Nature Communications,
Journal Year:
2021,
Volume and Issue:
12(1)
Published: Jan. 29, 2021
Abstract
Metallic
tungsten
disulfide
(WS
2
)
monolayers
have
been
demonstrated
as
promising
electrocatalysts
for
hydrogen
evolution
reaction
(HER)
induced
by
the
high
intrinsic
conductivity,
however,
key
challenges
to
maximize
catalytic
activity
are
achieving
metallic
WS
with
concentration
and
increasing
density
of
active
sites.
In
this
work,
single-atom-V
catalysts
(V
SACs)
substitutions
in
1T-WS
(91%
phase
purity)
fabricated
significantly
enhance
HER
performance
via
a
one-step
chemical
vapor
deposition
strategy.
Atomic-resolution
scanning
transmission
electron
microscopy
(STEM)
imaging
together
Raman
spectroscopy
confirm
atomic
dispersion
V
species
on
instead
energetically
favorable
2H-WS
monolayers.
The
growth
mechanism
SACs@1T-WS
is
experimentally
theoretically
demonstrated.
Density
functional
theory
(DFT)
calculations
demonstrate
that
activated
V-atom
sites
play
vital
important
role
enhancing
activity.
it
opens
novel
path
directly
synthesize
atomically
dispersed
single-metal
metastable
materials
efficient
robust
electrocatalysts.
Chemical Society Reviews,
Journal Year:
2020,
Volume and Issue:
49(12), P. 3981 - 4042
Published: Jan. 1, 2020
Conjugated
porous
polymers
(CPPs)
are
a
class
of
amorphous
polymer
networks
that
are,
in
their
design,
fully
cross-linked
and
π-conjugated.
The
nature
CPPs
means
they
have
permanent
intrinsic
porosity
(on
the
nanometer
scale),
which,
combination
with
π-conjugated
framework,
makes
these
materials
unique
among
wider
polymeric
materials.
In
recent
years,
need
for
new
efficient
functional
has
driven
development
as
versatile
platforms
applications
including
(photo)catalysis,
light
harvesting,
gas
separation
storage,
chemosensing,
environmental
remediation
energy
storage.
efficiency
towards
described
is
heavily
influenced
by
choice
molecular
building
blocks
synthetic
conditions,
allowing
facile
tailoring
optimisation
structure
properties.
aim
this
review
to
highlight
select
works
on
CPPs,
basic
structural
design
principles,
various
protocols
topical
Nature Communications,
Journal Year:
2021,
Volume and Issue:
12(1)
Published: Jan. 29, 2021
Abstract
Metallic
tungsten
disulfide
(WS
2
)
monolayers
have
been
demonstrated
as
promising
electrocatalysts
for
hydrogen
evolution
reaction
(HER)
induced
by
the
high
intrinsic
conductivity,
however,
key
challenges
to
maximize
catalytic
activity
are
achieving
metallic
WS
with
concentration
and
increasing
density
of
active
sites.
In
this
work,
single-atom-V
catalysts
(V
SACs)
substitutions
in
1T-WS
(91%
phase
purity)
fabricated
significantly
enhance
HER
performance
via
a
one-step
chemical
vapor
deposition
strategy.
Atomic-resolution
scanning
transmission
electron
microscopy
(STEM)
imaging
together
Raman
spectroscopy
confirm
atomic
dispersion
V
species
on
instead
energetically
favorable
2H-WS
monolayers.
The
growth
mechanism
SACs@1T-WS
is
experimentally
theoretically
demonstrated.
Density
functional
theory
(DFT)
calculations
demonstrate
that
activated
V-atom
sites
play
vital
important
role
enhancing
activity.
it
opens
novel
path
directly
synthesize
atomically
dispersed
single-metal
metastable
materials
efficient
robust
electrocatalysts.