Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Aug. 18, 2023
There
has
been
a
lot
of
attention
on
water
pollution
by
dyes
in
recent
years
because
their
serious
toxicological
implications
human
health
and
the
environment.
Therefore,
current
study
presented
novel
polyethylene
glycol-functionalized
graphene
oxide/chitosan
composite
(PEG-GO/CS)
to
remove
from
aqueous
solutions.
Several
characterization
techniques,
such
as
SEM,
TEM,
FTIR,
TGA/DTG,
XRD,
XPS,
were
employed
correlate
structure-property
relationship
between
adsorption
performance
PEG-GO/CS
composites.
Taguchi's
(L25)
approach
was
used
optimize
batch
process
variables
[pH,
contact
time,
adsorbent
dose,
initial
concentration
methyl
orange
(MO)]
for
maximal
capacity.
pH
=
2,
time
90
min,
dose
10
mg/10
mL,
MO
200
mg/L
found
be
optimal.
The
material
maximum
capacity
271
mg/g
at
room
temperature.
With
greatest
R2
0.8930
values,
Langmuir
isotherm
model
shown
most
appropriate.
Compared
pseudo-first-order
(R2
0.9685),
pseudo-second-order
0.9707)
better
fits
kinetic
data.
Electrostatic
interactions
dominant
mechanism
underlying
sorption
onto
PEG/GO-CS
composite.
as-synthesized
reusable
up
three
cycles.
Thus,
fabricated
through
simple
procedure
may
other
similar
organic
real
contaminated
water.
Journal of Chemistry,
Journal Year:
2023,
Volume and Issue:
2023, P. 1 - 10
Published: April 29, 2023
The
nanostructures
synthesized
using
the
green
chemistry
method
have
recently
attracted
attention
of
scientists
due
to
their
significance
in
many
scientific
domains.
This
work
provides
an
overview
biosynthesis
zinc
oxide
(ZnO)
nanosheets
(NSs)
Phyllanthus
emblica
plant
(PEP)
extract.
X-ray
diffraction
analysis
(XRD),
photoelectron
spectroscopy
(XPS),
scanning
electron
microscopy
(SEM),
and
Fourier
transform
infrared
(FTIR)
were
used
analyze
ZnO-NSs.
Evaluation
antibacterial
activity
biosynthesized
ZnO-NSs
was
performed.
exhibit
effective
against
Gram-positive
(S.
pyogenes
S.
aureus)
Gram-negative
typhi
E.
coli)
bacterial
strains.
is
most
sensitive
microbe
towards
formed
a
21
mm
zone
inhibition
(ZOI).
are
also
tested
as
photocatalyst
degradation
methyl
orange
(MO)
rhodamine
B
(RB).
rate
MO
90%,
RB
96%
after
being
exposed
UV
light
for
120
min.
as-synthesized
exhibited
selective
dye
showed
relatively
better
photocatalytic
positively
charged
(cationic)
dyes.
could
lead
fabrication
high-yield
photocatalysts,
which
potential
degrade
textile
dyes
from
aqueous
solution.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: July 30, 2024
The
development
of
nanomaterials
incorporating
organic
components
holds
significant
importance
in
addressing
the
efficient
removal
metal
ions
through
adsorption.
Hence,
this
study,
a
novel
MnFe2O4/chitosan/Schiff
base
nanocomposite
was
successfully
synthesized
by
crosslinking
MnFe2O4
nanoparticles
with
functionalized
chitosan
using
Schiff
base.
created
condensation
reaction
between
2-aminophenol
and
terephthalaldehyde.
Comprehensive
characterization
performed
FT-IR,
XRD,
SEM,
VSM
analyses,
revealing
less
crystalline
arrangement
compared
to
pure
chitosan,
rough
non-uniform
surface
morphology,
reduced
magnetization
value
30
emu/g.
Furthermore,
working
as
an
adsorbent
for
effective
disposal
Zn(II)
from
aqueous
solutions.
exhibited
maximum
sorption
capacity
289.86
mg/g
ions.
