ChemCatChem,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Abstract
CO
2
is
a
major
contributor
to
global
warming,
leading
severe
environment
and
human
health
consequences.
Catalytic
hydrogenation
has
emerged
as
one
of
the
most
promising
strategies
mitigate
emissions.
However,
catalytic
performance
existing
catalysts
remains
suboptimal.
Recent
studies
have
highlighted
potential
oxygen
vacancy
(OV)
engineering
enhance
by
activating
reactants,
accelerating
electron
transport,
tuning
surface
chemical
properties
catalysts.
Despite
its
importance,
comprehensive
review
OV
in
reactions
lacking.
This
systematically
examines
recent
advancements
for
design
novel
materials
reactions.
It
covers
key
aspects
such
construction
methods,
characterization
techniques,
functions
OVs.
Additionally,
addresses
challenges
catalyst
synthesis
characterization,
while
outlining
future
directions
field.
aims
provide
valuable
insights
development
highly
efficient
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.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 15, 2024
Metal-organic
frameworks
(MOFs)
are
composed
of
metal
nodes
and
organic
linkers
that
can
self-assemble
into
an
infinite
network.
The
high
porosity
large
surface
area
MOFs
facilitate
the
effective
enrichment
mass
transfer
analytes,
which
enhance
signal
response
improve
sensitivity
electrochemical
sensors.
Additionally,
their
derivatives
possess
properties
unsaturated
sites
tunable
structures,
collectively
demonstrating
potential
for
sensing.
This
paper
summarizes
preparation
methods,
structural
properties,
applications
in
sensing,
emphasizing
sensors'
selectivity
from
perspectives
direct
indirect
detection.
it
also
explores
future
directions
prospects
with
aim
overcoming
current
limitations
through
innovative
approaches.
