Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 8, 2025
Photocatalytic
O2
reduction
to
H2O2
is
a
green
and
promising
technology
with
advantages
in
cost-effectiveness,
sustainability,
environmental
friendliness,
but
its
efficiency
constrained
by
limited
selectivity
for
the
two-electron
oxygen
reaction
(ORR)
pathway.
Here,
we
anchored
isolated
Cu
atoms
tunable
oxidation
states
onto
WO3
as
effective
active
centers
enhance
photocatalytic
production.
Due
charge
compensation
between
single
support,
state
of
species
exhibited
loading-dependent
transition
+2
+1
valence.
Experimental
theoretical
analyses
indicate
that
Cu(I)
sites
exhibit
outstanding
adsorption
activation
capabilities,
transforming
thermodynamically
unfavorable
hydrogenation
*OOH
intermediate
(the
rate-determining
step
ORR
pathway)
into
an
exothermic
process,
thereby
significantly
improving
efficiency.
The
Cu(I)-SA/WO3
photocatalyst
production
rate
102
μmol
h-1
under
visible
light
irradiation,
much
higher
than
other
reported
photocatalysts.
More
importantly,
it
achieves
impressive
apparent
quantum
30%
at
420
nm,
making
significant
breakthrough
this
field.
This
work
provides
novel
perspectives
designing
single-atom
catalysts
efficient
synthesis
via
electronic
modulation.
BioResources,
Journal Year:
2024,
Volume and Issue:
19(3), P. 5511 - 5522
Published: June 28, 2024
The
composite
ZnO@CDs
was
prepared
via
the
hydrothermal
method.
Microcrystalline
cellulose
(MCC)
used
as
source
of
carbon
dots
(CDs).
X-ray
diffraction,
Fourier
transform
infrared
spectrometry,
scanning
electron
microscopy,
and
transmission
microscopy
analyses
were
to
characterize
structure
morphology
ZnO@CDs.
ZnO
showed
a
flake
with
exposed
plane
(001).
photoelectron
spectroscopy
photoluminescence
(PL)
characterization
that
CDs
can
be
produced
by
decomposition
MCC
then
attached
on
surface
ZnO.
photocatalytic
properties
investigated
under
simulated
sunlight
irradiation.
hydrogen
production
reached
1240
µmol·g-1
in
30
min,
which
much
higher
than
bare
mechanism
for
enhanced
catalytic
property
studied.
A
high
rate
(2480
µmol·g-1·h-1)
short
term
would
enable
work
an
emergency
power
supply
use
restoring
electricity
wireless
communication
complicated
situations.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 1, 2024
Converting
hierarchical
biomass
structure
into
cutting-edge
architecture
of
electrocatalysts
can
effectively
relieve
the
extreme
dependency
nonrenewable
fossil-fuel-resources
typically
suffering
from
low
cost-effectiveness,
scarce
supplies,
and
adverse
environmental
impacts.
A
cost-effective
cobalt-coordinated
nanocellulose
(CNF)
strategy
is
reported
for
realizing
a
high-performance
2e-ORR
through
molecular
engineering
hybrid
ZIFs-CNF
architecture.
By
coordination
pyrolysis
process,
it
generates
substantial
oxygen-capturing
active
sites
within
oxygen-insulating
cellulose,
promoting
O
Catalysis Science & Technology,
Journal Year:
2024,
Volume and Issue:
14(23), P. 6854 - 6868
Published: Jan. 1, 2024
A
fundamental
strategy
for
enhancing
the
performance
of
photocatalytic
water-splitting
catalysts
is
to
facilitate
efficient
migration
photogenerated
charge
carriers
establish
a
heterojunction.
