International Journal of Environmental & Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 28
Published: Dec. 11, 2024
This
research
paper
includes
a
novel
hydrogel
as
an
adsorbent
prepared
via
free
radical
polymerisation
of
sodium
alginate-grafting-poly
(N-isopropylacrylamide-co-hydroxy
ethyl
acrylamide-co-2-Acrylamido-2-methylpropane
sulphonic
acid)
(HGs).
Employing
the
Taguchi
method,
optimal
concentrations
monomers,
alginate,
initiator,
and
crosslinking
agent
were
determined
to
achieve
maximum
swelling
ratio
for
incorporation
Fe2+
Fe3+
ions
produce
Fe3O4/HGS
magnetic
nanocomposites
(MGHs)
shown
in
Scheme
1.
HGS
MGHs
characterised
using
various
techniques,
including
infrared
absorption
spectrum
(FTIR),
field
emission
scanning
electron
microscope
(FESEM),
atomic
force
(AFM),
transmission
(TEM),
X-ray
diffraction
(XRD),
thermogravimetric
analysis
(TGA),
Brunauer–Emmett–Teller
(BET),
Vibrating‑Sample
Magnetometer
(VSM).
The
study
compared
behaviours
at
different
pH
values
both
adsorbents.
point
zero
charge
PZC
was
studied
understand
adsorption
behaviour,
which
equal
5.44
adsorbent.
Adsorption
kinetics
exhibited
pseudo-second-order
behaviour
after
determining
adsorbent's
effective
weight,
is
0.002
g,
equilibrium
time,
60
min.
isotherm
showed
good
agreement
with
Langmuir
Dubinin–Radushkevich
models.
Thermodynamic
parameters
calculated
temperatures
(5–35
°C),
indicating
physisorption.
While
removal
percent
Mb
dye
95%
Qe
=
474.7
mg/g,
conditions
Response
Surface
Methodology
(RSM)
analysed
through
Analysis
Variance
(ANOVA).
Results
demonstrated
that
increases
increasing
temperature,
confirming
endothermic
nature
process.
also
investigated
Reusability,
high
efficiency
five
cycles.
Results in Surfaces and Interfaces,
Journal Year:
2024,
Volume and Issue:
15, P. 100225 - 100225
Published: May 1, 2024
Graphene
oxide
(GO),
a
2-dimensional
(2-D)
monolayer
of
graphite,
has
drawn
lot
importance
due
to
its
accessibility
and
material
compatibility.
It
can
be
produced
by
mechanically
stirring
or
sonicating
graphite
exfoliate
it
into
layered
sheets.
Due
high
stability,
2-D
planar
structure,
huge
surface
area,
easy
chemical
adaptation
via
functionalities,
efficient
loading
with
many
biomolecules,
optical,
electrical,
mechanical
capabilities,
GO
derivatives
are
quickly
emerging
as
the
most
intensely
studied
carbon-based
materials
in
number
fields.
In
this
review,
we
provided
thorough
overview
GO,
synthesis
pristine
GO-based
composites
well
their
applications
field
biodiesel
synthesis,
adsorption,
photodegradation,
electrochemical
along
biological
significance
antimicrobial
efficiency.
Owing
distinctive
features,
garnered
interest
realm
catalyst.
The
process
transesterification
using
supported
catalyst
is
highlighted
herein.
Similarly,
adsorption
photodegradation
several
organic
dyes
effluents
also
discussed
article.
Finally,
derived
relation
attractive
trends
highlighting
future
scope
commercial
implications.
Desalination and Water Treatment,
Journal Year:
2024,
Volume and Issue:
320, P. 100585 - 100585
Published: July 9, 2024
Water
contamination
from
dyes
is
a
major
issue
that
needs
to
be
solved
effectively.
Addressing
this
issue,
the
study
aims
improve
adsorption
capacity
of
montmorillonite
(MMT)
by
its
modification
for
removing
methylene
blue
(MB)
dye.
Powder
XRD,
FTIR,
FESEM,
HRTEM,
BET,
and
XPS
were
employed
analyze
modified
materials.
Various
parameters
studied
optimize
efficiency
MMT.
To
enhance
removal
MMT
(70.05
±
0.16
%),
has
with
banana
peel
ash
extract
(BPAE)
which
achieved
maximum
MB
98.54
0.31
%
under
neutral
pH,
an
equilibrium
time
150
min,
initial
dye
concentration
120
mg/L,
adsorbent
dosage
1.4
g/L
at
ambient
temperature
(32
°C).
Among
isotherm
models,
Langmuir
model
showed
100
mg/g.
Experimental
data
fitted
well
Elovich
kinetic
model.
Reusability
was
efficient
up
third
cycle,
retaining
56.96
0.39
efficiency.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(9), P. 575 - 575
Published: Aug. 29, 2024
This
review
critically
examines
the
latest
advancements
in
clay
mineral-based
photocatalysts
for
water
purification.
Clay
minerals,
owing
to
their
natural
abundance,
low
cost,
and
unique
physicochemical
properties,
have
emerged
as
promising
candidates
enhancing
photocatalytic
efficiency.
article
delves
into
various
activation
methods
including
acid,
alkali,
calcination,
mechanochemical
activation,
highlighting
roles
surface
area,
creating
active
sites,
improving
performance.
Moreover,
explores
modification
strategies
photocatalysts,
such
doping
with
metal
non-metal
ions,
deposition
of
metals,
design
heterojunctions,
further
boost
activity.
In
particular,
utilization
kaolinite,
montmorillonite,
attapulgite,
sepiolite
mineral
supports
is
discussed
detail,
showcasing
potential
wastewater
treatment.
The
underscores
significant
strides
made
development
effectiveness
degrading
organic
contaminants
under
light
exposure.
Nevertheless,
there
are
persisting
challenges
optimization
loading
quantities,
improvement
compatibility
between
minerals
reduction
preparation
costs
large-scale
applications.
summary,
this
offers
valuable
insights
current
status
purification,
thereby
stimulating
future
research
field.
Journal of Applied Polymer Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 12, 2025
ABSTRACT
Water
contamination
constitutes
a
substantial
global
issue
that
affects
the
environment.
Adsorption
materials
have
demonstrated
huge
potential
in
wastewater
treatment.
For
efficient
removal
of
cationic
dye,
basic
blue
3
(BB3),
polypyrrole‐coated
cobalt
ferrite
(PPy@CoFe
2
O
4
)
magnetic
nanosorbent
is
prepared
via
situ
polymerization
pyrrole
on
CoFe
nanoparticles.
Scanning
electron
microscopy
(SEM)
analysis
spherical
nanoparticles
with
sizes
around
50
nm,
which
was
further
supported
by
XRD
data.
Zeta‐potential
study
showed
surface
charge
PPy@CoFe
negative
alkaline
media
and
positive
acidic
media.
The
adsorption
system
adhered
to
pseudo‐second‐order
kinetic
model,
equilibrium
time
being
determined
at
min.
Langmuir
model
accurately
simulated
isotherms.
Under
optimal
conditions
(pH—8.0,
volume—30
mL,
adsorbent
dose—0.67
g/L,
303
K
temperature),
maximum
monolayer
capacity
PPy/CoFe
130.1
mg
g
−1
.
Even
after
five
desorption–adsorption
cycles,
efficiency
remained
above
92%.
Negative
Δ
G
°
H
indicate
spontaneous
BB3
onto
,
decreasing
temperature.
These
findings
demonstrate
composite
highly
effective
broad
applications
for
treating
containing
dye.
