Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 11, 2024
Abstract
The
rational
and
well‐structured
construction
of
electrocatalysts
with
exceptional
catalytic
activity
adsorption
capability
is
essential
for
effectively
addressing
the
challenges
faced
by
lithium‐sulfur
batteries
(LSBs).
In
this
paper,
synergistic
effect
spatial
confinement
design
doping
engineering‐induced
electronic‐state
modulation
leveraged
to
suppress
shuttle
effect,
high‐efficiency
catalysis
polysulfide
conversion
achieved.
Ni‐doped
CoSe
2
nanoparticles
are
in
situ
formed
on
a
3D
MXene
hollow
microsphere
via
self‐assembly
selenization
strategies.
structure
provides
serves
as
physical
barrier,
mitigating
while
prevention
self‐stacking
ensures
maximal
exposure
Ni‐CoSe
provide
additional
active
sites
enhances
their
properties.
These
findings
corroborated
electrochemical
experiments
XRD
analysis,
demonstrating
significantly
improved
rate
capabilities
cycling
stability
LSBs
utilizing
functional
electrocatalyst.
This
study
presents
valuable
pathway
exploiting
structural
develop
high‐performance
LSBs.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(32), P. 22724 - 22735
Published: Aug. 2, 2024
Electrochemiluminescence
(ECL)
is
typically
confined
to
a
micrometric
region
from
the
electrode
surface.
This
study
demonstrates
that
ECL
emission
can
extend
up
several
millimeters
away
employing
electrogenerated
chlorine
bubbles.
The
mechanism
behind
this
bubble-enhanced
was
investigated
using
an
Au
microelectrode
in
chloride-containing
and
chloride-free
electrolyte
solutions.
We
discovered
at
gas/solution
interface
driven
by
two
parallel
effects.
First,
bubble
corona
effect
facilitates
generation
of
hydroxyl
radicals
capable
oxidizing
luminol
while
attached
Second,
hypochlorite
generated
sustains
for
over
200
s
extends
range
5
mm
into
solution,
following
detachment.
new
approach
increase
intensity
luminol-based
assays
5-fold
compared
conventional
method.
demonstrated
through
glucose
bioassay,
midrange
mobile
phone
camera
detection.
These
findings
significantly
expand
potential
applications
extending
its
effective
time
space.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 18, 2024
Abstract
Exploring
novel
electrochemiluminescence
(ECL)
co‐reaction
accelerators
to
construct
ultrasensitive
sensing
systems
is
a
prominent
focus
for
developing
advanced
ECL
sensors.
However,
challenges
still
remain
in
finding
highly
efficient
and
understanding
their
promoting
mechanisms.
In
this
paper,
ZIF‐67@MXene
nanosheet
composites,
with
conductive
in‐plane
structure
confined‐stable
pore/channel,
are
designed
act
as
high‐efficient
achieve
significant
enhancement
the
luminol‐H
2
O
based
system.
Mechanism
investigation
suggests
that
hydroxyl
radicals
(·OH)
singlet
oxygen
(
1
)
can
be
selectively
preferentially
generated
on
due
stable
absorption
of
·OH
,
leading
remarkable
efficiency
luminol
(830%).
Finally,
by
designing
plasmonic
NH
‐MIL‐88@Pd
nanozyme,
an
“on‐off”
switch
immunosensor
constructed
detection
prostate‐specific
antigen
(PSA).
Based
multiple
signal
amplification
effect,
linear
range
PSA
expanded
three
orders
magnitude.
The
limit
also
improved
from
1.44
×
10
−11
9.1
−13
g
mL
−1
.
This
work
proposes
effective
method
preparation
provides
new
strategy
sensitive
cancer
markers.
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 27, 2025
Early
and
portable
detection
of
pathogenic
bacteria
is
crucial
for
ensuring
food
safety,
monitoring
product
quality,
tracing
the
sources
bacterial
infections.
Moving
beyond
traditional
plate-culture
counting
methods,
analysis
active
components
offers
a
rapid
means
quantifying
bacteria.
Here,
metal-organic
framework
(MOF)-derived
NiCo-layered
double
hydroxide
nanosheets
(LDHs),
synthesized
via
Kirkendall
effect,
were
employed
as
highly
effective
oxidase
mimics
to
generate
reactive
oxygen
species
(ROS).
These
ROS
quickly
etched
gold
nanobipyramids
(Au
NBPs),
producing
vivid
multicolormetric
response.
Experimental
results
theoretical
calculations
indicated
that
exceptional
oxidase-like
activity
NiCo-LDHs
stemmed
from
presence
bimetallic
sites
vacancies
modulating
local
electronic
structure
LDHs.
Additionally,
β-galactosidase
(β-Gal),
biomarker
Escherichia
coli,
reacted
with
p-aminophenyl-β-d-galactopyranoside
(PAPG)
form
p-aminophenol
(PAP),
reducing
agent
which
consumes
ROS,
thereby
inhibiting
etching
Au
NBPs.
Furthermore,
three-dimensional
(3D)-printed
point-of-care
testing
(POCT)
shell
was
designed
device
visually
detect
β-Gal
E.
coli
in
conjugation
smartphones.
This
study
not
only
provides
novel
approach
rational
design
nanozymes
but
also
establishes
portably
visual
biosensing
platform
detecting
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 30, 2025
Conventional
dual-signal
electrochemiluminescence
(ECL)
sensors
feature
high
sensitivity
and
reliability,
but
the
involvement
of
coreactants
inevitably
results
in
a
complex
configuration
shows
reproducibility
risk.
Here,
we
propose
an
exogenous
coreactant-free
platform,
comprising
luminol
(anodic
luminophore),
CdSe
quantum
dots
(cathodic
Co3O4/Ti3C2
electrocatalyst
(coreaction
promoter).
At
different
redox
potentials,
induces
water
oxidation
oxygen
reduction
to
produce
•OH
O2•-
radicals,
which
subsequently
drive
cathodic
anodic
ECL
emission,
respectively.
The
pathways
are
confirmed
by
reactive
species
(ROS)
scavenging,
effect
dissolved
is
excluded.
By
integrating
with
molecular
imprinting
technology,
this
sensor
employed
for
quantitative
detection
trenbolone.
It
exhibits
sensitivity,
broad
linear
range
(1.0
×
101
1.0
108
fg
mL-1),
low
limit,
capability
real
samples.
This
work
presents
new
endogenous
ROS-driven
that
excludes
use
offers
insights
into
ROS
generation
design.