Additionally,
results
indicated
that
spontaneous,
chemical,
endothermic
process,
aligning
well
Langmuir
isotherm
pseudo-second-order
model.
at
pH
7.5,
contact
duration
100
min
temperature
328
K,
fabricated
reached
its
study
demonstrate
effectiveness
newly
removing
media.
synthesis
approach
high
adsorption
underscore
potential
composite
practical
applications
industrial
wastewater
treatment.
dual
mechanism
involving
electrostatic
attraction
complexation
processes
further
enhances
utility,
making
it
valuable
contribution
field
environmental
remediation.
ChemistrySelect,
Journal Year:
2023,
Volume and Issue:
8(5)
Published: Feb. 2, 2023
Abstract
The
preparation
of
Cobalt
ferrite‐Ocimum
sanctum
nanocomposite,
referred
to
as
CoFe
2
O
4
/OS,
has
been
reported
along
with
its
application
for
the
treatment
water
containing
hazardous
organic
contaminants.
A
simple
co‐precipitation
approach
was
applied
synthesis
magnetic
and
a
thorough
analysis
characterization
conducted
using
several
spectroscopic
microscopic
techniques.
results
showed
that
nanocomposite
exhibited
substantial
functional
groups
Ocimum
powder
ferrite
part.
adsorption
investigation
removal
two
cationic
dyes
carried
out
varying
parameters,
such
pH,
contact
time,
temperature,
concentration,
composite
dosage.
sorption
process
proved
feasible
exothermic
at
tested
temperatures
(303–323
K).
data
followed
Freundlich
Temkin
isotherms
which
recommended
physisorption
progression.
kinetic
study
revealed
pseudo‐second
order
rate
both
dye
molecules.
facile
preparation,
economical
cost,
significant
character,
high
capacity
will
surely
construct
system
more
competent
use
/OS.
International Journal of Phytoremediation,
Journal Year:
2023,
Volume and Issue:
25(12), P. 1567 - 1578
Published: Feb. 16, 2023
Herein,
tropical
fruit
biomass
wastes
including
durian
seeds
(DS)
and
rambutan
peels
(RP)
were
used
as
sustainable
precursors
for
preparing
activated
carbon
(DSRPAC)
using
microwave-induced
H3PO4
activation.
The
textural
physicochemical
characteristics
of
DSRPAC
investigated
by
N2
adsorption-desorption
isotherms,
X-ray
diffraction,
Fourier
transform
infrared,
point
zero
charge,
scanning
electron
microscope
analyses.
These
findings
reveal
that
the
has
a
mean
pore
diameter
3.79
nm
specific
surface
area
104.2
m2/g.
was
applied
green
adsorbent
to
extensively
investigate
removal
an
organic
dye
(methylene
blue,
MB)
from
aqueous
solutions.
response
methodology
Box-Behnken
design
(RSM-BBD)
evaluate
vital
adsorption
characteristics,
which
included
(A)
dosage
(0.02-0.12
g/L),
(B)
pH
(4-10),
(C)
time
(10-70
min).
BBD
model
specified
(0.12
(10),
(40
min)
parameters
caused
largest
MB
(82.1%).
isotherm
pursues
Freundlich
model,
whereas
kinetic
data
can
be
well
described
pseudo-first-order
pseudo-second-order
models.
exhibited
good
capability
(118.5
mg/g).
Several
mechanisms
control
DSRPAC,
electrostatic
forces,
π-π
stacking,
H-bonding.
This
work
shows
derived
DS
RP
could
serve
viable
treatment
industrial
effluents
containing
dye.The
novelty
this
research
comes
conversion
mixed
precursor
microwave
assisted
effectiveness
promising
tested
methylene
blue
(MB)
adsorption.
Furthermore,
with
Box
Behnken
optimize
key
parameters.
A
tailored
mechanism
on
proposed.
