Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
137(1)
Published: Oct. 17, 2024
Abstract
The
direct
conversion
and
efficient
utilization
of
methane
pose
a
critical
scientific
challenge.
Indirect
activation
via
reactive
oxygen
species
(ROS)
offers
high
probability
contact
with
efficiency
under
mild
conditions.
However,
reported
product
yields
are
suboptimal
due
to
challenges
in
activating
facilitating
mass
transfer
suspension
systems.
We
propose
the
use
contact‐electro‐catalysis
(CEC),
employing
polydopamine
(PDA)
as
catalyst
that
undergoes
electron
ultrasound,
generating
ROS
drives
partial
oxidation
(POM).
Corresponding
experimental
results
indicate
CH
3
OH
most
HCHO
produced
directly
from
4
.
Furthermore,
through
situ
characterizations,
we
have
shown
light
pretreatment
catalysts
an
oxygenated
atmosphere
facilitates
forming
more
C=O
functional
groups
strong
electron‐withdrawing
properties,
thereby
significantly
enhancing
overall
yields,
particularly
for
OH.
Within
two
hours,
reach
1.5
mmol
g
cat
−1
0.9
This
work
introduces
novel
approach
POM,
while
highlighting
distinctive
catalytic
properties
PDA.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(17), P. 20849 - 20857
Published: Sept. 3, 2024
Combining
hydrogen
evolution
with
the
conversion
of
benzyl
alcohol
(BA)
into
benzaldehyde
(BAD)
could
provide
an
alternative
pathway
for
sufficiently
utilizing
photogenerated
electrons
and
holes
to
achieve
high
value
chemicals
fuels.
Herein,
a
ZnIn2S4
nanosheet
array/one-dimensional
Co9S8
hollow
nanotube
(Co9S8/ZnIn2S4)
composite
has
been
fabricated
by
simple
hydrothermal
solvent
thermal
methods.
Without
utilization
sacrificial
agents,
optimal
20%-Co9S8/ZnIn2S4
hybrid
catalyst
shows
superior
H2
production
3070.56
μmol·g–1·h–1
rate
93.2%,
which
are
4.1
2.9
times
higher
than
those
individual
ZnIn2S4,
respectively.
The
photocatalytic
performance
over
Co9S8/ZnIn2S4
nanocomposites
compared
bare
can
be
credited
introduction
nanotubes
as
cocatalyst,
offer
plentiful
active
sites,
improve
absorption
visible
light,
facilitate
separation
transfer
electron–hole
pairs
ZnIn2S4.
Multiple
cycling
experiments
indicate
good
durability
nanocomposite.
In
addition,
in
situ
electron
paramagnetic
resonance
indicates
that
α-hydroxybenzyl
radicals
key
intermediate
BA
BAD.
This
paper
is
intended
meaningful
reference
ingenious
design
photocatalyst
structure
building
high-performance
coupled
system
sufficient
holes.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 4, 2025
Artificial
photosynthesis
of
hydrogen
peroxide
(H2O2)
from
oxygen
and
water
is
a
promising
approach
for
converting
low-density
solar
energy
into
versatile
chemical
energy.
However,
the
generation
H2O2
through
single-channel
reduction
reaction
(ORR)
prevalent,
while
oxidation
(WOR)
frequently
neglected.
Herein,
we
constructed
Z-scheme
ZnIn2S4/UiO66-NH2
(ZIS/UNH)
heterojunctions,
integrating
ORR
WOR
dual
pathways
photocatalytic
without
noble
cocatalysts
sacrificial
agents.
The
optimized
ZIS/UNH
exhibits
highest
yield
0.85
mmol
g-1
h-1,
which
2.2
14
times
those
ZIS
UNH,
respectively.
formation
heterojunction
efficiently
promotes
separation
transfer
photogenerated
carriers
retaining
holes
with
high
oxidizing
ability
electrons
strong
reducing
ability.
free
radical
quenching
DMPO-ESR
trapping
experiments
demonstrate
that
heterojunctions
produce
in
dual-channel
mode
different
ZIS.
generated
by
consist
two-step
single-electron
·O2-
as
an
intermediate
product
direct
one-step
WOR.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
64(1)
Published: Oct. 17, 2024
The
direct
conversion
and
efficient
utilization
of
methane
pose
a
critical
scientific
challenge.
Indirect
activation
via
reactive
oxygen
species
(ROS)
offers
high
probability
contact
with
efficiency
under
mild
conditions.
However,
reported
product
yields
are
suboptimal
due
to
challenges
in
activating
facilitating
mass
transfer
suspension
systems.
We
propose
the
use
contact-electro-catalysis
(CEC),
employing
polydopamine
(PDA)
as
catalyst
that
undergoes
electron
ultrasound,
generating
ROS
drives
partial
oxidation
(POM).
Corresponding
experimental
results
indicate
CH
