Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 10, 2024
The
glycerol
oxidation
reaction
(GOR)
for
producing
high-value-added
organic
compounds
is
of
great
research
interest
due
to
its
potential
in
alleviating
the
energy
crisis.
Herein,
a
facile
NH
Angewandte Chemie International Edition,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 8, 2025
Electrocatalytic
glycerol
oxidation
reaction
(GOR)
to
produce
high-value
formic
acid
(FA)
is
hindered
by
high
formation
potential
of
active
species
and
sluggish
C-C
bond
cleavage
kinetics.
Herein,
Ni
single-atom
(NiSA)
Co
(CoSA)
dual
sites
anchored
on
nitrogen-doped
carbon
nanotubes
embedded
with
Ni0.1Co0.9
alloy
(Ni0.1Co0.9@NiSACoSA-NCNTs)
are
constructed
for
electrochemical
GOR.
Remarkably,
it
can
reach
10
mA
cm-2
at
a
low
1.15
V
versus
the
reversible
hydrogen
electrode
(vs.
RHE)
realize
formate
selectivity
93.27
%
even
conversion
98.81
1.45
vs.
RHE.
The
GOR
mechanism
pathway
systematically
elucidated
via
experimental
analyses
theoretical
calculations.
It
revealed
that
hydroxyl
(*OH)
be
produced
during
NiSA,
CoSA,
synergistically
optimizes
electronic
structure
CoSA
sites,
reducing
energy
barriers
*OH-mediated
bonds
dehydrogenation
C1
intermediates.
This
decreases
number
intermediates
steps
GOR-to-FA,
thus
increasing
production
efficiency.
After
coupling
evolution
in
membrane
assembly
cell,
14.26
g
23.10
L
H2
100
108
h.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Synchronous
electrosynthesis
of
value-added
adipic
acid
(AA)
and
H2
is
extremely
crucial
for
carbon
neutrality.
However,
accomplishing
the
preparation
AA
at
large
current
density
with
high
selectivity
still
challenging.
Herein,
a
robust
Mo-doped
Ni2P@Ni12P5
heterojunction
more
P
vacancies
on
Ni
foam
proposed
simultaneous
electrooxidation
cyclohexanol
(CHAOR)
to
hydrogen
evolution
reaction
(HER)
density.
Combined
X-ray
photoelectron
spectroscopy,
absorption
fine
structure,
electron
spin
resonance
confirm
that
Mo
incorporation
induces
charge
redistribution
Ni2P@Ni12P5,
where
adjusts
electrons
from
P,
triggers
vacancies.
Further
experimental
theoretical
investigations
reveal
d-band
center
upshifted,
optimizing
adsorption
energies
water
electron-rich
site
boosting
HER
activity.
Besides,
Ni3+
generated
electron-deficient
induced
by
Mo,
alongside
OH*
triggered
concurrently
promote
CHA
dehydrogenation
C─C
bond
cleavage,
decreasing
energy
barrier
CHAOR.
Consequently,
two-electrode
flow
electrolyzer
achieves
industrial
(>230
mA
cm-2)
85.7%
yield,
100%
Faradaic
efficiency
production.
This
study
showcases
an
bifunctional
electrocatalyst
production
productivity.
Angewandte Chemie,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 8, 2025
Abstract
Electrocatalytic
glycerol
oxidation
reaction
(GOR)
to
produce
high‐value
formic
acid
(FA)
is
hindered
by
high
formation
potential
of
active
species
and
sluggish
C−C
bond
cleavage
kinetics.
Herein,
Ni
single‐atom
(Ni
SA
)
Co
(Co
dual
sites
anchored
on
nitrogen‐doped
carbon
nanotubes
embedded
with
0.1
0.9
alloy
@Ni
‐NCNTs)
are
constructed
for
electrochemical
GOR.
Remarkably,
it
can
reach
10
mA
cm
−2
at
a
low
1.15
V
versus
the
reversible
hydrogen
electrode
(vs.
RHE)
realize
formate
selectivity
93.27
%
even
conversion
98.81
1.45
vs.
RHE.
The
GOR
mechanism
pathway
systematically
elucidated
via
experimental
analyses
theoretical
calculations.
It
revealed
that
hydroxyl
(*OH)
be
produced
during
,
synergistically
optimizes
electronic
structure
sites,
reducing
energy
barriers
*OH‐mediated
bonds
dehydrogenation
C
1
intermediates.
This
decreases
number
intermediates
steps
GOR‐to‐FA,
thus
increasing
production
efficiency.
After
coupling
evolution
in
membrane
assembly
cell,
14.26
g
23.10
L
H
2
100
108
h.
Biodiesel
plays
a
key
role
in
achieving
economy-wide
decarbonization
but
its
production
discharges
significant
amounts
of
CO2
and
glycerol-laden
wastewater.
