Research Square (Research Square),
Journal Year:
2022,
Volume and Issue:
unknown
Published: Aug. 12, 2022
Abstract
An
effective
method
based
on
the
bisimidazole
ionic
liquid
functionalized
ZIF-8
solid-phase
extractant
(ZIF-8@MIM-MIM)
coupled
with
high
performance
chromatography
(HPLC)
for
separation/analysis
of
Rhodamine
B
was
established.
ZIF-8@MIM-MIM
characterized
by
FTIR,
XRD,
SEM
and
TEM.
Several
important
factors,
such
as
pH,
amount
extractant,
extract
time
types
eluents
were
investigated
in
detail.
Under
optimal
conditions,
linear
range
0.02-40.00
µg
mL
−
1
,
detection
limit
7.0
ng
correlation
good
(R
2
=
0.9986).
The
chili
powder,
red
wine,
plum
juice
strawberry
jam
proved
that
simple
effective,
could
be
used
to
separate
analyze
real
samples.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(19)
Published: Jan. 30, 2024
Abstract
The
integration
of
graphene
and
metal–organic
frameworks
(MOFs)
has
numerous
implications
across
various
domains,
but
fabricating
such
assemblies
is
often
complicated
time‐consuming.
Herein,
a
one‐step
preparation
graphene‐MOF
assembly
presented
by
directly
impregnating
vertical
(VG)
arrays
into
the
zeolitic
imidazolate
framework
(ZIF)
precursors
under
ambient
conditions.
This
approach
can
effectively
assemble
multiple
ZIFs,
including
ZIF‐7,
ZIF‐8,
ZIF‐67,
resulting
in
their
uniform
dispersion
on
VG
with
adjustable
sizes
shapes.
Hydrogen
defects
surface
are
critical
inducing
high‐efficiency
ZIF
assembly,
acting
as
reactive
sites
to
interact
facilitate
crystallisation.
versatility
VG‐ZIF‐67
further
demonstrated
exploring
process
MOF
amorphization.
Surprisingly,
this
leads
an
amorphous
thin‐film
coating
formed
(named
VG‐IL‐amZIF‐67),
which
preserves
short‐range
molecular
bonds
crystalline
ZIF‐67
while
sacrificing
long‐range
order.
Such
unique
film‐on‐graphene
architecture
maintains
essential
characteristics
functionalities
within
disordered
arrangement,
making
it
well‐suited
for
electrocatalysis.
In
electrochemical
oxygen
reduction,
VG‐IL‐amZIF‐67
exhibits
exceptional
activity,
selectivity,
stability
produce
H
2
O
acid
media.
The Analyst,
Journal Year:
2023,
Volume and Issue:
148(24), P. 6297 - 6305
Published: Jan. 1, 2023
Herein,
a
dual-mode
detection
system
was
constructed
for
efficient
and
accurate
of
bisphenol
A
(BPA)
with
the
assistance
BPA-induced
hybridization
chain
reaction
(HCR).
The
captured
DNA
(cDNA)
first
modified
on
surface
magnetic
spheres
gold
nanoparticles
polydopamine
then
hybridized
BPA
aptamer
to
form
double-stranded
(dsDNA).
In
presence
target,
released
from
sphere.
free
cDNA
triggered
HCR
construct
duplex.
Methylene
blue
(MB),
as
bifunctional
probe,
intercalated
into
amplify
photocurrent
(IPEC)
CdS-modified
electrode
generate
an
electrochemical
current
(IEC)
at
same
time.
Under
optimized
conditions,
PEC
EC
signal
responses
were
linear
logarithm
concentration
in
range
1.0
×
10-10
M
10-5
M.
limits
found
be
1.27
10-11
3.0
using
methods,
respectively.
biosensor
exhibited
good
performance
real
sample
analysis,
demonstrating
its
promising
potential
practical
applications.
addition,
this
strategy
provides
more
reliable
results.
