ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Achieving
precise
control
over
emission
characteristics,
such
as
wavelength
and
lifetime,
is
critical
to
unlocking
the
full
potential
of
luminescent
nanomaterials
for
diverse
applications.
In
this
work,
we
present
a
strategy
fine-tuning
optical
properties
upconversion
nanocrystals
by
engineering
parts-per-million
(ppm)-doping-level
lanthanide
impurities.
We
show
that
even
trace
impurities
(∼10
ppm,
fewer
than
10
atoms
per
nanocrystal),
which
are
only
hundredth
conventionally
studied
doping
levels
were
previously
considered
negligible,
serve
efficient
energy
traps
in
migration-based
processes.
By
introducing
controlled
trapping
centers
via
minimal
impurity
doping,
successfully
regulate
colors
lifetimes
with
high
precision.
Moreover,
find
high-purity
exhibit
significantly
greater
lifetime
changes
response
surface
interactions,
enabling
an
energy-transfer-based
ultrasensitive
spectrum
sensing.
This
approach
facilitates
development
upconversion-based
DNA
sensors
detection
limits
order
magnitude
lower
those
conventional
methods,
highlighting
these
highly
effective
nanoprobes
interference-resistant
biosensing
complex
environments.
Mineral Processing and Extractive Metallurgy Review,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 24
Published: Jan. 5, 2025
China,
a
key
player
in
the
global
supply
chain,
exemplifies
application
of
sophisticated
rare
earth
processing
technologies
that
markedly
reduce
environmental
impact
element
extraction.
The
integration
advanced
flotation
collectors
and
related
reagents
has
been
instrumental
minimizing
ecological
footprints
while
enhancing
recovery
rates
within
industry.
Case
studies
from
Bayan
Obo,
Sichuan,
South
China
underscore
practical
efficacy
these
reagents,
leading
to
notable
improvements
performance
process
efficiency.
Advocated
is
adoption
green
strategies,
such
as
bioleaching,
which
further
mitigate
industry's
impact.
Through
technological
advancements
commitment
stewardship,
poised
lead
industry
sustainability
set
standard
for
responsibility.
With
the
advancement
of
nuclear
industry,
recovering
99TcO4–
from
alkaline
waste
has
become
urgently
necessary.
In
this
study,
an
aqueous
biphasic
system
(ABS)
based
on
imidazolium-based
ionic
liquid
(IL)
was
developed
to
meet
demand.
The
phase
transition
mechanism
investigated
by
using
cloud
point
titration,
small-angle
X-ray
scattering
(SAXS),
and
dynamic
light
(DLS).
ABS
formed
through
aggregation
growth
imidazolium
micelles,
which
were
influenced
NaOH/IL
concentration
temperature.
Furthermore,
anion
exchange
extraction
identified
Fourier
transform
infrared
spectroscopy
(FT-IR),
electrospray
ionization
mass
spectrometry
(ESI-MS),
Raman
spectroscopy,
1H
NMR
13C
analyses.
This
IL-ABS
demonstrated
high
loading
capacity,
fast
kinetics,
selectivity
for
ReO4–
(an
analogue
radioactive
99TcO4–)
could
recover
over
95%
a
simulated
tank
supernatant
with
concentrations
NaOH
competing
anions.
Additionally,
loaded
be
easily
stripped
nitric
acid.
Compared
traditional
separation
methods,
is
efficient
green,
showing
promising
application
prospects
removal
waste.
Chemical Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Selective
crystallization
of
a
novel
thorium
metal–organic
framework
(NU-2500)
enables
the
efficient
separation
Th(
iv
)
from
initial
mixtures
with
rare
earth(
iii
ions.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Achieving
precise
control
over
emission
characteristics,
such
as
wavelength
and
lifetime,
is
critical
to
unlocking
the
full
potential
of
luminescent
nanomaterials
for
diverse
applications.
In
this
work,
we
present
a
strategy
fine-tuning
optical
properties
upconversion
nanocrystals
by
engineering
parts-per-million
(ppm)-doping-level
lanthanide
impurities.
We
show
that
even
trace
impurities
(∼10
ppm,
fewer
than
10
atoms
per
nanocrystal),
which
are
only
hundredth
conventionally
studied
doping
levels
were
previously
considered
negligible,
serve
efficient
energy
traps
in
migration-based
processes.
By
introducing
controlled
trapping
centers
via
minimal
impurity
doping,
successfully
regulate
colors
lifetimes
with
high
precision.
Moreover,
find
high-purity
exhibit
significantly
greater
lifetime
changes
response
surface
interactions,
enabling
an
energy-transfer-based
ultrasensitive
spectrum
sensing.
This
approach
facilitates
development
upconversion-based
DNA
sensors
detection
limits
order
magnitude
lower
those
conventional
methods,
highlighting
these
highly
effective
nanoprobes
interference-resistant
biosensing
complex
environments.
