Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 29, 2025
Metal-organic
framework
(MOF)-derived
carbon
materials
are
commonly
used
as
sensing
materials,
but
their
limited
accessibility
to
active
sites
and
specific
surface
area
restrict
applications.
In
this
study,
we
proposed
a
simple
method
involving
facile
tannic
acid
etching
calcination
create
NiCo-embedded
hollow
N-doped
nanocubes
(NiCo@HNC)
using
MOFs
sacrificial
templates.
The
resulting
NiCo@HNC
material
has
large
area,
improved
mass
transport
channels,
enhanced
exposure
of
electroactive
due
its
unique
structure
high
porosity,
leading
electrocatalytic
activity.
Moreover,
with
the
utilization
substrate
dopamine
functional
monomer,
ratiometric
molecularly
imprinted
electrochemical
sensor
was
developed
for
selective
sensitive
detection
carbendazim
(CBZ).
This
demonstrated
wide
linear
range
0.0003-10
μM
low
limit
0.1
nM.
addition,
utilized
accurate
quantification
CBZ
in
actual
carrot/strawberry
samples
recovery
96.0-103.0%,
indicating
potential
practical
application.
Biosensors,
Journal Year:
2024,
Volume and Issue:
14(6), P. 268 - 268
Published: May 24, 2024
In
this
study,
we
report
a
multiplexed
platform
for
the
simultaneous
determination
of
five
marine
toxins.
The
proposed
biosensor
is
based
on
disposable
electrical
printed
(DEP)
microarray
composed
eight
individually
addressable
carbon
electrodes.
electrodeposition
gold
nanoparticles
surface
offers
high
conductivity
and
enlarges
electroactive
area.
immobilization
thiolated
aptamers
AuNP-decorated
electrodes
provides
stable,
well-orientated
organized
binary
self-assembled
monolayer
sensitive
accurate
detection.
A
simple
electrochemical
aptasensor
AuNPs
was
designed
to
synchronously
detect
multiple
cyanotoxins,
namely,
microcystin-LR
(MC-LR),
Cylindrospermopsin
(CYL),
anatoxin-α,
saxitoxin
okadaic
acid
(OA).
choice
toxins
their
widespread
presence
toxicity
aquatic
ecosystems
humans.
Taking
advantage
conformational
change
upon
target
binding,
cyanotoxin
detection
achieved
by
monitoring
resulting
electron
transfer
increase
square-wave
voltammetry.
Under
optimal
conditions,
linear
range
estimated
be
from
0.018
nM
200
all
toxins,
except
MC-LR
where
possible
within
0.073
150
nM.
Excellent
sensitivity
with
limits
0.0033,
0.0045,
0.0034,
0.0053
0.0048
MC-LR,
CYL,
OA,
respectively.
Selectivity
studies
were
performed
show
absence
cross-reactivity
between
analytes.
Finally,
application
tap
water
samples
revealed
very
good
agreement
calibration
curves
obtained
in
buffer.
This
could
open
window
pollutants
different
matrices.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 3, 2024
Abstract
Along
with
an
ever‐deepening
understanding
of
the
catalytic
principle
natural
enzymes,
rational
design
high‐activity
biomimetic
nanozymes
has
become
a
hot
topic
in
current
research.
Inspired
by
active
centers
enzymes
consisting
sites
and
binding
pockets,
Cu‐doped
CoS
2
hollow
nanocube
(Cu/CoS
HNCs)
nanozyme
integrating
substitution
defects
vacancies
is
developed
through
defect
engineering
strategy.
It
shown
that
Cu/CoS
HNC
serve
as
pockets
sites,
respectively.
The
construction
this
key
center
accelerated
electron
transfer
from
Co/Cu
redox
cycle
significantly
improve
substrate
affinity
efficiency
HNCs
nanozymes,
which
results
excellent
performance
nanozymes.
Using
superior
enzymatic
activity
HNCs,
fluorescence
detection
platform
for
alkaline
phosphatase
(ALP)
established,
wider
range
lower
limit
(LOD)
than
previous
work.
This
work
broadens
family
provide
new
idea
development
novel
high
enzyme
activity,
well
guideline
highly
sensitive
fluorescent
sensors.
