Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 12, 2024
Abstract
The
solvent-free
selective
hydrogenation
of
nitroaromatics
to
azoxy
compounds
is
highly
important,
yet
challenging.
Herein,
we
report
an
efficient
strategy
construct
individually
dispersed
Co
atoms
decorated
on
niobium
pentaoxide
nanomeshes
with
unique
geometric
and
electronic
properties.
use
this
supported
single
atom
catalysts
in
the
nitrobenzene
azoxybenzene
results
high
catalytic
activity
selectivity,
99%
selectivity
conversion
within
0.5
h.
Remarkably,
it
delivers
exceptionally
turnover
frequency
40377
h
–1
,
which
amongst
similar
state-of-the-art
catalysts.
In
addition,
demonstrates
remarkable
recyclability,
reaction
scalability,
wide
substrate
scope.
Density
functional
theory
calculations
reveal
that
are
significantly
promoted
by
properties
strong
metal-support
interaction
1
/Nb
2
O
5
.
absence
precious
metals,
toxic
solvents,
reagents
makes
catalyst
more
appealing
for
synthesizing
from
nitroaromatics.
Our
findings
suggest
great
potential
access
boosted
thus
offering
blueprints
design
nanomaterials
organocatalysis.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 9, 2025
Thermocatalytic
recycling
of
plastics
is
typically
constrained
by
high
energy
input
requirements,
resulting
in
poor
economic
efficiency
and
necessitating
the
utilization
light
power.
Indeed,
photothermal
catalysis
offers
several
advantages
over
traditional
photocatalysis
enables
more
efficient
use
energy.
In
this
study,
unique
octahedral
spinel-structured
cobalt
manganese
oxide
(CoMn2O4)
catalysts
are
prepared.
CoMn2O4
acts
as
both
a
reagent
catalyst,
demonstrating
low
intensity
conversion
rates,
enhanced
reactivity,
superior
stability
during
polyethylene
terephthalate
(PET)
glycolysis
via
photothermocatalysis.
Oxygen
vacancies
created
on
facilitate
PET
providing
reactive
sites
that
promote
nucleophilic
addition
subsequent
elimination
reactions.
The
spinel
structure
ensures
thermal
stability,
while
configuration
enhances
optical
absorption
coefficient
efficiency.
Under
identical
conditions,
3.1
times
higher
than
under
purely
maintaining
selectivity
for
high-value
monomers.
This
study
presents
new
catalyst
design
approach
highly
upcycling
plastics,
highlighting
its
substantial
potential
field.
Green Carbon,
Journal Year:
2023,
Volume and Issue:
1(2), P. 105 - 117
Published: Sept. 14, 2023
Photocatalytic
oxidation
coupling
of
amines
represents
a
green
and
cost-effective
method
for
the
synthesis
highly
value-added
imines
under
visible
light
irradiation.
However,
catalytic
efficiency
was
severely
limited
by
poor
response
easy
recombination
photogenerated
charge
carriers.
Herein,
we
report
g-C3N4/α-Bi2O3
Z-scheme
heterojunction
via
electrostatic
self-assembly
g-C3N4
nanosheets
oxygen-vacancy-rich
α-Bi2O3
microsphere
visible-light
driven
oxidative
to
in
H2O
as
solvent
at
room
temperature.
Amines
with
diverse
functional
groups
were
efficiently
converted
into
corresponding
good
excellent
yields.
Impressively,
this
photocatalytic
protocol
is
applicable
challenging
hetero-coupling
two
structurally
different
construct
complicated
asymmetric
imines,
which
first
our
knowledge.
Furthermore,
also
demonstrated
high
stability
could
be
readily
separated
reused
without
obvious
decay
activity
selectivity.
Comprehensive
characterizations
control
experiments
reveal
construction
intimate
interface
between
greatly
boosts
transfer
separation
carries
enhances
redox
capability.
Meanwhile,
surface
oxygen
vacancies
benefits
carriers
activation
reactants.
These
jointly
contributed
an
enhanced
performance
imines.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(30)
Published: May 14, 2024
Transition-metal
carbides
with
metallic
properties
have
been
extensively
used
as
electrocatalysts
due
to
their
excellent
conductivity
and
unique
electronic
structures.
Herein,
NbC
nanoparticles
decorated
carbon
nanofibers
(NbC@CNFs)
are
proposed
an
efficient
robust
catalyst
for
electrochemical
synthesis
of
ammonia
from
nitrate/nitrite
reduction,
which
achieves
a
high
Faradaic
efficiency
(FE)
94.4
%
large
yield
30.9
mg
h
