Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(13), С. 8787 - 8799
Опубликована: Март 23, 2024
Harnessing
solar
energy
to
produce
value-added
fuels
and
chemicals
through
photocatalysis
techniques
holds
promise
for
establishing
a
sustainable
environmentally
friendly
economy.
The
intricate
dynamics
of
photogenerated
charge
carriers
lies
at
the
core
photocatalysis.
balance
between
trapping
band-edge
recombination
has
crucial
influence
on
activity
semiconductor
photocatalysts.
Consequently,
regulation
traps
in
photocatalysts
becomes
key
optimizing
their
activities.
Nevertheless,
our
comprehension
trapping,
compared
that
well-studied
recombination,
remains
somewhat
limited.
This
limitation
stems
from
inherently
heterogeneous
nature
both
temporal
spatial
scales,
which
renders
characterization
formidable
challenge.
Fortunately,
recent
advancements
time-resolved
spectroscopy
space-resolved
microscopy
have
paved
way
considerable
progress
investigation
manipulation
trapping.
In
this
Perspective,
we
focus
with
aim
direct
link
photocatalytic
To
achieve
this,
begin
by
elucidating
principles
advanced
spectroscopic
such
as
femtosecond
transient
absorption
microscopic
methods,
single-molecule
fluorescence
surface
photovoltage
microscopy.
Additionally,
provide
an
overview
noteworthy
research
endeavors
dedicated
probing
using
time-
techniques.
Our
attention
is
then
directed
toward
achievements
defect
engineering.
Finally,
summarize
Perspective
discuss
future
challenges
opportunities
lie
ahead
field.
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.
