ACS Applied Materials & Interfaces,
Journal Year:
2021,
Volume and Issue:
13(44), P. 52670 - 52680
Published: Nov. 1, 2021
Z-scheme
heterojunctions
are
fundamentally
promising
yet
practically
appealing
for
photocatalytic
hydrogen
(H2)
production
owing
to
the
enhanced
redox
power,
spatial
separation
of
charge
carriers,
and
broad-spectrum
solar
light
harvesting.
The
charge-transfer
dynamics
at
can
be
accelerated
by
inserting
mediators
heterojunction
interfaces.
In
this
study,
we
introduce
Au
nanoparticle
in
W18O49/g-C3N4
heterostructure,
which
enables
an
improved
H2
rate
3465
μmol/g·h
compared
with
direct
(1785
μmol/g·h)
under
1
sun
irradiation.
apparent
quantum
yields
W18O49/Au/g-C3N4
3.9%
9.3%
420
1200
nm,
respectively.
activity
is
attributable
triple-channel
mechanism:
channel
I─Z-scheme
transfer
facilitates
increased
power
photoexcited
electrons;
channels
II
III─the
localized
surface
plasmon
resonances
from
(channel
II)
W18O49
III)
enable
harvesting
extension
visible
near-infrared
wavelengths.
Advanced Powder Materials,
Journal Year:
2022,
Volume and Issue:
2(1), P. 100073 - 100073
Published: June 30, 2022
The
development
of
distinguished
photocatalysts
with
high
photo-carrier
disassociation
and
photo-redox
power
for
efficient
elimination
pollutants
in
water
is
great
significance
but
still
a
grand
challenge.
Herein,
novel
Cd0.5Zn0.5S/Bi2WO6
S-scheme
heterojunction
was
built
up
by
integrating
Cd0.5Zn0.5S
nanoparticles
on
Bi2WO6
microspheres
via
simple
route.
charge
transfer
mode
substantially
boosts
the
high-energetic
electrons/holes
spatial
detachment
conservation
(reduction)
(oxidation),
respectively,
as
well
effectively
suppresses
photo-corrosion
Cd0.5Zn0.5S,
rendering
superior
redox
ability.
optimal
achieves
exceptional
visible-light-driven
photocatalytic
tetracycline
degradation
Cr(VI)
reduction
efficiency,
3.2
(1.9)-time
33.6
(1.6)-time
stronger
than
that
neat
(Cd0.5Zn0.5S),
while
retaining
stability
reusability.
Quenching
test,
mass
spectrometry
analysis,
toxicity
assessment
based
Quantitative
Structure
Activity
Relationships.
calculation
unravel
prime
active
substances,
intermediates,
photo-degradation
pathway,
intermediate
eco-toxicity
process.
This
research
not
only
offers
potential
photocatalyst
aquatic
environment
protection
also
promotes
exploration
powerful
chalcogenides-based
protection.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(15)
Published: Feb. 26, 2023
Abstract
Designing
and
developing
visible‐light‐responsive
materials
for
solar
to
chemical
energy
is
an
efficient
promising
approach
green
sustainable
carbon‐neutral
systems.
Herein,
a
facile
in
situ
growth
hydrothermal
strategy
using
Mo‐modified
ZnIn
2
S
4
(Mo‐ZIS)
nanosheets
coupled
with
NiTiO
3
(NTO)
microrods
synthesize
multifunctional
ZIS
wrapped
NTO
(Mo‐ZIS@NTO)
photocatalyst
enhanced
interfacial
electric
field
(IEF)
effect
typical
S‐scheme
heterojunction
reported.
Mo‐ZIS@NTO
catalyst
possesses
wide‐spectrum
light
absorption
properties,
excellent
visible
light‐to‐thermal
effect,
electron
mobility,
charges
transfer,
strong
IEF
exhibits
solar‐to‐chemical
conversion
visible‐light‐driven
photocatalytic
hydrogen
evolution.
Notably,
the
engineered
Mo
1.4
‐ZIS@NTO
superior
performance
H
evolution
rate
of
up
14.06
mmol
g
−1
h
−
1
apparent
quantum
efficiency
44.1%
at
420
nm.
The
scientific
explorations
provide
in‐depth
understanding
microstructure,
heterojunction,
IEF,
Mo‐dopant
facilitation
effect.
Moreover,
theoretical
simulations
verify
critical
role
element
promoting
adsorption
activation
O
molecules,
modulating
behavior
on
active
sites,
thus
accelerating
overall
catalytic
efficiency.
mechanism
via
adjustable
regulation
over
also
demonstrated.
