La-based
materials
have
garnered
considerable
attention
as
potential
adsorbents
for
phosphate
removal
because
they
capture
with
high
affinity,
producing
an
ultralow
phosphorous-concentration
output.
Herein,
metal–organic
frameworks
(La–MOFs,
La-1,3,5-benzentricarboxylate)
tunable
structures
were
fabricated
by
regulating
the
coordination
solvent
environment,
which
largely
determines
both
pore
structure
and
chemical
components
of
their
corresponding
La2O2CO3
derivatives
adsorption
performance.
A
porous
derivative
(W–D
T500)
derived
from
water/N,N-dimethylformamide
(DMF)
guided
La–MOF
showed
abundant
mesopores
a
surface
area,
pore-opening
degree
under
high-temperature
pyrolysis
is
higher
in
W–D
T500
than
obtained
water/ethanol
solvent–guided
La–MOF.
also
had
carbonate
content
crystal
owing
to
efficiency
carbon
conversion
carbonate-oxides
T500.
Consequently,
exhibited
superior
capacity,
selectivity,
excellent
recycling
Phosphate
was
attached
via
ligand-exchange
mechanism
between
CO32−/–OH.
This
study
provides
guidance
strategy
construct
functional
La–MOFs
removal.
Water,
Journal Year:
2022,
Volume and Issue:
14(15), P. 2445 - 2445
Published: Aug. 7, 2022
The
excessive
release
of
phosphorus
is
a
prime
culprit
for
eutrophication
and
algal
bloom
in
the
aquatic
environment,
there
always
an
urgent
need
to
develop
effective
methods
deal
with
pollution.
Ce-based
oxide
type
compelling
adsorbent
phosphate
removal,
self-templating
strategy
used
construct
high-performance
oxides
adsorption
this
study.
A
“sea
anemone”-like
CeFe
cyanometallate
(CM)
3D
microstructure
fabricated
provide
precursor
synthesizing
CeFe-based
(CeFe-CM-T)
by
high-temperature
pyrolysis.
as-prepared
CeFe-CM-T
maintains
anemone”
morphology
well
has
abundant
micropores/mesopores,
which
render
its
superior
capacity
1~2
orders
magnitude
higher
than
that
commercial
CeO2
Fe3O4
materials.
Moreover,
shows
high
selectivity
removal
when
it
co-exists
other
anions
natural
organic
matter
exhibits
excellent
recycling
performance.
It
demonstrates
both
Ce3+
Ce4+
are
reserved
oxides,
where
serves
as
main
active
site
capture,
forms
stable
Ce-PO4
compounds
via
ligand-exchange
mechanism.
Thus,
using
CM
potential
method
porous
removal.
La-based
materials
have
garnered
considerable
attention
as
potential
adsorbents
for
phosphate
removal
because
they
capture
with
high
affinity,
producing
an
ultralow
phosphorous-concentration
output.
Herein,
metal–organic
frameworks
(La–MOFs,
La-1,3,5-benzentricarboxylate)
tunable
structures
were
fabricated
by
regulating
the
coordination
solvent
environment,
which
largely
determines
both
pore
structure
and
chemical
components
of
their
corresponding
La2O2CO3
derivatives
adsorption
performance.
A
porous
derivative
(W–D
T500)
derived
from
water/N,N-dimethylformamide
(DMF)
guided
La–MOF
showed
abundant
mesopores
a
surface
area,
pore-opening
degree
under
high-temperature
pyrolysis
is
higher
in
W–D
T500
than
obtained
water/ethanol
solvent–guided
La–MOF.
also
had
carbonate
content
crystal
owing
to
efficiency
carbon
conversion
carbonate-oxides
T500.
Consequently,
exhibited
superior
capacity,
selectivity,
excellent
recycling
Phosphate
was
attached
via
ligand-exchange
mechanism
between
CO32−/–OH.
This
study
provides
guidance
strategy
construct
functional
La–MOFs
removal.
