Water Research,
Год журнала:
2023,
Номер
247, С. 120785 - 120785
Опубликована: Окт. 24, 2023
Visible
light
photocatalysis
is
widely
considered
a
sustainable
approach
to
break
down
micropollutants
without
chemical
addition.
To
promote
the
output
of
photogenerated
carriers
under
visible
light,
Z-scheme
plasmonic
photocatalyst
Bi-CeO2/Ag0/BiO2
was
designed
and
fabricated
activate
dissolved
oxygen
in
water
for
micropollutant
degradation.
The
doped
Bi
not
only
improved
separation
electron-hole,
but
also
narrowed
band
gap
CeO2
enhance
its
absorption
light.
Notably,
metallic
silver
(Ag0)
works
as
an
electronic
transmission
vehicle
from
Bi-CeO2
BiO2
mechanism.
Likewise,
surface
plasmon
resonance
effect
Ag0
enhanced
Furthermore,
doping
induced
abundant
vacancies
on
capability
selectivity
towards
O2
adsorption
activation,
which
favored
generation
O2•-
by
electrons
degrade
sulfamethoxazole,
enrofloxacin,
bisphenol
A.
Theoretical
calculation
results
confirmed
O2•--driven
degradation
pathway
sulfamethoxazole.
Therefore,
extends
photocatalytic
reactivity
CeO2-based
catalysts
range,
provides
chemical-free
method
effectively
micropollutants.
Crystal Growth & Design,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 16, 2024
As
a
prevalent
Co-contained
catalyst,
modified
Co3O4
has
been
widely
utilized
to
activate
peroxymonosulfate
(PMS)
for
organic
wastewater
treatment
due
its
affordability
and
accessibility.
While
the
catalysis
enhancement
of
by
catalytic
inert
species
is
often
attributed
formation
oxygen
vacancies
(OVs),
underlying
mechanism
beyond
OVs
remains
unclear.
Herein,
we
designed
one-pot
pyrolysis
process
synthesize
ZnO/Co3O4
heterojunctions
featuring
Zn–Co
tetrahedral
coordination
on
their
interface.
In
PMS-advanced
oxidation
methylene
blue
(MB),
epitaxial
growth
ZnO
surface
led
an
88-fold
increase
in
activity,
facilitating
rapid
degradation
dyes
achieve
deep
mineralization
effluent.
Co
sites
hydroxyls
played
crucial
role
PMS
activation,
generating
variety
reactive
species.
Among
these
species,
singlet
(1O2)
was
identified
as
dominant
responsible
MB
degradation,
with
assistance
sulfate
radical.
Theoretical
calculations
demonstrated
that
Zn–OH
group
easier
than
Co–OH
through
polarization
during
chemisorption.
The
activated
groups
served
novel
active
sites,
participating
activation
nonradical
way
generate
partial
1O2.
This
study
sheds
new
light
effect
(ZnO)
enhancing
activity
Co3O4,
refining
our
understanding
generation
route
1O2
activation.
