With
the
rapid
development
of
industry,
problem
water
pollution
has
become
increasingly
serious.
Though
there
are
many
separation
materials
available
to
solve
this
problem,
how
separate
multiple
wastewater
at
same
time
remains
a
challenge.
Hydrogel
coating
is
suitable
for
use
in
field
oil-water
separation,
and
chitosan
(CS)
effective
removing
anionic
dyes.
Therefore,
preparation
membranes
with
hydrogel
containing
CS
can
effectively
emulsion
dye
wastewater.
In
paper,
DA@CNTs/CS
was
prepared
by
sequentially
Cu2+,
DA@CNTs,
Cu2+
on
surface
polyvinylidene
fluoride
(PVDF)
membrane
deposition
self-assembly,
which
enhanced
hydrophilicity
made
it
highly
underwater
oleophobic
antifouling.
The
alkali
treated
PVDF
contained
large
amount
-OH,
formed
coordination
bonds
CS,
DA
could
be
stably
loaded
membrane.
addition,
introduction
rigid
CNTs
improved
performance
modified
under
extreme
conditions
such
as
high
PH
salt
concentration.
PVDF-DA@CNTs/CS
had
an
ideal
pure
flux
(PWF)
1470
(L·m-2·h-1)
efficiency
99.7%
99.4%
emulsion.
contaminant
quickly
removed
washing
DI
water.
overall
also
maintained
very
level
long-term
filtration
summary,
study
provides
new
approach
complex
treatment
technology.
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
469, С. 134101 - 134101
Опубликована: Март 20, 2024
CO2-responsive
materials
have
emerged
as
promising
adsorbents
for
the
remediation
of
refractory
organic
dyes-contaminated
wastewater
without
formation
byproducts
or
causing
secondary
pollution.
However,
realizing
simultaneous
adsorption−separation
complete
removal
both
anionic
and
cationic
dyes,
well
achieving
deeper
insights
into
their
adsorption
mechanism,
still
remains
a
challenge
most
reported
materials.
Herein,
novel
type
urchin-like
Fe3O4
microspheres
(U-Fe3O4@P)
has
been
successfully
fabricated
to
enable
ultrafast,
selective,
reversible
dyes
by
utilizing
CO2
triggering
gas.
Meanwhile,
U-Fe3O4@P
exhibit
capability
initiate
Fenton
degradation
non-adsorbable
dyes.
Our
findings
reveal
exceptionally
rapid
equilibrium,
achieved
within
mere
5
minutes,
an
outstanding
maximum
capacity
561.2
mg
g−1
dye
methyl
orange
upon
stimulation.
Moreover,
99.8%
methylene
blue
can
be
effectively
degraded
through
reaction.
Furthermore,
long-term
unresolved
interaction
mechanism
with
is
deciphered
comprehensive
experimental
theoretical
study
density
functional
theory.
This
work
provides
paradigm
guidance
designing
next-generation
eco-friendly
highly
efficient
purification
complex
dye-contaminated
in
environmental
engineering.
Massive
discharge
contaminated
ecosystem
threatens
human
health
aquatic
environment,
ascribed
hazardous
toxic
natures
Thus,
advanced
from
extremely
promising.
magnetic
were
devised
selective
anionic/cationic
even
synthetic
effluent
combining
CO2-triggered
degradation.
developing
'smart'
