Selective
dissolution
is
a
common
strategy
for
adjusting
the
surface
states
of
LaMnO3
perovskite
oxides.
Herein,
we
synthesized
LaMnO3(LMO)
with
B-Site
vacancies
by
ascorbic
acid
to
selectively
remove
Mn
cations
enhance
phosphate
adsorption.
The
optimized
LMO
abundant
defects
(LMO-AA3)
presents
large
area,
plenty
mesoporosity
and
suitable
electronic
structure.
Particularly,
adsorption
capacity
(113.48
mg/g)
LMO-AA3
circa
10
times
than
that
LMO.
Adsorption
experiments
shows
occurred
both
chemically
physically
on
heterogeneous
surfaces,
as
pseudo-second-order
kinetic
model
Redlich-Peterson
isotherm
predicted.
stimulated
mechanism
absorption
includes
enhancing
electrostatic
attraction,
ligand
exchange
-OH
groups
reducing
energy.
According
regeneration
testing,
appears
be
potentially
useful
material
high
low
concentration
purification
phosphate.
method
may
offer
an
appropriate
choice
characteristics
effective
capture.
Chemical Engineering Journal,
Год журнала:
2024,
Номер
494, С. 152848 - 152848
Опубликована: Июнь 6, 2024
Phosphorus
as
a
diminishing
resource,
is
an
essential
element
for
the
growth
of
biota.
However
elevated
concentrations
in
water
imbalance
ecosystem
and
cause
eutrophication.
To
address
both
problems,
two
highly
efficient
biochars,
namely
La-OB
CeLa-OB
were
synthesised
by
lanthanum
cerium
doping.
The
performance
evaluated
both,
batch
dynamic
regimes
with
synthetic
phosphate
(PO43--P)
solutions
eutrophic
lake
water.
PO43--P
adsorption
mechanisms
investigated
terms
pH,
kinetics,
isotherms,
activation
energy,
thermodynamics
in-depth
characterisation
(XPS,
FTIR,
XRD,
BET,
pHpzc
SEM-EDX);
feasibility
using
biochar
'real
life'
was
studied
column
filtration
low
high
concentrations,
along
reusability/desorption
toxicity
trials
environment.
mechanistic
study
showed
that
biochars
dominantly
made
inner-sphere
complexes
La
Ce
ligands
(as
monolayer),
while
outer-sphere
complexation
less
common.
exothermic
process
followed
Elovich
kinetic
Langmuir
isotherm
models
maximum
capacity
112
mg/g
40
CeLa-OB.
In
reached
78
mg/g,
metal
leaching
(0.08
mg/L)
to
Lepidium
sativum
germination
detected.
results
indicated
these
especially
could
be
used
circular
economy-based
treatment.
Journal of Environmental Management,
Год журнала:
2024,
Номер
358, С. 120892 - 120892
Опубликована: Апрель 25, 2024
Biological
approaches
via
biomolecular
extracts
of
bacteria,
fungi,
or
plants
have
recently
been
introduced
as
an
alternative
approach
to
synthesizing
less
nontoxic
nanomaterials,
compared
conventional
physical
and
chemical
approaches.
Among
these
biological
methods,
plant-mediated
(phytosynthesis)
are
reported
be
highly
beneficial
for
large-scale,
nanomaterial
synthesis.
However,
synthesis
nanomaterials
using
native
plant
extract
can
lead
bioprospecting
issues
deforestation
challenges.
On
the
other
hand,
non-native
invasive
non-indigenous
a
particular
geographic
location
that
grow
spread
rapidly,
ultimately
disrupting
local
endogenous
communities
ecosystems.
Thus,
controlling
eradicating
before
they
damage
ecosystem
is
necessary.
Even
though
mechanical,
chemical,
available
control
plants,
all
methods
possess
certain
limitations,
such
environmental
toxicity,
disturbance
in
nutrient
cycle,
loss
genetic
integrity.
Therefore,
were
proposed
novel
sustainable
source
phytochemicals
preparing
green
chemistry,
mainly
metallic
nanoparticles,
native,
agriculture-based,
medicinal
plants.
This
work
aims
cover
literature
gap
on
bionanomaterial
with
overview
bibliography
analysis
data
mining
advanced
visualization
tools.
In
addition,
potential
sustainable,
chemistry-based
preparation
maintaining
ecological
balance,
mechanism
formation
phytochemicals,
their
possible
applications
promote
also
discussed.
The
revealed
only
average
4
articles
published
last
10
years
(2013-2023)
non-native/invasive
synthesis,
which
shows
significance
this
article.
