Karbala International Journal of Modern Science,
Год журнала:
2023,
Номер
9(3)
Опубликована: Авг. 22, 2023
This
study
investigated
the
treatment
of
textile
wastewater
contaminated
with
Acid
Black
210
dye
(AB210)
using
zinc
oxide
nanoparticles
(ZnO
NPs)
through
adsorption
and
photocatalytic
techniques.
ZnO
NPs
were
synthesized
a
green
synthesis
process
involving
eucalyptus
leaves
as
reducing
capping
agents.
The
characterized
UV-Vis
spectroscopy,
SEM,
EDAX,
XRD,
BET,
Zeta
potential,
FTIR
BET
analysis
revealed
specific
surface
area
total
pore
volume
26.318
m2/g.
SEM
images
confirmed
crystalline
spherical
nature
particles,
particle
size
73.4
nm.
A
photoreactor
was
designed
to
facilitate
photo-degradation
process.
influence
key
variables
on
break-down
AB210.
results
indicated
that
under
optimal
conditions
(AB210
concentration:
5
mg/L,
dosage:
0.75
g/L,
pH:
5,
temperature:
45
°C),
removal
efficiency
after
180
minutes
62%.
However,
in
case
photo-degradation,
complete
mg/L
AB210
achieved
within
30
at
pH
7,
UV
intensity
24
W/m2,
temperature
°C.
exhibited
best
fit
pseudo-second-order
kinetic
model.
Various
isotherms,
including
Freundlich,
Langmuir,
Temkin,
Dubinin
models,
studied,
Langmuir
isotherm
provided
experimental
data
(see
Supplementary
Materials).
Fur-thermore,
thermodynamic
spontaneous,
endothermic,
favorable,
ΔG°,
ΔH°,
ΔS°
values
-0.782
kJ/mol,
26.93
0.086
kJ.mol/K,
respectively.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Июнь 26, 2024
The
development
of
nanomaterials
has
been
speedily
established
in
recent
years,
yet
nanoparticles
synthesized
by
traditional
methods
suffer
unacceptable
toxicity
and
the
sustainability
procedure
for
synthesizing
such
is
inadequate.
Consequently,
green
biosynthesis,
which
employs
biopolymers,
gaining
attraction
as
an
environmentally
sound
alternative
to
less
sustainable
approaches.
Chitosan-encapsulated
exhibit
exceptional
antibacterial
properties,
offering
a
wide
range
uses.
Chitosan,
obtained
from
shrimp
shells,
aided
friendly
synthesis
high-purity
zinc
oxide
(ZnO
NPs)
with
desirable
features
extraction
yield
(41%),
deacetylation
(88%),
crystallinity
index
(74.54%).
particle
size
ZnO
NPs
was
12
nm,
while
that
chitosan-ZnO
21
bandgap
energies
these
were
3.98
3.48,
respectively.
strong
action
demonstrated
NPs,
chitosan-ZnO/PVP,
particularly
against
Gram-positive
bacteria,
making
them
appropriate
therapeutic
use.
photocatalytic
degradation
abilities
also
assessed
all
nanoparticles.
At
concentration
6
×
10
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
32, С. 103300 - 103300
Опубликована: Июль 25, 2023
In
this
research,
copper
oxide
nanoparticles
(CuO-NPs)
were
biosynthesized
through
a
simple,
quick,
and
green
manner
by
the
exertion
of
okra
(Abelmoschus
esculentus)
fruit
extract
as
stabilizer
reducing
agent.
TGA/DTA,
UV–Vis,
DRS,
FTIR,
XRD,
BET,
TEM,
FESEM/EDX,
PSA
analyses
used
to
characterize
CuO-NPs.
The
XRD
analysis
CuO-NPs
exhibited
monoclinic
structure
crystallizes
in
size
about
25
nm.
optical
surface
characteristics
examined
results
DRS
BET
analyses,
while
their
area
was
observed
be
5.6
m2/g.
absorption
spectra
NPs
revealed
peak
at
around
320
addition,
FESEM/TEM/PSA
images
displayed
spherical
shape
20
effectiveness
photocatalyst
testing
ability
degrade
various
dyes
under
UV
light.
