Toxicology International,
Journal Year:
2023,
Volume and Issue:
unknown, P. 639 - 650
Published: Dec. 11, 2023
industrial
applications
led
to
an
alarming
rise
in
their
presence,
heightening
the
potential
for
contamination
various
environmental
mediums.
In
order
mitigate
adverse
impacts
of
these
heavy
metals,
it
is
imperative
reduce
concentrations
samples.
Therefore,
this
study
aimed
produce
zinc
nanoparticles
employing
Diospyros
chloroxylon
(Roxb.)
effectively
eliminate
carcinogenic
metals
from
water.
The
produced
were
subjected
comprehensive
characterization
using
FT-IR,
XRD,
SEM,
and
EDX
techniques.
XRD
data
indicated
emergence
a
hexagonal
wurtzite
structure.
SEM
images
illustrated
spherical
morphology
synthesized
particles,
with
average
diameter
measuring
53
nm
having
elemental
accounting
69.4%
composition.
subsequent
metal
sorption
experiments
encompassed
range
variables,
remarkably,
displayed
exceptional
adsorption
capabilities,
achieving
maximum
removal
rates
95.81%,
90.13%,
91.25%
within
equilibrium
time
90
minutes
Cr,
Pb,
Cd,
respectively.
process
adhered
pseudo-first-order
reaction
kinetics
model,
high
correlation
coefficients
0.9561,
0.99058,
0.98481,
along
respective
rate
constants
(K)
0.483,
0.233,
0.328
Cd.
outcomes
highlight
that
exhibit
biocompatibility,
stability,
reusability,
making
them
promising
tool
removing
polluted
water
sources.
Materials,
Journal Year:
2024,
Volume and Issue:
17(13), P. 3053 - 3053
Published: June 21, 2024
A
three-dimensional
porous
bacterial
cellulose/graphene
oxide
(BC/GO)
composite
hydrogel
was
synthesized
with
multi-layer
graphene
(GO)
as
the
modifier
and
cellulose
skeleton
via
an
ultrasonic
shaking
process
to
absorb
lead
ions
effectively.
The
characteristics
of
BC/GO
were
investigated
through
TEM,
SEM,
FT-IR,
NMR
Zeta
potential
experiments.
Compared
cellulose,
method
carboxyl
groups
stemming
from
GO
helped
enhance
availability
O(3)H
BC,
in
addition
looser
structure
enriched
oxygen-containing
groups,
leading
a
significantly
higher
adsorption
capacity
for
Pb(II).
In
this
paper,
behavior
is
influenced
by
concentration,
time,
initial
concentration.
highest
Pb(II)
on
found
study
224.5
mg/g.
findings
implied
that
pseudo-second-order
model
explained
dynamics
data
its
isotherm
fit
Freundlich
model.
Because
structure,
complexation
enhanced
O(3)H,
exhibited
much
better
capacity.
Applied Nano,
Journal Year:
2024,
Volume and Issue:
5(3), P. 162 - 189
Published: Sept. 9, 2024
Toxic
metal
wastewater
is
a
challenge
for
exposed
terrestrial
and
aquatic
environments,
as
well
the
recyclability
of
water,
prompting
inputs
development
promising
treatment
methods.
Consequently,
rGO/ZnONP
nanocomposite
was
synthesized
at
room
temperature
four
hours
tested
adsorption
cadmium
lead
in
wastewater.
The
optimized
had
lowest
band
gap
energy
(2.69
eV),
functional
group
interactions
were
516,
1220,
1732,
3009,
3460
cm−1.
showed
good
ZnO
nanoparticle
size
distribution
separation
on
rGO
surfaces.
nanocomposite’s
D
G
intensities
almost
same,
constituting
presence
from
Raman
spectrum.
equilibrium
time
reached
within
10
90
min
with
efficiencies
~100%.
Sips
Freundlich
best
fitted
data
(R2
~
1);
therefore,
multilayer
coverage
mixture
heterogenous
homogenous
adsorption.
Both
adsorptions
by
pseudo-first-order
model,
suggesting
dominance.
adsorbent
reused
three
seven
times
lead.
selectivity
towards
(95%)
(100%)
interfering
matrix.
Conclusively,
may
be
embedded
upcoming
lab-scale
plants,
which
could
to
further
upscaling
it
serving
an
industrial
material.
