ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
9(4), P. 1932 - 1975
Published: April 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.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: June 5, 2024
Abstract
Constructing
S-scheme
heterojunctions
proves
proficient
in
achieving
the
spatial
separation
of
potent
photogenerated
charge
carriers
for
their
participation
photoreactions.
Nonetheless,
restricted
contact
areas
between
two
phases
within
heterostructures
lead
to
inefficient
interfacial
transport,
resulting
low
photocatalytic
efficiency
from
a
kinetic
perspective.
Here,
In
2
O
3
/Nb
5
are
fabricated
through
straightforward
one-step
electrospinning
technique,
enabling
intimate
and
thereby
fostering
ultrafast
electron
transfer
(<10
ps),
as
analyzed
via
femtosecond
transient
absorption
spectroscopy.
As
result,
powerful
photo-electrons
holes
accumulate
Nb
conduction
band
valence
band,
respectively,
exhibiting
extended
long
lifetimes
facilitating
involvement
subsequent
Combined
with
efficient
chemisorption
activation
stable
CO
on
,
hybrid
nanofibers
demonstrate
improved
performance
conversion.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(11)
Published: Jan. 29, 2023
Abstract
Recent
years
have
witnessed
an
upsurge
of
interest
in
exploiting
advanced
photo‐/electrocatalysts
for
efficient
energy
conversion
and
environmental
remediation.
Constructing
internal
electric
fields
has
been
highlighted
as
a
rising
star
to
help
facilitate
various
catalytic
processes,
with
the
merits
promoting
charge
transfer/separation,
optimizing
redox
potential
creating
effective
active/adsorption
sites.
Internal
are
usually
formed
by
polarization
uneven
distributions
between
different
constituent
layers,
which
widely
exist
piezoelectrics,
polar
surface
terminations,
heterostructure
materials.
Herein,
groundbreaking
interdisciplinary
overview
latest
advances
construction
improve
photo(electro)catalytic
electrocatalytic
activity
is
provided.
This
critical
review
begins
encyclopedic
summary
classification,
advantages,
synthesis
strategies
fields.
Subsequently,
identification
methods
thoroughly
discussed
based
on
characterization
techniques,
experiments,
theoretical
calculations,
can
provide
profound
guidance
in‐depth
study
To
elaborate
theory–structure–activity
relationships
fields,
corresponding
reaction
mechanisms,
modification
strategies,
performance
jointly
discussed,
along
discussion
their
practical
applications.
Finally,
insightful
analysis
challenges
future
prospects
field‐based
catalysts
discussed.
RSC Applied Interfaces,
Journal Year:
2023,
Volume and Issue:
1(1), P. 43 - 69
Published: Sept. 27, 2023
Semiconductor
heterojunctions
are
pivotal
in
determining
the
overall
photocatalytic
efficiency.
This
review
explores
recent
advances
diverse
heterojunction
types,
charge
transfer
mechanisms
and
materials.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(25)
Published: April 20, 2023
Bismuth-based
materials
have
been
recognized
as
promising
catalysts
for
the
electrocatalytic
CO2
reduction
reaction
(ECO2
RR).
However,
they
show
poor
selectivity
due
to
competing
hydrogen
evolution
(HER).
In
this
study,
we
developed
an
edge
defect
modulation
strategy
Bi
by
coordinating
defects
of
bismuth
(Bi)
with
sulfur,
promote
ECO2
RR
and
inhibit
HER.
The
prepared
demonstrate
excellent
product
selectivity,
a
high
HCOO-
Faraday
efficiency
≈95
%
partial
current
≈250
mA
cm-2
under
alkaline
electrolytes.
Density
function
theory
calculations
reveal
that
sulfur
tends
bind
defects,
reducing
coordination-unsaturated
sites
(*H
adsorption
sites),
regulating
charge
states
neighboring
improve
*OCHO
adsorption.
This
work
deepens
our
understanding
mechanism
on
bismuth-based
catalysts,
guiding
design
advanced
catalysts.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(19), P. 12623 - 12633
Published: Sept. 13, 2023
Exploring
photocatalysts
to
promote
the
conversion
of
CO2
valuable
chemical
fuels
is
a
highly
promising
approach
for
mitigating
energy
scarcity
and
environmental
pollution.
Lead-free
perovskite
Cs3Bi2Br9
quantum
dots
(QDs)
have
attracted
considerable
attention
in
photoreduction
due
robust
reduction
capability
controllable
product
selectivity.
Nevertheless,
their
potential
has
been
impeded
by
rapid
recombination
charge
carriers,
leading
unsatisfactory
photocatalytic
efficiency.
Here,
unique
SnO2/Cs3Bi2Br9
S-scheme
heterojunctions
are
constructed
electrostatically
self-assembling
SnO2
nanofibers
with
QDs
enhance
performance.
Density
functional
theory
calculations,
along
experimental
studies,
reveal
that
electrons
transfer
from
SnO2,
creating
directed
interfacial
electric
field
bending
bands
at
interfaces.
This
facilitates
transport
photoelectrons
Cs3Bi2Br9,
forming
enabling
effective
separation
powerful
photoexcited
electron/hole
pairs.
Additionally,
profiting
enhanced
light
absorption
contributed
narrow-bandgap
lower
barrier
CH4
production
over
surface,
heterostructures
unveil
superior
activities
high
selectivity
70%,
without
assistance
any
molecular
catalyst
or
scavenger.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(8), P. 4020 - 4029
Published: Jan. 1, 2023
A
lead-free
perovskite/MOF
catalyst
shows
a
high
CO
selectivity
of
99.5%
for
photocatalytic
2
reduction,
stemming
from
efficient
charge
separation,
formation
*COOH
intermediates,
and
prompt
desorptionof
the
catalyst.
Inorganic Chemistry,
Journal Year:
2023,
Volume and Issue:
62(5), P. 2289 - 2303
Published: Jan. 24, 2023
Given
the
global
warming
caused
by
excess
CO2
accumulation
in
atmosphere,
it
is
essential
to
reduce
capturing
and
converting
chemical
feedstock
using
solar
energy.
Herein,
a
novel
Cs3Bi2Br9/bismuth-based
metal-organic
framework
(Bi-MOF)
composite
was
prepared
via
an
situ
growth
strategy
of
Cs3Bi2Br9
quantum
dots
(QDs)
on
surface
Bi-MOF
nanosheets
through
coshared
bismuth
atoms.
The
Cs3Bi2Br9/Bi-MOF
exhibits
bifunctional
merits
for
both
high
capture
effective
conversion
CO2,
among
which
optimized
3Cs3Bi2Br9/Bi-MOF
sample
shows
CO2-CO
yield
as
572.24
μmol
g-1
h-1
under
irradiation
300
W
Xe
lamp.
In
addition,
good
stability
after
five
recycles
humid
air,
photoreduction
efficiency
does
not
decrease
significantly.
mechanistic
investigation
uncovers
that
intimate
atomic-level
contact
between
atoms
only
improves
dispersion
QDs
over
but
also
accelerates
interfacial
charge
transfer
forming
strong
bonding
linkage,
endows
with
best
performance
photoreduction.
Our
new
finding
bismuth-based
framework/lead-free
halide
perovskite
cosharing
opens
avenue
preparation
heterojunction
potential
applications
photocatalytic
CO2.
