Three-dimensional
superhydrophilic
materials
hardly
achieve
continuous
high-flux
demulsification
and
separation
for
oil-in-water
emulsions
due
to
intrinsic
oleophilicity
leading
potential
penetration
of
oil
droplets
through
hydration
layer
contamination
on
the
surface
over
long-term
processes.
Constructing
oleophobic
micro-regions
can
intensify
anti-oil-fouling
capacity
three-dimensional
materials.
Herein,
a
composite
superhydrophilic-oleophobic
copper
foam
was
prepared
co-deposition
aminated
fluorinated
carbon
nanotubes,
skillfully
introducing
inherent
interface
anti-oil-adhesion
capacity.
Through
column
technique,
modified
foams
achieved
surfactant-stabilized
free
without
interruption
cleaning
with
high
fluxes
6000
10000
L·m-2·h-1,
efficiencies
95.1%
97.4%,
repectively.
Various
after
transformed
into
immiscible
oil-water
mixtures,
which
be
quickly
separated
pure
water
at
aid
second-step
procedure
by
mesh.
Importantly,
amount
recycled
consistent
that
in
feed
emulsion
during
separation,
indicating
accumulated
could
maintain
dynamic
equilibrium
steady-state
achieved.
The
represents
significant
breakthrough
industrial
application
separation.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 14, 2024
Abstract
Considering
the
potential
threats
posed
by
oily
wastewater
to
ecosystem,
it
is
urgently
in
demand
develop
efficient,
eco‐friendly,
and
intelligent
oil/water
separation
materials
enhance
safety
of
water
environment.
Herein,
an
hydrogel‐coated
wood
(PPT/PPy@DW)
membrane
with
self‐healing,
self‐cleaning,
oil
pollution
detection
performances
fabricated
for
controllable
oil‐in‐water
(O/W)
emulsions
water‐in‐oil
(W/O)
emulsions.
The
PPT/PPy@DW
prepared
loading
polypyrrole
(PPy)
particles
on
delignified
(DW)
membranes,
further
modifying
hydrogel
layer
as
oil‐repellent
barrier.
layered
porous
structure
selective
wettability
endow
great
performance
various
O/W
(≥98.69%
efficiency
≈1000
L
m
−2
h
−1
bar
permeance).
Notably,
degree
can
be
monitored
real‐time
based
changed
voltage
generated
during
emulsion
separation,
oil‐polluted
self‐cleaned
soaking
recover
its
performance.
high
affinity
makes
effective
trapping
from
mixed
surfactant‐stabilized
W/O
eco‐friendly
low‐cost
multifunctional
shows
promising
on‐demand
provides
new
ideas
functional
improvement
biomass
materials.