Journal of The Electrochemical Society,
Journal Year:
2023,
Volume and Issue:
170(12), P. 120530 - 120530
Published: Nov. 14, 2023
MXenes
are
an
emerging
class
of
two-dimensional
transition
metal
carbides
and
nitrides
with
metallic
conductivity
hydrophilic
surfaces.
The
discovery
has
opened
new
possibilities
for
developing
advanced
hybrid
composites
energy
storage
conversion
applications.
This
review
summarizes
recent
advances
in
MXene-based
composites,
including
their
synthesis,
characterization,
electrochemical
performance.
heterostructure
nanocarbons,
oxides,
polymers,
other
nanomaterials
can
overcome
the
limitations
pristine
lead
to
enhanced
lithium/sodium-ion
storage,
pseudocapacitive
performance,
electrocatalytic
activity.
Various
fabrication
techniques
have
been
employed
synthesize
MXene
controlled
nanostructures,
morphology,
interfacial
properties.
Characterization
by
microscopy,
spectroscopy,
methods
shed
light
on
structure-property
relationships
these
materials.
As
electrode
materials,
properly
designed
hybrids
achieved
high
specific
capacity,
excellent
rate
capability,
long-term
stability.
also
discusses
strategies
further
improving
composite
as
well
applications
such
thermoelectrics
photocatalysis.
Continued
research
understand
effects
optimize
heterostructures
holds
promise
next-generation
technologies.
Toxic
metal
wastewater
is
a
challenge
for
exposed
terrestrial,
aquatic
environments
and
the
recyclability
of
water,
prompting
inputs
development
promising
treatment
methods.
Consequently,
rGO/ZnONP
nanocomposite
was
synthesized
at
room
temperature
four
hours
tested
adsorption
cadmium
lead
in
wastewater.
The
optimized
had
lowest
band
gap
energy
(2.69
eV)
functional
group
interactions
were
516,
1220,
1732,
3009,
3460
cm-1.
showed
saturation
ZnO
nanoparticles
on
rGO
with
weight
percentage
zinc
(60.02
%),
oxygen
(22.96
carbon
(16.58
micrograph
slight
agglomeration
sheet
surface.
nanocomposite’s
D
G
intensities
almost
same
constituting
presence
from
raman
spectrum.
equilibrium
time
reached
within
10
90
minutes
efficiencies
~
100
%.
Sips
Freundlich
best
fitting
data
(R2
1),
therefore
multilayer
coverage
mixture
heterogenous
homogenous
adsorption.
Both
adsorptions
fitted
by
pseudo
first
order
model,
suggesting
dominance.
adsorbent
reused
three
seven
times
lead.
selectivity
towards
(95
%)
(100
interfering
matrix.
Conclusively,
may
be
embedded
upcoming
lab-scale
plants
which
could
to
further
upscaling
serving
as
industrial
material.
Water,
Journal Year:
2023,
Volume and Issue:
15(22), P. 3905 - 3905
Published: Nov. 8, 2023
Date
palm
trees
generate
large
amounts
of
various
types
waste,
including
leaf
sheath
fibres,
which
can
be
used
as
a
low-cost
precursor
for
the
production
biochar,
activated
carbon
(AC),
employed
adsorption
contaminants.
In
current
study,
was
produced
from
fibres
date
palms
(LSDPFAC)
by
use
chemical
activation
with
K2CO3
combined
microwave
irradiation,
and
it
characterised
evaluated
its
adsorptive
capacity
lead
ions
(Pb2+).
The
Brunauer–Emmett–Teller
(BET)
surface
area,
Langmuir
total
pore
volume
average
diameter
LSDPFAC
were
560.20
m2/g,
744.31
0.29
cm3/g
2.47
nm,
respectively.
A
greater
Pb2+
observed
when
concentration
higher
in
solution,
greatest
5.67
mg
Pb/g
at
highest
pH.
results
isotherm
kinetic
studies
demonstrated
that
onto
best
described
Freundlich
pseudo-second-order
(PSO)
models.
ΔG°
Ea
6.39
kJ/mol,
0.12
kJ/mol
K,
−31.28
15.90
respectively,
endothermic,
spontaneous
governed
physisorption.
