The Journal of Physical Chemistry C,
Journal Year:
2024,
Volume and Issue:
128(16), P. 6702 - 6710
Published: April 11, 2024
The
electrocatalytic
reduction
of
CO2
(CO2RR)
to
high
market
value
HCOOH
is
highly
attractive
and
challenging
in
chemistry.
p-Block
metals
(Sn,
Bi,
In,
Pb,
Sb)
are
promising
candidates
trigger
formate
due
their
specific
stabilization
the
HCOO*
intermediate,
while
overpotential
low
selectivity
have
now
limited
its
practical
application.
Herein,
we
rationally
designed
a
series
p-block
single
atom
anchored
MoS2
monolayer
catalysts
for
efficient
electroreduction
by
DFT
methods.
systematic
thermal
evaluation
demonstrates
that
Sn,
Sb,
Tl,
Bi
atoms
could
be
atomically
dispersed
on
1T-MoS2
with
stability
potentially
synthesized
experiment.
We
reveal
catalytic
CO2RR
activity
metal
correlated
degree
charge
transfer
between
substrate,
higher
distribution
induced
stronger
interaction
HCOO
intermediate.
Among
six
concept
SACs,
Sb-
Bi-atom-supported
identified
as
most
produce
HCOOH,
offering
excellent
energy
efficiency
against
hydrogen
evolution
reaction.
Journal of CO2 Utilization,
Journal Year:
2024,
Volume and Issue:
82, P. 102756 - 102756
Published: April 1, 2024
Hydrogen
(H2)
is
increasingly
recognized
as
a
key
player
in
the
journey
towards
carbon
neutrality,
with
ammonia
(NH3)
and
formic
acid
(FA)
emerging
significant
hydrogen
vectors.
This
review
highlights
advancements
catalyst
efficiency
for
FA
synthesis
from
CO2,
particularly
bismuth
(Bi)
tin
(Sn)
catalysts.
It
investigates
diverse
NH3
production
methodologies,
such
electrochemical,
thermochemical,
photochemical
processes,
underscores
integration
of
renewables
to
address
their
energy
demands.
The
study
also
reviews
novel
materials
like
metal-organic
frameworks
(MOFs)
carbon-based
catalysts
that
could
enhance
catalytic
effectiveness.
Transitioning
lab-scale
models
industrial-scale
applications
requires
addressing
longevity
process
enhancement,
it
suggests
investigating
hybrid
systems
might
offer
improved
yields.
Concluding
directive
future
research,
advocates
scalable,
economically
viable,
environmentally
sustainable
CO2
conversion
technologies,
underscoring
essential
roles
reduced
emissions.
Journal of CO2 Utilization,
Journal Year:
2024,
Volume and Issue:
85, P. 102865 - 102865
Published: July 1, 2024
This
study
introduces
a
straightforward
synthesis
method
for
producing
hybrid
material
composed
of
halloysite
and
kojic
acid,
which
catalyzes
carbon
dioxide
(CO2)
conversion
processes.
Kojic
derived
from
malted
rice
fermentation,
exhibits
inherent
chelating
properties
that
facilitate
the
introduction
copper
ions
onto
material's
surface.
Copper
ions,
an
economically
viable
alternative
to
noble
metals,
catalyze
CO2
reactions
effectively.
The
catalyst
was
evaluated
two
distinct
pathways:
photocatalytic
methane
production
under
simulated
sunlight
fixation
into
cyclic
carbonates
via
epoxide
reactions.
demonstrates
remarkable
catalytic
activity
mild
conditions,
achieving
high
efficiencies
at
45
°C
70
carbonate
atmospheric
pressure.
Conversion
31
%
89
were
achieved
reduction
fixation,
respectively.
FT-IR
spectra
confirmed
functionalization
material.
Additionally,
its
organic/inorganic
nature
is
complemented
by
excellent
thermal
stability,
as
studied
TGA.
It
enables
repeated
utilization,
maintaining
25
after
fourth
reuse.
research
highlights
potential
using
naturally
materials
sustainable
mitigation.
Catalysis Today,
Journal Year:
2024,
Volume and Issue:
429, P. 114505 - 114505
Published: Jan. 2, 2024
The
photoelectrochemical
reduction
of
CO2
to
value-added
products
represents
a
promising
strategy
for
mitigating
emissions.
However,
further
research
efforts
need
be
undertaken
enable
the
technology
scale-up,
including
design
and
fabrication
efficient
photoelectrodes
capable
yielding
substantial
photogenerated
current
densities.
In
this
work,
photoanode
combining
commercial
calcium
titanate
perovskite
(CaTiO3)
BiVO4
layers
coated
onto
transparent
FTO
substrate
by
automated
spray
pyrolysis
is
proposed.
Different
configurations
are
tested,
with
most
favourable
results
achieved
when
positioned
as
top
layer
back
illumination.
optimization
catalytic
loading
also
assessed,
finding
an
optimal
at
1
mg
cm-2
CaTiO3
3
BiVO4,
resulting
in
impressive
density
–71
mA
–1.8
V
vs.
Ag/AgCl.
This
then
integrated
into
electrolyzer
continuous
visible
light-driven
gas
phase
formate,
obtaining
concentration
63.8
g
L-1,
Faradaic
Efficiency
79.1%,
solar-to-fuel
conversion
efficiency
7.6%.
These
represent
significant
advancement
development
photoanodes,
offering
promise
future
scalability
processes.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Sept. 7, 2023
For
many
chemical
processes,
high
single-pass
conversion
of
reactants
into
products
reduces
the
need
to
separate
downstream.
However,
low-temperature
carbon
dioxide
electrolyzers
that
maximize
suffer
from
low
product
concentration.
Maximizing
concentration
is
therefore
a
more
meaningful
target
for
CO2
than
maximizing
conversion.
The
authors
comment
