ABSTRACT
Herein,
a
kind
of
N‐doped
fluorescent
carbon
dots
(N‐CDs)
were
prepared
by
using
melamine
and
carboxymethyl
cellulose
(CMC)
as
precursors
through
straightforward
hydrothermal
method.
The
designed
sensor
displayed
uniform
nanoscale
distribution,
excellent
hydrophilicity,
strong
fluorescence
emission
with
quantum
yield
37.98%.
Moreover,
the
N‐CDs
could
be
utilized
for
Fe
3+
detection
“On–Off”
transition
via
mechanism
internal
filtration
effect
(IFE)
static
quenching
process.
Two
good
linear
relationships
within
concentrations
from
10
to
100μM
100
500
μM
obtained,
which
indicated
that
quantitative
analysis
calculated
limit
(LOD)
was
0.510
(3σ/slope).
Additionally,
used
in
solid
phase
based
on
strategy,
is
promising
anticounterfeiting
application.
Nanomaterials,
Год журнала:
2025,
Номер
15(6), С. 436 - 436
Опубликована: Март 12, 2025
It
is
of
great
significance
to
develop
carbon
quantum
dots
(CQDs)
using
green
sources,
which
are
cheap,
non-toxic
and
harmless,
further
expand
their
application
scopes,
e.g.,
fluorescence
sensors,
blue
light
screening.
In
this
study,
we
have
prepared
Peperomia
tetraphylla-based
(PT-CQDs)
with
strong
water
solubility,
good
salt
resistance,
specific
quenching
reactions
excellent
optical
properties
via
a
simple
one-step
hydrothermal
method.
one
application,
PT-CQDs
utilized
as
sensor
due
high
selectivity
sensitivity
ferric
ions
(Fe3+).
The
limit
detection
(LOD)
was
2.7
μmol·L−1.
On
the
other
hand,
PT-CQDs/polyvinyl
alcohol
(PVA)
films
ultraviolet-
(UV)
high-energy
(HEBL)-blocking
were
obtained.
obtained
exhibited
weight
blocking
rate
100%
in
UV
80%
HEBL.
concentrations
composites
could
also
be
controlled
achieve
desired
light-blocking
rate.
addition,
able
absorb
convert
it
forms
light.
These
suggest
potential
applications
development
advanced
screening
sensors.
Abstract
In
this
research,
P‐CDs
were
compounded
based
on
Hedyotis
Diffusa
Willd
by
using
a
hydrothermal
method
of
which
the
morphology,
chemical
composition,
and
optical
properties
characterized.
The
P‐doped
CDs
exhibited
effective
antibacterial
activity
against
E.
coli
S.
aureus
.
Strong
electrostatic
interactions
between
negatively
charged
bacteria
positively
P‐CDs,
production
H
2
O
thought
to
be
responsible
for
bacterial
death.
Moreover,
showed
remarkable
fluorescent
property
with
an
excellent
scope
detecting
metal
ion.
sensitive
response
Fe
3+
in
broad
linear
range
from
0.001
µM
0.01
limit
detection
4.43
×
10
−3
µM.
This
study
developed
affordable
environmentally
friendly
carbon
dot
as
valid
agent
sensor.
ABSTRACT
Herein,
a
kind
of
N‐doped
fluorescent
carbon
dots
(N‐CDs)
were
prepared
by
using
melamine
and
carboxymethyl
cellulose
(CMC)
as
precursors
through
straightforward
hydrothermal
method.
The
designed
sensor
displayed
uniform
nanoscale
distribution,
excellent
hydrophilicity,
strong
fluorescence
emission
with
quantum
yield
37.98%.
Moreover,
the
N‐CDs
could
be
utilized
for
Fe
3+
detection
“On–Off”
transition
via
mechanism
internal
filtration
effect
(IFE)
static
quenching
process.
Two
good
linear
relationships
within
concentrations
from
10
to
100μM
100
500
μM
obtained,
which
indicated
that
quantitative
analysis
calculated
limit
(LOD)
was
0.510
(3σ/slope).
Additionally,
used
in
solid
phase
based
on
strategy,
is
promising
anticounterfeiting
application.
