Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(46)
Published: Aug. 1, 2024
Abstract
Product
selectivity
of
solar‐driven
CO
2
reduction
and
H
O
oxidation
reactions
has
been
successfully
controlled
by
tuning
the
spatial
distance
between
Pt/Au
bimetallic
active
sites
on
different
crystal
facets
CeO
catalysts.
The
replacement
depth
Ce
atoms
monatomic
Pt
determines
sites,
while
Au
clusters
are
deposited
surface.
This
space
configuration
creates
a
favourable
microenvironment
for
migration
hydrogen
species
(*H).
*H
is
generated
via
activation
migrate
towards
with
strong
capacity
adsorption.
Under
concentrated
solar
irradiation,
(100)
facet
100
%,
(110)
(111)
CH
4
33.5
%
97.6
respectively.
Notably,
yield
as
high
369.4
μmol/g/h,
solar‐to‐chemical
energy
efficiency
0.23
33.8
times
higher
than
that
under
non‐concentrated
irradiation.
impacts
high‐density
flux
photon
thermal
effects
carriers
at
microscale
comprehensively
discussed.
study
provides
new
avenue
to
achieve
optimal
product
selectivity.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(34)
Published: April 24, 2023
Abstract
Intensifying
energy
crises
and
severe
environmental
issues
have
led
to
the
discovery
of
renewable
sources,
sustainable
conversion,
storage
technologies.
Photocatalysis
is
a
green
technology
that
converts
eco‐friendly
solar
into
high‐energy
chemicals.
Covalent
organic
frameworks
(COFs)
are
porous
materials
constructed
by
covalent
bonds
show
promising
potential
for
converting
chemicals
owing
their
pre‐designable
structures,
high
crystallinity,
porosity.
Herein,
we
highlight
recent
progress
in
synthesis
COF‐based
photocatalysts
applications
water
splitting,
CO
2
reduction,
H
O
production.
The
challenges
future
opportunities
rational
design
COFs
advanced
discussed.
This
Review
expected
promote
further
development
toward
photocatalysis.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 10, 2024
Abstract
Covalent
organic
frameworks
(COFs)
attract
significant
attention
due
to
their
ordered,
crystalline,
porous,
metal‐free,
and
predictable
structures.
These
unique
characteristics
offer
great
opportunities
for
the
diffusion
transmission
of
photogenerated
charges
during
photocatalysis.
Currently,
a
considerable
number
COFs
are
used
as
metal‐free
semiconductor
photocatalysts.
This
review
aims
understand
relationships
between
structure
photocatalysis
performance
provides
in‐depth
insight
into
synthetic
strategy
improve
performance.
Subsequently,
focuses
on
structural
motif
in
sustainable
photocatalytic
hydrogen
evolution,
carbon
dioxide
reduction,
peroxide
generation,
compound
transformations.
Last,
conjunction
with
progress
achieved
challenges
yet
be
overcome,
candid
discussion
is
undertaken
regarding
field
COF
photocatalysis,
accompanied
by
presentation
potential
research
avenues
future
directions.
seeks
provide
readers
comprehensive
understanding
pivotal
role
robust
guidance
innovative
utilization
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(3), P. 1468 - 1479
Published: Jan. 13, 2024
Doping
engineering
has
enabled
the
construction
of
homogeneous
and
abundant
atomic-level
catalytic
sites
for
photocatalytic
CO2
reduction
with
improved
selectivity
target
product.
However,
little
is
known
about
effect
spatial
position
heteroatoms
on
activity
semiconductors
toward
reduction.
Herein,
uniform
Cu
doping
into
bulk
phase
hollow
CdS
cubes
(HCC)
onto
surface
HCC,
denoted
as
Cu/HCC
HCC@Cu,
respectively,
are
prepared
by
tuning
introduction
order
sources.
Experimental
analysis
shows
that
both
methods
can
promote
separation
migration
photoinduced
charge
carriers
in
CdS.
Notably,
HCC@Cu
leads
to
much
better
proton
H2
production
performance
but
lower
efficiency
compared
bare
In
sharp
contrast,
enhances
CO2-to-CO
conversion
while
mitigating
evolution.
This
should
be
ascribed
smaller
overpotential
saturated
system
than
Ar
system.
addition,
atoms
shifts
d
band
center
upward
near
Fermi
energy
level,
which
promotes
adsorption
activation
These
results
indicate
photoelectrons
a
prolonged
lifetime
preferably
reduce
molecules
rather
protons.
The
density
functional
theory
(DFT)
calculation
show
desorption
CO*,
adaptable
sulfur
vacancies
(Vs)
produced
situ
techniques
stimulate
formation
CO*
intermediates,
resulting
high
CO.
work
reveals
different
heteroatom
locations
will
provide
reference
design
efficient
photocatalysts
fine
structure.
Journal of CO2 Utilization,
Journal Year:
2024,
Volume and Issue:
80, P. 102682 - 102682
Published: Jan. 23, 2024
Climate
change,
which
is
caused
by
increasing
greenhouse
gas
(GHG)
emissions,
poses
a
serious
threat
to
humanity,
impacting
economies,
societies,
and
the
environment.
Carbon
dioxide
(CO2),
major
contributor
effect,
responsible
for
climate
change
thus
must
be
reduced.
capture,
conversion,
storage
(CCUS)
technology,
involves
catalytic,
photocatalytic,
electrocatalytic
conversions,
promising
method
reducing
CO2
emissions
converting
into
valuable
products.
Recent
advances
in
electrocatalytic,
photocatalytic
reduction
of
have
highlighted
potential
environmental
economic
benefits
these
technologies.
However,
practical
application
techniques
challenging
requires
scientific
research
engineering
efforts
develop
efficient
materials
capable
simultaneously
capturing
it
Therefore,
this
review
presents
comprehensive
analysis
various
catalytic
systems
capture
conversion.
This
aims
identify
advantages
limitations
In
addition,
identified
challenges
future
prospects
proposed
methods
are
outlined.
Thus,
article
covers
current
trends
perspectives
field
combating
through
management.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(33), P. 21804 - 21835
Published: Aug. 8, 2024
Covalent
organic
frameworks
(COFs)
are
crystalline
networks
with
extended
backbones
cross-linked
by
covalent
bonds.
Due
to
the
semiconductive
properties
and
variable
metal
coordinating
sites,
along
rapid
development
in
linkage
chemistry,
utilization
of
COFs
photocatalytic
CO2RR
has
attracted
many
scientists'
interests.
In
this
Review,
we
summarize
latest
research
progress
on
for
CO2
reduction.
first
part,
present
COF
linkages
that
have
been
used
CO2RR,
discuss
four
mechanisms
including
as
intrinsic
photocatalysts,
photosensitive
motifs
metalated
semiconductors
heterojunction
photocatalysts.
Then,
principles
structural
designs
functional
building
units
stacking
mode
exchange.
Finally,
outlook
challenges
provided.
This
Review
is
intended
give
some
guidance
design
synthesis
diverse
different
linkages,
various
structures,
divergent
modes
efficient
photoreduction
CO2.
