Fabrication of S‐Scheme GDY‐CuI/ZnWO4 Photocatalyst to Promote Electron Transfer for Enhanced Photocatalytic H2 Evolution
Advanced Sustainable Systems,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 4, 2024
Abstract
The
exceptional
performance
of
graphdiyne
(GDY)
in
photocatalysis
for
hydrogen
evolution
attracts
much
attention,
but
the
narrow
band
gap
GDY
complicates
effective
realization
dissociation
between
photogenerated
charges
and
holes.
In
this
study,
GDY‐CuI
is
synthesized
by
cross‐coupling
method,
wide
bandgap
ZnWO
4
introduced
into
it
low‐temperature
mixing,
which
effectively
constructed
GDY‐CuI/ZW‐50
double
S‐scheme
heterojunction.
optimized
catalyst
photocatalytic
reached
308.61
µmol
after
5
h
visible
light
irradiation,
12.86
6.56
times
than
that
,
respectively.
improved
efficiency
attributed
to
formation
a
heterojunction
GDY,
CuI,
an
internal
electric
field,
promotes
charge
transfer,
reduces
complexation
rate
electrons,
enhances
redox
capacity
charges.
A
combination
photoelectrochemical
analysis,
situ
X‐ray
photoelectron
spectroscopy
(In
XPS),
ultraviolet
(UPS),
density
functional
theory
(DFT)
results
revealed
electron
transfer
mechanism.
This
work
will
provide
new
ideas
design
preparation
GDY‐based
photocatalysts.
Язык: Английский
Polyoxometalate‐Derived Photocatalysts Enabling Progress in Hydrogen Evolution Reactions
Advanced Sustainable Systems,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 29, 2024
Abstract
Photocatalytic
water
splitting
is
capable
of
converting
abundant
solar
energy
into
environmentally
friendly
and
renewable
chemical
energy,
presenting
a
promising
solution
to
alleviate
the
crisis
combat
environmental
pollution.
The
development
high‐performance
photocatalysts
crucial
for
significantly
improving
efficiency
hydrogen
evolution
reaction
(HER)
involved.
Polyoxometalate
(POM)‐derived
materials,
known
their
tunable
compositions,
diverse
structures,
electron
storage/release
capabilities,
as
well
quasi‐semiconductor
photochemical
properties,
serve
highly
efficient
catalysts
in
sustainable
photosynthesis.
This
comprehensive
review
navigates
latest
advancements
assembly
strategies
HER
performance
POM‐based
crystalline
materials.
It
also
discusses
composite
materials
formed
by
infiltrating
POM
metal‐organic
frameworks
(MOF)
examines
roles
transition
metal
compounds
derived
from
polyoxometalates,
such
sulfides
carbides,
photocatalytic
HER.
Emphasis
placed
on
prospects
future
photocatalysts,
along
with
several
outlooks
that
could
facilitate
progress.
POM‐derived
are
believed
have
significant
potential
enhance
production
while
maintaining
thermal
stability
processes.
Язык: Английский