Catalysts,
Год журнала:
2024,
Номер
14(12), С. 901 - 901
Опубликована: Дек. 9, 2024
Cobalt
ferrite
(CoFe2O4)
combined
with
multi-walled
carbon
nanotubes
(MWCNTs)
is
an
outstanding
material
regarding
photoelectrochemical
water
oxidation
(PEC-WO)
because
of
its
excellent
catalytic
properties
and
stability.
On
the
other
hand,
surface
imperfections
in
CoFe2O4
can
cause
band
bending
Fermi
level
pinning,
significantly
reducing
PEC
conversion
efficiency.
Heterostructure
engineering
essential
for
achieving
increased
light-gathering
capacity
charge
separation
efficiency
PEC-WO.
In
this
study,
a
quaternary
heterostructure
CoFe2O4/MWCNT-doped
Metal–Organic
Framework-100
(Iron),
MIL-100(Fe)/Titanium
Oxide
(TiO2)
was
synthesized
by
using
combination
hydrothermal,
solvothermal,
“dip
dry”
techniques.
Characterization
results
confirmed
formation
structural
network
MIL-100(Fe)
on
TiO2
surfaces,
enhanced
incorporation
MWCNTs
during
hydrothermal
reaction.
Under
1
sun
irradiation,
resultant
displayed
photocurrent
density
(Jph)
3.70
mA
cm−2
under
free
bias
voltage,
which
around
3.08
times
more
than
that
pristine
photoanodes
(Jph
=
1.20
cm−2).
This
investigation
highlights
advantages
improving
solar
PEC-WO
performance
photoanodes.
Journal of Composites Science,
Год журнала:
2025,
Номер
9(5), С. 250 - 250
Опубликована: Май 17, 2025
NiFe2O4
and
TiO2
are
widely
studied
for
photoelectrochemical
(PEC)
applications
due
to
their
unique
properties.
Nitrogen-doped
graphene
(NG)
metal–organic
frameworks
(MOFs),
such
as
MIL-100(Fe)
(where
MIL
stands
Materials
of
Lavoisier
Institute),
commonly
incorporated
enhance
PEC
performance
by
offering
a
high
surface
area
facilitating
efficient
charge
transport.
Composite
systems
employed
overcome
the
limitations
individual
catalysts.
In
this
study,
highly
NiFe2O4/NG@MIL-100(Fe)/TiO2
photoanode
was
developed
water-splitting
performance.
The
composite
synthesized
via
hydrothermal
method
with
two-step
heating
process.
X-ray
diffraction
confirmed
expected
crystal
structures,
peak
broadening
in
indicating
reduced
crystallite
size
increased
lattice
strain.
photoelectron
spectroscopy
Ni
2p
Fe
regions
validated
successful
integration
into
composite.
Electrochemical
analysis
demonstrated
excellent
performance,
linear
sweep
voltammetry
achieving
photocurrent
density
3.5
mA
cm−2
at
1.23
V
(vs
RHE).
impedance
revealed
charge-transfer
resistance
50
Ω,
improved
Optical
electronic
properties
were
evaluated
using
UV-Vis
Tauc
plots,
revealing
direct
bandgap
2.1
eV.
exhibited
stable
under
amperometric
J-t
testing
2000
s,
demonstrating
its
durability.
These
findings
underscore
potential
promising
material
renewable
energy
applications,
particularly
water
splitting.
Nano Biomedicine and Engineering,
Год журнала:
2024,
Номер
16(3), С. 402 - 415
Опубликована: Июль 2, 2024
Quercetin
is
a
biologically
active
and
widely
used
dietary
flavonoid
with
robust
antioxidant
chelating
effects.
However,
due
to
its
lesser
solubility,
it
has
poor
bioavailability,
which
results
in
limited
medicinal
This
study
synthesized
quercetin–metal
complexes,
enhanced
the
properties
bioavailability
of
quercetin.
Quercetin–copper
(Cu)
complexes
were
fabricated
by
using
copper
sulfate
chloride
Quercetin/Cu
ratios
1:2
1:1,
respectively.
Furthermore,
Cu
quercetin
extracted
from
onion
peels
or
standard
obtained.
The
current
research
also
sought
assess
as
well
antibacterial
properties.
Spectrophotometry
revealed
that
better
prepared
ratio
compared
1:1.
Copper
showed
no
significant
(p
<
0.05)
effects
on
complex
formation.
These
metal
had
considerable
impact
Bacillus
subtilis
(Gram+)
Escherichia
coli
(Gram–).
pharmacokinetic
parameters
indicated
oral
quercetin–Cu(II)
was
significantly
pure
this
suggested
successful
formation
markedly
increased
bio-availability
Catalysts,
Год журнала:
2024,
Номер
14(12), С. 901 - 901
Опубликована: Дек. 9, 2024
Cobalt
ferrite
(CoFe2O4)
combined
with
multi-walled
carbon
nanotubes
(MWCNTs)
is
an
outstanding
material
regarding
photoelectrochemical
water
oxidation
(PEC-WO)
because
of
its
excellent
catalytic
properties
and
stability.
On
the
other
hand,
surface
imperfections
in
CoFe2O4
can
cause
band
bending
Fermi
level
pinning,
significantly
reducing
PEC
conversion
efficiency.
Heterostructure
engineering
essential
for
achieving
increased
light-gathering
capacity
charge
separation
efficiency
PEC-WO.
In
this
study,
a
quaternary
heterostructure
CoFe2O4/MWCNT-doped
Metal–Organic
Framework-100
(Iron),
MIL-100(Fe)/Titanium
Oxide
(TiO2)
was
synthesized
by
using
combination
hydrothermal,
solvothermal,
“dip
dry”
techniques.
Characterization
results
confirmed
formation
structural
network
MIL-100(Fe)
on
TiO2
surfaces,
enhanced
incorporation
MWCNTs
during
hydrothermal
reaction.
Under
1
sun
irradiation,
resultant
displayed
photocurrent
density
(Jph)
3.70
mA
cm−2
under
free
bias
voltage,
which
around
3.08
times
more
than
that
pristine
photoanodes
(Jph
=
1.20
cm−2).
This
investigation
highlights
advantages
improving
solar
PEC-WO
performance
photoanodes.
