Advanced Functional Materials,
Год журнала:
2023,
Номер
33(45)
Опубликована: Июль 28, 2023
Abstract
Photocatalytic
selective
oxidation
of
5‐hydroxymethylfurfural
(HMF)
coupled
H
2
production
offers
a
promising
approach
to
producing
valuable
chemicals.
Herein,
an
efficient
in
situ
topological
transformation
tactic
is
developed
for
porous
O‐doped
ZnIn
S
4
nanosheets
HMF
cooperative
with
evolution.
Aberration‐corrected
high‐angle
annular
dark‐field
scanning
TEM
images
show
that
the
hierarchical
O‐ZIS‐120
possesses
abundant
atomic
scale
edge
steps
and
lattice
defects,
which
beneficial
electron
accumulation
molecule
adsorption.
The
optimal
catalyst
(O‐ZIS‐120)
exhibits
remarkable
performance
2,5‐diformylfuran
(DFF)
yields
1624
µmol
h
−1
g
selectivity
>97%,
simultaneously
evolution
rate
1522
.
Mechanistic
investigations
through
theoretical
calculations
O
can
reduce
energy
barrier
hydroxyl
groups
HMF.
In
attenuated
total
reflection
surface‐enhanced
infrared
absorption
spectroscopy
(ATR‐SEIRAS)
results
reveal
DFF
*
(C
(CHO)
)
intermediate
has
weak
interaction
desorb
as
final
product.
This
study
elucidates
topotactic
structural
transitions
2D
materials
electronic
structure
modulation
photocatalytic
production.
Advanced Materials,
Год журнала:
2023,
Номер
35(38)
Опубликована: Июнь 26, 2023
Constructing
Van
der
Waals
heterojunction
is
a
crucial
strategy
to
achieve
excellent
photocatalytic
activity.
However,
in
most
heterojunctions
synthesized
by
ex
situ
assembly,
electron
transfer
encounters
huge
hindrances
at
the
interface
between
two
components
due
large
spacing
and
potential
barrier.
Herein,
phosphate-bridged
of
cobalt
phthalocyanine
(CoPc)/tungsten
disulfide
(WS2
)
bridged
phosphate
(xCoPc-nPO4-
-WS2
designed
prepared
traditional
wet
chemistry
method.
By
introducing
small
molecule
into
CoPc
WS2
,
creates
an
"bridge",
resulting
compact
combination
eliminating
space
Therefore,
(PO4-
bridge
can
serve
as
efficient
channel
efficiently
transmit
photoelectrons
from
under
excited
states.
These
are
captured
catalytic
central
Co2+
subsequently
convert
CO2
molecules
CO
CH4
products,
achieving
17-fold
enhancement
on
3CoPc-0.6PO4-
sample
compared
that
pure
.
Introducing
"bridge"
create
provides
new
perspective
designing
photocatalysts
for
reduction
valuable
products.
National Science Review,
Год журнала:
2024,
Номер
11(5)
Опубликована: Март 8, 2024
ABSTRACT
Photocatalytic
N2
fixation
is
a
promising
strategy
for
ammonia
(NH3)
synthesis;
however,
it
suffers
from
relatively
low
yield
due
to
the
difficulty
in
design
of
photocatalysts
with
both
high
charge
transfer
efficiency
and
desirable
adsorption/activation
capability.
Herein,
an
S-scheme
CoSx/ZnS
heterojunction
dual
active
sites
designed
as
efficient
photocatalyst.
The
exhibits
unique
pocket-like
nanostructure
small
ZnS
nanocrystals
adhered
on
single-hole
CoSx
hollow
dodecahedron.
Within
heterojunction,
electronic
interaction
between
creates
electron-deficient
Zn
enhanced
chemisorption
electron-sufficient
Co
hydrogen
supply
hydrogenation,
cooperatively
reducing
energy
barrier
activation.
In
combination
promoted
photogenerated
electron-hole
separation
facilitated
mass
by
nanostructure,
excellent
performance
NH3
1175.37
μmol
g−1
h−1
achieved.
This
study
provides
new
insights
into
fixation.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(16), С. 9871 - 9885
Опубликована: Янв. 1, 2024
Herein,
we
demonstrate
a
Co/S
co-doped
TiO
2
bimetal
sulfur
oxide
catalyst
with
heterovalent
Co
states
and
abundant
oxygen
vacancy
defects
for
the
photocatalytic
nitrogen
reduction
reaction
in
an
ambient
environment.
