Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Март 13, 2023
Silver
ions
in
wastewater
streams
are
a
major
pollutant
and
threat
to
human
health.
Given
the
increasing
demand
relative
scarcity
of
silver,
these
could
be
lucrative
source
extract
metallic
silver.
Wastewater
is
complex
mixture
many
different
metal
salts,
developing
recyclable
sorbents
with
high
specificity
towards
silver
remains
challenge.
Here
we
report
that
molybdenum
oxide
(MoOx)
adsorbent
mixed-valence
(Mo(V)
Mo(VI))
demonstrates
selectivity
(distribution
coefficient
6437.40
mL
g-1)
for
Ag+
an
uptake
capacity
2605.91
mg
g-1.
Our
experimental
results
density
functional
theory
calculations
illustrate
mechanism
behind
adsorption
reduction.
show
Mo(V)
species
reduce
Ag,
which
decreases
energy
barrier
subsequent
reductions,
accounting
from
wastewater.
Due
its
selectivity,
MoOx
favorably
adsorbs
even
presence
interfering
ions.
High
selective
recovery
(recovery
efficiency
=
97.9%)
further
supports
practical
applications
sorbent.
Finally,
can
recycled
following
while
maintaining
97.1%
after
five
cycles.
The
method
expected
provide
viable
strategy
recover
Nanomaterials,
Год журнала:
2019,
Номер
9(3), С. 424 - 424
Опубликована: Март 12, 2019
Removal
of
contaminants
in
wastewater,
such
as
heavy
metals,
has
become
a
severe
problem
the
world.
Numerous
technologies
have
been
developed
to
deal
with
this
problem.
As
an
emerging
technology,
nanotechnology
gaining
increasing
interest
and
many
nanomaterials
remove
metals
from
polluted
water,
due
their
excellent
features
resulting
nanometer
effect.
In
work,
novel
nanomaterials,
including
carbon-based
zero-valent
metal,
metal-oxide
based
nanocomposites,
applications
for
removal
metal
ions
wastewater
were
systematically
reviewed.
Their
efficiency,
limitations,
advantages
compared
discussed.
Furthermore,
promising
perspective
environmental
was
also
discussed
potential
directions
future
work
suggested.
The Innovation,
Год журнала:
2021,
Номер
2(1), С. 100076 - 100076
Опубликована: Янв. 10, 2021
Covalent
organic
frameworks
(COFs)
are
a
new
type
of
crystalline
porous
polymers
known
for
chemical
stability,
excellent
structural
regularity,
robust
framework,
and
inherent
porosity,
making
them
promising
materials
capturing
various
types
pollutants
from
aqueous
solutions.
This
review
thoroughly
presents
the
recent
progress
advances
COFs
COF-based
as
superior
adsorbents
efficient
removal
toxic
heavy
metal
ions,
radionuclides,
pollutants.
Information
about
interaction
mechanisms
between
summarized
macroscopic
microscopic
standpoints,
including
batch
experiments,
theoretical
calculations,
advanced
spectroscopy
analysis.
The
adsorption
properties
assessed
compared
with
other
widely
used
adsorbents.
Several
commonly
strategies
to
enhance
materials'
performance
relationship
property
sorption
ability
also
discussed.
Finally,
summary
perspective
on
opportunities
challenges
proposed
provide
some
inspiring
information
designing
fabricating
environmental
pollution
management.
