Polymers,
Год журнала:
2024,
Номер
16(23), С. 3325 - 3325
Опубликована: Ноя. 27, 2024
Transitioning
from
crude
oil
to
renewable
sources
of
carbon-based
chemicals
is
critical
for
advancing
sustainable
development.
Lignin,
a
wood-derived
biomacromolecule,
holds
great
potential
as
feedstock,
but
efficient
depolymerization
and
dearomatization
methods
are
required
fully
unlock
its
potential.
In
this
investigation,
we
present
silver-catalyzed
aqueous
electrocatalytic
method
the
selective
partial
soda
lignin
under
mild,
ambient
conditions.
Utilizing
water/sodium
carbonate
solvent
system
silver
electrode
mediate
electrochemical
reduction,
achieved
significant
over
reaction
times
ranging
5
20
h.
Analysis
by
nuclear
magnetic
resonance
(NMR)
high-resolution
mass
spectrometry
(HRMS)
revealed
sodium
levulinate,
acetate,
formate
main
aliphatic
products,
alongside
various
aromatic
species
in
depolymerized
products
(DL).
This
conversion
into
both
valuable
compounds
reactive
intermediates
offers
promising
opportunities
further
synthesis
wide
range
organic
chemicals,
contributing
development
more
circular
economy.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(49)
Опубликована: Авг. 13, 2024
Abstract
Electroreduction
of
CO
2
into
multi‐carbon
(C2+)
products
(e.g.
C2+
alcohols)
offers
a
promising
way
for
utilization.
Use
strong
alkaline
electrolytes
is
favorable
to
producing
products.
However,
can
react
with
hydroxide
form
carbonate/bicarbonate,
which
results
in
low
carbon
utilization
efficiency
and
poor
stability.
Using
acidic
electrolyte
an
efficient
solve
the
problems,
but
it
challenge
achieve
high
selectivity
Here
we
report
that
amine
modified
copper
nanoparticles
exhibit
at
condition.
The
Faradaic
(FE)
reach
up
81.8
%
media
(pH=2)
total
current
density
410
mA
cm
−2
over
n‐butylamine
Cu.
Especially
FE
alcohols
52.6
%,
higher
than
those
reported
electroreduction
In
addition,
single‐pass
towards
production
60
%.
Detailed
studies
demonstrate
molecule
on
surface
Cu
cannot
only
enhance
formation,
adsorption
coverage
*CO,
also
provide
hydrophobic
environment,
result
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 12, 2024
Abstract
The
era
of
an
energy
economy
driven
by
“carbon
neutrality”
is
putting
forward
stricter
requirements
for
the
use
carbon
resources
and
governance
CO
2
.
Electrochemical
reduction
dioxide
reaction
(CO
RR),
renewable
energy,
a
practical
storage
technology
with
broad
application
prospects.
It
can
reduce
into
carbon‐based
fuels
chemical
products.
Among
them,
multi‐carbon
(C
2+
)
products
have
higher
density
larger
market
size,
significantly
global
demand
fossil
close
artificial
cycle.
Introducing
additional
active
sites
Cu‐based
catalysts
to
prepare
dual‐site
tandem
regulate
electronic
geometric
structure
catalysts,
break
linear
scale
relationships,
potential
barriers,
bring
superb
stable
catalytic
performance.
Various
types
are
developed,
understanding
effect
pushed
level.
This
paper
reviews
several
typical
catalysts:
atom–atom
atom‐particle
particle–particle
heterogeneous
interface
catalysts.
then
deeply
analyzes
mechanism
research
progress
these
advanced
in
RR.
In
addition,
challenges
opportunities
faced
such
also
discussed.
Abstract
The
electrochemical
reduction
of
CO
2
(eCO
RR)
holds
promise
in
mitigating
atmospheric
greenhouse
gas
levels
but
is
hindered
by
low
reaction
kinetics,
high
energy
barriers,
and
poor
selectivity.
To
address
these
challenges,
we
developed
a
novel
series
cost‐effective
AgCu‐containing
metal‐aerogel
catalysts
with
surface
areas
(ECSA)
using
top‐down
approach.
Ag
85
Cu
15
aerogel,
an
ECSA
27.41
cm
,
achieved
Faraday
efficiency
(FE%)
89.3
%
for
production
at
−0.9
V
vs.
RHE.
Increasing
the
content
to
over
50
aerogel
matrix
produced
small
amounts
C
H
4
maximum
FE%
12.9
−1.0
further
enhance
efficiency,
multi‐walled
carbon
nanotubes
(CNT)
were
incorporated
into
alloy
via
hydrothermal
treatment.
highly
dispersed
CNTs
within
increased
57.00
forming
well‐defined
porous
structure
through
van‐der
Waals
interactions,
improving
selectivity,
achieving
98.6
−0.7
vs
.
RHE
partial
current
density
9.6
mA/cm
H‐cell.
86
initial
FE
was
maintained
during
18
h
test
continuous
electrolysis.
Environmental Science Nano,
Год журнала:
2024,
Номер
11(10), С. 4230 - 4239
Опубликована: Янв. 1, 2024
The
unique
Cu
0
/Cu
+
interface
of
Cu-MOF74/Cu
2
O-350
enhances
the
adsorption
reaction
intermediates
and
provides
more
active
sites,
thereby
increasing
faradaic
efficiency
(FE)
CO
reduction
to
C
H
4
.
Abstract
Environmental‐friendly
aqueous
Zn−CO
2
batteries
present
bifunctional
potentials
of
achieving
carbon
neutrality
and
energy
storage.
Nonetheless,
anode
corrosions
derived
from
H
O
molecules
high
risks
volatilization
leakage
hinder
the
advancement
batteries.
In
this
work,
polyvinyl
alcohol
(PVA)‐based
hydrogel
electrolyte
with
fast
ion
diffusion
kinetics,
mechanical
strength,
flexibility
is
developed
to
replace
liquid
electrolyte.
Since
hydroxyl
radicals
in
polymer
chain
can
interact
Zn
2+
,
electrode
corrosion
free
active
around
significantly
inhibited,
facilitating
uniform
deposition
cations.
The
introduction
an
ionic
plasticizer
further
enhances
interaction
between
backbone,
as
well
amorphous
extent
possesses
adequate
self‐healing
ability,
whose
conductivity
reaches
7.95
×
10
−3
S
cm
−1
.
symmetric
metal
containing
remain
steady
for
>2000
h
under
different
current
densities.
Furthermore,
battery
based
on
Ru
nanoparticles
cathode
realizes
a
discharge
capacity
6028
mAh
g
stable
cyclicity
90
times.
reaction
path
electrolyte‐based
that
CO
reduced
ZnCO
3
C
species
followed
by
reversible
decomposition
products
recharge.
Cu-based
bimetallic
catalysts
show
enhanced
electrochemical
CO
2
reduction
performance
via
the
tandem
effect.
This
review
traces
their
progress,
highlighting
design
advances,
mechanisms,
and
challenges
to
guide
efficient
conversion.
