Asia-Pacific Journal of Chemical Engineering,
Journal Year:
2024,
Volume and Issue:
19(4)
Published: April 27, 2024
Abstract
The
increasing
demand
for
boron
has
resulted
in
its
contamination
of
water
supplies.
Nanofiltration
membranes,
particularly
thin‐film
nanocomposite
(TFN)
have
shown
promise
removing
contaminants.
This
study
evaluated
the
removal
capabilities
negatively
and
positively
charged
TFN
membranes
alongside
a
control
composite
(TFC)
membrane
without
nanoparticles.
Piperazine
(PIP,
membrane)
or
polyethyleneimine
(PEI,
aqueous
monomer
was
reacted
with
trimesoyl
chloride
(TMC)
n‐hexane
solution
via
interfacial
polymerization
(IP)
on
polyethersulfone
(PES)
substrate
to
form
TFC
membrane.
During
preparation,
titanium
dioxide
(TiO₂)
sulfocalix[4]arene
(SCA4)
were
introduced
as
active
nanoparticles
monomer.
Boron
performance
using
10
ppm
solution.
PES
gave
highest
flux,
which
307.80
LMH.
For
membrane,
TFC–PIP
had
higher
flux
at
113.71
LMH
than
TFC–PEI.
Furthermore,
containing
PEI
lower
those
PIP
These
findings
highlight
potential
incorporating
nanoparticles,
effective
removal.
Further
research
optimization
can
contribute
addressing
challenge
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 21, 2024
Abstract
The
kinetics
and
storage‐capacity
of
NiCoMg‐ternary
layered
double
hydroxide
(NiCoMg‐LDH)
are
successfully
boosted
by
valence
engineering.
As
the
cathode
for
aqueous
magnesium‐ion
batteries
(AMIBs),
assembled
NiCoMg‐LDH//active
carbon
(AC)
delivers
a
high
specific
discharge
capacity
(121.0
mAh·g
−1
at
0.2
A·g
),
long‐term
cycling
stability
(85%
retention
after
2000
cycles
1.0
)
an
excellent
performance
−30
°C.
Moreover,
NiCoMg‐LDH//perylenediimide
(PTCDI)
is
assembled,
achieving
stability.
X‐ray
absorption
spectra
(XAS)/X‐ray
photoelectron
spectroscopy
(XPS)
analyses
Density
functional
theory
(DFT)
calculations
disclose
that
electrons
redistributed
due
to
3
d
orbital
overlap
Co/Ni
atoms
in
NiCoMg‐LDH,
which
obviously
reduces
states
atoms,
enhances
Mg─O
bond
strength
degree
hybridization
O
2
p
orbitals.
Hence,
electronic
conductivity
significantly
enhanced
electrostatic
repulsion
between
Mg
2+
host
layers
greatly
reduced,
giving
rise
improved
diffusion
.
Furthermore,
situ
Raman/X‐ray
diffraction
(XRD)
ex
XPS
reveal
corresponding
energy‐storage
mechanism.
This
paper
not
only
demonstrates
feasibility
LDHs
as
AMIBs,
but
also
offers
new
modification
method
engineering
high‐performance
electrode
materials.
