Nanocomposites,
Год журнала:
2023,
Номер
9(1), С. 183 - 202
Опубликована: Дек. 18, 2023
In
this
investigation,
we
employed
chemical
oxidative
copolymerization
techniques
to
produce
cross-linked
polyaniline/chitosan-graphene
oxide-oxidized
single-wall
carbon
nanotubes
(Cross
PANI/Chito-GO-OXS
NCs)
as
a
network
increase
the
surface
area,
well
active
centers
enhance
efficiency
of
adsorption
anionic
and
cationic
dyes.
This
novel
material
was
utilized
an
adsorbent
for
decontaminating
water
by
eliminating
acid
red
dye
(AR1)
brilliant
green
(BG).
Several
analytical
were
assess
composition
structure
synthesized
adsorbent,
including
scanning
electron
microscopy
(SEM),
high-resolution
transmission
(HR-TEM),
X-ray
powder
diffraction
(XRD),
infrared
spectroscopy
(FT-IR),
thermogravimetric
analysis
(TGA),
Raman
spectroscopy.
To
efficacy
Cross
NCs
in
removal,
batch
experiments
carried
out
under
diverse
conditions,
such
varying
pH,
quantity,
agitation
duration,
ionic
strength,
temperature.
The
results
indicated
that
optimum
conditions
AR1
removal
achieved
at
pH
2,
using
5
mg
concentration
20
mg/L
120
min.
Conversely,
BG
most
favorable
outcomes
observed
6,
with
use
Under
these
operating
maximum
actual
wastewater
determined
be
96.73%
95.55%
dye.
Additionally,
analyzed
isotherm
data
utilizing
various
models.
kinetics
elucidated
through
pseudo-second-order
model,
supported
regression
data,
which
yielded
R2
values
0.9839
0.9928
BG,
respectively,
describing
both
dyes
onto
NCs.
Furthermore,
thermodynamic
revealed
is
endothermic
process,
while
exothermic,
are
spontaneous
chemisorption
processes.
Arabian Journal of Chemistry,
Год журнала:
2023,
Номер
16(5), С. 104652 - 104652
Опубликована: Фев. 8, 2023
The
presented
research
applied
the
modified
Halloysite
nanoclay
to
boost
adsorption
efficacy
of
heavy
metals
from
water.
To
improve
As
(III)
effectiveness
water,
study
assessed
characteristics
prepared
materials
and
improved
experimental
conditions.
was
optimized
condition
with
a
dosage
1g/L,
contact
time
90
minutes,
solution
pH
8,
initial
concentration
5
ppm
(III).
optimization
performed
in
distilled
water
later
experiments
were
conducted
real
polluted
nanoclay's
physical
investigated
using
techniques
like
X-ray
diffraction,
scanning
transmission
electron
microscopy,
Fourier
transform
infrared
spectroscopy,
surface
area
analysis.
result
shows
efficiency
82.4%
at
during
usage
nanoclay.
create
suitable
mathematical
model
for
better
description
interactions
between
pollutants
solid
adsorbents,
it
is
helpful
analyze
process
kinetically.
removal
studied
kinetically
observation
pseudo-second
order
kinetics.
Journal of Saudi Chemical Society,
Год журнала:
2024,
Номер
28(3), С. 101828 - 101828
Опубликована: Март 3, 2024
The
conversion
of
organic
waste
into
valuable
commodities
is
essential
for
safeguarding
the
environment
and
promoting
sustainable
development
economy.
This
investigation
centres
on
production
Zinc
ferrite
nanoparticles
(ZnF
NPs),
modified
eggshells
(MES)
impregnated
with
chitosan
(CS)
coated
poly
ortho-toluidine
P(OT)
nanocomposites
(NCs).
synthesis
involves
a
quaternary
composition
denoted
as
P(OT)/MES/CS/ZnF
NCs,
achieved
through
chemical
polymerization
techniques.
resulting
NCs
were
characterized
applied
removal
Brilliant
Green
(B.GR)
Acid
Red
(A.RE).
Four
distinct
compositions,
namely
pure
P(OT),
binary
P(OT)/MES,
ternary
P(OT)/MES/CS,
synthesized.
outcomes
revealed
that
exhibited
highest
adsorption
capacities
B.GR
A.RE
at)27.03
142.8
mg-1(,
respectively.
findings
most
favorable
parameters
attained
at
pH
2,
using
15
mg
concentration
25
mg/L
duration
120
min.
On
other
hand,
when
it
comes
to
removing
B.GR,
best
results
shown
while
5
min,
specifically
6.
greatest
real
wastewater
efficiencies
dye
dye,
respectively,
found
be
99.5%
97.6%
under
these
operating
circumstances.
These
optimal
demonstrated
ability
regenerated
four
times
without
significantly
compromising
their
properties
remarkable
capacity
remove
96-98%
dyes
from
polluted
water.
Through
use
regression
data
pseudo-second-order
model,
kinetics
explained,
R2
values
0.994
0.993
Thermodynamic
by
affirmed
fact
occurs
spontaneous
have
endothermic
nature.
study
underscores
an
effective
approach
applicable
large-scale
new
adsorbents
water
treatment
purposes.
