Twinned
zinc
cadmium
sulfide
(ZnxCd1-xS)
has
been
extensively
studied
to
achieve
efficient
Cr(VI)
reduction
and
H2
production
under
light
irradiation
due
its
inherent
homojunctions.
However,
long-distance
migration
of
charge
carriers
relatively
low
CB
level
inevitably
cause
photocatalytic
ability.
Herein,
we
developed
a
DMF-involved
one-step
solvothermal
strategy
introduce
N
heteroatoms
into
Zn0.67Cd0.33S
crystals
incorporated
with
dopant-induced
S
vacancies.
Due
the
synergetic
promotion
elevated
conduction
band
strong
interactants
aggregation,
recombination
behavior
was
effectively
impeded,
resulting
increased
photocurrent
density
(~2.4
times)
electron
(~2.8
times),
as
well
higher
photo-reducing
potential.
The
optimal
NZCS-10
demonstrated
superior
efficiency
99.06%
within
30
min,
rendered
ca.
5.8-
7.6-fold
enhancement
for
evolution
rate
alkaline
acidic
conditions,
respectively.
This
study
provided
universal
gaining
highly
reductive
transition
metal
sulfides
more
active
sites.
Energy & Fuels,
Год журнала:
2024,
Номер
38(9), С. 7637 - 7664
Опубликована: Апрель 12, 2024
In
recent
decades,
a
great
interest
in
photocatalytic
water
splitting
has
been
due
to
the
importance
of
sunlight
hydrogen
production
as
renewable
energy
source
reduce
global
warming
effects.
The
applications
metal
sulfide
semiconductors
photocatalysts,
chalcogenide
compounds,
with
advantages
wide
range
for
light
harvesting
and
tunable
bandgap,
may
be
restricted
by
limited
active
sites,
poor
conductivity,
photo
corrosion,
charge
recombination.
sulfur
vacancy
(SV)
effectively
addresses
these
issues
generates
H2
O2
attaining
adequate
water-splitting
because
improved
optoelectronic
features.
This
review
article
aims
comprehensively
highlight
synergistic
roles
SV
sulfides
amended
overall
activity.
SV-modulated
sulfides'
features
are
deliberated,
followed
different
advanced
synthetic
techniques
effectual
defect
generation.
specific
aspects
refining
optical
range,
dynamics
carrier,
photoinduced
surface
chemical
reactions
deeply
described
applications.
Finally,
summarized
vouchsafing
outlooks
opportunities
confronting
S-vacancy
engineered
sulfides-based
photocatalysts
elucidated.
It
would
expected
hoped
that
this
will
help
researchers
design/fabricate
better
sulfide-based
systems.
Materials Science in Semiconductor Processing,
Год журнала:
2024,
Номер
181, С. 108661 - 108661
Опубликована: Июль 1, 2024
Photocatalysis
plays
a
vital
role
in
addressing
environmental
remediation
and
energy
generation.
Carbon
quantum
dots
(CQDs)
represent
superior
category
of
photocatalysts
devoid
metals,
boasting
remarkable
electron
transfer
capabilities,
up-conversion
photoluminescence,
non-toxic
properties.
Notably,
CQDs
can
function
independently
as
or
become
part
composite
photocatalytic
materials.
This
article
explores
the
precursor
materials
used
CQD
production
various
methods
for
preparing
enhanced
with
CQDs,
such
hydrothermal,
solvothermal,
microwave,
chemical
oxidation,
etc.
Furthermore,
we
provide
an
extensive
overview
recent
advancements
pristine,
doped,
CQD-based
photocatalysts,
encompassing
applications
like
organic
pollutant
degradation
water,
hydrogen
production,
CO2
photoreduction
fuel
The
effect
surface
computational
modelling
was
also
addressed.
Finally,
addressed
challenges
potential
research
avenues
CQD-enhanced
photocatalysts.
Chemical Society Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
We
discuss
the
unique
properties
of
zinc
indium
sulfide
associated
with
exploitation
multifarious
material
design
strategies
to
realise
sustainable
solar-driven
overall
water
splitting
for
green
hydrogen
production.
