Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(28)
Published: Feb. 15, 2024
Abstract
Photocatalytic
oxygen
(O
2
)
reduction
to
hydrogen
peroxide
(H
O
is
considered
be
a
promising
method
for
energy
storage.
However,
it
suffers
from
the
rapid
recombination
of
carriers,
limited
solubility
and
slow
diffusion
,
self‐decomposition
H
in
traditional
diphase
systems.
Here,
self‐floating
carbon
dots/conjugated
microporous
polymer
(CDs/CMP)
photocatalytic
system
established
production
organic
synthesis.
Due
D–π–A
structure,
porous
hydrophobicity,
CMP
induced
intramolecular
charge
transfer,
exposed
abundant
reaction
sites,
enhanced
adsorption.
CDs
act
as
“bridges”
electron
transmission
regulate
surface
hydrophobicity
CMP,
further
improving
transfer
optimizing
interface.
CDs/CMP
exhibits
high
8542.6
µmol
g
−1
h
concurrent
furoic
acid
at
2.22
m
.
This
rate
≈90%
higher
than
that
system,
exceeding
all
previously
reported
photocatalysts
triphase
Notably,
achieves
relative
separation
suppressing
generated
self‐decomposition.
Theoretical
calculations
situ
characterizations
reveal
mechanism
evolution.
provides
insights
into
exploring
application
metal‐free
heterogeneous
reactions.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(49)
Published: Aug. 14, 2023
Abstract
Benefiting
from
the
excellent
structural
tunability,
robust
framework,
ultrahigh
porosity,
and
rich
active
sites,
covalent
organic
frameworks
(COFs)
are
widely
recognized
as
promising
photocatalysts
in
chemical
conversions,
emerged
hydrogen
peroxide
(H
2
O
)
photosynthesis
2020.
H
,
serving
an
environmental‐friendly
oxidant
a
liquid
fuel,
has
attracted
increasing
researchers
to
explore
its
potential.
Over
past
few
years,
numerous
COFs‐based
developed
with
encouraging
achievements
production,
whereas
no
comprehensive
review
articles
exist
summarize
this
specific
significant
area.
Herein
we
provide
systematic
overview
of
advances
challenges
COFs
photocatalytic
production.
We
first
introduce
priorities
photosynthesis.
Then,
various
strategies
improve
efficiency
discussed.
The
perspective
outlook
for
future
emerging
field
finally
offered.
This
timely
will
pave
way
development
highly
efficient
practical
production
value‐added
chemicals
not
limited
.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 13, 2024
Abstract
Gold-based
co-catalysts
are
a
promising
class
of
materials
with
potential
applications
in
photocatalytic
H
2
O
production.
However,
current
approaches
Au
show
limited
production
due
to
intrinsically
weak
adsorption
at
the
site.
We
report
an
approach
strengthen
sites,
and
improve
production,
through
formation
electron-deficient
δ+
sites
by
modifying
electronic
structure.
In
this
case,
we
synthesis
TiO
/MoS
x
-Au,
following
selective
deposition
onto
MoS
surface
which
is
then
further
anchored
.
that
catalyst
achieves
significantly
increased
rate
30.44
mmol
g
−1
h
-saturated
solution
containing
ethanol.
Density
functional
theory
calculations
X-ray
photoelectron
spectroscopy
analysis
reveal
mediator
induces
thereby
decreasing
antibonding-orbital
occupancy
Au-O
ads
subsequently
enhancing
adsorption.
This
strategy
may
be
useful
for
rationally
designing
structure
surfaces
facilitate
artificial
photosynthesis.
Chemical Engineering Journal,
Journal Year:
2023,
Volume and Issue:
476, P. 146818 - 146818
Published: Oct. 20, 2023
It
is
an
efficient
strategy
to
construct
photocatalysts
by
integrating
the
advantages
of
inorganic
semiconductors
and
covalent
organic
frameworks
(COFs)
for
H2
generation
along
with
simultaneous
oxidation.
Herein,
inorganic/organic
CdS/COF
(denoted
as
TpBD)
2D
heterostructure
fabricated
electrostatic
self-assembly
method.
The
ultrathin
structure
can
reduce
charge
transfer
distance,
enhance
light
absorption,
multiply
reaction
sites
while
S-scheme
heterojunction
improves
separation
efficiency.
composite
acquires
outstanding
photocatalytic
activity
15.1
mmol/g/h,
simultaneously
convert
cheap
ascorbic
acid
value-added
2,3-diketo-L-gulonic
acid.
Hall
effect
test
elucidates
dynamics
carrier
migration.
electron
paramagnetic
resonance
analysis,
photo-irradiated
Kelvin
probe
force
microscopy,
femtosecond
transient
absorption
spectroscopy,
theoretical
calculation,
in-situ
irradiation
X-ray
photoelectron
spectroscopy
measurements
confirm
superiority
transfer.
This
research
presents
new
inspiration
develop
hydrogen
production
green
chemical
production.
