ACS Applied Materials & Interfaces,
Journal Year:
2022,
Volume and Issue:
14(12), P. 14492 - 14503
Published: March 18, 2022
Metallic
(1T)
molybdenum
disulfide
(MoS2)
is
a
much
better
electrocatalyst
than
the
semiconducting
(2H)
MoS2
because
of
its
superior
conductivity,
presence
active
basal
planes,
and
bulky
interlayers.
However,
lack
thermodynamic
stability
has
hindered
practical
uses.
The
insertion
transition
metals
nonmetals
in
interlayers
crystal
known
to
improve
both
catalytic
efficacy
1T-MoS2.
In
this
study,
for
first
time
we
have
developed
an
water
splitting
based
on
metallic
copper
sulfide
(1T-CMS).
present
catalyst,
P-doped
intercalated
1T-CMS
ultrathin
2D
nanosheets
carbon
cloth
(P-1T-CMS@CC),
demonstrates
excellent
hydrogen
evolution
reaction
(HER)
oxygen
(OER).
It
required
overpotential
95
mV
HER
284
OER
at
current
density
10
mA
cm-2.
P-1T-CMS@CC(+
-)
device
also
shows
performance,
requiring
cell
voltage
only
1.51
V
InfoMat,
Journal Year:
2023,
Volume and Issue:
6(1)
Published: Nov. 27, 2023
Abstract
Electrochemical
water
splitting
represents
a
promising
technology
for
green
hydrogen
production.
To
design
advanced
electrocatalysts,
it
is
crucial
to
identify
their
active
sites
and
interpret
the
relationship
between
structures
performance.
Materials
extensively
studied
as
electrocatalysts
include
noble‐metal‐based
(e.g.,
Ru,
Ir,
Pt)
non‐noble‐metal‐based
3d
transition
metals)
compounds.
Recently,
advancements
in
characterization
techniques
theoretical
calculations
have
revealed
novel
unusual
sites.
The
present
review
highlights
latest
achievements
discovery
identification
of
various
unconventional
electrochemical
splitting,
with
focus
on
state‐of‐the‐art
strategies
determining
true
establishing
structure–activity
relationships.
Furthermore,
we
discuss
remaining
challenges
future
perspectives
development
next‐generation
By
presenting
fresh
perspective
reaction
involved
this
aims
provide
valuable
guidance
study
industrial
applications.
image
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(23)
Published: April 7, 2023
Abstract
Methane
conversion
to
higher
hydrocarbons
requires
harsh
reaction
conditions
due
high
energy
barriers
associated
with
C−H
bond
activation.
Herein,
we
report
a
systematic
investigation
of
photocatalytic
oxidative
coupling
methane
(OCM)
over
transition‐metal‐loaded
ZnO
photocatalysts.
A
1
wt
%
Au/ZnO
delivered
remarkable
C
2
‐C
4
hydrocarbon
production
rate
683
μmol
g
−1
h
(83
selectivity)
under
light
irradiation
excellent
photostability
two
days.
The
metal
type
and
its
interaction
strongly
influence
the
selectivity
toward
C−C
products.
Photogenerated
Zn
+
‐O
−
sites
enable
CH
activation
methyl
intermediates
(*CH
3
)
migrating
onto
adjacent
nanoparticles.
nature
*CH
‐metal
controls
OCM
In
case
Au,
strong
d‐σ
orbital
hybridization
reduces
metal‐C−H
angles
steric
hindrance,
thereby
enabling
efficient
coupling.
Findings
indicate
center
may
be
suitable
descriptor
for
predicting
product
during
metal/ZnO
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(15)
Published: Feb. 18, 2023
Transition-metal-based
oxyhydroxides
are
efficient
catalysts
in
biomass
electrooxidation
towards
fossil-fuel-free
production
of
valuable
chemicals.
However,
identification
active
sites
remains
elusive.
Herein,
using
cobalt
oxyhydroxide
(CoOOH)
as
the
archetype
and
electrocatalyzed
glucose
oxidation
reaction
(GOR)
model
reaction,
we
track
dynamic
transformation
electronic
atomic
structure
catalyst
a
suite
operando
ex
situ
techniques.
We
reveal
that
two
types
reducible
Co3+
-oxo
species
afforded
for
GOR,
including
adsorbed
hydroxyl
on
ion
(μ1
-OH-Co3+
)
di-Co3+
-bridged
lattice
oxygen
(μ2
-O-Co3+
).
Moreover,
theoretical
calculations
unveil
μ1
is
responsible
oxygenation,
while
μ2
mainly
contributes
to
dehydrogenation,
both
key
oxidative
steps
glucose-to-formate
transformation.
This
work
provides
framework
mechanistic
understanding
complex
near-surface
chemistry
metal
electrorefining.
