Nanomaterials,
Год журнала:
2024,
Номер
14(11), С. 926 - 926
Опубликована: Май 24, 2024
Magnetic
separation
of
photocatalysts
holds
great
promise
for
water
treatment.
A
magnetic
method
has
a
positive
effect
on
the
recovery
catalysts
after
degradation.
In
this
paper,
an
efficient
and
reusable
catalytic
system
is
developed
based
coating
Fe3O4
by
depositing
Fe2+
surface
ZnO.
The
Fe3O4/ZnO
nanocomposite
exhibits
enhanced
performance
organic
pollutant
demonstrates
high
photocatalytic
activity
100%
degradation
efficiency
in
Rhodamine
B
(RhB)
under
UV
light
irradiation
50
min.
excellent
primarily
due
to
photogenerated
electron-hole
pairs
being
facilitated
strong
interaction
between
induction
endows
composite
with
superior
capability
from
water.
Experiments
different
radical
scavengers
revealed
that
hydroxyl
(·OH)
key
reactive
effective
RhB.
This
work
innovatively
affords
common
interfacial
dopant
deposition
strategy
application
dye
pollutants
catalyst
wastewater
efficiently.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 27, 2025
Electronic
metal-support
interaction
(EMSI)
has
been
widely
explored
in
the
catalytic
degradation
of
volatile
organic
compounds
(VOCs)
owing
to
formation
special
interfacial
sites.
Herein,
EMSI
effect
was
engineered
by
constructing
serial
Pt
catalysts
supported
on
CuO-Fe3O4
bimetal
oxide
(Pt/CFO).
Among
them,
0.5Pt/CFO
catalyst
with
0.5
wt
%
loading
exhibited
an
outstanding
activity,
T90
(the
temperature
90%
toluene
conversion)
lowered
185
°C,
and
displayed
excellent
stability
water
resistance.
Comprehensive
physicochemical
characterizations
revealed
that
evident
electron
transfer
occurred
via
interface
structure
(Pt-O-Fe),
producing
positively
charged
(Ptδ+)
abundant
Fe2+
species.
Notably,
increased
density
around
Fe
species
weakened
Fe-O
bond
thus
activated
surface
lattice
oxygen
(Olatt).
Further,
temperature-programmed
desorption
experiments
situ
diffuse
reflectance
infrared
Fourier
transform
spectroscopy
results
demonstrated
electron-deficient
Ptδ+
conducive
adsorption
activation
at
low
temperature.
Consequently,
deep
oxidation
achieved
participation
Olatt,
benefiting
from
Ptδ+-O-Fe2+
sites
synergistic
catalysis
for
activation.
This
work
provides
interesting
idea
explore
relationship
between
highly
efficient
VOC
abatement.
Nanomaterials,
Год журнала:
2024,
Номер
14(11), С. 926 - 926
Опубликована: Май 24, 2024
Magnetic
separation
of
photocatalysts
holds
great
promise
for
water
treatment.
A
magnetic
method
has
a
positive
effect
on
the
recovery
catalysts
after
degradation.
In
this
paper,
an
efficient
and
reusable
catalytic
system
is
developed
based
coating
Fe3O4
by
depositing
Fe2+
surface
ZnO.
The
Fe3O4/ZnO
nanocomposite
exhibits
enhanced
performance
organic
pollutant
demonstrates
high
photocatalytic
activity
100%
degradation
efficiency
in
Rhodamine
B
(RhB)
under
UV
light
irradiation
50
min.
excellent
primarily
due
to
photogenerated
electron-hole
pairs
being
facilitated
strong
interaction
between
induction
endows
composite
with
superior
capability
from
water.
Experiments
different
radical
scavengers
revealed
that
hydroxyl
(·OH)
key
reactive
effective
RhB.
This
work
innovatively
affords
common
interfacial
dopant
deposition
strategy
application
dye
pollutants
catalyst
wastewater
efficiently.
