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
59(2), С. 1034 - 1059
Опубликована: Янв. 6, 2025
Water
vapor
is
a
significant
component
in
real
volatile
organic
compounds
(VOCs)
exhaust
gas
and
has
considerable
impact
on
the
catalytic
performance
of
catalysts
for
VOC
oxidation.
Important
progress
been
made
reaction
mechanisms
H2O
water
resistance
strategies
oxidation
recent
years.
Despite
advancements
technology,
most
still
exhibit
low
activity
under
humid
conditions,
presenting
challenge
reducing
adverse
effects
To
develop
water-resistant
catalysts,
understanding
mechanistic
role
implementing
effective
water-resistance
with
influencing
factors
are
imperative.
This
Perspective
systematically
summarizes
related
research
oxidation,
drawing
from
over
390
papers
published
between
2013
2024.
Five
main
proposed
to
clarify
their
H2O.
inhibition/promotion
introduced,
elucidating
various
VOCs.
Additionally,
different
kinds
discussed,
including
fabrication
hydrophobic
materials,
design
specific
structures
morphologies,
introduction
additional
elements
catalyst
modification.
Finally,
scientific
challenges
opportunities
enhancing
efficient
practical
applications
purification
highlighted.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 23, 2025
Highly
efficient
molecular
oxygen
activation
over
transition
metal
oxides
toward
catalytic
abatement
of
aromatic
volatile
organic
compounds
(AVOCs)
is
possible
yet
challenging
due
to
the
easily
deactivated
surface
vacancy
(VO).
Herein,
dynamic
Mn–VO
associates
were
crafted
onto
Mn-incorporated
CeO2
mesocrystal
(Mn/meso-CeO2)
with
Mn
substituting
a
Ce
atom
through
an
easy-to-handle
precipitation
strategy.
Experiments
and
theoretical
calculation
demonstrated
that
asymmetric
Mn–O–Ce
configuration
induced
electron
delivery
from
low-valent
adjacent
Ce,
destabilizing
circumambient
O
atoms
facilitating
formation
associates.
Compared
pristine
meso-CeO2,
Mn/meso-CeO2
could
efficiently
activate
O2
into
superoxide
radical
peroxanion
(O2•–
O22–)
at
higher
reaction
temperature
(over
200
°C).
Meanwhile,
featuring
substantially
elevated
Lewis
acidity
promoted
adsorption
benzene.
Consequently,
catalyst
exhibited
superior
oxidation
reactivity
(T90
=
215
°C)
C6H6
combustion
via
Langmuir–Hinshelwood
mechanism.
This
work
underlines
importance
rational
design
regulation
sites
oxide
surfaces
for
robust
durable
refractory
AVOC
combustion.
