Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(17), P. 2434 - 2434
Published: Aug. 27, 2023
Enhanced
catalysis
for
organic
transformation
is
essential
the
synthesis
of
high-value
compounds.
Atomic
metal
species
recently
emerged
as
highly
effective
catalysts
reactions
with
high
activity
and
utilization.
However,
developing
efficient
atomic
always
an
attractive
challenging
topic
in
modern
chemical
industry.
In
this
work,
we
report
preparation
enhancement
nitrogen-
sulfur-codoped
holey
graphene
(NSHG)
anchoring
Pd.
When
employed
catalyst
nitroarenes
reduction
reactions,
resultant
Pd/NSHG
composite
exhibits
remarkably
catalytic
due
to
co-existence
dual-active
components
(i.e.,
catalytically
active
NSHG
support
homogeneous
dispersion
Pd).
4-nitrophenol
(4-NP)
reaction,
efficiency
(turnover
frequency)
3.99
×
10-2
mmol
4-NP/(mg
cat.·min),
which
better
than
that
metal-free
nitrogen-doped
(NHG)
(2.3
10-3
cat.·min))
carbocatalyst
(3.8
cat.·min)),
conventional
Pd/C
other
reported
metal-based
catalysts.
This
work
provides
a
rational
design
strategy
loaded
on
doped
support.
The
component
(DACC)
also
anticipated
bring
great
application
potentials
broad
range
fields,
such
synthesis,
environment
treatment,
energy
storage
conversion.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(17), P. 12982 - 12990
Published: Aug. 15, 2024
Atomic
dispersed
heterogeneous
catalysts
have
emerged
as
a
prominent
research
focus
in
catalysis
due
to
their
exceptional
atom
utilization,
robust
activity,
and
remarkable
selectivity.
However,
the
design
synthesis
of
with
precisely
defined
atomic
number
dispersion
still
pose
significant
challenges.
In
this
study,
we
employed
magnetron
sputtering
cluster
source
equipped
mass
selector
selectively
fabricate
single-atom,
dual-atom,
clusters
precise
numbers
supported
on
mesoporous
graphitic
carbon
nitride
(mpg-C3N4).
This
method
provides
universally
applicable
approach
for
synthesizing
highly
pure
diatomic
catalysts.
Furthermore,
dual-atom
Pd
catalyst
exhibits
an
outstanding
turnover
frequency
5819
h–1
hydrogenation
nitrobenzene,
surpassing
that
both
single-atom
Pd2057
clusters.
Density
functional
theory
calculations
reveal
excellent
performance
benefits
from
easier
dissociation
H–H
bonds
at
geminal
Pd2
sites
process
nitrobenzene
compared
work
presents
universal
synthetic
strategy
constructing
multimetal
centers,
showcasing
advantages
metal
catalyzing
multimolecule-involved
reactions.
