Adsorption Science & Technology,
Год журнала:
2024,
Номер
42
Опубликована: Янв. 1, 2024
Thorium
is
a
promising
nuclear
fuel;
however,
even
small
amount
in
wastewater
can
cause
significant
radioactive
pollution.
Therefore,
it
urgent
to
develop
effective
adsorbents
for
the
efficient
removal
of
thorium
solve
this
problem.
Herein,
phytic
acid
modification
carboxylated
Zirconium-based
metal-organic
framework
materials
(UiO-66-COOH-PA)
has
been
obtained
by
rapid
high-temperature
carbonization,
which
exhibits
excellent
performance
removing
(IV)
acidic
aqueous
solutions.
The
maximum
adsorption
capacity
UiO-66-COOH-PA-2
(with
40%
mass
ratio
acid)
solution
reaches
315.5
mg/g
at
pH
4,
more
than
twice
that
unmodified
Zr-based
metal
organic
(MOF)
material.
kinetics
UiO-66-COOH-PA
on
analyzed
using
two
different
isothermal
models,
Langmuir
and
Freundlich
isotherm
models.
It
turns
out
model
suitable
data.
process
dynamic
equilibrium
very
quickly,
while
dynamics
follows
pseudo-second-order
kinetic
model.
low
values
indicates
material
containing
phosphorus
especially
systems.
also
selectivity
(up
90.2%)
Th(IV)
presence
several
coexisting
rare-earth
ions.
Overall,
integration
phosphorus-modified
Zr-MOFs
represents
advancement
technology,
offering
pathway
toward
management
waste
liquid.
Environmental Science Nano,
Год журнала:
2024,
Номер
11(5), С. 2103 - 2111
Опубликована: Янв. 1, 2024
Al-MOF
synthesized
based
on
MOF
irradiation
stability
rules
exhibits
high
against
β-irradiation
and
ultra-high
thorium
adsorption
capacity,
which
proves
its
huge
potential
application
value
in
the
field
of
radionuclide
adsorption.
Inorganic Chemistry,
Год журнала:
2023,
Номер
62(28), С. 10881 - 10886
Опубликована: Июль 6, 2023
Metal
phosphonate
frameworks
(MPFs)
consisting
of
tetravalent
metal
ions
and
aryl-phosphonate
ligands
feature
a
large
affinity
for
actinides
excellent
stabilities
in
harsh
aqueous
environments.
However,
it
remains
elusive
how
the
crystallinity
MPFs
influences
their
performance
actinide
separation.
To
this
end,
we
prepared
new
category
porous,
ultrastable
MPF
with
different
crystallinities
uranyl
transuranium
The
results
demonstrated
that
crystalline
was
generally
better
adsorbent
than
amorphous
counterpart
ranked
as
top-performing
one
plutonium
strong
acidic
solutions.
A
plausible
sequestration
mechanism
unveiled
by
using
powder
X-ray
diffraction
tandem
vibrational
spectroscopy,
thermogravimetry,
elemental
analysis.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 31, 2024
Abstract
We
report
an
X‐ray
radiation‐induced
modification
of
the
structure
and
gas
permeation
behavior
ZIF‐8
membranes.
With
300
min
irradiation
time,
CO
2
permeance
decreases
by
only
9
%,
while
N
CH
4
permeances
reduce
75
65
respectively,
leading
to
3.7‐
2.6‐fold
enhancements
in
ideal
selectivity
for
/N
/CH
.
Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 31, 2024
Abstract
We
report
an
X‐ray
radiation‐induced
modification
of
the
structure
and
gas
permeation
behavior
ZIF‐8
membranes.
With
300
min
irradiation
time,
CO
2
permeance
decreases
by
only
9
%,
while
N
CH
4
permeances
reduce
75
65
respectively,
leading
to
3.7‐
2.6‐fold
enhancements
in
ideal
selectivity
for
/N
/CH
.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 28, 2024
Abstract
Thorium
(Th),
as
a
promising
nuclear
fuel,
can
cause
serious
radioactive
contamination
even
in
small
amount
wastewater.
Therefore,
it
is
urgent
to
develop
effective
adsorbents
for
the
removal
of
thorium.
Herein,
phytic
acid
modification
carboxylated
zirconium
based
on
metal-organic
framework
(UIO-66-COOH-PA)
was
obtained
by
rapid
high-temperature
carbonization,
which
exhibited
excellent
performance
removing
Th
(IV)
acidic
solutions.
The
maximum
adsorption
capacity
UIO-COOH-PA-2
(with
mass
ratio
40%)
reached
315.5
mg/g
at
pH
4,
more
than
twice
that
unmodified
Zr-based
MOF
material
(151.2
mg/g).
thorium
process
dynamic
equilibrium
quickly
different
temperatures.
Freundlich
model
fitted
kinetics
UIO-COOH-PA
better
and
its
dynamics
followed
pseudo-second-order
kinetic
model.
low
values
indicated
materials
containing
phosphorus
were
suitable
especially
systems.
It
also
selectivity
(up
90.2%)
presence
many
coexisting
rare-earth
ions.
These
results
will
provide
new
strategy
design
efficient
from
wastewater
environments.
