ACS Applied Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 28, 2024
Conversion
of
sunlight
to
a
chemical
fuel
through
photoelectrochemical
(PEC)
water
splitting
is
deemed
be
promising
solution
satisfy
future
energy
needs.
In
this
study,
photoanode
based
on
the
triple
heterojunction
MoS2/graphene
quantum
dots/ZnO
nanorods
(MoS2/GQD/ZnO)
was
prepared
compare
its
PEC
performance
with
well-studied
two
component
counterparts
and
pristine
ZnO.
hybrid
configuration,
ZnO
mainly
act
as
scaffold
for
further
deposition
steps,
GQDs
charge
transport
layer,
MoS2
nanoparticles
visible
light
absorber.
After
addition
electrophoretic
deposition,
suitable
band
alignment
between
these
materials
along
formation
type-II
junction
each
parts
highly
facilitates
separation
increases
carrier
density.
Although
GQD/ZnO
MoS2/ZnO
exhibit
superior
compared
bare
ZnO,
structure
outperforms
former
photoanodes
in
terms
overpotential
kinetics.
Consequently,
MoS2/GQD/ZnO
represented
highest
efficiency
generated
4.36
mA/cm2
photocurrent
density,
which
4.1
1.3
times
higher
than
that
(1.07
mA/cm2)
(3.66
photoanodes,
respectively.
