ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(21), P. 14070 - 14079
Published: Oct. 19, 2023
Establishing
a
binary
synergy
is
promising
to
break
the
scaling
relationship
in
heterogeneous
catalysis.
In
this
study,
we
created
CuO
nanocatalysts
with
isolated
Pt
atoms
selectively
oxidize
NH3
N2,
which
helps
reduce
fine
particulate
matter
air
pollution.
These
had
reaction
rate
30
times
higher
than
catalysts
at
160
°C
and
30%
N2
selectivity
99%
conversion.
Our
experimental
theoretical
findings
showed
that
field
separation
strategy
was
responsible
for
improved
performance.
Specifically,
facilitated
adsorption/activation
of
O2
while
adjacent
Cu
adsorption/activation.
Through
operando
infrared
spectroscopy
calculations,
found
weaker
adsorption
NO2
intermediate
on
sites
crucial
better
This
research
sets
foundation
developing
high-performance
catalysts.
Journal of Materials Chemistry A,
Journal Year:
2022,
Volume and Issue:
10(27), P. 14171 - 14186
Published: Jan. 1, 2022
This
review
about
the
recent
advances
in
oxygen
vacancies
for
catalytic
oxidation
of
volatile
organic
compounds
considers
construction
strategies,
characterization
methods
and
effects
catalysts.
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(23), P. 17278 - 17287
Published: Nov. 6, 2022
Pt-based
catalysts
have
attracted
widespread
attention
in
environmental
protection
applications,
especially
the
catalytic
destruction
of
light
alkane
pollutants.
However,
developing
a
satisfying
platinum
catalyst
with
high
activity,
excellent
water-resistance,
and
practical
suitability
for
hydrocarbon
combustion
at
low
temperature
is
challenging.
In
this
study,
Pt
supported
on
selected
Nb2O5
oxide
exhibited
an
efficient
activity
propane
oxidation
exceeded
that
most
reported
literature.
More
importantly,
Pt/Nb2O5
maintained
durability
even
after
high-temperature
aging
700
°C
under
harsh
working
conditions,
such
as
certain
degree
moisture,
space
velocity,
composite
The
performance
was
attributed
to
abundant
metallic
species
stabilized
surface
Nb2O5,
which
prompted
C-H
bond
dissociation
ability
rate-determining
step.
Furthermore,
initially
activated
via
oxidehydrogenation
followed
acrylate
path
more
surface.
Overall,
can
be
considered
promising
alkanes
from
industrial
sources
could
provide
inspiration
designing
superb
alkanes.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(48)
Published: Oct. 5, 2022
The
in-depth
mechanism
on
the
simultaneous
activation
of
O2
and
surface
lattice
O2-
one
active
metallic
site
has
not
been
elucidated
yet.
Herein,
we
report
a
strategy
for
construction
abundant
oxygen
sites
by
rational
design
Cu1
/TiO2
single
atom
catalysts
(SACs).
charge
transfer
between
isolated
Cu
TiO2
support
generates
CuI
2-coordinated
Olat
in
-O-Ti
hybridization
structure,
which
facilitates
chemisorption
molecules.
Simultaneously,
induced
distortion
activate
adjacent
,
achieving
dual
.
switches
CO
oxidation
from
Eley-Rideal
(80
°C)
to
Mars-van
Krevelen
route
(200
with
increase
reaction
temperature.
can
modulating
electron
properties
SACs
boost
heterogeneous
catalytic
activity.
Environmental Functional Materials,
Journal Year:
2022,
Volume and Issue:
1(2), P. 166 - 181
Published: June 1, 2022
Herein,
Pd
supported
on
UiO-66
as
well
its
NH2-
and
NO2-functional
materials
with
ultra-low
loadings
(0.05
wt%)
were
synthesized
for
toluene
oxidation.
Pd–U,
using
the
support,
exhibited
superb
catalytic
performance,
water
resistance,
resistance
to
SO2.
A
series
of
experiments
characterizations
revealed
that
a
high
dispersion
small
clusters,
Pd0/Pdtotal
proportion,
better
adsorption
toluene,
best
activation
capacities
gaseous
oxygen
species
enhanced
degradation
over
Pd–U.
Additionally,
mechanism
Pd-based
catalysts
was
discussed.
Furthermore,
water-resistance
SO2
concentration
influence
tested
analyzed.
Introducing
H2O
suppressed
species,
decreased
performance
three
catalysts.
The
different
impacts
investigated
elucidated.
This
study
provides
guidance
rationally
designing
removing
under
in-field
operating
conditions.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(9), P. 6338 - 6350
Published: April 24, 2023
Unraveling
the
role
of
surface
oxygen
sites
in
transition
metal
oxides
during
catalytic
reactions
has
always
been
focus
environmental
and
energy
chemistry
research.
Herein,
active
cubic
perovskite
cobalt
oxide
were
engineered
to
comprehend
their
crucial
mechanism
at
molecular
level.
By
removing
those
inert
Sr/La–O
termination
layers,
exposed
on
Co
terminated
Sr0.6La0.4CoO3−δ
that
furnished
dominant
process
CO
oxidation
via
Mars–van
Krevelen
(MvK)
mechanism.
The
fabrication
five-coordinate
ions
enhanced
covalency
Co–O
bonds
not
only
optimize
electronic
structure
3d–O
2p,
but
also
supply
sites,
which
effectively
oxidizes
CO2
with
a
significantly
improved
performance
stability
as
evidenced
by
soft/hard
XAS,
XPS,
O2-TPD.
Furthermore,
online
isotopic
18O2
mass
spectrometry,
situ
DRIFTS,
theoretical
simulation
demonstrate
activity
enhances
kinetics
MvK
reaction,
while
unsaturated
coordination
from
primarily
contribute
activated
molecules
stable
cycle.
results
reported
here
provide
deep
insight
into
comprehension
relationships
among
structure,
reaction
necessary
for
reactions.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(28), P. 12742 - 12753
Published: July 3, 2024
Short
carbon
chain
alkanes,
as
typical
volatile
organic
compounds
(VOCs),
have
molecular
structural
stability
and
low
polarity,
leading
to
an
enormous
challenge
in
the
catalytic
oxidation
of
propane.
Although
Ru-based
catalysts
exhibit
a
surprisingly
high
activity
for
propane
CO2
H2O,
active
RuOx
species
are
partially
oxidized
sintered
during
reaction,
decrease
significantly
inhibiting
their
application
industrial
processes.
Herein,
Ru/Ce@Co
catalyst
is
synthesized
with
specific
structure,
which
cerium
dioxide
dispersed
thin
layer
on
surface
Co3O4,
Ru
nanoparticles
fall
preferentially
oxide
dispersity.
Compared
Ru/CeO2
Ru/Co3O4
catalysts,
demonstrates
excellent
propane,
even
under
severe
operating
conditions,
such
recycling
space
velocity,
certain
degree
moisture,
temperature.
Benefiting
from
this
particular
(5:95)
more
Ce3+
leads
being
anchored
firmly
CeO2
low-valent
state
has
strong
potential
adsorption
activation
oxygen,
beneficial
stability.
This
work
provides
novel
strategy
designing
high-efficiency
combustion
short
alkanes.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(2), P. 1449 - 1463
Published: Jan. 4, 2024
The
discovery
of
high-entropy
oxides
(HEOs)
in
2015
has
provided
a
family
potential
solid
catalysts,
due
to
their
tunable
components,
abundant
defects
or
lattice
distorts,
excellent
thermal
stability
(Δ
