By
implementing
surface
defect
engineering
and
establishing
an
efficient
electron‐transport
pathway,
the
photocatalytic
performance
of
catalyst
can
be
significantly
enhanced.
In
this
work,
addition
amount
thioacetamide
is
varied
to
control
vacancy
content
Mn
0.3
Cd
0.7
S
nanorods,
resulting
in
occurrence
dislocation
phenomena.
results
from
hydrogen
evolution
test,
it
demonstrated
that
with
a
specific
sulfur
exhibits
17
times
higher
activity
regular
S.
The
material,
featuring
vacancy,
enhanced
electron
affinity
improved
light‐absorption
ability
upon
combination
graphdiyne
form
dual
catalyst,
lowest
electron‐transfer
resistance
most
excellent
photogenerated
migration
speed.
successful
construction
S‐scheme
heterojunctions
establishes
new
transmission
channels
for
transport,
allowing
spatial
separation
electrons
holes,
more
participate
reactions.
addition,
situ
X‐ray
photoelectron
spectroscopy,
paramagnetic
resonance,
density‐functional
theory
calculations
are
used
demonstrate
existence
vacancies,
bandgap
structure
distribution
charges
after
vacancies
occur,
possible
mechanisms.
Materials Reports Energy,
Год журнала:
2024,
Номер
4(1), С. 100253 - 100253
Опубликована: Янв. 23, 2024
Photocatalytic
and
photoelectrochemical
water
splitting
using
semiconductor
materials
are
effective
approaches
for
converting
solar
energy
into
hydrogen
fuel.
In
the
past
few
years,
a
series
of
photocatalysts/photoelectrocatalysts
have
been
developed
optimized
to
achieve
efficient
production.
Among
various
optimization
strategies,
regulation
spin
polarization
can
tailor
intrinsic
optoelectronic
properties
retarding
charge
recombination
enhancing
surface
reactions,
thus
improving
solar-to-hydrogen
(STH)
efficiency.
This
review
presents
recent
advances
in
enhance
polarized-dependent
evolution
activity.
Specifically,
manipulation
strategies
several
typical
(e.g.,
metallic
oxides,
sulfides,
non-metallic
semiconductors,
ferroelectric
materials,
chiral
molecules)
described.
end,
critical
challenges
perspectives
towards
future
conversion
briefly
provided.
Materials Today Catalysis,
Год журнала:
2024,
Номер
5, С. 100055 - 100055
Опубликована: Май 24, 2024
Semiconductor
photocatalyzed
energy
production
and
environment
treatment
have
received
a
lot
of
attention.
Mn–Cd–S
solid
solutions
(MnxCd1−xS)
with
tunable
band
structure,
suitable
redox
capacity,
visible
light
response
is
recognized
as
one
the
most
promising
photocatalysts
for
practical
applications.
However,
low
separation
efficiency
photogenerated
carriers
sluggish
reaction
kinetics
restricts
its
photocatalytic
activity.
This
review
discusses
advantages
drawbacks
MnxCd1−xS
photocatalysis
in
terms
electronic
structure
surveys
modification
strategies
activity,
including
modulation
Mn/Cd
ratio,
morphology/structure
regulation,
defect
engineering,
construction
heterojunction,
loading
cocatalysts,
integration
multiple
strategies.
Then,
progress
water
splitting
to
hydrogen,
carbon
dioxide
reduction,
pollutant
degradation
using
MnxCd1−xS-based
materials
are
summarized.
Finally,
it
concluded
by
outlining
challenges
opportunities
developing
efficient
based
on
MnxCd1−xS.
Exploring
low-cost,
highly
efficient,
and
stable
semiconductor
heterojunctions
toward
photocatalytic
overall
water
splitting
has
garnered
great
interest.
Herein,
a
solvothermal
method
is
employed
to
in
situ
construct
novel
direct
Z-scheme
heterojunction
with
hexagonal
Cd0.8Mn0.2S
(CMS)
ultrafine
nanorods
decorated
on
perovskite
NiTiO3
(NTO)
rods.
The
resultant
CMS/NTO(1:5)
an
optimal
mass
ratio
the
presence
of
sacrificial
hole
scavenger
delivers
apparent
quantum
yield
(AQY)
41.0%
at
400
nm
remarkable
H2
1258
μmol
h–1
under
visible
light
(λ
≥
420
nm)
irradiation,
524
6.2
times
higher
than
that
NTO
CMS
alone,
respectively.
This
performance
enhancement
results
from
constructed
CMS/NTO
close
interfacial
contact
its
synergistic
effect,
which
efficient
charge
separation
transfer.
After
incorporating
CoOx,
CMS/NTO-CoOx(1:5)
pure
exhibits
activity
H2/O2
yields
11.6/5.9
full
spectrum
irradiation
Xe-lamp.
study
opens
up
new
avenues
for
developing
noble-metal-free
artificial
photosynthesis
systems
by
coupling
sulfide
solid
solutions
perovskite-type
composite
oxides.
