Karbala International Journal of Modern Science,
Journal Year:
2023,
Volume and Issue:
9(3)
Published: Aug. 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.
ACS Omega,
Journal Year:
2023,
Volume and Issue:
8(46), P. 43999 - 44012
Published: Nov. 10, 2023
In
this
work,
TiO2
nanoparticles
(NPs)
were
effectively
synthesized
by
a
green
method
using
the
Impatiens
rothii
Hook.f.
leaf
(IL)
extract
as
capping
and
reducing
agent.
The
as-synthesized
NPs
characterized
different
characterization
methods
such
Brunauer–Emmett–Teller
(BET)
analysis,
high-resolution
transmission
electron
microscopy
(HRTEM),
scanning
(SEM),
energy
dispersive
X-ray
spectroscopy
(EDX),
Fourier
transform
infrared
(FTIR),
photoelectron
(XPS),
diffused
reflectance
(DRS),
diffraction
(XRD)
Raman
spectroscopy.
specific
surface
area
from
BET
analysis
was
found
to
be
65
m2/g.
average
crystallite
size
XRD
particle
SEM
∼11
∼25
nm,
respectively.
results
showed
that
biosynthesized
(IL–TiO2)
purely
anatase
phase.
XPS
illustrated
formation
of
Titania
with
an
oxidation
state
+4.
DRS
study
showcased
blue-shifted
intense
absorption
peak
IL–TiO2
(3.39
eV)
compared
bulk
material
reported
in
literature
(3.2
eV).
HRTEM
micrograph
presence
grain
boundary
d
spacings
0.352,
0.245,
0.190,
which
correspond
lattice
planes
(101),
(004),
(200),
From
EDX
weight
percents
titanium
oxygen
54.33
45.67%,
photoinduced
degradation
methylene
blue
(MB)
dye
investigated
IL-TiO2
photocatalyst.
effect
parameters
like
catalyst
dosage
(30
mg/L),
initial
concentration
MB
(15
ppm),
pH
(10.5),
contact
time
(100
min)
on
removal
efficiency
optimized.
maximum
photodegradation
under
optimized
conditions
98%.
Microscopy Research and Technique,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 24, 2025
Organic
dyes
pose
significant
environmental
and
health
concerns,
including
increased
carcinogenicity
detrimental
effects
on
photosynthesis
due
to
elevated
levels
of
BOD
COD.
Herein,
a
hydrothermal
approach
was
employed
synthesize
CuS@ZnO
nanocomposites.
Structural
properties
the
prepared
nanocomposites
were
confirmed
evaluated
by
using
XRD
FTIR
techniques.
Morphological
characteristics
particle
size
(showing
an
average
around
40
nm)
FESEM.
To
assess
their
effectiveness,
nanomaterials
investigated
against
photodegradation
rhodamine
B
(RhB).
The
CuS@ZnO-b
composite,
with
1:1
M
ratio,
achieved
impressive
94.31%
efficiency
10
ppm
RhB
quantum
yield
1.97
×
10-5
molecules
photon-1
(within
120
min
at
pH
4.0,
50-W
light
intensity
40°C).
ability
photocatalyst
absorb
visible
effectively
generate
free
radicals
significantly
enhanced
photon
energy
activation.
antimicrobial
effectiveness
nanocomposite
tested
two
bacterial
strains,
Lactobacillus
Escherichia
coli,
agar
disk
diffusion
technique.
showed
excellent
activity,
producing
inhibition
zones
18
mm
for
19
demonstrating
strong
potential
combat
these
bacteria.
These
findings
underscore
advancements
in
photocatalytic
systems
water
purification
applications.
Karbala International Journal of Modern Science,
Journal Year:
2023,
Volume and Issue:
9(3)
Published: Aug. 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.
