This
work
synthesized
poly
ethanolamine
amidoxime
modified
winter
melon
and
chitosan-derived
biochar
(PEA-CTS@WBC)
using
chemical
crosslinking
method
for
uranium(VI)
removal.
The
factors
influencing
adsorption
by
PEA-CTS@WBC,
including
pH,
adsorbent
dosage,
time,
temperature,
initial
U(VI)
concentration
were
explored.
material's
performance
was
characterized,
the
underlying
mechanism
of
removal
analyzed
various
techniques.
results
demonstrated
that
PEA-CTS@WBC
effectively
removed
U(VI),
achieving
a
maximum
capacity
485.89
mg
g-1
at
pH
5.0.
dynamics
studies
showed
more
in
line
with
second-order
kinetic
model,
indicating
main
process.
XPS
analysis
process
primarily
due
to
formation
stable
complexes
NH3+-C(O),
N-C,
C-N,
C=C,
O-H
C=O.
research
introduction
amide
groups
significantly
improved
effect
biochar-chitosan
gels
on
U(VI).
had
high
selective
characteristics
good
reusability
aqueous
solutions.
an
economical,
efficient
composite
material.
These
findings
provided
theoretical
basis
treatment
wastewater
contaminated
Materials Horizons,
Год журнала:
2024,
Номер
11(14), С. 3364 - 3374
Опубликована: Янв. 1, 2024
Efficient
uranium
extraction
from
seawater
is
critical
for
the
development
of
nuclear
industry.
Herein,
a
polydopamine/salicylaldoxime
decorated
hierarchical
zeolitic
imidazolate
framework-8
(H-PDA/SA-ZIF-8)
constructed
by
using
controlled
etching
process.
Benefiting
combination
PDA/SA
and
(ZIF-8),
as
well
process,
H-PDA/SA-ZIF-8
possesses
multiaffinity
sites,
excellent
specific
surface
area
(1234.92
m2
g-1),
pore
structure.
The
exhibits
adsorption
capacity
(Qm
=
869.6
mg
selectivity,
reusability
in
adsorption.
process
fits
very
with
Langmuir
isotherm
model
pseudo-second-order
models,
equilibrates
within
20
min
(C0
L-1).
Furthermore,
shows
remarkable
antibacterial
ability.
Impressively,
to
natural
reaches
6.9
g-1
after
circulation
15
days.
Therefore,
promising
fascinating
material
seawater.
