Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 28, 2024
Abstract
Colloidal
quantum
dots
(QDs)
have
emerged
as
a
versatile
photocatalyst
for
wide
range
of
photocatalytic
transformations
owing
to
its
high
absorption
coefficient,
large
surface‐to‐volume
ratio,
stability,
and
efficient
charge
energy
transfer
dynamics.
The
past
decades
witnessed
rapid
development
QDs
artificial
photocatalysis.
In
this
review,
the
unique
characteristics
are
focused
on,
including
size
effect,
compositional
structural
diversity,
tunable
surface
chemistry,
photophysics,
that
can
be
utilized
transformations.
recent
advancements
in
organic
enabled
by
photocatalysts
summarized.
opportunities
highlighted
tackle
reactions
previously
unattainable
with
small
molecule
photocatalysts.
Lastly,
an
outlook
is
provided
future
directions
field.
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(16), P. 8503 - 8519
Published: April 12, 2024
Today,
cleaning
the
environment
using
photocatalytic
technology
is
one
of
main
research
activities.
In
this
study,
carbon
dots
(C-dots)
were
anchored
on
oxygen-vacancy-enriched
TiO2
quantum
(QDs)/TiO2
oxygen
vacancies
(OVs)
a
facile
procedure.
The
resultant
ternary
QDs/TiO2
OVs/C-dots
photocatalysts
with
dot
size
almost
4.55
nm
used
for
detoxification
aqueous
solutions
containing
four
antibiotics
and
three
organic
dyes
as
well
inactivation
two
pathogenic
bacteria,
including
Escherichia
coli
Staphylococcus
aureus,
upon
visible
light.
degradation
constant
tetracycline
over
optimized
nanocomposite
reached
714
×
10–4
min–1,
which
was
17.3,
12.1,
2.92
times
higher
than
QDs,
OVs,
TQDs/TOVs
(1:1)
materials,
respectively.
Effective
separation
electron–hole
pairs
between
QDs
OVs
counterparts
through
decorated
C-dots
by
an
established
S-scheme
system
reason
boosted
activity.
With
regard
to
growth
wheat
lentil
seeds
in
treated
solutions,
it
hoped
that
significant
stability
could
be
clean
up
wastewaters.
The
application
of
optoelectronic
nanomaterials
in
biosensing
has
become
a
hot
area
current
research.
Photoelectrochemical
have
unique
optical,
electrical,
and
chemical
properties
that
give
them
great
potential
the
design
biosensors.
This
paper
reviews
applications
photoelectric
biosensing.
First,
two
core
components
photoelectrochemical
biosensors
(photoelectrochemical
biorecognition
elements)
are
introduced,
different
types
nanomaterials,
such
as
inorganic,
organic,
composite
materials,
well
common
classifications
elements
discussed.
factors
influencing
photocurrent
signals,
signal
amplification,
bursting
strategies
then
In
addition,
four
field
bioanalysis
presented,
including
direct
detection,
enzyme
nucleic
acid
immunoassay.
Finally,
challenges
clinical
summarized.
is
expected
to
provide
more
sensitive
selective
detection
means
for
life
science
research
diagnosis
promote
further
development
technology.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 20, 2025
Abstract
Designing
cost‐effective
electrocatalysts
with
fast
reaction
kinetics
and
high
stability
is
an
outstanding
challenge
in
green
hydrogen
generation
through
overall
water
splitting
(OWS).
Layered
double
hydroxide
(LDH)
heterostructure
materials
are
promising
candidates
to
catalyze
both
oxygen
evolution
(OER)
(HER),
the
two
OWS
half‐cell
reactions.
This
work
develops
a
facile
hydrothermal
route
synthesiz
hierarchical
MoS
2
@NiFeCo‐LDH
@NiFeCo‐Mo(doped)‐LDH
electrocatalysts,
which
exhibit
extremely
good
OER
HER
performance
as
witnessed
by
their
low
IR‐corrected
overpotentials
of
156
61
mV
at
current
density
10
mA
cm
−2
under
light
assistance.
The
@NiFeCo‐Mo(doped)‐LDH‐MoS
cell
achieves
voltage
1.46V
during
light‐assisted
electrolysis.
Both
exhibited
exceptional
industrially
relevant
conditions,
maintaining
1
A
minimal
alterations
potential
performance.
experimental
computational
results
demonstrate
that
doping
LDH
matrix
high‐valence
Mo
atoms
quantum
dots
improves
electrocatalytic
activity
1)
enhancing
electron
transfer,
2)
making
electrocatalyst
metallic,
3)
increasing
number
active
sites,
4)
lowering
thermodynamic
overpotential,
5)
changing
mechanism.
Overall,
this
synthesis
method
design
highly
stable
electrocatalysts.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(19)
Published: April 23, 2023
Lithium-sulfur
(Li-S)
batteries
have
emerged
as
one
of
the
most
attractive
alternatives
for
post-lithium-ion
battery
energy
storage
systems,
owing
to
their
ultrahigh
theoretical
density.
However,
large-scale
application
Li-S
remains
enormously
problematic
because
poor
cycling
life
and
safety
problems,
induced
by
low
conductivity
,
severe
shuttling
effect,
reaction
kinetics,
lithium
dendrite
formation.
In
recent
studies,
catalytic
techniques
are
reported
promote
commercial
batteries.
Compared
with
conventional
sites
on
host
materials,
quantum
dots
(QDs)
ultrafine
particle
size
(<10
nm)
can
provide
large
accessible
surface
area
strong
polarity
restrict
excellent
effect
enhance
kinetics
redox
reactions,
well
abundant
lithiophilic
nucleation
regulate
Li
deposition.
this
review,
intrinsic
hurdles
S
conversion
stripping/plating
reactions
first
summarized.
More
importantly,
a
comprehensive
overview
is
provided
inorganic
QDs,
in
improving
efficiency
stability
batteries,
strategies
including
composition
optimization,
defect
morphological
engineering,
design
heterostructures,
so
forth.
Finally,
prospects
challenges
QDs
discussed.
