The Journal of Physical Chemistry C,
Journal Year:
2024,
Volume and Issue:
128(36), P. 15000 - 15011
Published: Aug. 29, 2024
Semiconductor
heterojunctions
could
accelerate
carrier
separation
and
transfer
for
improving
light-to-hydrogen
(LTH)
conversion
efficiency.
However,
the
lack
of
tight
efficient
interfacial
charge
cross
in
three-dimensional
semiconductor-based
limits
their
practical
application
relevant
profound
understanding
delivery.
In
this
work,
porphyrin
(Cu)-based
COF
with
a
highly
conjugated
structure
was
deposited
onto
(3D)
ZnIn2S4
by
facile
solvothermal
method
to
prepare
3D/2D
ZnIn2S4@CuP–Ph
heterojunction.
The
content-optimized
composite
showed
an
excellent
LTH
rate
up
2667.94
μmol
g–1
h–1,
about
13.5
times
higher
than
that
pristine
ZnIn2S4.
significantly
meliorated
photocatalytic
performance
is
attributed
synergistically
functioning
contributors,
is,
fast
augmented
light
capturing
capability
after
integration.
Also,
work
function
results
DFT
calculation
reveals
electrons
CuP–Ph
(Φ
=
4.41
eV)
from
interface
electron
delivery
channels
two
components
ZIS
7.03
until
Fermi
level
reaches
equilibrium.
This
moment,
6.50
lies
between
components,
accumulation
region
formed
on
side
ZIS.
Additionally,
free-energy
barriers
hydrogen
evolution
dominated
(0.0955
much
lower
(0.1256
eV).
study
possesses
certain
guiding
significance
design
organic–inorganic
heterojunction
photocatalysts
conversion.
