ACS Omega,
Год журнала:
2024,
Номер
9(52), С. 51031 - 51039
Опубликована: Дек. 17, 2024
The
application
of
existing
ternary
betaine
(Be)-based
deep
eutectic
solvents
(DESs)
faces
inevitable
limitations
due
to
the
low
regenerability
and
water
absorption
capability
DESs.
In
this
study,
three
Be-based
DESs
with
different
molar
ratios
were
prepared
by
adding
promoter
diethanolamine
(DEA)
binary
system
Be
ethylene
glycol
(EG).
effects
DEA,
temperature,
flow
rate
on
CO2
then
investigated.
At
a
ratio
1:5:8
(Be:EG:DEA),
capacity
reached
0.207
g
CO2/g
DES
at
an
temperature
30
°C
gas
50
mL/min.
addition
contents
triggered
dissolution,
forming
+
system.
added
inhibited
Evaluation
showed
that
their
capacities
remained
above
0.176
after
five
cycles
absorption–desorption.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(17), С. 8563 - 8631
Опубликована: Янв. 1, 2024
Ionic
liquids
(ILs)
and
deep
eutectic
solvents
(DESs)
have
tremendous
potential
for
reactive
capture
of
CO
2
,
due
to
their
highly
properties,
including
a
wide
electrochemical
stability
window,
low
volatility,
high
solubility.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Апрель 6, 2024
Abstract
Improving
the
kinetics
and
selectivity
of
CO
2
/CO
electroreduction
to
valuable
multi-carbon
products
is
a
challenge
for
science
requirement
practical
relevance.
Here
we
develop
thiol-modified
surface
ligand
strategy
that
promotes
electrochemical
CO-to-acetate.
We
explore
picture
wherein
nucleophilic
interaction
between
lone
pairs
sulfur
empty
orbitals
reaction
intermediates
contributes
making
acetate
pathway
more
energetically
accessible.
Density
functional
theory
calculations
Raman
spectroscopy
suggest
mechanism
where
increases
sp
hybridization
(ad)
,
facilitating
rate-determining
step,
CO*
(CHO)*.
find
ligands
stabilize
(HOOC–CH
)*
intermediate,
key
intermediate
in
pathway.
In-situ
shows
shifts
C–O,
Cu–C,
C–S
vibrational
frequencies
agree
with
ligand-intermediate
interactions.
A
Faradaic
efficiency
70%
obtained
on
optimized
thiol-capped
Cu
catalysts,
onset
potentials
100
mV
lower
than
case
reference
catalysts.
Chemical Science,
Год журнала:
2024,
Номер
15(26), С. 9949 - 9976
Опубликована: Янв. 1, 2024
Electrocatalysis
stands
out
as
a
promising
avenue
for
synthesizing
high-value
products
with
minimal
environmental
footprint,
aligning
the
imperative
sustainable
energy
solutions.
Deep
eutectic
solvents
(DESs),
renowned
their
eco-friendly,
safe,
and
cost-effective
nature,
present
myriad
advantages,
including
extensive
opportunities
material
innovation
utilization
reaction
media
in
electrocatalysis.
This
review
initiates
an
exposition
on
distinctive
features
of
DESs,
progressing
to
explore
applications
electrocatalyst
synthesis
Additionally,
it
offers
insightful
analysis
challenges
prospects
inherent
electrocatalysis
within
DESs.
By
delving
into
these
aspects
comprehensively,
this
aims
furnish
nuanced
understanding
thus
broadening
horizons
realm
facilitating
expanded
application.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 5, 2025
Abstract
Electrocatalytic
CO
2
reduction
(CO
RR)
is
rapidly
emerging
as
a
promising
sustainable
strategy
for
transforming
into
valuable
fuels
and
chemical
feedstocks,
crucial
step
toward
carbon‐neutral
society.
The
efficiency,
selectivity,
stability
of
RR
are
heavily
influenced
by
the
chosen
catalyst
operating
conditions
used.
Despite
substantial
advances
in
development
catalysts,
there
scarcity
comprehensive
reviews
focusing
on
influence
different
environments
performance.
This
review
offers
detailed
examination
internal
external
environmental
control
strategies
designed
to
enhance
efficiency.
fundamental
reaction
mechanisms
through
situ
operational
techniques,
paired
with
theoretical
analyses,
discussed
while
also
identifying
key
challenges
future
research
directions
technology.
By
delivering
overview
current
state
field,
this
highlights
critical
role
control,
mechanistic
insights,
practical
considerations
needed
successful
commercialization
The
strong
binding
energy
of
CO
on
iron
surfaces
has
rendered
Fe
electrodes
as
poor
electrochemical
2
reduction
(eCO2R)
catalysts,
predominantly
producing
hydrogen.
Recent
studies
tuning
the
microenvironment
near
catalyst
by
local
electric
field
in
nonaqueous
environments
have
been
shown
to
promote
eCO2R
facilitating
activation
step.
Herein,
use
tetraethylammonium
(TEA)
cation
tune
surfaces,
such
that
it
leads
formation
industrially
relevant
oxalates
(C
products),
is
reported.
At
optimal
concentrations,
developed
system
achieves
25
mA
cm
−2
current
density
and
Faradaic
Efficiencies
up
75%
toward
oxalate.
Furthermore,
situ
attenuated
total
reflectance
Fourier
transform
infrared
spectroscopy
indicates
presence
surface‐adsorbed
TEA
cations
other
species
leading
well‐known
outer‐sphere
mechanism
electron
transfer
during
eCO2R.
employment
Fe,
along
with
tuning,
not
only
demonstrates
high
catalytic
performance
but
also
provides
a
safer
more
sustainable
alternative
toxic
catalysts
Pb
dominate
eCO
R
literature.
These
findings
pave
way
for
further
optimization
scale‐up
process,
offering
viable
route
chemical
production
mitigation.
