Energy & environment materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 18, 2025
Active
holes
outperform
photoelectron‐mediated
oxygen
reduction
in
degrading
recalcitrant
organics
under
anaerobic
conditions,
yet
their
utilization
is
limited
by
rapid
charge
recombination.
This
challenge
was
addressed
through
Cu‐based
yolk‐double‐shell
microspheres
(Cu/Cu
2
O@C‐2shell)
engineered
via
heterogeneous
contraction
and
strategies.
Work
function
analyses
confirm
Schottky
junction‐driven
electron
transfer
from
Cu
O
to
Cu,
generating
an
internal
electric
field
that
suppresses
backflow.
Density
functional
theory
reveals
Cu‐mediated
enhancement
of
near‐Fermi
states
(Cu
3d
orbitals)
a
directional
→
C
pathway,
spatially
isolating
O.
Finite‐difference
time‐domain
simulations
reveal
light‐induced
gradients
the
dual‐shell
architecture:
0
‐mediated
localized
surface
plasmon
resonance
effect
enhances
concentration,
while
hierarchical
interfaces
create
outward‐to‐inward
gradient,
directing
migration
inward
stabilizing
oxidative
at
surface.
The
optimized
O)@C‐2shell
exhibits
38‐fold
higher
tetracycline
degradation
sunlight
versus
benchmarks,
with
treated
water
supporting
Escherichia
coli
survival
wheat
growth.
study
provides
design
strategy
for
accumulation
long‐lived
on
semiconductor
photocatalysts.
