Desalination,
Journal Year:
2024,
Volume and Issue:
586, P. 117788 - 117788
Published: May 27, 2024
The
membrane
with
significantly
improved
transport,
separation,
and
stability
in
distillation
were
generated.
thorough
material
physicochemical
characterization
allows
to
understand
how
the
introduction
of
3D
re-entrant
surface
nanoarchitecture
impacts
performance
desalination
removal
hazardous
volatile
organic
compounds
(VOCs)
performance.
Based
on
PVDF,
construction
rare
earth
metal
oxides
(REMOs)
smart
modifiers
(CeO2
Lu2O3)
was
successfully
accomplished
via
stable
covalent
bonds,
ensuring
membranes
during
separation
process,
even
long-lasting
tests
(>
50
days).
REMOs
linked
likers,
giving
them
additional
features,
i.e.,
movement
nanoparticles
inspired
by
Cilia
biological
membranes.
Such
biomimicry
enhanced
transport
turbulency
keeping
free
from
salt
deposition.
exhibiting
high
hydrophobicity
also
displayed
superhydrophobic
behavior
at
a
micro-scale,
attributed
formation
fractal-like
structures
inorganic
domain.
It
is
first
example
where
REMO
applied,
causing
substantial
enhancement
efficiency
owing
affinity
between
separated
system
described
analyzed
Hansen
Solubility
Parameters
Pearson's
hard–soft
acid–base
(HSAB)
theory.
An
improvement
process
index
(PSI)
factor
β
followed
for
PVDF
(PSI
=
5,
1.7),
PVDF-thiol-CeO2
279,
9.7).
MD
possessing
exceptional
resistance
wetting
(with
critical
tension
approximately
15
mN
m−1)
fabricated
integrating
hierarchically
structured
texture.
Desalination,
Journal Year:
2024,
Volume and Issue:
584, P. 117742 - 117742
Published: May 21, 2024
In
the
presented
studies,
novel
type
of
separation
materials
dedicated
to
membrane
distillation
was
generated
and
systematically
analyzed.
Utilizing
poly(vinylidene
fluoride)
(PVDF)
electrospun
membranes
as
a
base,
hybrid
organic-inorganic
were
developed
enhance
performance.
These
exhibited
high
hydrophobicity,
featuring
superhydrophobicity
on
micro-scale
due
fractal-like
structures
inorganic
domain
surface.
Rare-earth
metal
oxides
(REMO)
implemented
for
first
time
smart
modifiers,
covalently
attached
functionalized
Three
REMO
types
selected
investigate
their
impact
performance
in
air-gap
(AGMD)
desalination
process.
Chemical
attachment
via
long
enough
linkers
formed
flexible
active
surface
structure,
facilitating
transport
separation.
Dynamic
goniometric
studies
evaluated
wetting
stability.
Particularly
noteworthy
enhanced
with
Ho2O3
particles,
flux
salt
rejection
rates
14.41
±
1.35
kg
m−2
h−1
>99.5
%,
respectively.
The
stability
affinity
further
examined
using
Hansen
Solubility
Parameters
Pearson's
hard–soft
acid–base
(HSAB)
theory.
potential
is
seen
not
only
desalination.
With
ability
control
properties
by
different
silane
linkers,
oleophobicity/oleophilicity
can
be
achieved,
practical
use
wastewater
treatment
or
oil/water
possible.
Membranes,
Journal Year:
2025,
Volume and Issue:
15(4), P. 104 - 104
Published: April 1, 2025
Vacuum
membrane
distillation
(VMD)
is
a
promising
process
for
water
desalination.
However,
it
suffers
some
obstacles,
such
as
fouling
and
wetting,
due
to
the
inadequate
hydrophobicity
of
high
vacuum
pressure
on
permeate
side.
Therefore,
improving
surface
roughness
important.
In
this
study,
effect
1H,1H,2H,2H-Perfluorodecyltriethoxysilane
(PFTES)
morphology
performance
CNM/PAC/PVDF
membranes
at
various
concentrations
was
investigated
first
time.
Membrane
characteristics
FTIR,
XRD,
FE-SEM,
EDX,
contact
angle,
before
after
modification
were
analyzed
tested
using
VMD
The
results
showed
that
coated
with
1
wt.%
PFTES
had
higher
flux
lower
rejection
than
2
PFTES.
enhanced
angle
117°
increased
salt
above
99.9%,
set
23.2
L/m2·h
35
g/L
NaCl
feed
solution,
65
°C
temperature,
0.6
L/min
flow
rate,
21
kPa
(abs)
pressure.
This
means
PFTES-coated
PVDF
exhibited
slightly
hydrophobicity,
rejection,
stability
over
long-term
operation.
These
outstanding
indicate
potential
novel
CNM/PAC/PVDF/PFTES
saline
Moreover,
study
presents
useful
guidance
enhancement
structures
physical
properties
in
field
desalination
porous
membranes.
Membranes,
Journal Year:
2024,
Volume and Issue:
14(5), P. 117 - 117
Published: May 19, 2024
Membrane
distillation
(MD)
is
considered
a
promising
technology
for
desalination.
In
the
MD
process,
membrane
pores
are
easily
contaminated
and
wetted,
which
will
degrade
permeate
flux
salt
rejection
of
membrane.
this
work,
SiC
ceramic
membranes
were
used
as
supports,
an
Al2O3
micro-nano
structure
was
constructed
on
its
surface.
The
surface
energy
Al2O3@SiC
composite
reduced
by
organosilane
grafting
modification.
effective
deposition
nanoflowers
increased
roughness
enhanced
anti-fouling
anti-wetting
properties
membranes.
Simultaneously,
presence
also
regulated
pore
structures
thus
decreased
size.
addition,
effects
Al2(SO4)3
concentration
sintering
temperature
morphology
performance
investigated
in
detail.
It
demonstrated
that
water
contact
angle
resulting
152.4°,
higher
than
pristine
(138.8°).
treatment
saline
containing
35
g/L
NaCl,
about
11.1
kg⋅m−2⋅h−1
above
99.9%.
Note
cannot
be
employed
due
to
larger
This
work
provides
new
method
preparing
superhydrophobic
MD.
