Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(5), С. 3303 - 3314
Опубликована: Янв. 25, 2024
The
ability
to
create
perovskite-based
heterostructures
with
desirable
charge
transfer
characteristics
represents
an
important
endeavor
render
a
set
of
perovskite
materials
and
devices
tunable
optoelectronic
properties.
However,
due
similar
material
selection
band
alignment
in
type-II
Z-scheme
heterostructures,
it
remains
challenging
obtain
favorable
electron
pathway
for
photocatalysis.
Herein,
we
report
robust
tailoring
effective
via
transformation
highly
efficient
selective
photocatalytic
CO2
reduction.
Specifically,
CsPbBr3/TiO2
CsPbBr3/Au/TiO2
are
synthesized
then
investigated
by
ultrafast
spectroscopy.
Moreover,
taking
as
examples,
operando
experiments
theoretical
calculations
confirm
that
the
heterostructure
could
be
readily
transformed
into
through
establishing
low-resistance
Ohmic
contact,
which
indicates
fast
is
crucial
construction,
further
demonstrated
CsPbBr3/Ag/TiO2
CsPbBr3/MoS2
heterostructures.
In
contrast
pristine
CsPbBr3
CsPbBr3/TiO2,
exhibits
5.4-
3.0-fold
enhancement
consumption
rate
DFT
situ
diffuse
reflectance
infrared
Fourier
transform
spectroscopy
unveil
superior
CO
selectivity
attributed
lower
energy
*CO
desorption
than
hydrogenation
*HCO.
This
meticulous
design
sheds
light
on
modification
multifunctional
enlightens
conscious
optimization
semiconductor-based
catalysis
applications.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(21)
Опубликована: Фев. 29, 2024
Abstract
The
development
of
high‐performance
photocatalytic
systems
for
CO
2
reduction
is
appealing
to
address
energy
and
environmental
issues,
while
it
challenging
avoid
using
toxic
metals
organic
sacrificial
reagents.
We
here
immobilize
a
family
cobalt
phthalocyanine
catalysts
on
Pb‐free
halide
perovskite
Cs
AgBiBr
6
nanosheets
with
delicate
control
the
anchors
catalysts.
Among
them,
molecular
hybrid
photocatalyst
assembled
by
carboxyl
achieves
optimal
performance
an
electron
consumption
rate
300±13
μmol
g
−1
h
visible‐light‐driven
‐to‐CO
conversion
coupled
water
oxidation
O
,
over
8
times
unmodified
(36±8
),
also
far
surpassing
documented
(<150
).
Besides
improved
intrinsic
activity,
electrochemical,
computational,
ex‐/in
situ
X‐ray
photoelectron
absorption
spectroscopic
results
indicate
that
electrons
photogenerated
at
Bi
atoms
can
be
directionally
transferred
catalyst
via
which
strongly
bind
atoms,
substantially
facilitating
interfacial
transfer
kinetics
thereby
photocatalysis.
Abstract
Metal
halide
perovskite
quantum
dots
(QDs)
are
widely
studied
in
the
field
of
photocatalytic
CO
2
due
to
their
strong
light
absorption
and
long
carrier
migration
length.
However,
it
can
not
exhibit
high
catalytic
performance
because
radiative
recombination
lack
effective
sites.
organic
frameworks
(MOFs)
encapsulated
QDs
only
solve
aforementioned
problems,
but
also
maintain
own
unique
characteristics
with
ultra‐high
specific
surfaces
area
abundant
metal
In
this
work,
lead‐free
bismuth‐based
into
Zr‐based
MOF
(UiO‐66),
which
combines
advantages
power
conversion
efficiency
surface
porosity
UiO‐66.
addition,
benefiting
from
close
contact
between
Cs
3
Bi
Br
9
UiO‐66
enables
photogenerated
electrons
be
rapidly
transferred
MOF.
As
a
result,
@UiO‐66
composite
exhibits
higher
yield
for
reduction
than
that
prepared
large‐sized
ACS Energy Letters,
Год журнала:
2024,
Номер
9(4), С. 1932 - 1975
Опубликована: Апрель 4, 2024
Carbon
dioxide
(CO2),
an
archetypal
greenhouse
gas,
can
be
transformed
into
valuable
fuels
through
photocatalysis,
presenting
auspicious
avenue
for
combating
global
climate
change
and
energy
crisis.
While
halide
perovskites
have
sparked
substantial
research
interest,
concerns
over
lead
toxicity
spurred
exploration
of
their
lead-free
counterparts
CO2
photoreduction.
This
comprehensive
Review
navigates
the
fundamentals
reduction,
delving
basic
principles,
mechanisms,
relevant
operando
techniques.
It
then
introduces
diverse
structures
(LFHPs),
synthesis
methodologies,
intrinsic
properties
that
render
them
suitable
Subsequently,
unfolds
application
modification
strategies
light-driven
conversion,
highlighting
breakthroughs
shedding
light
on
potential
mechanisms.
Finally,
current
challenges
to
tailor
LFHPs
robust
photocatalytic
reduction
are
critically
discussed,
offering
insights
future
in
this
realm.
aims
illuminate
path
toward
sustainable
bridging
knowledge
gaps
inspiring
innovations
a
greener
carbon-neutral
tomorrow.
Catalysis Science & Technology,
Год журнала:
2024,
Номер
14(6), С. 1387 - 1427
Опубликована: Янв. 1, 2024
Designing
robust
hybrid/bifunctional
catalysts
for
CO
2
to
DME
is
of
increasing
importance
in
energy
and
environmental
science
simultaneously
address
two
important
global
challenges:
carbon
emission
reduction
alternative
fuel
development.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(46)
Опубликована: Окт. 27, 2023
Abstract
Buckminsterfullerene
(C
60
)
and
derivatives
are
significant
in
the
synthesis
of
efficient
electrocatalysts
photocatalysts.
This
is
because
electron
acceptor
properties
distinctive
heterostructure(s)
physicochemical
characteristics.
High‐performance
photocatalysts
important
therefore
conversions
for
clean
energy.
Here
a
critical
assessment
advances
use
C
as
heterostructures
“electron
buffers”
catalysts
reported.
Methodologies
preparing
composite
assessed
categorized
microscopic
mechanisms
boosting
catalytic
performance
through
materials
including,
semiconductors,
carbon‐based
metal‐free
materials,
metal
nanoclusters,
single
atoms,
metal–organic
skeletons
established.
Important
characterizations
used
with
derivative
composites
contrasted
practical
challenges
to
development
determined.
A
prospective
on
future
directions
likely
outcomes
high
efficiency
provided.
It
concluded
that
advantageous
advanced
structural
integrity
boosted
transport.
The
findings
expected
be
interest
benefit
researchers
manufacturers
formation
buffer
areas
significantly
performance.
