ACS Applied Nano Materials,
Год журнала:
2023,
Номер
6(7), С. 5909 - 5917
Опубликована: Март 30, 2023
Plasmonic
Au
nanoparticles
were
deposited
over
photocatalytic
BiVO4/BiOBr
nanosheets
with
different
loadings
in
the
range
of
0.5–5%
(w/w)
to
boost
reactivity
via
surface
plasmonic
resonance.
The
results
showed
that
highest
benzyl
alcohol
conversion
(100%)
and
maximum
benzaldehyde
yield
(99%)
obtained
using
BiVO4/BiOBr/Au
3%
after
4
h
irradiation.
Electron
paramagnetic
resonance
analysis
trapping
experiments
revealed
singlet
oxygen
is
dominant
species
produced
within
system
suggest
it
main
driving
oxidation
benzaldehyde.
proposed
mechanism
involves
irradiation
light
excite
its
electrons
state
produce
excitons,
which
eventually
produces
triplet
excitons
intersystem
crossing.
Dissolved
O2
subsequently
reacts
these
oxygen.
Moreover,
energy
barrier
intrinsic
reaction
indicated
thermodynamically
favorable.
These
demonstrate
unique
effects
on
activity,
can
be
adapted
selective
reactions.
Chemical Reviews,
Год журнала:
2023,
Номер
123(22), С. 12507 - 12593
Опубликована: Ноя. 1, 2023
Electrocatalysis
underpins
the
renewable
electrochemical
conversions
for
sustainability,
which
further
replies
on
metallic
nanocrystals
as
vital
electrocatalysts.
Intermetallic
have
been
known
to
show
distinct
properties
compared
their
disordered
counterparts,
and
long
explored
functional
improvements.
Tremendous
progresses
made
in
past
few
years,
with
notable
trend
of
more
precise
engineering
down
an
atomic
level
investigation
transferring
into
practical
membrane
electrode
assembly
(MEA),
motivates
this
timely
review.
After
addressing
basic
thermodynamic
kinetic
fundamentals,
we
discuss
classic
latest
synthetic
strategies
that
enable
not
only
formation
intermetallic
phase
but
also
rational
control
other
catalysis-determinant
structural
parameters,
such
size
morphology.
We
demonstrate
emerging
nanomaterials
potentially
advancement
energy
electrocatalysis.
Then,
state-of-the-art
characterizations
representative
electrocatalysts
emphasis
oxygen
reduction
reaction
evaluated
a
MEA
setup.
summarize
review
by
laying
out
existing
challenges
offering
perspective
future
research
directions
toward
practicing
conversions.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(30)
Опубликована: Май 31, 2023
Abstract
The
conversion
of
industrial
exhaust
gases
nitrogen
oxides
into
high‐value
products
is
significantly
meaningful
for
global
environment
and
human
health.
And
green
synthesis
amino
acids
vital
biomedical
research
sustainable
development
mankind.
Herein,
we
demonstrate
an
innovative
approach
converting
nitric
oxide
(NO)
to
a
series
α‐amino
(over
13
kinds)
through
electrosynthesis
with
α‐keto
over
self‐standing
carbon
fiber
membrane
CoFe
alloy.
essential
leucine
exhibits
high
yield
115.4
μmol
h
−1
corresponding
Faradaic
efficiency
32.4
%,
gram
can
be
obtained
within
24
hours
in
lab
as
well
ultra‐long
stability
(>240
h)
the
catalyst,
which
could
convert
NO
NH
2
OH
rapidly
attacking
acid
subsequent
hydrogenation
form
acid.
In
addition,
this
method
also
suitable
other
sources
including
gaseous
or
liquidus
3
−
.
Therefore,
work
not
only
presents
promising
prospects
from
gas
nitrate‐laden
waste
water
products,
but
has
significant
implications
synthetizing
catalytic
science.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(17)
Опубликована: Март 1, 2024
Abstract
Traditional
H
2
O
cleavage
mediated
by
macroscopic
electron
transfer
(MET)
not
only
has
low
utilization
of
,
but
also
sacrifices
the
stability
catalysts.
We
present
a
non‐redox
hydroxyl‐enriched
spinel
(CuFe
4
)
catalyst
with
dual
Lewis
acid
sites
to
realize
homolytic
.
The
results
systematic
experiments,
in
situ
characterizations,
and
theoretical
calculations
confirm
that
tetrahedral
Cu
optimal
acidity
strong
delocalization
can
synergistically
elongate
O−O
bonds
(1.47
Å
→
1.87
Å)
collaboration
adjacent
bridging
hydroxyl
(another
site).
As
result,
free
energy
is
decreased
(1.28
eV
0.98
eV).
be
efficiently
split
into
⋅OH
induced
CuFe
without
MET,
which
greatly
improves
(65.2
%,
nearly
times
than
traditional
catalysts).
system
assembled
affords
exceptional
performance
for
organic
pollutant
elimination.
scale‐up
experiment
using
continuous
flow
reactor
realizes
long‐term
(up
600
mL),
confirming
tremendous
potential
practical
applications.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(20), С. 11110 - 11120
Опубликована: Май 16, 2023
Improving
the
product
selectivity
meanwhile
restraining
deep
oxidation
still
remains
a
great
challenge
over
supported
Pd-based
catalysts.
Herein,
we
demonstrate
universal
strategy
where
surface
strong
oxidative
Pd
sites
are
partially
covered
by
transition
metal
(e.
g.,
Cu,
Co,
Ni,
and
Mn)
oxide
through
thermal
treatment
of
alloys.
It
could
effectively
inhibit
isopropanol
achieve
ultrahigh
(>98%)
to
target
acetone
in
wide
temperature
range
50-200
°C,
even
at
150-200
°C
with
almost
100%
conversion
PdCu1.2/Al2O3,
while
an
obvious
decline
is
observed
from
150
Pd/Al2O3.
Furthermore,
it
greatly
improves
low-temperature
catalytic
activity
(acetone
formation
rate
110
34.1
times
higher
than
that
Pd/Al2O3).
The
decrease
site
exposure
weakens
cleavage
for
C-C
bond,
introduction
proper
CuO
shifts
d-band
center
(εd)
upward
strengthens
adsorption
activation
reactants,
providing
more
reactive
oxygen
species,
especially
key
super
species
(O2-)
selective
oxidation,
significantly
reducing
barrier
O-H
β-C-H
bond
scission.
molecular-level
understanding
C-H
scission
mechanism
will
guide
regulation
noble
relatively
inert
other
reactions.
