Small Structures,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 25, 2024
Carbon
dots
(CDots)
are
classically
synthesized
by
organic
functionalization
of
pre‐existing
small
carbon
nanoparticles,
but
most
the
dot
samples
reported
in
literature
prepared
thermal
carbonization
processing
selected
precursors.
Highlighted
and
discussed
this
article
necessity
using
proper
conditions
for
produced
to
be
CDots
like,
similarities
differences
sample
structure
morphology
between
two
kinds
samples,
their
associated
property
mechanistic
consequences.
Microchimica Acta,
Год журнала:
2025,
Номер
192(2)
Опубликована: Янв. 15, 2025
Abstract
The
hydrothermal
synthesis
is
presented
of
copper-doped
carbon
dots
(Cu-CDs)
from
citric
acid,
urea,
and
copper
chloride,
resulting
in
blue-fluorescent
particles
with
stable
emission
at
438
nm
when
excited
340
nm.
Through
comprehensive
spectroscopic
microscopic
characterization
(FTIR,
XPS,
UV,
HRTEM),
the
Cu-CDs
demonstrated
remarkable
stability
across
varying
pH
levels,
ionic
strengths,
temperatures,
UV
exposure.
Notably,
exhibit
ultra-sensitive
selective
detection
hexavalent
chromium
[Cr(VI)]
ions
aqueous
environments
driven
by
fluorescence
quenching.
system
showed
a
robust
linear
response
to
Cr(VI)
0–80
µM
range,
an
impressive
limit
(LOD)
0.186
µM,
significantly
lower
than
WHO’s
permissible
0.96
µM.
These
findings
position
as
effective
tool
for
environmental
monitoring
water
safety
applications.
Graphical
Journal of Nanoparticle Research,
Год журнала:
2025,
Номер
27(2)
Опубликована: Янв. 31, 2025
Abstract
Carbon
dots
represent
a
rapidly
advancing
and
expanding
research
field,
with
large
number
of
literature
reports
on
their
potential
technological
applications
including
those
relevant
to
food
safety.
In
this
article,
the
dot
samples
prepared
by
deliberate
chemical
functionalization
preexisting
small
carbon
nanoparticles
or
thermal
carbonization
various
organic
precursors
under
different
processing
conditions
are
highlighted
critiqued
for
similarities
differences
in
sample
structure-morphology
properties,
especially
antimicrobial
properties
safety–related
uses.
Also
discussed
representative
recent
examples
use
inactivate
foodborne
pathogens,
disrupt
biofilms
prevent
formation,
extend
shelf
life
products,
which
involve
antibacterial
mechanisms.
Some
perspectives
further
development
dots–based/derived
platform
related
excellent
application
opportunities
safety
provided.
