Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(48), P. 26133 - 26143
Published: Nov. 17, 2023
The
copper-based
(Cu-based)
electrocatalytic
materials
effectively
carry
out
the
carbon
dioxide
reduction
reaction
(CO2RR)
toward
C2+
products,
yet
superiority
and
stability
of
oxidation
state
Cu
are
still
worth
studying.
Herein,
we
designed
prepared
three
Cu-based
electrocatalysts
with
different
states
to
study
valence
state-activity
relationship.
Among
these
electrocatalysts,
Cu2O
nanosheets
thickness
only
0.9
nm
show
an
extremely
high
Faraday
efficiency
(FEC2+)
∼81%,
FEC2+
has
increase
37%
compared
traditional
CuOx
phase.
ultrathin
two-dimensional
(2D)
nanosheet
structure
abundant
oxygen
vacancies
can
stabilize
improve
selectivity
for
products
in
CO2RR.
In
situ
Raman
spectroscopy
density
functional
theory
calculations
demonstrate
that
rich
Cu+
2D
is
most
suitable
*CO
adsorption
coverage
on
catalyst
surface,
which
promotes
C-C
coupling
This
work
provides
excellent
CO2RR
products.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 3, 2025
High-entropy
metal-organic
frameworks
(HE-MOFs)
hold
promise
as
versatile
materials,
yet
current
rare
examples
are
confined
to
low-valence
elements
in
the
fourth
period,
constraining
their
design
and
optimization
for
diverse
applications.
Here,
a
novel
high-entropy,
defect-rich
small-sized
(32
nm)
UiO-66
(ZrHfCeSnTi
HE-UiO-66)
has
been
synthesized
first
time,
leveraging
increased
configurational
entropy
achieve
high
tolerance
doping
with
metal
ions.
The
lattice
distortion
of
HE-UiO-66
induces
exposure
nodes
create
coordination
unsaturated
sites
concentration
322.4
μmol/g,
which
increases
abundance
Lewis
acid-base
sites,
thereby
achieving
significant
improvement
performance
catalytic
transfer
hydrogenation
(CTH)
reaction.
Systematic
investigation
manifests
that
special
electronic
structure
enhances
interaction
bonding
substrate
molecules
reduces
energy
barrier
hydrogen
process.
Our
approach
offers
new
strategy
constructing
MOFs.
offer
potential
but
existing
largely
limited
restricting
various
defect-rich,
framework
enhance
hydrogenation.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(20), P. 13804 - 13815
Published: Oct. 12, 2023
Rare
earth-based
alloy
nanostructures
show
great
potential
as
materials
in
the
hydrogen
evolution
reaction
(HER),
and
they
have
a
relatively
negative
enthalpy
of
formation
compared
to
traditional
transition
metal
alloys,
which
resist
dissolution
alloys
reaction.
In
addition,
liner
relationship
can
be
observed
d-band
filling
electrochemical
activity.
Therefore,
rare
nanostructure
contains
advantages
transmission
catalysts
performs
better
selectivity
stability.
However,
reduction
potentials
earth
(RE)
group
are
relevantly
low,
typically
less
than
−1.9
V,
synthesis
methods
RE
very
important.
this
Perspective,
we
generalize
preparation
method
their
applications
related
Through
recent
research
on
reaction,
future
development
direction
is
pointed
out.
Fuel Processing Technology,
Journal Year:
2024,
Volume and Issue:
255, P. 108049 - 108049
Published: Feb. 7, 2024
The
technology
of
electrocatalytic
reduction
CO2
to
produce
hydrocarbon
fuels
not
only
alleviates
energy
shortages
but
also
suppresses
the
greenhouse
effect,
demonstrating
enormous
potential
applications.
In
this
context,
we
aim
explore
new
reliable
materials
for
reducing
(CO2RR)
through
electrocatalysis.
Hence,
investigated
performance
Cu3(C12X)2,
where
X
signifies
organic-ligands
(N₁₂H₆,
N₉H₃O₃,
N₉H₃S₃,
N₆O₆,
N₆S₆)
CO2RR
using
density
functional
theory
(DFT).
2D
Cu3(C12X)2
monolayers
show
metallic
characteristics
because
presence
adequate
π
electron
conjugation
network
as-well-as
a
constructive
interaction
between
metal
atom,
organic-ligands,
and
benzene-rings,
with
exception
Cu3(C12N9H3O3)2,
which
displayed
semiconducting
characteristic.
catalytic
activity
can
be
tuned
by
adjusting
organic-ligands'
ability
facilitate
intermediates
complex
(Cu-X4).
Among
all
MOFs,
Cu3(C12N6S6)2
have
excellent
towards
CO
formic
acid.
All
other
demonstrated
dynamic
as
well
superior
selectivity
over
hydrogen
evolution
(HER)
suggesting
that
these
useful
electrocatalysts.
This
study
introduces
concept
building
MOFs
favorable
features
meet
specific
needs
number
research
domains
including
catalysis,
conversion
storage.
