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).
Energy Materials,
Journal Year:
2025,
Volume and Issue:
5(4)
Published: Jan. 25, 2025
Phase
change
materials
(PCMs)
represent
an
innovative
solution
to
passively
manage
device
temperature
or
store
heat,
taking
advantage
of
the
material
phase
transitions.
In
this
work,
attitude
high
density
polyethylene
(HDPE)
for
shape
stabilization
three
selected
organic
PCMs
with
a
melting
close
55
°C
was
investigated.
Composites
PCM
content
in
range
50-61
wt.%
were
produced
by
melt
compounding,
and
lab-scale
panels
compression
molding.
The
ability
supporting
olefinic
matrix
stabilize
contain
leakage
verified
compared
through
thermo-mechanical
characterization.
Moreover,
expanded
graphite
introduced
according
novel
under-vacuum
impregnation
process
order
provide
extra
stabilizing
contribution,
resulting
outstanding
thermal
conductivity
increase
up
1.6
W/m·K,
maximized
enthalpy
112
J/g.
Besides
stability,
HDPE
also
improves
mechanical
properties
PCM-based
composites,
as
documented
detailed
extended
characterization
cold
hot
tests,
flexural
Vicat
shore
A
tests.
management
effect
is
quantified
infrared
thermography,
proportionally
relating
lags
melting/crystallization
investigated
products.
view
applications
30-60
°C,
main
different
are
summarized
compared.
Macromolecular Materials and Engineering,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Abstract
Alumina
supported
copper
oxide
(CuO/Al
2
O
3
)
and
Nickel
Oxide
(NiO)
loaded
polymer
composite
matrices
n‐hexadecane
(HD)
based
phase
change
materials
(PCMs)
are
prepared
characterized.
The
composites
assigned
as
supporting
for
shape‐stabilization
of
PCM
synthesized
by
emulsion‐templating
approach,
the
PCMs
impregnation
HD
into
matrices.
effect
CuO/Al
NiO
particles
different
sizes
used
heat
transfer
promoters
in
matrices,
on
morphological
properties,
thermal
stabilities,
latent
storage
characteristics
(LHS)
evaluated
using
characterization
methods.
melting
temperature
obtained
is
found
to
be
≈18
°C
values
varied
range
95.0−114.5
J
g
−1
.
properties
investigated
performing
a
T‐History
test
obtaining
release
curves.
with
exhibited
higher
stability
capacity
addition
enhanced
conduction
than
included
PCMs.
According
results,
it
revealed
that
shape‐stabilized,
thermally
remarkable
energy
potential
use
low‐temperature
systems.
International Journal of Building Pathology and Adaptation,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 12, 2025
Purpose
This
study
aims
to
design
a
high-performance
building
envelope
system
with
focus
on
evaluating
energy
savings
considering
the
hot
climate.
Design/methodology/approach
A
thermal
storage
approach
based
inorganic
phase
change
material
(PCM)
was
adopted
regulate
both
temperature
and
humidity
conditions
when
added
envelopes.
The
microencapsulation
technology
used
form
new
PCM
microcapsules
by
combining
agent
conduction
accelerating
encapsulate
an
PCM.
relevant
parameters
of
thermophysical
characteristics
synthesized
were
tested
analyzed.
Also,
numerical
validation
done
for
energy-saving
evaluation
in
envelope.
Findings
results
showed
that
have
high
latent
heat
capacities
enhanced
values.
simulation
conducted
Conduction
Finite
Difference
solution
algorithm
(CondFD)
approved
efficiency
proposed
compositions
Research
limitations/implications
Due
applying
composition
addition
instead
replacement
method,
solutions
are
not
suitable
improving
performance
lightweight
construction.
Originality/value
provides
promising
energy-efficient
originality
is
represented
adding
carbon
nanoparticles
as
shell
overcome
low
issue
PCMs.
In
testing
impacts
different
doses
microcapsules.
