Synthesis of Nanosheets from Layered Bismuth Oxide Bi2.2Sr1.8CaFe2O9 without Using Organic Exfoliation Agents
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
Bismuth
oxide
nanosheets
were
synthesized
through
the
exfoliation
of
layered
compounds
without
any
organic
agents.
The
compound
Bi2.2Sr1.8CaFe2O9,
comprising
Bi–O
layers
and
Sr–Ca–Fe–O
layers,
was
as
starting
material.
selectively
dissolved
by
shaking
in
0.3
M
HNO3
solution,
yielding
aggregates
consisting
solely
bismuth
layers.
Subsequent
ultrasonic
treatment
these
pure
water
led
to
formation
nanosheets.
nanosheet
exhibited
a
higher
photocatalytic
activity
for
H2
production
compared
α-Bi2O3.
Characterization
using
FE-SEM,
AFM,
HAADF-STEM
revealed
that
exhibit
complex
structure.
They
consist
crystalline
framework
ε-bismuth
oxide,
interspersed
with
island-like
regions
amorphous
or
oxide.
Additionally,
self-standing
membranes
nanosheets,
aligned
[001]
direction,
successfully
synthesized.
This
method,
which
involves
partial
dissolution
structure
acid
followed
processing
water,
is
anticipated
be
applicable
other
well.
Язык: Английский
Cu-Thioamide coordination polymers derived Cu-S catalysts for CO2 electroreduction to formate
Fuel,
Год журнала:
2025,
Номер
392, С. 134711 - 134711
Опубликована: Март 2, 2025
Язык: Английский
Grain Boundary-Induced Stabilization of Bi3+/Bi0 Coexistence in β-Bi2O3 for Highly Efficient Electrochemical CO2 Reduction to Formate
Applied Catalysis B Environment and Energy,
Год журнала:
2025,
Номер
unknown, С. 125302 - 125302
Опубликована: Март 1, 2025
Язык: Английский
Theoretical insights into electrochemical CO2 reduction by Bi-based catalysts: single crystals versus mixed phases
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 163047 - 163047
Опубликована: Апрель 1, 2025
Язык: Английский
Quantum-dot-like Bi/Bi2O2CO3 heterostructures via in situ MOF reconstruction toward efficient CO2-to-Formate conversion over a wide potential window
Applied Surface Science,
Год журнала:
2025,
Номер
unknown, С. 163351 - 163351
Опубликована: Апрель 1, 2025
Язык: Английский
Engineering the Stable BiOx Species for Efficient Electroreduction of CO2 into Formic Acid at Ampere-Level Current
Nano Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 14, 2025
BiOx
species
have
been
identified
as
the
most
important
active
for
electroreduction
of
CO2
to
HCOOH
over
Bi-based
materials.
However,
are
unstable
under
high
reduction
current/potential,
limiting
further
industrial
application.
Herein,
we
constructed
robust
by
incorporating
sodion
(Na+)
into
Bi
nanosheets
(denoted
Na-Bi
nanosheets).
The
negatively
charged
anchored
stable
Na+
in
displayed
highly
structural
stability
during
electroreduction.
When
applied
current
density
(j)
was
set
from
-200
-1200
mA
cm-2,
all
faradaic
efficiency
(FE)
HCOO-
(FEHCOO-)
maintained
90%
flow-cell
device,
whereas
FEHCOO-
pure
dramatically
decreased
5%.
Mechanistic
study
revealed
that
Na+-anchored
can
not
only
alter
potential-limiting
step
(PLS)
but
also
decrease
energy
barrier
PLS
HCOOH.
Язык: Английский
Unlocking the In Situ Reconstruction of Bi/Bi2O2CO3 Electrocatalyst Toward Efficiently Converting CO2 into Formate
Advanced Sustainable Systems,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 14, 2024
Abstract
Electrochemical
reducing
CO
2
into
formic
acid
has
been
demonstrated
to
be
an
economically
viable
pathway
relieve
the
greenhouse
effect
and
obtain
value‐added
chemical
feedstocks.
Herein,
Bi/Bi
O
3
is
developed
via
combination
of
sulfur‐assisted
disassembly
in
situ
reconstruction
process.
Profiting
from
enlarged
surface
area
generation
high
active
heterointerface
between
metallic
Bi
,
as‐obtained
exhibits
performance
toward
converting
molecules
formate
(HCOO
−
),
attaining
HCOO
Faradaic
efficiency
(FE
HCOO‐
)
over
97%
current
density
range
200
1000
mA
cm
−2
both
alkaline
(1
m
KOH)
near
neutral
(0.5
KHCO
electrolytes,
along
with
excellent
stability.
In
spectroscopic
data
unraveled
process
S
/Bi
corroborated
that
conversion
through
*
OCHO
intermediate,
deepening
insights
understanding
Bi‐based
electrocatalyst
RR
mechanism.
Язык: Английский