Chemical Society Reviews,
Год журнала:
2024,
Номер
53(10), С. 5149 - 5189
Опубликована: Янв. 1, 2024
This
review
summarizes
promising
strategies
including
the
design
of
catalysts
and
construction
coupled
electrocatalytic
reaction
systems,
aimed
at
achieving
selective
production
various
products
from
CO
2
electroreduction.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(32)
Опубликована: Май 27, 2024
Abstract
The
practical
application
of
the
electrocatalytic
CO
2
reduction
reaction
(CO
RR)
to
form
formic
acid
fuel
is
hindered
by
limited
activation
molecules
and
lack
universal
feasibility
across
different
pH
levels.
Herein,
we
report
a
doping‐engineered
bismuth
sulfide
pre‐catalyst
(BiS‐1)
that
S
partially
retained
after
electrochemical
reconstruction
into
metallic
Bi
for
RR
formate/formic
with
ultrahigh
performance
wide
range.
best
BiS‐1
maintains
Faraday
efficiency
(FE)
~95
%
at
2000
mA
cm
−2
in
flow
cell
under
neutral
alkaline
solutions.
Furthermore,
catalyst
shows
unprecedentedly
high
FE
(~95
%)
current
densities
from
100
1300
acidic
Notably,
density
can
reach
700
while
maintaining
above
90
membrane
electrode
assembly
electrolyzer
operate
stably
150
h
200
.
In
situ
spectra
functional
theory
calculations
reveals
doping
modulates
electronic
structure
effectively
promotes
formation
HCOO*
intermediate
generation.
This
work
develops
efficient
stable
electrocatalysts
sustainable
production.
ACS Catalysis,
Год журнала:
2025,
Номер
unknown, С. 1018 - 1026
Опубликована: Янв. 2, 2025
Polymeric
carbon
nitrides
(PCNs),
usually
the
melon
phase,
have
been
extensively
applied
as
photocatalysts
for
CO2
reduction;
however,
their
performance
is
still
unsatisfactory.
The
condensed
allotrope,
namely,
poly(triazine
imide)
(PTI)
with
extended
conjugation
and
a
crystallized
structure,
indeed
holds
more
favorable
compositional
structural
advantages
photocatalytic
reduction
but
remains
to
be
fully
exploited.
Herein,
hexagonal
prism-shaped
PTI
crystals
were
synthesized
developed
high-performance
photocatalyst
reduction.
With
Co(bpy)32+
cocatalyst,
exhibit
CO
evolution
rate
of
44
μmol
h–1
(i.e.,
1467
g–1
h–1)
93%
selectivity,
markedly
superior
that
counterpart.
Moreover,
manifest
an
apparent
quantum
efficiency
12.9%
at
365
nm,
representing
state-of-the-art
value
by
PCN
CO2-to-CO
without
using
noble
metals.
surface
pyridine
N
species
are
exposed
active
sites
dominate
activation
conversion,
which,
together
high
crystallinity
facilitate
charge
separation
transport,
endows
efficiency.
In
situ
diffuse
reflectance
infrared
Fourier
transform
spectroscopy
determines
key
intermediates
during
reaction
and,
consequently,
constructs
possible
mechanism.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(3), С. 911 - 918
Опубликована: Фев. 9, 2024
Producing
chemicals
and
fuels
via
direct
electrolysis
of
dilute
CO2
derived
from
industrial
point
sources
can
improve
the
economic
feasibility
technology,
yet
it
suffers
many
challenges
owing
to
unfavorable
mass
transport,
reaction
thermodynamics,
kinetics.
Here
we
report
a
molecular
enhancement
strategy
for
stream
with
10%
concentration
in
typical
flue
gas,
using
commercially
available
cobalt
phthalocyanine
(CoPc)
catalyst.
A
poly(4-vinylpyridine)
(P4VP)-modified
CoPc
electrode
exhibits
remarkable
CO
partial
current
density
252
mA
cm–2
Faradaic
efficiency
90%
under
feed,
2.24-fold
higher
than
that
bare
electrode.
The
integration
molecule
P4VP
modifier
abundant
pyridine
moieties
creates
microenvironment
sequentially
capturing
activating
CO2,
thus
resulting
impressive
electrocatalytic
performance.
presented
paves
way
utilization
gas.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(32)
Опубликована: Май 27, 2024
Abstract
The
practical
application
of
the
electrocatalytic
CO
2
reduction
reaction
(CO
RR)
to
form
formic
acid
fuel
is
hindered
by
limited
activation
molecules
and
lack
universal
feasibility
across
different
pH
levels.
Herein,
we
report
a
doping‐engineered
bismuth
sulfide
pre‐catalyst
(BiS‐1)
that
S
partially
retained
after
electrochemical
reconstruction
into
metallic
Bi
for
RR
formate/formic
with
ultrahigh
performance
wide
range.
best
BiS‐1
maintains
Faraday
efficiency
(FE)
~95
%
at
2000
mA
cm
−2
in
flow
cell
under
neutral
alkaline
solutions.
Furthermore,
catalyst
shows
unprecedentedly
high
FE
(~95
%)
current
densities
from
100
1300
acidic
Notably,
density
can
reach
700
while
maintaining
above
90
membrane
electrode
assembly
electrolyzer
operate
stably
150
h
200
.
In
situ
spectra
functional
theory
calculations
reveals
doping
modulates
electronic
structure
effectively
promotes
formation
HCOO*
intermediate
generation.
This
work
develops
efficient
stable
electrocatalysts
sustainable
production.
ACS Catalysis,
Год журнала:
2024,
Номер
unknown, С. 13697 - 13722
Опубликована: Авг. 30, 2024
Electrocatalytic
carbon
dioxide
reduction
(CO2RR)
over
Cu-based
catalysts
has
emerged
as
a
promising
strategy
for
value-added
artificial
cycling,
addressing
the
current
climate
and
energy
challenges.
However,
product
selectivity
long-term
stability
of
are
limited
by
their
instability
at
constant
potential.
Recent
advancements
in
pulsed
techniques
aim
to
overcome
these
limitations,
enhancing
industrial
feasibility
CO2RR
systems.
This
review
critically
examines
recent
research
progress
catalysts,
offering
comprehensive
synthesis
findings.
Key
pulse
parameters
characterization
strategies
explored
uncover
mechanisms
behind
enhanced
performance.
The
focus
is
on
surface
reconstruction,
encompassing
regeneration
stabilization
Cu
oxidation
states
alongside
morphological
evolution,
while
also
discussing
microenvironment
changes,
including
local
CO2
concentration,
pH,
ionic
arrangement.
intricate
modulation
mode,
potential,
duration
performance
elucidated,
highlighting
interconnections.
Finally,
we
identify
prevailing
challenges
propose
future
directions
achieving
environmentally
friendly
economically
viable
cycling.
By
providing
insightful
perspectives
optimizing
CO2RR,
this
paves
way
developing
more
efficient
robust
catalytic
