Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(6), P. 522 - 522
Published: March 14, 2024
Carbon
nanomaterials
are
promising
adsorbents
for
dye
removal
from
wastewater
also
due
to
their
possible
surface
functionalization
that,
in
principle,
can
increase
the
adsorption
rate
and
provide
regeneration.
To
investigate
real
advantages
of
functionalization,
we
synthesized
characterized
through
IR,
TGA,
TEM,
XPS
DLS
measurements
a
multi-walled
carbon
nanotube
(MWCNT)
derivative
bearing
benzenesulfonate
groups
(MWCNT-S).
The
obtained
material
demonstrated
have
good
dispersibility
water
better
capability
adsorb
methylene
blue
(MB)
compared
pristine
MWCNT
adsorbent.
Adsorption
kinetic
studies
showed
very
fast
process,
with
constant
significantly
higher
respect
not
only
that
unfunctionalized
adsorbent
but
those
widely
used
activated
carbons.
Moreover,
capacity
MWCNT-S
is
more
than
doubled
insoluble
adsorbent,
thanks
derivatives,
providing
larger
available
surface,
electrostatic
interactions
between
cationic
MB
anionic
sulfonate
groups.
Additionally,
reversibility
ionic
disclosed
possibility
release
adsorbed
pollutant
competition
salts,
regenerating
recovering
dye.
Indeed,
by
treating
1
h
M
NaCl,
regeneration
75%
was
obtained,
demonstrating
validity
this
strategy.
APL Materials,
Journal Year:
2024,
Volume and Issue:
12(4)
Published: April 1, 2024
The
current
study
reports
on
the
facile
two-step
hydrothermal
synthesis
of
heterojunction
m-ZnWO4/m-WO3
composite
powders
for
visible
light
sensitive
photocatalytic
applications.
ZnWO4
particles
start
crystallizing
surface
WO3
powder
in
second
stage
reaction
a
basic
medium.
phases
were
confirmed
using
x-ray
diffraction
analysis.
monoclinic
cubic
shaped
and
rod
morphologies
disclosed
from
field
emission
scanning
electron
microscope
images.
Strong
interfacial
adhesion
between
was
unveiled
high-resolution
transmission
microscopy
study.
optimized
5ZW
exhibits
calculated
bandgap
2.58
eV,
positioning
it
within
wavelength
range
(λ
=
400–700
nm).
Furthermore,
there
is
notable
enhancement
average
lifetime
electron–hole
pair
recombination
rate,
which
extended
to
30.3
ns.
demonstrated
96%
methylene
blue
dye
degradation
efficiency
420
min
under
irradiation
at
pH
12.
Due
optimal
phase
fraction
strong
WO3,
scheme
seemed
be
highly
efficient
composite.
Hence,
believed
that
method
can
proficient
route
prepare
composites
alkali
conditions
with
active
photodegradation
efficiency.
