Crystal Growth & Design,
Год журнала:
2024,
Номер
25(1), С. 158 - 170
Опубликована: Дек. 11, 2024
Copper-based
binary
and
ternary
sulfides
have
attracted
significant
attention
due
to
their
excellent
photophysical
properties,
making
them
highly
promising
for
high-performance
photovoltaic
devices.
This
study
focuses
on
the
synthesis
structural
characterization
of
an
air-stable
binuclear
Cu-pyrazinethiolate-phosphine
complex,
which
serves
as
efficient
single-source
molecular
precursor
preparation
CuS
nanoplatelets.
Furthermore,
utility
this
complex
a
versatile
copper-based
sulfides,
such
CuInS2,
Cu2SnS3,
CuSbS2,
has
been
demonstrated.
A
plausible
mechanism
facile
formation
these
materials
is
proposed
based
presence
disulfide
(S–S)
linkages
in
CuS.
The
crystal
structure,
phase
purity,
compositions
nanoparticles
were
confirmed
using
powder
X-ray
diffraction
(PXRD),
photoelectron
spectroscopy
(XPS),
energy-dispersive
(EDS),
area
elemental
mapping.
Electron
microscopic
studies
revealed
two-dimensional
(2D)
nanoplatelet
morphology
with
varied
shapes
sizes.
Ultraviolet–visible
(UV–vis)
diffuse
reflectance
showed
slight
blue
shift
band
gap
compared
bulk
counterparts,
can
be
attributed
quantum
confinement
or
surface
lattice
distortion
effects.
pristine
found
blue-shifted
material.
Prototype
photoelectrochemical
cells,
fabricated
nanoparticles,
exhibit
nice
photocurrent
generation
along
optimum
photoswitching,
poses
suitable
clean-energy
applications.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(39)
Опубликована: Июль 8, 2024
Abstract
Regulating
competitive
reaction
pathways
to
direct
the
selectivity
of
electrochemical
CO
2
reduction
toward
a
desired
product
is
crucial
but
remains
challenging.
Herein,
switching
from
HCOOH
achieved
by
incorporating
Sb
element
into
CuS,
in
which
Cu−S
ionic
bond
coupled
with
S−Sb
covalent
through
bridging
S
atoms
that
elongates
2.24
Å
2.30
Å.
Consequently,
CuS
shorter
exhibited
high
for
producing
HCOOH,
maximum
Faradaic
efficiency
(FE)
72
%.
Conversely,
Cu
3
SbS
4
characterized
an
elongated
most
pronounced
production
FE
60
In
situ
spectroscopy
combined
density
functional
theory
calculations
revealed
altered
length
and
local
coordination
environment
make
*HCOO
binding
energy
weaker
on
compared
CuS.
Notably,
volcano‐shaped
correlation
between
adsorption
strength
*COOH
indicates
as
double‐active
sites
facilitates
*COOH,
thus
results
CO.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(35), С. 23475 - 23484
Опубликована: Янв. 1, 2024
Enhancing
electrochemical
CO
2
reduction
of
Cu
SnS
3
via
surface
polarization
manipulation
proves
effective
for
designing
efficient
-to-formate
electrocatalysts.
Materials Advances,
Год журнала:
2024,
Номер
5(20), С. 7891 - 7978
Опубликована: Янв. 1, 2024
Graphical
abstract
depicting
the
e-CO
2
R
into
valuable
products
using
a
specialized
electrode
setup.
This
process
offers
sustainable
approach
to
reducing
greenhouse
gas
emissions
and
combating
global
warming.
Crystal Growth & Design,
Год журнала:
2024,
Номер
25(1), С. 158 - 170
Опубликована: Дек. 11, 2024
Copper-based
binary
and
ternary
sulfides
have
attracted
significant
attention
due
to
their
excellent
photophysical
properties,
making
them
highly
promising
for
high-performance
photovoltaic
devices.
This
study
focuses
on
the
synthesis
structural
characterization
of
an
air-stable
binuclear
Cu-pyrazinethiolate-phosphine
complex,
which
serves
as
efficient
single-source
molecular
precursor
preparation
CuS
nanoplatelets.
Furthermore,
utility
this
complex
a
versatile
copper-based
sulfides,
such
CuInS2,
Cu2SnS3,
CuSbS2,
has
been
demonstrated.
A
plausible
mechanism
facile
formation
these
materials
is
proposed
based
presence
disulfide
(S–S)
linkages
in
CuS.
The
crystal
structure,
phase
purity,
compositions
nanoparticles
were
confirmed
using
powder
X-ray
diffraction
(PXRD),
photoelectron
spectroscopy
(XPS),
energy-dispersive
(EDS),
area
elemental
mapping.
Electron
microscopic
studies
revealed
two-dimensional
(2D)
nanoplatelet
morphology
with
varied
shapes
sizes.
Ultraviolet–visible
(UV–vis)
diffuse
reflectance
showed
slight
blue
shift
band
gap
compared
bulk
counterparts,
can
be
attributed
quantum
confinement
or
surface
lattice
distortion
effects.
pristine
found
blue-shifted
material.
Prototype
photoelectrochemical
cells,
fabricated
nanoparticles,
exhibit
nice
photocurrent
generation
along
optimum
photoswitching,
poses
suitable
clean-energy
applications.
