Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
64(1), P. 202 - 212
Published: Dec. 30, 2024
The
limited
availability
of
uranium
(U)
resources
poses
significant
challenges
to
the
advancement
nuclear
energy.
Recycling
from
spent
fuel
is
critical,
but
coexistence
lanthanides
(Ln)
complicates
extraction
process
significantly.
Here,
we
present
an
N/O
ligand,
(E)-N′-(pyridin-2-ylmethylene)
picolinohydrazide
(PYPH),
designed
for
selective
recovery
U(VI)
over
Ln(III/IV)
in
acidic
environments.
3,6-Bis(2-pyridinyl)-1,2,4,5-tetrazine
(BPTZ)
and
N,N-dimethylformamide
(DMF),
when
subjected
heat,
gradually
generate
PYPH
formic
acid
aqueous
solution;
this
can
be
employed
recovery.
This
approach,
known
as
situ
reactive
technique,
enhances
capture
capacity,
selectivity,
resistance
while
effectively
mitigating
interference
Ce(IV).
At
pH
3
0.1
M
HNO3,
separation
factors
binary
systems
exceeded
103
102,
respectively,
achieving
purities
exceeding
99%.
Monocrystalline
structure
analysis
revealed
two-dimensional
planar
coordination
complexes,
demonstrating
their
exceptional
selectivity.
study
underscores
potential
proposes
new
avenues
developing
innovative
strategies
actinides
(An)
using
structural
theoretical
modeling.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
The
contamination
of
water
sources
by
radioactive
elements
like
uranium
and
thorium
presents
significant
environmental
health
challenges.
To
resolve
this
issue
waste
derived
calcium
MOF
has
been
developed
using
PET
bottle
marble
slurry.
Gels,
Journal Year:
2025,
Volume and Issue:
11(1), P. 24 - 24
Published: Jan. 1, 2025
Composite
adsorbents
based
on
a
natural
biopolymer
matrix
of
chitosan,
to
which
4-amino-N′-hydroxy-1,2,5-oxadiazole-3-carboximidamide
and
its
Se
derivative
were
attached,
synthesized.
A
complex
physicochemical
analysis
methods
indicates
that
the
direct
introduction
with
high
ionic
permeability
into
reaction
mixture
contributes
formation
homogeneous
particles
composite
developed
surface
morphology,
enhances
kinetic
capacitive
parameters
uranium
sorption
in
liquid
media.
It
has
been
established
The
synthesized
materials
had
increased
sorption-selective
properties
towards
pH
range
from
4
9
under
static
conditions.
amidoxime
during
attachment
polymer
(Se-chit)
creation
more
chemically
stable
highly
effective
adsorbent,
compared
binding
chitosan
(43AF-chit).
optimal
for
synthesis
established.
was
demonstrated
ratio
should
be
within
2:1
1:2.
As
mass
content
increases,
material
gradually
dissolves
transforms
gel,
resulting
radioactive
waste
chemical
composition.
found
increase
2–10
times
those
non-composite
materials.
capacity
solutions
6
8
can
reach
approximately
400–450
mg
g−1.
Under
dynamic
conditions,
filtration
cycle
values
(before
slips
filtrate
≥
50%)
improve
significantly
when
transitioning
adsorbent
one:
increasing
50
800
b.v.
2700
4000
8.
These
results
indicate
sorbents
are
promising
removal
media,
suitable
both
purification
recovery
radionuclides
as
valuable
raw
