Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 11, 2024
Abstract
Heterogeneous
palladium‐based
catalysts
show
excellent
catalytic
properties
for
electrocatalytic
oxidation
of
alcohols,
but
the
construction
such
heterogeneous
is
a
challenge.
Here,
multiphase
tetrahedral
PdInMo
nanocatalyst
prepared
by
one‐pot
reaction
method.
And
consists
face‐centered
cubic
structure
and
an
intermetallic
structure.
Due
to
oxygen
affinity
indium
molybdenum
atoms,
interface
defects
internal
structure,
concave
shows
enhanced
efficiency
in
methanol
ethanol.
Compared
with
commercial
Pd/C
catalysts,
PdIn
0.117
Mo
0.037
has
best
mass
activity
specific
activity.
In
electrocatalysis
oxidation,
(2205.57
mA
mg
Pd
−1
)
(6.67
cm
−2
are
4.81
3.40
times
than
that
(458.5
,
1.96
),
respectively.
ethanol
(2668.49
(8.11
4.06
3.14
(655.83
2.58
This
study
provides
reference
design
highly
efficient
palladium
alcohol
oxidation.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 13, 2024
Abstract
The
rational
design
of
a
photocatalyst
and
its
microenvironmental
modulation
is
crucial
in
the
heterogeneous
photocatalysis
process,
yet
relevant
research
on
photocatalytic
biodiesel
synthesis
not
explored.
Herein,
based
prediction
density
functional
theory
(DFT)
calculations,
highly
efficient
ternary
biocompatible
montmorillonite
(Mt)
nanocomposites
S‐scheme
heterojunction
photocatalysts
(g‐C
3
N
4
‐TiO
2
@Mt,
CTM)
are
successfully
rationally
designed.
By
modulating
microenvironment
production,
CTM‐2
demonstrates
exceptional
catalytic
performance
stability,
achieving
record‐breaking
yield
98.5%.
Through
ex/in
situ
X‐ray
photoelectron
spectroscopy
(XPS),
absorption
near‐edge
(XANES),
theoretical
formation
revealed,
which
can
generate
an
interface
electric
field
(IEF)
that
provides
intrinsic
driving
force
for
carrier
migration
enhances
surface
positivity.
This
boosts
enrichment
effect
electronegative
oleic
acid
(OA)
carboxyl
molecules,
thus
greatly
enriching
substrate
concentration
improving
reaction
microenvironment.
Moreover,
fourier
transform
infrared
spectrometer
(FT‐IR)/Raman
together
with
electron
paramagnetic
resonance
(EPR)
further
confirm
key
intermediates
CH
O•
ester
carbonyl
(C═O),
DFT
calculations
provide
reference
pathway,
determined
to
be
capable
significantly
reducing
energy
barrier
rate‐determining
step.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 3, 2025
Abstract
The
upcycling
of
polyethylene
terephthalate
(PET)‐derived
ethylene
glycol
(EG)
to
glycolic
acid
(GA,
a
biodegradable
polymer
monomer)
via
electrocatalysis
not
only
produces
valuable
chemicals
but
also
mitigates
plastic
pollution.
However,
the
current
reports
for
electrooxidation
EG‐to‐GA
usually
operate
at
reaction
potentials
>1.0
V
vs
reversible
hydrogen
electrode
(RHE),
much
higher
than
theoretical
potential
(0.065
RHE),
resulting
in
substantial
energy
wastage.
Herein,
body‐centered
cubic
RhIn
intermetallic
compounds
(IMCs)
anchored
on
carbon
support
(denoted
as
RhIn/C)
are
synthesized,
which
shows
excellent
performance
with
an
onset
0.35
RHE,
lower
values
reported
literature.
catalyst
possesses
satisfactory
GA
selectivity
(85%
0.65
RHE).
Experimental
results
combined
density
functional
theory
calculations
demonstrate
that
IMCs
enhance
adsorption
EG
and
OH
−
,
facilitating
generation
reactive
oxygen
species
thereby
improving
catalytic
performance.
RhIn/C
exhibits
electrocatalytic
evolution
reaction,
ensuring
it
can
be
used
bifunctional
two‐electrode
system
coupled
production.
This
work
opens
new
avenues
reducing
consumption
PET‐derived
clean
Abstract
The
electrochemical
C─N
coupling
of
carbon
dioxide
(CO
2
)
and
nitrate(NO
3
‐
is
an
alternative
strategy
to
the
traditional
high−energy
industrial
pathway
for
urea
synthesis,
which
urgently
requires
design
efficient
catalysts
achieve
high
yield
Faraday
efficiency
(FE).
Here,
amorphous
low‐content
copper‐doped
cobalt
metallene
boride
(
a
‐Cu
0.1
CoB
x
metallene)
designed
synthesis
via
coupling.
can
drive
electrocatalytic
CO
NO
−
in
‐saturated
m
KNO
electrolyte,
with
27.7%
FE
312
µg
h
−1
mg
cat.
at
−0.5
V,
as
well
superior
cycling
stability.
situ
Fourier
transform
infrared
theoretical
calculations
reveal
that
electronic
effect
between
Cu,
Co,
B
causes
Cu
Co
dual
active
sites
promote
adsorption
reactants.
Furthermore,
introduced
trace
reduces
reaction
energy
barrier
facilitate
synthesis.
This
work
provides
promising
route
optimization
Co‐based
electrosynthesis
through
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(37), С. 25519 - 25529
Опубликована: Янв. 1, 2024
The
proposed
hard-template-high-temperature
calcination
method
effectively
maintains
the
morphology
of
template,
and
prepared
NiS
electrocatalyst
exhibits
excellent
multifunctional
electrocatalytic
performance.
Engineering
structural
defects
is
beneficial
for
electrocatalytic
performances.
Herein,
a
class
of
acid-etched
PtNiRh
nanotubes
with
abundant
around
cavities
were
constructed.
Modulated
electronic
and
coordination
structures
closely
associated
boost
the
ethanol
oxidation
reaction
(EOR)
activity
selectivity.
The
optimized
PtNiRh-E-H
exhibit
an
EOR
mass
specific
1.81
A
mgPt–1
3.38
mA
cm–2,
respectively.
high
retention
at
1.80
after
chronoamperometric
test
10000
s
was
achieved
by
nanotubes.
Moreover,
featuring
compressive
lattice
strain
lower-lying
d
band
center
display
strong
inclination
C1
pathway,
as
evidenced
higher
linearly
bonded
CO
intensity
lower
adsorbed
acetate
across
applied
potentials
using
attenuated
total-reflection
surface-enhanced
infrared
absorption
spectroscopy
(ATR-SEIRAS).
Also,
adsorption
accelerated
oxidative
desorption
OH
species
led
to
superior
selectivity
Differential
spectrometry
(DEMS)
together
ATR-SEIRAS
provides
explicit
evidence
catalytic
pathway
CH3CH2OH
→
CH3CH2OHads
···
CH3CHO
CH3CO
CH3
+
2CO2.
work
represents
feasible
strategy
alcohol
catalysis,
wherein
acid
etching
exposes
significantly
more
brings
about
optimal
structure
strain.
