Advanced Materials,
Journal Year:
2021,
Volume and Issue:
34(11)
Published: Dec. 28, 2021
Photocatalysis
is
a
green
technology
to
use
ubiquitous
and
intermittent
sunlight.
The
emerging
S-scheme
heterojunction
has
demonstrated
its
superiority
in
photocatalysis.
This
article
covers
the
state-of-the-art
progress
provides
new
insights
into
general
designing
criteria.
It
starts
with
challenges
confronted
by
single
photocatalyst
from
perspective
of
energy
dissipation
borrowing
common
behaviors
dye
molecule.
Subsequently,
other
problems
faced
are
summarized.
Then
viable
solution
for
these
construction
heterojunctions.
To
overcome
mistakes
type-II
Z-scheme
heterojunctions,
proposed
underlying
reaction
mechanism
Afterward,
design
principles
four
types
heterojunctions
suggested.
Following
this,
direct
characterization
techniques
testifying
charge
transfer
presented.
Finally,
different
photocatalytic
applications
Specifically,
this
work
endeavors
clarify
critical
understanding
on
curved
Fermi
level
interface,
which
can
help
strengthen
advance
fundamental
theories
Moreover,
current
prospects
critically
discussed.
Small,
Journal Year:
2021,
Volume and Issue:
17(41)
Published: Sept. 12, 2021
Reasonable
design
of
efficient
hierarchical
photocatalysts
has
gained
significant
attention.
Herein,
a
step-scheme
(S-scheme)
core-shell
TiO2
@ZnIn2
S4
heterojunction
is
designed
for
photocatalytic
CO2
reduction.
The
optimized
sample
exhibits
much
higher
photoreduction
conversion
rates
(the
sum
yield
CO,
CH3
OH,
and
CH4
)
than
the
blank
control,
i.e.,
ZnIn2
.
improved
performance
can
be
attributed
to
inhibited
recombination
photogenerated
charge
carriers
induced
by
S-scheme
heterojunction.
improvement
also
large
specific
surface
areas
abundant
active
sites.
Meanwhile,
transfer
mechanism
testified
in
situ
irradiated
X-ray
photoelectron
spectroscopy,
work
function
calculation,
electron
paramagnetic
resonance
measurements.
This
provides
an
effective
strategy
designing
highly
solar
fuels.
Small,
Journal Year:
2021,
Volume and Issue:
18(8)
Published: Oct. 29, 2021
Abstract
Hydrogen
peroxide
(H
2
O
)
is
a
mild
but
versatile
oxidizing
agent
with
extensive
applications
in
bleaching,
wastewater
purification,
medical
treatment,
and
chemical
synthesis.
The
state‐of‐art
H
production
via
anthraquinone
oxidation
hardly
considered
cost‐efficient
environment‐friendly
process
because
it
requires
high
energy
input
generates
hazardous
organic
wastes.
Photocatalytic
green,
sustainable,
inexpensive
which
only
needs
water
gaseous
dioxygen
as
the
raw
materials
sunlight
power
source.
Inorganic
metal
oxide
semiconductors
are
good
candidates
for
photocatalytic
due
to
their
abundance
nature,
biocompatibility,
exceptional
stability,
low
cost.
Progress
has
been
made
enhance
activity
toward
production,
however,
photosynthesis
still
laboratory
research
phase
since
productivity
far
from
satisfaction.
To
inspire
innovative
ideas
boosting
yield
photocatalysis,
most
well‐studied
photocatalysts
selected
modification
strategies
improve
listed.
mechanisms
over
modified
discussed
highlight
facilitating
role
of
methods.
Besides,
methods
quantification
associated
radical
intermediates
provided
guide
future
studies
this
field.
