Small,
Journal Year:
2024,
Volume and Issue:
20(28)
Published: Feb. 23, 2024
Abstract
Counterfeit
products
and
data
vulnerability
present
significant
challenges
in
contemporary
society.
Hence,
various
methods
technologies
are
explored
for
anticounterfeiting
encoding,
with
luminescent
tracers,
particularly
carbon
dots
(CDs),
emerging
as
a
notable
solution.
CDs
offer
promising
contributions
to
product
security,
environmental
sustainability,
the
circular
economy.
This
critical
review
aims
highlight
luminescence
responsiveness
of
physical
chemical
stimuli,
achieved
through
nanoengineering
their
structure.
The
discussion
will
delve
into
tunable
mechanisms
decay
times
CDs,
investigating
preferential
excitations
such
up‐conversion,
delayed
fluorescence,
room
temperature
phosphorescence,
persistent
luminescence,
energy
charge
transfer,
well
photo‐chemical
interactions.
These
insights
crucial
advancing
solutions.
Following
this
exploration,
systematic
focus
on
research
CDs'
smart
encoding
applications,
encompassing
anticounterfeiting,
tracing,
quality
certification,
information
encryption.
Finally,
address
key
implementing
CDs‐based
technology,
providing
specific
strategies
aimed
at
maximizing
stability
efficacy
applications.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 18, 2024
Abstract
Carbon
dots
(CDs)
are
an
emerging
class
of
nanomaterials
with
attractive
optical
properties,
which
promise
to
enable
a
variety
applications.
An
important
and
timely
question
is
whether
CDs
can
become
functional
sustainable
alternative
incumbent
nanomaterials,
notably
inorganic
quantum
dots.
Herein,
the
current
CD
literature
comprehensively
reviewed
as
regards
their
synthesis
function,
focus
on
sustainability
aspects.
The
study
quantifies
why
it
that
be
synthesized
biomass
sole
starting
material
free
from
toxic
precious
metals
critical
raw
materials.
It
further
describes
analyzes
employed
pretreatment,
chemical‐conversion,
purification,
processing
procedures,
highlights
issues
usage
solvents,
energy
efficiency,
safety
waste
management.
specially
shown
many
reported
methods
concerningly
wasteful
utilization
non‐sustainable
solvents
energy.
finally
recommended
future
studies
should
explicitly
consider
discuss
environmental
influence
selected
material,
generated
byproducts,
quantitative
information
required
amounts
consumables,
provided
evaluation
presented
in
upscaled
context.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(29)
Published: Feb. 20, 2024
Abstract
Rechargeable
Zn‐based
batteries
provide
a
compelling
supplement
to
subsistent
energy
storage
devices
owing
their
high
density,
good
safety,
and
low
cost.
Nevertheless,
inherent
imperfections
such
as
dendrite
growth,
side
reactions,
andante
reaction
kinetics,
severely
impede
commercialization.
As
new
0D
nanomaterials,
carbon
dots
(CDs)
with
unique
characteristics
excellent
electrochemical
activity,
exhibit
promising
potential
exploitation
in
electrochemistry
electrocatalysis
areas.
Herein,
the
adhibition
of
CDs
resolving
aforementioned
drawbacks
is
introduced.
To
begin
with,
concepts,
physicochemical
properties,
synthetic
methods
are
discussed.
Next,
recent
developments
advances
exploiting
respectively
ameliorating
performance
Zn
anode,
cathode,
electrolytes
ion
bifunctional
electrocatalytic
activities
including
oxygen
reduction
evolution
for
Zn‐air
batteries,
roundly
reviewed
minutely
generalized.
Finally,
current
challenges
prospects
surveyed
well,
aiming
offer
reference
blossom
advanced
batteries.