According
outcomes
after
210
min,
degradation
percentages
Eriochrome
black
T
(EBT),
Rhodamine
B
(RhB),
Methylene
blue
(MB)
approximately
88,
96,
88%,
respectively.
anticancer
efficacy
against
HeLa
cancer
cell
line
24,
48,
72
h
(IC50=1000,
500,
250
μg/mL,
respectively)
significant,
whereas
lower
cytotoxic
effects
induced
on
normal
fibroblast
L929
when
compared
that
cells.
viability
cells
concentration
1000
μg/mL
decreased
74,
71,
65%
h,
ACS Omega,
Год журнала:
2023,
Номер
8(30), С. 27344 - 27354
Опубликована: Июль 24, 2023
In
this
study,
zinc
oxide
nanoparticles
(ZnO
NPs)
were
synthesized
using
an
aqueous
extract
of
the
Ocimum
lamifolium
(O.
lamifolium)
plant.
The
I-optimal
coordinate
exchange
randomized
response
surface
methodology
(RSM)
was
used
to
optimize
effect
acetate
precursor,
temperature,
and
time
on
ZnO
NPs
by
designing
nine
runs.
From
ANOVA
analysis,
significance
validity
designed
model
showed
that
optimal
values
during
synthesis
found
be
∼0.06
M,
∼30
°C,
∼1.35
h,
respectively.
obtained
under
these
optimized
conditions
characterized
explored
UV–vis,
TGA/DTA,
FTIR,
XRD,
SEM-EDX,
TEM,
HRTEM,
SAED.
Furthermore,
electrocatalytic
performance
performed
for
sulfamethoxazole
(SMZ)
sensing
activity
with
a
0.3528
μM
(S/N
=
3)
limit
detection
(LOD).
addition,
antibacterial
study
revealed
confirmed
excellent
zone
inhibition
against
E.
coli,
S.
aureus,
P.
aeruginosa,
pyogen
pathogenic
drug
resistance
bacterial
strains
at
concentrations
50,
75,
100
μg/mL.
Thus,
O.
leaf
have
potential
diverse
organic
pollutant
as
well
desirable
material
such
antimicrobial
strains.
Heliyon,
Год журнала:
2024,
Номер
10(9), С. e30374 - e30374
Опубликована: Апрель 25, 2024
Highlights•An
eco-friendly
and
cost-effective
procedure
for
the
synthesis
of
Silver-doped
Zinc
Oxide/Magnesium
Oxide
Nanocomposite.•Silver-doped
Nanocomposite
as
an
excellent
photocatalyst
degradation
organic
dyes.•Low
cell
bio-toxicity
Nanocomposite.•Application
Mentha
pulgium
extract
biosynthesis
Nanocomposite.AbstractThis
research
attempted
to
prepare
silver-doped
zinc
oxide/magnesium
oxide
nanocomposite
(Ag-doped
ZnO/MgO-NCP)
using
pulegium
plant
extract.
The
synthesized
NCP
was
investigated
by
X-ray
diffraction
analysis
(XRD),
Fourier
Transform
Infrared
(FT-IR),
Field
Emission
Scanning
Electron
Microscope
(FESEM),
Energy
dispersive
spectroscopy
(EDX),
Mapping,
UV–Visible
analyses.
XRD
data
displayed
cubic
crystal
structures
silver
&
magnesium
a
hexagonal
framework
oxide.
Also,
FESEM
PSA
images
pointed
out,
that
average
size
spherical
morphology
is
about
10–16
nm,
while
EDX
confirmed
attendance
Zn,
Mg,
Ag,
O
elements.
Under
UVA
light,
we
tested
photocatalytic
activity
Methylene
blue
(MB)
Rhodamine
B
(RhB)
dyes
in
various
temperatures
(400,
500,
600
°C).
results
test
percentage
MB
dye
pH
=
9,
amount
∼30
mg,
concentration
∼1
×
10
−5
M
98
%.
We
also
evaluated
cytotoxicity
on
cancer
CT-26
line
through
MTT
method
obtained
IC50
value
250
μg/mL.Graphical
abstract