Given
the
increasing
abundance
biodiesel
wastewater
low
redox
potential
glycerol,
coupling
glycerol
oxidation
reaction
(GOR)
with
electrolysis
has
emerged
as
an
attractive
strategy
to
achieve
sustainable
management,
utilization,
green
chemical
synthesis
single
unit
process.
Despite
need
for
highly
stable
catalysts,
few
studies
have
examined
electrocatalyst
deactivation
environmental
waste
streams.
Here,
we
present
first-of-a-kind
diagnostic
study
that
investigates
nickel
(Ni)
catalyst
stability
during
GOR
synthetic
wastewaters.
A
current
decline
99.7%
was
observed
within
24
h
operation.
This
coincided
80%
decrease
surface
active
Ni(II)/Ni(III)
concentrations,
190-fold
increases
interfacial
impedance,
appearance
electrode
C-bonds
suggested
coverage
by
reactants
intermediates
likely
main
contributor
loss
catalytic
activity.
Analyses
more
complex
electrolytes
containing
methanol
oleate
emergence
distinct
mechanisms
through
restricted
NiOOH
formation.
Altogether,
this
details
several
previously
unreported
mechanisms.
These
findings
can
ultimately
help
inform
future
design
toward
practical
valorization.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 10, 2025
Abstract
The
integration
of
glucose
oxidation
reaction
(GOR)
and
nitrate
reduction
(NO
3
−
RR)
in
an
electrolyzer
affords
a
sustainable
approach
to
produce
high
value‐added
products
remove
pollutants.
Herein,
3D
hierarchical
architecture
consisting
defect‐rich
copper–cobalt
nanosheets
immobilized
by
cobalt
phosphide‐modified
nickel
foam
(D‐CuCo/CoP/NF)
is
rationally
designed
as
bifunctional
electrocatalyst
for
GOR
NO
RR.
resulting
self‐standing
electrode
displayed
remarkable
activity.
Only
1.29
V
vs.
RHE
required
yield
current
density
100
mA
cm
−2
.
Glucose
efficiently
converted
into
formate
with
selectivity
value
93.4%
Faraday
efficiency
(FE)
90.3%.
as‐prepared
D‐CuCo/CoP/NF
also
capable
transforming
nitrates
valuable
ammonia,
leading
FE
96.9%
rate
802.9
µmol
h
−1
Such
performance
renders
it
the
best
electrocatalysts
Mechanistic
studies
revealed
that
defects
catalyst
greatly
facilitated
adsorption
both
Cu(OH)
2
Co
3+
‐O/Co
4+
‐O
species
served
active
sites
reaction.
A
GOR||NO
RR
hybrid
flow
cell
constructed
using
electrode,
at
voltage
1.35
V.
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
The
selective
oxidation
of
glycerol
to
dihydroxyacetone
(DHA)
represents
a
critical
method
for
efficiently
utilizing
glycerol,
primary
byproduct
biodiesel
production.
However,
the
challenge
balancing
catalyst
activity
and
recycling
stability
significantly
limits
practical
application
this
process.
Herein,
conversion
performance
is
effectively
modulated
by
controlling
nanostructure
support
in
Au‐supported
catalysts.
Zinc
oxide
carriers
with
morphologies
nanorods
(NRs),
nanoflowers
(NFs),
nanoparticles
(NPs)
are
successfully
prepared
loaded
Au
obtain
series
Au/ZnO‐Z
Among
them,
composed
flower‐shaped
zinc
nanostructures
NPs
(Au/ZnO‐NF)
exhibits
optimal
performance,
92.9%
DHA
selectivity
69.5%.
Notably,
Au/ZnO‐NF
demonstrates
exceptional
cycling
surpassing
most
currently
reported
catalysts,
maintaining
75.2%
75.1%
even
after
five
cycles.
Comprehensive
characterization
experimental
analysis
demonstrat
that
catalysts
exhibit
low
reduction
temperatures,
smallest
nanoparticle
size,
excellent
crystallinity,
enhance
adsorption
O
2
polyols
at
secondary
hydroxyl
moiety.
ChemSusChem,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 12, 2025
Abstract
As
a
major
by‐product
of
biodiesel
production,
glycerol
offers
significant
economic
potential
when
effectively
utilized.
The
electrooxidation
to
formic
acid
in
couped
systems
has
attracted
considerable
attentions
due
its
environmental
friendliness,
cost‐effectiveness,
low
energy
consumption
and
production
high‐value‐added
chemicals.
This
concept
presents
the
key
strategies
for
catalyst
design
rational
construction
representative
coupled
towards
efficient
acid.
Firstly,
we
overview
from
four
aspects,
including
heteroatom
doping,
vacancy
engineering,
interface
component
construct
highly
active
sites
tune
electronic
properties
electrocatalysts.
Subsequently,
discuss
oxidation
acid,
highlight
importance
high‐value
added
Finally,
conclude
by
outlining
current
challenges
proposing
future
perspectives,
arouse
further
research
interest
facilitate
development.