As
an
important
compound
in
various
industries
and
metabolic
processes
the
human
body,
high
concentrations
of
hydrogen
peroxide
(H2O2)
can
cause
serious
injuries
to
humans
other
organisms.
Thus,
it
is
great
significance
develop
a
rapid,
sensitive,
practical
method
for
detection
H2O2.
Herein,
carbon
quantum
dot-mediated
CoAl-layered
double
hydroxide
(CQDs/CoAl-LDH)
was
decorated
on
hematite
(α-Fe2O3)
photoelectrode
via
simple
one-pot
hydrothermal
method.
The
resultant
CQDs/CoAl-LDH/α-Fe2O3
exhibited
excellent
photoelectrochemical
(PEC)
sensing
toward
H2O2
with
sensitivities
92.10
39.27
μA
mM–1
cm–2
linear
range
0.001–0.9
0.9–2
mM,
respectively,
low
limit
(0.02
μM,
S/N
=
3)
at
0
V
vs
SCE,
as
well
good
selectivity,
stability,
reproducibility,
reliability.
investigation
mechanism
revealed
that
CQDs
could
not
only
mediate
growth
CoAl-LDH
expose
active
sites
but
also
improve
electroconductivity
facilitate
charge
transfer,
while
rapidly
extract
photogenerated
holes
separation
provide
catalytic
oxidation.
synergistic
effect
significantly
boosted
PEC
activity
α-Fe2O3
strategy
boosting
performance
importance
semiconductor
photoelectrodes.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
The
specific
capacitance
of
NCA
15
-MOF/NF
was
1317
F
g
−1
,
which
significantly
higher
compared
to
the
0
-MOF/NF.
After
000
charge–discharge
cycles,
retained
89%
its
initial
capacitance.
Materials Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
8(20), P. 3280 - 3289
Published: Jan. 1, 2024
QDs-Co
9
S
8
/CoNi-LDH
was
assembled
by
selective
sulfurization
derived
from
2D
MOF
with
the
loading
of
Co
quantum
dots
into
layered
double
hydroxides.
The
constructed
hybrid
supercapacitor
shown
energy
density
33.3
Wh
kg
−1
at
820.0
W
.
As
an
important
compound
in
various
industries
and
metabolic
processes
the
human
body,
high
concentrations
of
hydrogen
peroxide
(H2O2)
can
cause
serious
injuries
to
humans
other
organisms.
Thus,
it
is
great
significance
develop
a
rapid,
sensitive,
practical
method
for
detection
H2O2.
Herein,
carbon
quantum
dot-mediated
CoAl-layered
double
hydroxide
(CQDs/CoAl-LDH)
was
decorated
on
hematite
(α-Fe2O3)
photoelectrode
via
simple
one-pot
hydrothermal
method.
The
resultant
CQDs/CoAl-LDH/α-Fe2O3
exhibited
excellent
photoelectrochemical
(PEC)
sensing
toward
H2O2
with
sensitivities
92.10
39.27
μA
mM–1
cm–2
linear
range
0.001–0.9
0.9–2
mM,
respectively,
low
limit
(0.02
μM,
S/N
=
3)
at
0
V
vs
SCE,
as
well
good
selectivity,
stability,
reproducibility,
reliability.
investigation
mechanism
revealed
that
CQDs
could
not
only
mediate
growth
CoAl-LDH
expose
active
sites
but
also
improve
electroconductivity
facilitate
charge
transfer,
while
rapidly
extract
photogenerated
holes
separation
provide
catalytic
oxidation.
synergistic
effect
significantly
boosted
PEC
activity
α-Fe2O3
strategy
boosting
performance
importance
semiconductor
photoelectrodes.
