Dual Effect of Oxygen Vacancy‐Enriched TiO2 Interlayer in Si Photocathode for Enhanced Photoelectrochemical CO2 Reduction to HCOOH
Jun Xing,
No information about this author
Junxia Shen,
No information about this author
Zhihe Wei
No information about this author
et al.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
Integrating
nanostructured
catalysts
with
semiconductors
is
a
prevalent
strategy
for
the
design
of
photoelectrochemical
(PEC)
photocathodes
toward
CO2
reduction
reaction
(CO2RR).
However,
it
still
challenge
to
achieve
high
efficiency
and
selectivity
due
incompatible
catalyst/semiconductor
heterogeneous
interface.
Here,
proposed
that
engineering
oxygen
vacancy
in
TiO2
interlayer
plays
multifunctional
role
boosting
PEC
activity
CO2RR
on
Bi
catalyst
modified
Si
photocathode
(denoted
as
Si/dT/Bi).
It
discovered
accelerates
carrier
transport.
These
vacancies
also
promote
growth
Bi-based
sponge-like
nanostructures
during
photoelectro-deposition
process.
Numerous
experimental
results
combined
situ
attenuated
total
reflection
surface-enhanced
infrared
absorption
spectroscopy
reveal
these
nano-catalysts
Si/dT/Bi
provide
density
active
sites
adsorption
kinetics
HCOOH
production
by
accelerating
formation
key
intermediate
*OCHO.
This
provides
unique
route
future
advancements
technologies.
Language: Английский
Electrolytic CO2 reduction in membrane electrode assembly: Challenges in (Bi)carbonate, crossover, and stability
Next Materials,
Journal Year:
2025,
Volume and Issue:
6, P. 100506 - 100506
Published: Jan. 1, 2025
Language: Английский
Redox‐Mediated CO2 Electrolysis for Recovering Transmembrane Carbon Loss
Xinhui Yu,
No information about this author
Liwei Xue,
No information about this author
Yi Liao
No information about this author
et al.
Angewandte Chemie International Edition,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 9, 2025
CO2
electrolysis
in
alkaline
media
presents
advantages
by
suppressing
the
competitive
hydrogen
evolution
reaction
(HER)
and
enhancing
reduction
selectivity.
However,
it
suffers
from
carbonation
issue,
leading
to
substantial
carbon
loss
due
transmembrane
transport.
To
tackle
this
we
here
put
forward
a
redox
mediator
(RM)-coupled
strategy.
By
integrating
highly
reversible
couple,
approach
spatially
separates
cathodic
anodic
oxygen
reactions
(OERs)
into
two
electrolyzers,
thereby
enabling
recovery
reuse
of
CO2.
Anthraquinone-2,7-disulfonic
acid
(AQDS)
was
chosen
as
owing
its
suitable
potential,
excellent
electrochemical
reversibility,
high
solubility,
nontransmembrane
shuttling
characteristics.
It
allowed
RM-coupled
system
operate
continuously
at
100
mA/cm2,
maintaining
Faradaic
efficiency
(FE)
for
CO2-to-CO
conversion
consistently
around
90%,
while
effectively
capturing
This
proof-of-concept
demonstration
validates
feasibility
highlights
significant
potential
advance
practical
application
electrolysis.
Language: Английский
Redox‐Mediated CO2 Electrolysis for Recovering Transmembrane Carbon Loss
Xinhui Yu,
No information about this author
Liwei Xue,
No information about this author
Yi Liao
No information about this author
et al.
Angewandte Chemie,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 9, 2025
Abstract
CO
2
electrolysis
in
alkaline
media
presents
advantages
by
suppressing
the
competitive
hydrogen
evolution
reaction
(HER)
and
enhancing
reduction
selectivity.
However,
it
suffers
from
carbonation
issue,
leading
to
substantial
carbon
loss
due
transmembrane
transport.
To
tackle
this
we
here
put
forward
a
redox
mediator
(RM)‐coupled
strategy.
By
integrating
highly
reversible
couple,
approach
spatially
separates
cathodic
anodic
oxygen
reactions
(OERs)
into
two
electrolyzers,
thereby
enabling
recovery
reuse
of
.
Anthraquinone‐2,7‐disulfonic
acid
(AQDS)
was
chosen
as
owing
its
suitable
potential,
excellent
electrochemical
reversibility,
high
solubility,
nontransmembrane
shuttling
characteristics.
