Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 14, 2024
Abstract
Metal
nitrogen
carbon
(MNC)‐based
Fenton
reactions
leveraged
with
robust
peroxymonosulfate
(PMS)
interaction
effectively
guarantee
the
elimination
of
refractory
contaminants,
yet
precise
design
local
microenvironment
MNC
to
couple
multiple
PMS
activation
pose
major
challenges.
Herein,
a
porous
Co
single‐atom
catalyst
(SAC)
defects
(N
v
)
(MCo/NC‐6)
is
fabricated
initiate
oxidation
reaction.
The
weaker
but
richer
coordination
between
and
N
in
precursor
facilitates
formation
structure
during
pyrolysis,
achieving
simultaneously
electronic
spatial
distribution
tuning.
Compared
SAC
(ZCo/NC‐6),
optimized
MCo/NC‐6
significantly
increase
bisphenol
A
(BPA)
reactivity
(
k
=
0.63
min
−1
),
utilization
(78%),
singlet
oxygen
1
O
2
yield
(100%)
by
15.3,
2.4,
2.6
times,
respectively.
Experimental
analyses
theoretical
calculations
reveal
that
Co─N─C
regulated
both
micro
space
neighboring
endowed
high‐mobility
electrons,
thus
synergistically
facilitating
rapid
generation
efficient
.
This
work
promises
new
opportunities
for
microenvironments‐regulated
SACs,
charts
trajectories
complex
Fenton‐like
systems.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(6), P. 4340 - 4351
Published: March 7, 2024
The
in-depth
activation
mechanism
of
oxygen
species
(including
lattice
and
gaseous
oxygen)
for
catalytic
oxidation
reactions
has
not
been
elucidated
still
remains
a
question
on
the
experimental
level.
In
this
work,
dual
molecule
highly
efficient
volatile
organic
compound
was
observed
spinel
catalysts
through
construction
vacancy
engineering
(urea
modification).
active
surface
were
generated
via
weakening
metal–oxygen
bond
strength,
which
could
be
easily
activated
to
participate
in
toluene
form
CO2.
Simultaneously,
ability
molecular
also
enhanced
promote
replenishment
species.
Moreover,
formation
consumption
rates
intermediates
significantly
accelerated
due
Hence,
U400
catalyst
(T90
=
217
°C)
exhibited
performance
compared
with
pristine
250
°C).
This
work
provided
credible
comprehension
process
heterogeneous
reaction,
developing
pathway
boost
activity.
