Angewandte Chemie International Edition,
Journal Year:
2019,
Volume and Issue:
58(34), P. 11791 - 11795
Published: June 26, 2019
Abstract
Black
phosphorus
(BP)
has
recently
drawn
attention
in
photocatalysis
for
its
optical
properties.
However,
limited
by
the
rapid
recombination
of
photogenerated
carriers,
use
BP
photocatalytic
water
splitting
still
remains
a
huge
challenge.
Herein,
we
prepare
black/red
(BP/RP)
hetero‐phase
junction
photocatalyst
wet‐chemistry
method
to
promote
interfacial
charge
separation
and
thus
achieve
Z‐scheme
without
using
sacrificial
agents.
The
mechanism
was
confirmed
time‐resolved
transient
absorption
spectroscopy.
This
work
provides
novel
insight
into
interface
design
with
atomic
precision.
Nature Communications,
Journal Year:
2020,
Volume and Issue:
11(1)
Published: Sept. 14, 2020
Abstract
Exploring
photocatalysts
to
promote
CO
2
photoreduction
into
solar
fuels
is
of
great
significance.
We
develop
TiO
/perovskite
(CsPbBr
3
)
S-scheme
heterojunctions
synthesized
by
a
facile
electrostatic-driven
self-assembling
approach.
Density
functional
theory
calculation
combined
with
experimental
studies
proves
the
electron
transfer
from
CsPbBr
quantum
dots
(QDs)
,
resulting
in
construction
internal
electric
field
(IEF)
directing
upon
hybridization.
The
IEF
drives
photoexcited
electrons
light
irradiation
as
revealed
in-situ
X-ray
photoelectron
spectroscopy
analysis,
suggesting
formation
an
heterojunction
/CsPbBr
nanohybrids
which
greatly
promotes
separation
electron-hole
pairs
foster
efficient
photoreduction.
hybrid
nanofibers
unveil
higher
-reduction
rate
(9.02
μmol
g
–1
h
comparing
pristine
(4.68
).
Isotope
(
13
tracer
results
confirm
that
reduction
products
originate
source.
Angewandte Chemie International Edition,
Journal Year:
2020,
Volume and Issue:
59(13), P. 5218 - 5225
Published: Jan. 15, 2020
Abstract
Constructing
heterojunctions
between
two
semiconductors
with
matched
band
structure
is
an
effective
strategy
to
acquire
high‐efficiency
photocatalysts.
The
S‐scheme
heterojunction
system
has
shown
great
potential
in
facilitating
separation
and
transfer
of
photogenerated
carriers,
as
well
acquiring
strong
photoredox
ability.
Herein,
a
0D/2D
S‐Scheme
material
involving
CeO
2
quantum
dots
polymeric
carbon
nitride
(CeO
/PCN)
designed
constructed
by
situ
wet
chemistry
subsequent
heat
treatment.
This
shows
photocatalytic
sterilization
rate
(88.1
%)
towards
Staphylococcus
aureus
(S.
aureus)
under
visible‐light
irradiation
(
λ
≥420
nm),
which
2.7
8.2
times
that
pure
(32.2
PCN
(10.7
%),
respectively.
Strong
evidence
charge
path
verified
theoretical
calculations,
irradiated
X‐ray
photoelectron
spectroscopy,
electron
paramagnetic
resonance.
Chemical Society Reviews,
Journal Year:
2020,
Volume and Issue:
49(12), P. 4135 - 4165
Published: Jan. 1, 2020
In
the
light
of
increasing
energy
demand
and
environmental
pollution,
it
is
urgently
required
to
find
a
clean
renewable
source.
these
years,
photocatalysis
that
uses
solar
for
either
fuel
production,
such
as
hydrogen
evolution
hydrocarbon
or
pollutant
degradation,
has
shown
great
potential
achieve
this
goal.
Among
various
photocatalysts,
covalent
organic
frameworks
(COFs)
are
very
attractive
due
their
excellent
structural
regularity,
robust
framework,
inherent
porosity
good
activity.
Thus,
many
studies
have
been
carried
out
investigate
photocatalytic
performance
COFs
COF-based
photocatalysts.
critical
review,
recent
progress
advances
COF
photocatalysts
thoroughly
presented.
Furthermore,
diverse
linkers
between
building
blocks
boron-containing
connections
nitrogen-containing
summarised
compared.
The
morphologies
several
commonly
used
strategies
pertaining
activity
also
discussed.
Following
this,
applications
detailed
including
evolution,
CO2
conversion
degradation
contaminants.
Finally,
summary
perspective
on
opportunities
challenges
future
development
given.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(22)
Published: April 26, 2021
Abstract
Inspired
by
natural
photosynthesis,
constructing
inorganic/organic
heterojunctions
is
regarded
as
an
effective
strategy
to
design
high‐efficiency
photocatalysts.
Herein,
a
step
(S)‐scheme
heterojunction
photocatalyst
prepared
in
situ
growth
of
inorganic
semiconductor
firmly
on
organic
semiconductor.
A
new
pyrene‐based
conjugated
polymer,
pyrene‐
alt
‐triphenylamine
(PT),
synthesized
via
the
typical
Suzuki–Miyaura
reactions,
and
then
employed
substrate
anchor
CdS
nanocrystals.
The
optimized
CdS/PT
composite,
coupling
2
wt%
PT
with
CdS,
exhibits
robust
H
evolution
rate
9.28
mmol
h
−1
g
continuous
release
bubbles,
well
high
apparent
quantum
efficiency
24.3%,
which
≈8
times
that
pure
CdS.
S‐scheme
charge
transfer
mechanism
between
systematically
demonstrated
photoirradiated
Kelvin
probe
measurement
irradiated
X‐ray
photoelectron
spectroscopy
analyses.
This
work
provides
protocol
for
preparing
specific
photocatalysts
basis
coupling.
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.