It
allowed
RM‐coupled
system
operate
continuously
at
100
mA/cm
,
maintaining
Faradaic
efficiency
(FE)
for
‐to‐CO
conversion
consistently
around
90%,
while
effectively
capturing
This
proof‐of‐concept
demonstration
validates
feasibility
highlights
significant
potential
advance
practical
application
electrolysis.
Language: Английский
Microenvironment modulation induced by ethylene-glycol modification enables high activity in selective CO2 electroreduction over lead-based catalysts
Yingying Shu,
No information about this author
Zhihao Wang,
No information about this author
Zichen Song
No information about this author
et al.
Chemical Engineering Journal,
Journal Year:
2025,
Volume and Issue:
unknown, P. 161963 - 161963
Published: April 1, 2025
Language: Английский
Environmentally Friendly and Earth-Abundant Self-Healing Electrocatalyst Systems for Durable and Efficient Acidic Water Splitting
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 21, 2025
Electrochemical
water
splitting
under
acidic
conditions
is
an
efficient
route
for
green
hydrogen
production
from
renewable
electricity.
Its
implementation
on
a
globally
relevant
scale
hindered
by
the
lack
of
abundant
and
low-cost
electrocatalysts
oxygen
evolution
reaction
that
can
operate
stably
efficiently
highly
anodic
conditions.
Here,
we
report
design
stable
OER
consisting
self-healing
bismuth
(Bi)-based
matrix
hosting
transition
metal
active
sites.
Comprehensive
structural
performance
investigation
Co-
Ni-BiOx
electrodes
provides
insights
into
role
electrolyte
composition
pH
in
mechanism
Our
best-performing
[Co-Bi]Ox
[Ni-Bi]Ox
anodes
achieve
over
200
h
continuous
electrolysis
at
catalytic
current
10
mA
cm-2
with
overpotential
590
670
mV
1
0.1
M
H2SO4
electrolyte.
Notably,
while
[Bi]Ox
did
not
contribute
to
activity,
it
was
essential
stabilize
Co
Ni
sites
during
OER.
findings
provide
promising
strategy
engineering
earth-abundant
materials
splitting,
as
alternative
use
poorly
scalable
expensive
noble
catalysts.
Language: Английский
Reactor operating parameters and their effects on the local reaction environment of CO(2) electroreduction
Chemical Society Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
traces
the
intricate
connections
of
operational
parameters
and
local
reaction
environment
effects
aqueous
electrochemical
CO
(2)
reduction.
Language: Английский
Engineering Catalyst-Support Interactions in Cobalt Phthalocyanine for Enhanced Electrocatalytic CO2 Reduction: The Role of Graphene-Skinned Al2O3
Qianqian Bai,
No information about this author
Bingyun Ma,
No information about this author
Le Wei
No information about this author
et al.
Chemical Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Electrocatalytic
CO2
reduction
(eCO2R)
driven
by
renewable
electricity
holds
great
promise
to
mitigate
anthropogenic
emissions.
In
this
study,
we
engineer
cobalt
phthalocyanine
(CoPc)
supported
on
graphene-skinned
Al2O3
nanosheets
(CoPc/Al2O3@C)
enhance
CO2-to-CO
conversion.
The
strong
π-π
stacking
between
the
CoPc
macrocycle
and
interlayer
graphene,
coupled
with
electronic
repulsion
Co2+
center
Al2O3,
induces
a
structural
distortion
in
CoPc,
raising
energy
level
of
d
z2
orbital.
This
perturbation
facilitates
activation,
shifts
rate-determining
step,
thereby
substantially
accelerates
overall
eCO2R
kinetics.
optimal
catalyst
demonstrates
near-unity
CO
faradaic
efficiency
(FECO)
across
wide
current
range,
achieving
high
partial
density
388
mA
cm-2
an
exceptional
turnover
frequency
(TOF)
43
s-1,
addition
prolonged
operational
stability
membrane
electrode
assembly
(MEA).
work,
leveraging
vectorial
interactions
molecular
moieties
substrate
reshape
macrocyclic
structure
realign
orbital
energies
offers
new
insights
into
design
efficient
electrocatalysts
for
eCO2R.
Language: Английский