Nano Materials Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 1, 2024
With
the
development
of
advanced
catalysts,
assessment
emerging
single-atom-based
electrochemical
catalysts
(SAECs)
has
significantly
increased
owing
to
their
similarity
natural
enzymes.
They
hold
substantial
potential
for
design
and
construction
sensing
platforms.
The
fabrication
electrodes
revealed
sensitive
selective
analyses.
Among
various
nanomaterials,
transition
metal
element-based
single-atom,
bimetallic
metal-free
each
with
well-defined
active
sites,
exhibit
enhanced
catalytic
activity,
selectivity,
stability.
rational
composition,
size,
strategic
single-atom
electrocatalysts
on
carbon
platforms
enable
them
function
effectively
in
complex
environments
demonstrate
efficiency
between
sites
electrode
strategies.
Unlike
traditional
SAECs
are
considered
substitutes
This
perspective
been
described
a
mini-review
that
highlights
recent
developments
elements-based
single/bimetallic
single
atoms
anchored
nanostructures.
Additionally,
there
rise
printed
as
biomedical,
environmental,
food
toxin
detection.
challenges
prospects
multiple
applications
also
concisely
elaborated.
Angewandte Chemie International Edition,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 12, 2025
Abstract
Nanozymes
with
atomically
dispersed
metal
sites
(ADzymes),
especially
single‐atom
nanozymes,
have
attracted
widespread
attention
in
recent
years
due
to
their
unique
advantages
mimicking
the
active
of
natural
enzymes.
These
nanozymes
not
only
maximize
exposure
catalytic
but
also
possess
superior
activity
performance,
achieving
challenging
reactions.
position
ADzymes
as
highly
promising
candidates
field
sensing
and
biosensing.
This
review
summarizes
classification
properties
ADzymes,
systematically
highlighting
some
typical
regulation
strategies
involving
central
metal,
coordination
environment,
etc.,
achieve
catalytical
activity,
specificity,
multifunctionality.
Then,
we
present
advances
different
fields,
including
colorimetry,
fluorescence,
electrochemistry,
chemiluminescence,
photoelectrochemistry,
electrochemiluminescence.
Taking
advantage
resultant
show
great
potential
goal
sensitivity,
selectivity
accuracy
for
detection
various
targets.
Specifically,
underlying
mechanisms
terms
signal
amplification
were
discussed
detail.
Finally,
current
challenges
perspectives
on
development
advanced
are
discussed.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(10), С. 11984 - 11994
Опубликована: Май 15, 2024
A
rational
design
of
high-efficiency
single
atoms
represents
a
desirable
goal
for
the
construction
efficient
electrochemical
devices.
Nevertheless,
their
activity
is
constricted
by
exposure
to
reactants.
Herein,
novel
ruthenium
(Ru)
atom
anchored
on
graphene
frameworks
(GFs)
that
feature
interconnected
porous
structures
(defined
as
Ru
SA/GFs)
synthesized
through
one-step
photoreduction
strategy.
SA/GFs
possess
additional
structural
merits
favor
promoting
reactant
transport
and
maximizing
efficacy
atoms,
which
manifest
notable
amplified
electrocatalytic-reduction
toward
hydrogen
peroxide
(H2O2)
than
nanoparticles/GFs,
indicating
remarkable
biomimetic
nanozyme-like
H2O2.
Density
functional
theory
(DFT)
calculations
reveal
with
atomically
dispersed
significantly
facilitate
reduction
efficiency
In
addition,
sensitive
SA/GFs-based
sensing
platform
detection
H2O2
low
limit
0.063
μM
developed
demonstrated.
This
work
not
only
exploits
an
innovative
approach
synthesize
single-atom
GFs
sensor
but
also
contributes
broader
utilization
in
advancement
diverse
high-performance
Angewandte Chemie,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 12, 2025
Abstract
Nanozymes
with
atomically
dispersed
metal
sites
(ADzymes),
especially
single‐atom
nanozymes,
have
attracted
widespread
attention
in
recent
years
due
to
their
unique
advantages
mimicking
the
active
of
natural
enzymes.
These
nanozymes
not
only
maximize
exposure
catalytic
but
also
possess
superior
activity
performance,
achieving
challenging
reactions.
position
ADzymes
as
highly
promising
candidates
field
sensing
and
biosensing.
This
review
summarizes
classification
properties
ADzymes,
systematically
highlighting
some
typical
regulation
strategies
involving
central
metal,
coordination
environment,
etc.,
achieve
catalytical
activity,
specificity,
multifunctionality.
Then,
we
present
advances
different
fields,
including
colorimetry,
fluorescence,
electrochemistry,
chemiluminescence,
photoelectrochemistry,
electrochemiluminescence.
Taking
advantage
resultant
show
great
potential
goal
sensitivity,
selectivity
accuracy
for
detection
various
targets.
Specifically,
underlying
mechanisms
terms
signal
amplification
were
discussed
detail.
Finally,
current
challenges
perspectives
on
development
advanced
are
discussed.
International Journal of Electrochemical Science,
Год журнала:
2024,
Номер
19(8), С. 100672 - 100672
Опубликована: Май 26, 2024
Hydrogen
peroxide
(H2O2)
is
widely
distributed
in
living
organisms
and
the
environment,
its
concentration
closely
associated
with
human
health.
Therefore,
development
of
an
efficient
sensitive
detection
method
for
H2O2
imperative.
In
this
study,
a
PtPd
nano-enzyme
composite
was
electrodeposited
onto
platinum
wire
microelectrode
(ME)
using
one-step
electrochemical
deposition
to
fabricate
sensor
(PtPd/ME)
exceptional
performance.
The
successful
modification
on
electrode
surface
confirmed
by
scanning
electron
microscopy
(SEM)
X-ray
energy
dispersive
spectroscopy
(EDS).
Chronoamperometry
(i-t)
employed
investigate
various
technical
parameters
including
sensitivity,
limit,
range,
reproducibility,
anti-interference
capability.
results
demonstrate
that
exhibits
sensitivity
11.94
mA
M-1
cm-2
limit
0.034
μM
wide
linear
range
from
31.25
4.15
mM
while
also
demonstrating
excellent
properties.
These
superior
performances
can
be
attributed
strong
catalytic
activity
towards
provided
nanoparticles
as
well
fast
transfer
rate
facilitated
microelectrodes.
Furthermore,
effectively
enables
real-time
monitoring
released
ascorbic
acid-stimulated
vascular
endothelial
cells
demonstrates
potential
detecting
contact
lens
care
solutions.
findings
provide
valuable
insights
food
drug
testing,
great
key
pathological
processes
within
cells.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 30, 2024
The
development
of
sensitive
and
accurate
glucose
biosensors
is
significant
in
diabetic
patient
monitoring.
Here,
we
synthesize
carbon-decorated
Fe3O4
nanotubes
(Fe3O4@C
NTs)
using
a
rational
designed
template
method.
Through
catalytic
oxidation
typical
colorimetric
reaction,
the
prepared
Fe3O4@C
NTs
showed
significantly
better
peroxidase-like
oxidase-like
performances
than
other
similar
Fe3O4-based
nanomaterials.
Moreover,
optimal
pH,
temperature,
concentration
for
were
4.0,
60
°C,
40
μg/mL,
respectively.
We
additionally
investigated
steady-state
kinetics
NTs,
their
catalyzed
reactions
found
to
follow
Michaelis–Menten
model.
Based
on
activity
they
employed
label-free,
rapid,
selective,
highly
detection
H2O2
glucose,
demonstrating
potential
application
determination.
