Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Sept. 28, 2022
Efficient
water
vapor
splitting
opens
a
new
strategy
to
develop
scalable
and
corrosion-free
solar-energy-harvesting
systems.
This
study
demonstrates
highly
efficient
overall
under
feeding
using
Al-doped
SrTiO3
(SrTiO3:Al)-based
photocatalyst
decorated
homogeneously
with
nano-membrane
TiOx
or
TaOx
thin
layers
(<3
nm).
Here,
we
show
the
hygroscopic
nature
of
metal
(hydr)oxide
layer
provides
liquid
reaction
environment
vapor,
thus
achieving
an
AQY
54
±
4%,
which
is
comparable
reaction.
coated,
CoOOH/Rh
loaded
SrTiO3:Al
works
for
over
100
h,
high
pressure
(0.3
MPa),
no
problems
simulated
seawater
as
supply
source.
concept
innovative
high-pressure-tolerant
photoreactor
may
have
value
large-scale
applications.
It
allows
uniform
distribution
reactant
into
reactor
system
without
potential
risk
removing
powders
eluting
some
dissolved
ions
from
reactor.
Chemical Reviews,
Journal Year:
2019,
Volume and Issue:
120(2), P. 919 - 985
Published: Aug. 8, 2019
Solar-driven
water
splitting
provides
a
leading
approach
to
store
the
abundant
yet
intermittent
solar
energy
and
produce
hydrogen
as
clean
sustainable
carrier.
A
straightforward
route
light-driven
is
apply
self-supported
particulate
photocatalysts,
which
expected
allow
be
competitive
with
fossil-fuel-derived
on
levelized
cost
basis.
More
importantly,
powder-based
systems
can
lend
themselves
making
functional
panels
large
scale
while
retaining
intrinsic
activity
of
photocatalyst.
However,
all
attempts
generate
via
water-splitting
date
have
unfortunately
fallen
short
efficiency
values
required
for
practical
applications.
Photocatalysis
photocatalyst
particles
involves
three
sequential
steps:
(i)
absorption
photons
higher
energies
than
bandgap
excitation
electron-hole
pairs
in
particles,
(ii)
charge
separation
migration
these
photoexcited
carriers,
(iii)
surface
chemical
reactions
based
carriers.
In
this
review,
we
focus
challenges
each
step
summarize
material
design
strategies
overcome
obstacles
limitations.
This
review
illustrates
that
it
possible
employ
fundamental
principles
underlying
photosynthesis
tools
materials
science
prepare
photocatalysts
overall
splitting.
