ChemSusChem,
Journal Year:
2024,
Volume and Issue:
18(3)
Published: Sept. 6, 2024
Abstract
Electrocatalytic
carbon
dioxide
reduction
into
high‐value
chemicals
is
one
of
the
important
solutions
to
greenhouse
effect
and
energy
crisis.
However,
slow
kinetic
process
eight
electrons
requires
development
efficient
catalysts
improve
yields.
Single
atom
(SACs)
with
high
activity
selectivity
have
become
an
emerging
research
frontier
in
field
heterogeneous
catalysis.
Herein,
a
catalyst
comprised
Cu
single
atoms
loaded
on
substrate
(Cu‐NC)
developed
for
highly
selective
electrocatalytic
CO
2
methane
(CH
4
).
The
optimal
(Cu‐NC‐1‐4)
exhibits
faradaic
efficiency
(FE)
over
50
%
CH
within
wide
potential
window
from
−1.3
V
−1.8
(
vs
.
RHE)
highest
FE
up
67.22
at
−1.6
RHE).
Meanwhile,
product
among
all
products
reaches
93.00
%,
decay
can
be
negligible
via
70‐hour‐stability‐test.
existence
atomic
dispersed
Cu−N
3
sites
was
verified
by
high‐angle
annular
dark
scanning
transmission
electron
microscopy
(HAADF‐STEM)
X‐ray
absorption
near
edge
structure
(XANES).
Density
functional
theory
(DFT)
calculations
show
that
effective
adsorption
key
intermediate
*CO
prompts
generation
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(49)
Published: Aug. 19, 2024
Abstract
Photocatalytic
conversion
of
CO
2
to
methane
faces
challenges
due
the
stability
,
unpredictable
intermediates,
and
complex
electron
transfer
steps.
Herein,
a
spatial
In
S
3
/In
O
heterojunction
with
abundant
vacancies
(ISIO(V
))
is
obtained
through
facile
Polyvinylpyrrolidone
(PVP)
treatment
reach
yield
16.52
µmol·g
−1
·h
selectivity
95.93%,
which
highest
among
reported
based
catalysts.
The
work
function
(
W
f
),
differential
charge
density,
Kelvin
Probe
Force
Microscopy
(KPFM)
results
confirm
that
strengthen
built‐in
electric
field
(BEF)
(ISIO)
heterojunctions,
improving
carrier
separation.
Density
functional
theory
(DFT)
calculations
reveal
induce
redistribution,
facilitating
adsorption
activation
*CO
intermediate,
thus
promoting
hydrogenation
*CHO.
reaction
pathway
photocatalytic
reduction
revealed
by
in
situ
diffuse
reflectance
infrared
Fourier
transform
spectroscopy
(DRIFTS)
Gibbs
free
energy
(Δ
G
).
modify
electronic
orbitals
occupied
molecular
orbital
(HOMO)
atom,
resulting
stronger
interaction
between
catalyst
*CHO,
reduces
Δ
*CHO
regulates
CH
4
.
This
study
paves
new
avenue
for
design
photocatalysts
highly
selective
defect
engineering.
Small,
Journal Year:
2024,
Volume and Issue:
20(32)
Published: March 15, 2024
Abstract
Solar‐driven
carbon
dioxide
(CO
2
)
methanation
holds
significant
research
value
in
the
context
of
emission
reduction
and
energy
crisis.
However,
this
eight‐electron
catalytic
reaction
presents
substantial
challenges
activity
selectivity.
In
regard,
researchers
have
conducted
extensive
exploration
achieved
developments.
This
review
provides
an
overview
recent
advances
efficient
selective
photocatalytic
CO
methanation.
It
begins
by
discussing
fundamental
principles
detail,
analyzing
strategies
for
improving
efficiency
conversion
to
CH
4
comprehensively.
Subsequently,
it
outlines
applications
advanced
characterization
methods
Finally,
highlights
prospects
opportunities
area,
aiming
inspire
into
high‐value
shed
light
on
mechanisms.
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
17(21)
Published: May 22, 2024
Abstract
The
limited
yield
of
H
2
production
has
posed
a
significant
challenge
in
contemporary
research.
To
address
this
issue,
researchers
have
turned
to
the
application
surface
plasmon
resonance
(SPR)
materials
photocatalytic
generation.
SPR,
arising
from
collective
electron
oscillations,
enhances
light
absorption
and
facilitates
efficient
separation
transfer
electron‐hole
pairs
semiconductor
systems,
thereby
boosting
efficiency.
However,
existing
reviews
predominantly
focus
on
SPR
noble
metals,
neglecting
non‐noble
metals
semiconductors.
In
review,
we
begin
by
elucidating
five
different
mechanisms,
covering
hot
injection,
electric
field
enhancement,
scattering,
plasmon‐induced
resonant
energy
transfer,
photo‐thermionic
effect,
which
activity.
Subsequently,
comprehensive
overview
follows,
detailing
materials‐metals,
semiconductors‐in
production.
Additionally,
personal
perspective
is
offered
developing
highly
SPR‐based
photocatalysis
systems
for
solar‐to‐H
conversion
future.
This
review
aims
guide
development
next‐gen
advancing
solar‐to‐fuel
conversion.
