Journal of Dispersion Science and Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 9
Published: Dec. 19, 2024
This
study
introduces
an
eco-friendly,
plasma-assisted
synthesis
approach
for
fabricating
carbon
dot-decorated
silver
heteronanocomposites
(Ag@CQD
HNCs)
utilizing
natural
orange-derived
precursors.
The
utilizes
room-temperature
plasma
to
rapidly
generate
quantum
dots
(CQDs)
from
orange
juice
and
nanoparticles
(AgNPs)
AgNO3,
with
peel
extract
serving
as
a
reducing
agent.
Unlike
traditional
methods,
which
often
require
high
temperatures,
toxic
chemicals,
or
prolonged
processing,
the
is
notable
its
speed,
ambient
temperature
operation,
minimal
use
of
reagents,
aligning
green
chemistry
principles.
method
reduces
environmental
impact
enhances
safety
scalability,
making
it
particularly
suited
sustainable
nanomaterial
production
around
5
nm
in
size,
coalesce
into
Ag@CQD
HNCs
measuring
approximately
25
nm,
exhibiting
unique
optical
properties
such
fluorescence
emission
at
350
excitation.
our
understanding
HNCs'
potential
applications
sensing,
imaging,
catalysis,
demonstrating
efficacy
benefits
fabrication.
Eng—Advances in Engineering,
Journal Year:
2024,
Volume and Issue:
5(3), P. 2223 - 2263
Published: Sept. 9, 2024
The
push
for
sustainability
in
nanomaterials
has
catalyzed
significant
advancements
the
green
synthesis
of
carbon
dots
(CDs)
from
renewable
resources.
This
review
uniquely
explores
recent
innovations,
including
integration
hybrid
techniques,
such
as
micro-wave-assisted
and
ultrasonic-assisted
hydrothermal
methods,
well
photocatalytic
synthesis.
These
combined
approaches
represent
a
breakthrough,
offering
rapid
production,
precise
control
over
CD
properties,
enhanced
environmental
sustainability.
In
addition,
emphasizes
growing
use
solvents
bio-based
reducing
agents,
which
further
reduce
footprint
production.
work
also
addresses
key
challenges,
consistently
controlling
properties—size,
shape,
surface
characteristics—across
different
processes.
Advanced
characterization
techniques
process
optimizations
are
highlighted
essential
strategies
to
overcome
these
hurdles.
Furthermore,
this
pioneers
circular
economy
principles
into
proposing
novel
sustainable
material
waste
reduction.
By
exploring
innovative
precursor
materials,
refining
doping
engineering
advocating
comprehensive
life
cycle
assessments,
sets
new
direction
future
research.
insights
provided
here
contribution
field,
paving
way
more
sustainable,
efficient,
scalable
production
with
diverse
applications
optoelectronics,
sensing,
remediation.
Materials Research,
Journal Year:
2025,
Volume and Issue:
28(suppl 1)
Published: Jan. 1, 2025
This
study
presents
the
pequi
(Caryocar
coriaceum)
as
a
new
biomass
source
for
carbon
dots
synthesis.
The
almond,
usually
discarded,
was
used
precursor
in
one-step
hydrothermal
green
synthesis
of
dots.
Pequi-based
(PQ-CDs)
exhibited
an
estimated
height
around
8
nm,
with
hydroxyl,
carbonyl,
and
amino
functional
groups
confirmed
by
FTIR,
bright
blue
emission,
quantum
yield
17.9%.
PQ-CDs
were
employed
fluorescent
sensors
Fe3+
ions,
based
on
quenching
fluorescence
interaction
ions.
sensor
demonstrated
linear
relationship
between
increase
ion
concentration,
LOD
1.16
μmol
L-1,
well
below
maximum
concentration
drinking
water
established
WHO.
are
cost-effective
highly
sensitive
alternative
ions
detection
samples
from
Cariri
region.
