
verifying
successful
synthesis.
optical
bandgaps
measured
3.07
eV
ZnO,
2.702
CuO,
1.842
nanocomposite.
Antimicrobial
efficacy,
assessed
via
disc
diffusion
method,
showed
exhibited
enhanced
activity
against
both
gram-positive
gram-negative
strains
compared
to
individual
CuO.
Photocatalytic
experiments
demonstrated
under
sunlight,
nanocomposite
achieved
78%
degradation
10
ppm
methylene
blue
within
90
min,
outperforming
(55%)
(38%).
These
results
highlight
composite’s
potential
effective
dye
environmental
remediation
applications.
Plant Physiology and Biochemistry,
Journal Year:
2024,
Volume and Issue:
216, P. 109090 - 109090
Published: Sept. 3, 2024
Environmental
remediation
of
heavy
metals
(HMs)
is
a
crucial
aspect
sustainable
development,
safeguarding
natural
resources,
biodiversity,
and
the
delicate
balance
ecosystems,
all
which
are
critical
for
sustaining
life
on
our
planet.
The
bioremediation
HMs
by
unicellular
phototrophs
harnesses
their
intrinsic
detoxification
mechanisms,
including
biosorption,
bioaccumulation,
biotransformation.
These
processes
can
be
remarkably
effective
in
mitigating
HMs,
particularly
at
lower
contaminant
concentrations,
surpassing
efficacy
conventional
physicochemical
methods
offering
greater
sustainability
cost-effectiveness.
Here,
we
explore
potential
various
engineered
nanomaterials
to
further
enhance
capacity
efficiency
HM
based
photosynthetic
microorganisms.
assessment
interactions
between
emphasised
ability
tailored
sustain
metabolism
defence
system
microorganisms,
thereby
enhancing
growth,
biomass
accumulation,
overall
capacity.
Key
factors
that
could
shape
future
research
efforts
toward
nanobioremediation
discussed,
knowledge
gaps
field
have
been
identified.
This
study
sheds
light
as
an
efficient,
scalable,
cost-effective
solution
removal.
