ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(22), P. 16795 - 16833
Published: Oct. 31, 2024
The
photoelectrochemical
(PEC)
reduction
of
carbon
dioxide
(CO2)
to
produce
solar
fuels
presents
a
sustainable
strategy
mitigate
CO2
emissions
and
alleviate
the
global
energy
crisis.
While
significant
research
efforts
have
been
dedicated
optimizing
cell
system
configurations
designing
efficient
photoelectrocatalysts,
there
remains
lack
in-depth
understanding
pathway.
This
review
provides
comprehensive
overview
fundamental
insights
PEC
with
focus
on
pathways
from
perspectives
final
products
adsorption
modes.
First,
key
challenges
are
identified
analyzed,
including
initial
activation
CO2,
competitive
hydrogen
evolution
reaction
(HER),
complex
carbon–carbon
(C–C)
coupling
process.
then
examines
aspects
process,
covering
state-of-the-art
devices,
their
operational
principles,
methodologies
for
capturing
intermediates.
through
concerted
or
sequential
proton–electron
transfer
mechanisms
is
discussed
in
detail.
Furthermore,
potential
systematically
categorized
basis
distinct
modes
that
drive
insertion,
carbon-coordinated
oxygen-coordinated
monodentate
adsorption,
bidentate
oxygen
vacancies.
Detailed
leading
formation
C1,
C2,
C3
compounds
elucidated,
an
emphasis
strategies
enhance
selectivity
toward
C1
C2+
products.
In
particular,
aids
catalyst
design.
For
production,
design
focuses
promoting
activation,
as
rate-determining
step
(RDS)
activation.
contrast,
formation,
aim
increase
intermediate
concentration,
thereby
enhancing
lateral
interaction
intermediates,
which
crucial
C–C
coupling.
Finally,
summarizes
future
breakthroughs
electron,
interfacial,
ionic
pathways,
offering
into
ongoing
technologies.
Journal of The Electrochemical Society,
Journal Year:
2024,
Volume and Issue:
171(3), P. 034501 - 034501
Published: Feb. 23, 2024
Ethylene
is
well
known
as
the
primary
product
of
CO
2
reduction
at
Cu
electrocatalysts
using
zero-gap
membrane
electrode
assembly
cells
with
gas
diffusion
cathodes.
Other
types
including
oxide-derived
Cu,
CuSn
and
CuSe
yield
relatively
more
C
oxygenates;
however,
mechanisms
for
selectivity
are
not
established.
This
work
considers
trends
Cu-P
0.065
,
Cu-Sn
0.03
Se
made
a
standard
one
pot
synthesis
method.
Results
show
that
(Cu
δ
+
=
0.13)
retain
ethylene
higher
Faradaic
efficiencies
(FE
43%
350
mA
cm
−2
)
than
undoped
31%
same
current
density.
The
0.27)
shifts
to
ethanol
48%
while
0.47)
favor
acetate
production
40%
).
Based
on
these
results,
we
propose
common
acetyl
intermediate
mechanism
selective
formation
ethylene,
or
based
degree
partial
positive
charge
(
reaction
sites.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 19, 2025
We
describe
an
in
situ-polymerized
conformal
thin
layer
coating
of
narrow
band
gap
carbon-rich
carbon
nitride
(NBG-CRCN)
on
titania
nanorod
arrays
to
design
a
binary
semiconductor
heterojunction
photocatalyst.
The
situ
polymerization
creates
strong
interaction
between
the
TiO2
substrate
and
film,
which
prevents
leaching
CRCN
liquid
electrolytes.
A
unique
aspect
our
work
is
developing
easy
inexpensive
technique
for
heteroepitaxial
growth
mechanically
photochemically
stable
films
with
intimate
contact
at
CN:TNR
interface.
This
method
aids
overcoming
one
main
problems
(CN),
namely,
inability
produce
evenly
distributed
CN
substrate.
synthesized
NBG-CRCN@TNR
extends
visible
light
absorption
700
nm
(Eg
=
1.7
eV)
red-shifts
photoluminescence
(PL)
emission
peak
580
nm.
shifts
broadening
Raman
spectra
hybrid
compared
those
TNR
confirm
unusually
NBG-CRCN.
An
heteroepitaxially
grow
(002)
rutile
(110)
confirmed
by
advanced
characterization.
High-resolution
transmission
electron
microscopy
(HRTEM),
selected-area
diffraction
(SAED),
grazing-incidence
wide-angle
X-ray
scattering
(GIWAXS)
suggest
(110).
Under
AM1.5G
solar
illumination,
shows
superior
performance
photoelectrochemical
water
splitting,
generating
photocurrent
density
as
high
4.3
mA
cm-2
1
M
KOH
under
0.6
V
external
bias,
rising
8.4
presence
hole
scavenger
(methanol).
impressive
hydrogen
evolution
rate
26.51
μmol
h-1
88.12%
Faradaic
efficiency
recorded.
Establishing
high-quality
interface
g-C3N4
permits
effective
charge
carrier
separation,
leading
enhanced
photocatalytic
activity.
Nanoscale Advances,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
PEC
conversion
of
benzyl
alcohol
to
benzaldehyde
is
achieved
in
a
microchannel
flow
cell
using
tailored
TiO
2
photoanodes
with
compact
and
mesoporous
film
morphologies.
Investigation
key
parameters
affecting
efficiency
performed.
The Chemical Record,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 14, 2025
Abstract
Layered
Double
Hydroxides
(LDHs)
are
versatile
materials
with
tuneable
properties.
They
show
promising
electro‐
and
photo‐catalytic
activity
in
the
activation
conversion
of
CO
2
.
Their
unique
properties
make
LDHs
pivotal
emerging
sustainable
strategies
for
mitigating
effect
emissions.
However,
intricate
structure‐property
relationship
inherent
to
challenges
their
rational
design.
In
this
review,
we
provide
a
comprehensive
overview
both
experimental
computational
studies
about
photo‐
electro‐catalytic
,
mainly
focusing
on
Cu‐based
systems
due
superior
performance
producing
C
products.
We
present
background
framework,
describing
essentials
tools,
designed
support
experimentalists
theoreticians
development
tailored
LDH
efficient
valorisation.
Finally,
discuss
future
potential
advancements,
emphasizing
importance
new
synergistic
experimental‐computational
studies.
