Catalysts,
Journal Year:
2024,
Volume and Issue:
14(12), P. 934 - 934
Published: Dec. 18, 2024
In
pursuit
of
overcoming
Fenton
oxidation
limitations
in
wastewater
treatment,
an
introduction
a
heterogeneous
photocatalyst
was
developed.
this
regard,
the
current
work
introduces
ZnO
nanocrystals
that
were
successfully
prepared
via
thermal
decomposition
technique
and
then
capped
with
oleic
acid
(OA).
The
synthesized
ZnO-OA
pristine
characterized
by
X-ray
diffraction
(XRD),
Fourier
transform
infrared
spectroscopy
(FTIR),
field
emission
scanning
electron
microscopy
(FE-SEM).
Then,
study
application
such
materials
advanced
processes,
i.e.,
reaction
to
treat
dye-containing
wastewater.
Synthetic
using
Reactive
Blue
4
(RB4)
used
as
simulated
textile
effluent.
Fenton’s
applied,
system
parameters
assessed
modified
system.
samples
recognized
wurtzite
hexagonal
structure.
surface
modification
(OA)
resulted
increase
crystallite
size,
lattice
parameters,
cell
volume.
These
modifications
linked
efficient
capping
nanoparticles
OA,
which
further
improved
dispersion
nanoparticles,
demonstrated
through
SEM
imaging.
optimum
conditions
ZnO-
ZnO-OA-synthesized
composites
showed
400
mg/L
40
for
H2O2
catalyst,
respectively,
at
pH
3.0,
within
90
min
under
UV
irradiation
maximal
dye
reached
93%.
catalytic
performance
its
optimal
circumstances
accordance
pseudo-second-order
kinetics
model
both
ZnO-OA-
ZnO-based
systems.
thermodynamic
including
enthalpy
(ΔH′),
entropy
(ΔS′),
Gibbs
free
energy
(ΔG′)
activations,
also
checked,
their
values
settled
systems
are
non-spontaneous
nature.
Furthermore,
signified
processing
low
barrier
condition
(10.38
31.38
kJ/mol
reactions,
respectively).
Hittite Journal of Science & Engineering,
Journal Year:
2025,
Volume and Issue:
12(1), P. 15 - 23
Published: March 25, 2025
The
thermal
performance
of
lithium-ion
battery
under
passive
cooling
(organic
PCM)
is
investigated
experimentally.
Coconut
oil,
soy
wax
and
palm
are
used
as
organic
PCM.
This
study
investigates
the
temperatures
at
anode,
cathode
midpoint
in
natural
convection
effects
method
on
three
different
PCMs
located
around
Li-ion
during
discharges
(1C,
2C
3C).
results
with
PCM
also
compared
cases
without
determined.
According
to
experimental
results,
it
determined
that
highest
discharge
rate,
coconut
oil
completely
melted,
mushy
phase
region
does
not
change
phase.
Depending
rates,
case
PCM,
while
maximum
surface
range
from
30.7
°C
48.8
°C,
these
25.5
42.6
for
24.8
41.8
wax,
25
40.5
wax.
Battery
better
In
addition,
when
temperature,
identified
there
very
little
difference.
These
findings
indicate
can
reduce
operating
temperature
use
make
positive
contributions
performance.
ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(48)
Published: Dec. 1, 2024
Abstract
PW–EG
composite
phase
change
materials
(CPCMs)
with
varying
expanded
graphite
(EG)
mass
fractions
were
prepared
by
vacuum
adsorption,
using
EG
as
the
matrix
and
paraffin
wax
(PW)
material
(PCM).
The
optimal
addition
amount
of
was
determined
to
be
20
wt%
based
on
enthalpy
leakage
performance
CPCMs.
At
this
composition,
thermal
conductivity
CPCM
enhanced
significantly
from
0.348
6.003
W/(m·K).
SEM
analysis
revealed
effective
adsorption
PW
within
pores
EG,
reducing
rate
below
2.0%.
DSC
results
showed
that
melting
temperature
solidification
36.3
°C
40.80
°C,
respectively,
corresponding
latent
heat
113.2
J/g
106.6
J/g,
respectively.
FT‐IR
XRD
confirmed
interactions
primarily
due
capillary
action,
demonstrating
excellent
chemical
compatibility.
TG
test
may
improve
resistance
PW,
increasing
limit
110
142
°C.
After
200
cycles,
exhibited
satisfactory
properties,
structural
integrity,
stability,
which
will
provide
a
great
potential
PCM
for
energy
storage
applications.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(12), P. 934 - 934
Published: Dec. 18, 2024
In
pursuit
of
overcoming
Fenton
oxidation
limitations
in
wastewater
treatment,
an
introduction
a
heterogeneous
photocatalyst
was
developed.
this
regard,
the
current
work
introduces
ZnO
nanocrystals
that
were
successfully
prepared
via
thermal
decomposition
technique
and
then
capped
with
oleic
acid
(OA).
The
synthesized
ZnO-OA
pristine
characterized
by
X-ray
diffraction
(XRD),
Fourier
transform
infrared
spectroscopy
(FTIR),
field
emission
scanning
electron
microscopy
(FE-SEM).
Then,
study
application
such
materials
advanced
processes,
i.e.,
reaction
to
treat
dye-containing
wastewater.
Synthetic
using
Reactive
Blue
4
(RB4)
used
as
simulated
textile
effluent.
Fenton’s
applied,
system
parameters
assessed
modified
system.
samples
recognized
wurtzite
hexagonal
structure.
surface
modification
(OA)
resulted
increase
crystallite
size,
lattice
parameters,
cell
volume.
These
modifications
linked
efficient
capping
nanoparticles
OA,
which
further
improved
dispersion
nanoparticles,
demonstrated
through
SEM
imaging.
optimum
conditions
ZnO-
ZnO-OA-synthesized
composites
showed
400
mg/L
40
for
H2O2
catalyst,
respectively,
at
pH
3.0,
within
90
min
under
UV
irradiation
maximal
dye
reached
93%.
catalytic
performance
its
optimal
circumstances
accordance
pseudo-second-order
kinetics
model
both
ZnO-OA-
ZnO-based
systems.
thermodynamic
including
enthalpy
(ΔH′),
entropy
(ΔS′),
Gibbs
free
energy
(ΔG′)
activations,
also
checked,
their
values
settled
systems
are
non-spontaneous
nature.
Furthermore,
signified
processing
low
barrier
condition
(10.38
31.38
kJ/mol
reactions,
respectively).
