Journal of Alloys and Compounds,
Год журнала:
2024,
Номер
1002, С. 175322 - 175322
Опубликована: Июнь 24, 2024
An
integrated
theoretical-experimental
investigation
is
performed
to
understand
the
photocatalytic
and
optical
properties
of
Ag/SrTiO3
nanocomposite
(Ag/STO).
Theoretical
reveals
that
catalytic
activity
Ag/STO
increased
when
Ag
particle
size
smaller,
while
opposite
correlation
observed
for
its
visible-light
absorbance
efficiency.
These
insights
suggest
efficient
photocatalyst
needs
be
balanced
between
active
interfacial
site
density
intensity
by
carefully
controlling
dosage.
Furthermore,
reactive
oxygen
species
are
responsible
oxidative
degradation
organic
pollutant
on
could
identified
from
Density
Functional
Theory
(DFT)
calculations.
Comprehensive
experiments
carried
out
using
Rhodamine-B
(RhB)
photodegradation
test
in
wastewater
treatment
application
excellently
validate
those
theoretical
predictions.
Over
series
synthesized
composites
with
different
contents,
optimum
1%
wt.
loading
has
highest
92.8%
efficiency
RhB
after
1
hour
light
irradiation.
Trapping
also
confirm
crucial
role
O2
OH
species,
which
was
predicted
DFT
calculations,
as
primary
oxidizing
agents
RhB.
This
work
provides
a
useful
framework
develop
novel
plasmonic
nanocomposites
other
applications.
Environmental Science & Technology,
Год журнала:
2017,
Номер
51(5), С. 2924 - 2933
Опубликована: Фев. 1, 2017
A
highly
efficient
and
environmentally-friendly
oxidation
process
is
always
desirable
for
air
purification.
This
study
reported
a
novel
carbon
quantum
dots
(CQDs)/ZnFe2O4
composite
photocatalyst
the
first
time
through
facile
hydrothermal
process.
The
CQDs/ZnFe2O4
(15
vol
%)
demonstrates
stronger
transient
photocurrent
response,
approximately
8
times
higher
than
that
of
ZnFe2O4,
indicating
superior
transfer
efficiency
photogenerated
electrons
separation
electron–hole
pairs.
Compared
with
pristine
ZnFe2O4
nanoparticles,
displayed
enhanced
photocatalytic
activities
on
gaseous
NOx
removal
high
selectivity
nitrate
formation
under
visible
light
(λ
>
420
nm)
irradiation.
Electron
spin
resonance
analysis
series
radical-trapping
experiments
showed
reactive
species
contributing
to
NO
elimination
were
·O2–
·OH
radicals.
possible
mechanisms
proposed
regarding
how
CQDs
improve
performance
ZnFe2O4.
are
believed
act
as
an
electron
reservoir
transporter
well
powerful
energy-transfer
component
during
photocatalysis
processes
over
samples.
Furthermore,
toxicity
assessment
authenticated
good
biocompatibility
low
cytotoxity
CQDs/ZnFe2O4.
results
this
indicate
promising
ACS Applied Nano Materials,
Год журнала:
2020,
Номер
3(7), С. 6156 - 6185
Опубликована: Июнь 15, 2020
Metal
oxide
semiconductors
with
a
bandgap
between
2
and
4
eV
are
an
important
class
of
compounds
in
the
electronics
industry
for
photocatalysis.
With
demand
these
materials
expanding
rapidly,
especially
field
photocatalysis,
fabrication
nanoscale
metal
particles,
which
increases
surface-to-volume
ratio
thereby
reduces
costs,
is
emphasis
current
research.
For
purpose
another
quality
ability
to
absorb
light
efficiently.
However,
due
wide
semiconductors,
absorptions
limited
UV
region.
Conveniently,
wider
range
wavelengths
physical
properties
can
be
enabled
by
doping
nanoparticles.
Furthermore,
synthesis
doped
oxides
nanoparticle
form
offers
utility
expansive
array
systems,
substrates,
dispersion
media.
reliable
nanosized
colloidal
particles
remains
ongoing
challenge
researchers.
This
manuscript
gives
concise
overview
research
conducted
regarding
visible-light-active
nanoparticles
(NPs)
analyzes
how
impacts
optical
properties,
making
them
active
visible
near-infrared
regions.
The
effects
on
applications
also
summarized.
Given
that
most
commonly
TiO2
ZnO,
this
review
highlights
both
anion-
cation-doped
ZnO
In
addition,
perovskite
(e.g.,
BaTiO3
SrTiO3)
as
well
some
lesser
studied
systems
covered.
work
intended
provide
not
only
broad
existing
but
foundation
development
semiconducting
architectures
next-generation
applications.
Chemical Society Reviews,
Год журнала:
2021,
Номер
50(24), С. 13692 - 13729
Опубликована: Янв. 1, 2021
Recent
progress
of
earth-abundant,
nontoxic
perovskite
oxides,
halides
and
oxyhalides
for
photocatalysis
is
discussed
related
to
composition
structure.
