International Journal of Environmental & Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 21
Опубликована: Ноя. 17, 2024
This
article
describes
a
facile
and
green
one-pot
synthetic
process
of
Cu
nanoparticles
loaded
on
bentonite
composite
(5Cu
wt.%/bentonite)
using
the
peel
extract
pomegranate
(Punica
granatum
L.)
as
reductant.
The
5Cu
wt.%/bentonite
was
adopted
heterogeneous
catalyst
for
NaBH4-assisted
reductive
degradation
Methylene
Blue
(MB)
dye.
prepared
demonstrated
high
catalytic
efficiency
in
reducing
MB,
achieving
almost
complete
reduction
within
reaction
duration
short
60
seconds.
Indeed,
act
electron
relays,
facilitating
transfer
from
BH4−
anions
to
MB
dye,
leading
its
conversion
into
colourless
Leuco-Methylene
(LMB).
rate
corresponded
nicely
with
pseudo-first-order
kinetic
model,
corresponding
normalised
constant
(Knor)
value
computed
1.48
min−1
mg−1,
outperforming
numerous
previously
documented
metal-containing
catalysts.
Remarkably,
can
straightforwardly
be
reused,
observed
across
5
successive
cycles.
Furthermore,
used
another
reaction,
involving
toxic
Cr(VI)
environmentally
benign
Cr(III)
adopting
formic
acid
agent
under
ambient
conditions.
not
only
showed
95.5%
30
min
but
also
outstanding
reusability
93%
removal
following
cycles,
demonstrating
versatility.
mechanism
involves
dehydrogenation
surface,
followed
by
hydrogen
converting
Cr(III).
Based
straightforward
strategy,
use
cost-effective
readily
available
raw
materials,
excellent
activity,
versatility,
reusability,
seemed
an
ideal
real-world
harmful
aqueous
pollutants
achieve
environmental
sustainability.
Environmental Research,
Год журнала:
2024,
Номер
256, С. 119229 - 119229
Опубликована: Май 24, 2024
There
has
been
significant
attention
on
the
efficient
degradation
of
pollutants
in
wastewater
using
metal-organic
frameworks
(MOFs)
photocatalytic
methods
over
past
decade.
Herein,
we
examined
elimination
two
different
types
water-contaminating
dyes,
specifically
cationic
dye
methylene
blue
(MB)
and
anionic
methyl
orange
(MO),
through
application
bimetal
Cu/Ni-BTC@SiO
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 102261 - 102261
Опубликована: Май 12, 2024
Water
treatment
technology
is
advancing
to
extend
the
supply
of
pure
drinking
water
low-income
societies.
The
application
biomass-based
silver
nanoparticles
for
purification
among
outstanding
innovations
in
this
respect.
Silver
has
less
reactivity
and
excellent
stability,
which
makes
it
preferable
biological
applications
such
as
water.
In
research
review,
synthesis
(AgNPs)
using
different
techniques
chemical
synthesis,
physical
photochemical
was
discussed.
AgNPs
supported
by
biomass-driven
silica
gel
its
were
found
be
promising
technologies.
use
biobased
aerogel
disinfection
recently
been
subject
findings
an
effective
method
killing
microorganisms
from
characteristics
bio-silica
are
unequalled,
large
part
because
increased
porosity,
greater
surface
area,
extraordinarily
inadequate
thermal
conductivity
density,
potent
antibacterial
action
against
both
Escherichia
coli
(E.
coli)
Staphylococcus
aureas
(S.
aureus)
at
low
concentrations.
These
features
exhibited
that
bio-based
aerogel-coated
a
interest
also
have
anti-fouling
properties
prevent
clogging
membrane
filters,
enhances
their
potential
improving
quality
safety.
ACS Omega,
Год журнала:
2024,
Номер
9(17), С. 19461 - 19480
Опубликована: Апрель 18, 2024
Nile
blue
(NB)
dye
is
a
highly
toxic
substance
that
when
discharged
into
sewage
presents
significant
risk
to
the
environment
and
human
health.
Carbon-based
nanomaterials,
such
as
graphene
oxide
(GO),
reduced
(rGO),
their
nanocomposites,
offer
considerable
potential
for
eliminating
hazardous
pollutants
from
aqueous
systems.
In
this
study,
we
have
successfully
fabricated
bare
GO
rGO,
then,
rGO
was
decorated
with
silver
(Ag)
nanoparticles
develop
Ag-rGO
composite.
The
as-prepared
materials
were
characterized
by
various
techniques,
UV–visible
(UV–vis)
Fourier
transform
infrared
(FTIR)
spectroscopies,
X-ray
diffraction
(XRD),
energy-dispersive
(EDX),
scanning
electron
microscopy
(SEM)
elucidate
structure,
morphology,
chemical
composition.
pollutant
removal
performance
of
evaluated
through
batch
approach
under
effect
experimental
variables
NB
wastewater.
As
obvious,
composite
revealed
exceptional
wastewater,
maximum
percentage
94%
within
60
min,
which
remarkably
higher
than
those
(i.e.,
59%)
22%),
same
conditions.
adsorption
data
analyzed
thermodynamics,
isotherms,
kinetics
models
better
understand
physicochemical
mechanisms
driving
effective
dye.
results
reveal
nanocomposite
exhibit
excellent
ability
well
favorable
thermodynamic
kinetic
parameters
removal.
It
also
found
presence
light
enhanced
adsorptive
while
using
an
adsorbent.
present
study
noted
reusability
nanocomposite,
likely
due
minimal
Ag
leaching
and/or
robust
stability
Ag-rGO.
suggested
Ag-rGO-based
hybrid
could
serve
promising
candidates
efficiently
adsorbing
catalytically
removing
Results in Engineering,
Год журнала:
2023,
Номер
20, С. 101578 - 101578
Опубликована: Ноя. 10, 2023
Herein,
the
LiMn2O4
(LMO)
cathode
was
modified
using
ultrasonic-assisted
electrochemically
synthesized
graphene
to
enhance
lithium-ion
batteries'
charging
and
discharging
performance.
Graphene
from
graphite
an
electrochemical
exfoliation
process
in
which
0.1
M
molar
(NH4)2SO4
utilized
as
electrolyte
with
+10
+12V
DC
power,
followed
by
ultrasonication
acetone
for
2
h.
The
FESEM,
EDX,
XRD,
Raman,
FTIR,
UV–vis,
TGA
results
suggested
that
ultrasonically
treated
(EG1)
is
superior
exfoliated
(EG2).
Thus,
EG1
used
modify
LMO
fabricate
batteries.
Afterward,
performances
of
LMO/EG1
batteries
were
investigated.
Surface
morphological
analysis
revealed
composed
two-dimensional,
planar,
brighter,
less
oxidized
nanosheets
average
particle
size
18.02
nm.
XRD
exhibited
has
a
smaller
crystalline
thinner
stacking
thickness
its
layered
structure
than
EG2.
According
Raman
analysis,
intensity
ratio
I2D/IG
EG2
0.70
0.81,
respectively,
deduced
both
are
multi-layered
structures;
however,
contains
lesser
number
layers
showed
have
89
%
coulombic
efficiency
at
0.1C,
while
only
81
%.
discharge
capacity
retention
rate
71.4
%,
it
94.8
after
observing
100
cycles
C.
Therefore,
excellent
cycle
stability
performance
could
potentially
hybrid
automotive
electronic
devices.
