To
solve
the
problem
that
a
single
superwetting
material
has
limited
function
in
oil-water
separation,
this
study
reported
multifunctional
and
sustainable
separation
strategy
by
compositing
underwater
superoleophobic
underoil
superhydrophobic
materials
(HS).
The
quartz
sands
with
an
oil
contact
angle
(OCA)
of
152.68°
were
prepared
adjusting
particle
size
nature
sands.
This
demonstrated
water
flux
4688
L·m-2·h-1
low-density
mixture
efficiency
98.2%,
which
was
maintained
above
97.9%
over
50
cycles.
It
also
effective
separating
oil-in-water
emulsions.
For
HS,
modified
dodecyltrimethoxysilane.
optimized
HS-4
variant
exhibited
properties
(WCA)
157.06°.
achieved
4422
water-dichloromethane
96.9%,
remaining
96.1%
after
Additionally,
it
effectively
separated
emulsions
to
less
than
10
nm
gathered
oil.
Furthermore,
placing
units
at
bottom
filter,
cyclic
high-density
mixtures,
emulsions,
consistently
exceeded
96.5
%
In
addition,
mechanism
oleophobic
hydrophobic
relative
concentration
distribution
molecular
dynamics
simulations.
intelligent
method
marks
significant
advancement
diverse
mixtures.
Friction,
Journal Year:
2024,
Volume and Issue:
12(9), P. 1909 - 1928
Published: May 1, 2024
Abstract
The
separation
of
oil-in-water
emulsion
is
an
urgent
challenge
because
its
massive
production
and
discharge
from
daily
industrial
activities
have
caused
severe
hazards
to
the
ecosystem
serious
threats
human
health.
Membrane
technology
considered
outstanding
solution
strategy
for
emulsions
due
unique
advantages
low
cost,
high
efficiency,
easy
operation,
environmental
friendliness.
However,
membrane
easily
fouled
by
oil
droplets
during
process,
causing
a
sharp
decline
in
permeation
flux,
which
greatly
inhibits
long-term
use
largely
shortens
membrane’s
life.
Recently,
it
was
found
that
endowing
membranes
with
special
wettability
e.g.,
superhydrophilic
superoleophobic
can
enhance
permeability
continuous
water
phase
inhibit
adhesion
droplets,
thus
promoting
performance
anti-oil-fouling
property
oily
emulsions.
In
this
paper,
we
review
discuss
recent
developments
separating
emulsions,
including
mechanism
analysis
membrane,
fouling
issues,
design
strategies,
representative
studies
enhancing
ability
performance.
