Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 24, 2024
The
selective
separation
and
purification
of
artesunate
(ARU)
artemisinin
(ART)
using
zirconium-based
metal–organic
frameworks
(MOF),
especially
UiO-66
MOF,
are
receiving
increasing
attention.
In
this
study,
tunable
"hydrophobic"
sites
thiol
(–SH)
were
introduced
to
amino-functionalized
MOFs
(UiO-66-NH2)
fabricate
a
thiol-amino
bifunctional
UiO-66/polyvinylidene
fluoride
(PVDF)-blended
membrane
(S1-UiO/PVDF-DPIM)
via
the
delayed-phase-inversion
method
for
ARU/ART.
adsorption
results
indicated
that
modification
UiO-66-NH2
with
can
indeed
increase
ARU
adsorption.
thiol-functional
MOF
(S1-UiO-66-NH2)
was
chosen
as
optimal
it
possessed
maximum
capacity
(111.14
mg
g–1)
highest
selective-separation
factor
(α
=
51.84).
ATR
FT-IR
dynamic
spectrum
disclosed
recognition
mechanism,
indicating
incorporating
groups
into
hydrophilic
hydrophobic
boost
efficiency.
Moreover,
static-selective
permeation
showed
S1-UiO/PVDF-DPIM
preferentially
transfers
when
mixed
ART,
even
achieving
complete
ARU/ART
separation.
most
crucial
aspect
introduction
core
–SH
new
spontaneously
formed
disulfide
bonds
S1-UiO/PVDF-DPIM,
creating
alternated
hydrogen
interactions.
This
work
provides
an
alternative
strategy
prepare
hydrophobic–hydrophilic
MOF-based
membranes
highly
efficient
complex
analogue
systems.
Analytical Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 5, 2025
The
combination
of
diuron
(DU)
and
thidiazuron
(TDZ)
is
commonly
used
in
cotton
production
for
its
excellent
adaptability
to
low
temperatures,
which
may
lead
increased
crop
soil
pollution.
simultaneous
detection
DU
TDZ
poses
significant
challenges
due
their
weak
overlapping
signals,
along
with
an
unclear
electrochemical
mechanism
TDZ.
This
study
developed
a
dual-channel
multifunctional
molecularly
imprinted
(MMIP-EC)
sensing
platform
by
optimizing
the
substrate
material
MIP
layer
high
performance.
First,
amino-functionalized
graphene-based
poly(pyrrole)-poly(3,4-ethylenedioxythiophene)
(NH2-rGO/PPy-PEDOT)
conductivity
was
synthesized
as
substrate.
Subsequently,
MMIPs
were
prepared
one
step
using
electropolymerization
introducing
chloroauric
acid
(HAuCl4)
bifunctional
monomers
(dopamine
thiophene).
method
not
only
enhanced
specific
binding
capacity
MMIP
but
also
amplified
signal
through
synergistic
effect
reduced
AuNPs
monomers.
Furthermore,
two
independent
modules
(MMIP-DU
MMIP-TDZ)
integrated
into
EC
transmission
responses
separate
windows.
Finally,
based
on
high-performance
liquid
chromatography-mass
spectrometry
(HPLC-MS)
kinetics
studies,
it
speculated
that
oxidation
via
carbonylation
secondary
amine
under
strongly
acidic
conditions,
followed
hydrolysis
form
carboxyl
group,
reveals
sensor
exhibited
performance
selectivity
sensitivity,
limits
26.6
pg/mL
39.2
(TDZ).
In
conclusion,
this
presents
novel
perspective
cost-effective
highly
efficient
diverse
environmental
pollutants.
