Wasit Journal of Pure sciences,
Год журнала:
2023,
Номер
2(3), С. 311 - 325
Опубликована: Сен. 30, 2023
Magnetic
iron
oxide
nanoparticles
(Fe3O4NPs)
were
prepared
using
the
co-precipitation
technique
successfully.
The
used
to
modify
chitosan
(CHT)
use
produced
nanocomposite
(CHT/
Fe3O4NPs)
as
an
adsorbent
surface
for
removing
methyl
green
dye
from
its
aqueous
solution
.Infrared
spectroscopy
(FT-IR),
scanning
electron
microscopy
(SEM),
X-ray
dispersion
(EDS),
diffraction
(XRD)
and
thermal
gravimetric
analysis
(TGA)
characterize
Fe3O4NPs).
system
of
adsorption
was
described
by
Langmuir,
Freundlich
Temken
models.
adsorbed
capacity
increases
with
increasing
temperature
which
indicates
endothermic
nature
adsorption.
physica status solidi (a),
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 8, 2024
A
highly
efficient,
solid,
and
easily
maneuverable
adsorbent
photocatalyst,
Li‐incorporated
titanate
nanotubes
that
manifest
adsorption
efficiency
of
98.1%
photocatalytic
99.6%
in
60
min
97.8%
98.5%,
respectively,
a
shorter
duration
20
min,
is
synthesized
by
facile
two‐stage
electrochemical
technique.
The
modified
exhibit
good
cyclic
stability
93.7%
photodegradation
malachite
green
dye
after
three
continuous
cycles.
data
show
the
highest
correlation
for
second‐order
pseudo
kinetics
Freundlich
isotherm,
suggesting
multilayer
chemisorption
with
an
capacity
k
F
≈
219.51
mg
1–1/
n
L
1/
g
−1
.
Fourier
transform
infrared
spectroscopy
(FTIR)
analysis
before
corroborates
findings.
X‐Ray
photoelectron
reveals
formation
larger
number
oxygen
vacancies
(Ti
3+
/Ti
2+
)
facilitate
more
carrier
release
production
reactive
species
during
photocatalysis.
diffraction
transmission
electron
microscopy
confirm
secondary
rutile
phase
on
Li
doping
promotes
heterogeneous
adsorption.
Field‐emission
spectroscopic
studies
reveal
change
morphology
doped
tubes
porous
aggregate
surface.
structural,
morphological,
compositional
brought
about
incorporation
facilitates
use
titania
as
efficient
cum
photocatalyst
removal
dye.
Processes,
Год журнала:
2023,
Номер
11(9), С. 2604 - 2604
Опубликована: Авг. 31, 2023
Increased
usage
of
nano-zinc
oxide
(nZnO)
in
different
commercial
fields
has
raised
serious
concerns
regarding
their
discharge
into
the
water
streams
containing
natural
and
synthetic
coating
agents.
Moreover,
utilization
ground
surface
for
drinking
purposes
is
a
common
approach
many
countries.
Therefore,
removal
nZnO
particles
from
essential
to
minimize
risk
environment.
The
present
research
investigated
complex
matrices
by
conventional
coagulation-flocculation-sedimentation
(C/F/S)
process
using
polyaluminum
chloride
(PACl)
as
coagulants.
result
showed
that
uncoated
through
sedimentation
was
efficient
waters
divalent
cations
absence
dissolved
organic
matter
(DOM).
For
higher
salt
concentration,
PACl
coagulant
better
performance
with
increasing
dosage;
however,
agent
DOM
significantly
decreased
up
75%.
potential
studied
indicated
addition
affects
charge
resulting
neutralization.
particle
size
analyzer
revealed
presence
smaller
430
nm
even
after
C/F/S
process,
which
may
increase
possibility
release
aquatic
results
study
help
understating
behavior
other
coated
nanoparticles
during
treatment.
Wasit Journal of Pure sciences,
Год журнала:
2023,
Номер
2(3), С. 311 - 325
Опубликована: Сен. 30, 2023
Magnetic
iron
oxide
nanoparticles
(Fe3O4NPs)
were
prepared
using
the
co-precipitation
technique
successfully.
The
used
to
modify
chitosan
(CHT)
use
produced
nanocomposite
(CHT/
Fe3O4NPs)
as
an
adsorbent
surface
for
removing
methyl
green
dye
from
its
aqueous
solution
.Infrared
spectroscopy
(FT-IR),
scanning
electron
microscopy
(SEM),
X-ray
dispersion
(EDS),
diffraction
(XRD)
and
thermal
gravimetric
analysis
(TGA)
characterize
Fe3O4NPs).
system
of
adsorption
was
described
by
Langmuir,
Freundlich
Temken
models.
adsorbed
capacity
increases
with
increasing
temperature
which
indicates
endothermic
nature
adsorption.
