In
order
to
achieve
the
sustainable
production
of
hydrogen
fuel,
heterogeneous
photocatalysts
with
inimitable
structure
are
always
desired
for
high-efficiency
and
stable
H2
reaction
from
water
splitting
owing
perfect
structure-activity
relationship.
this
study,
a
novel
metal-free
one-dimensional/two-dimensional
(1D/2D)
heterojunction
is
constructed
by
series
dissolution
diffusion,
recrystallization
in-situ
growth,
self-assembly
process
1-pyrene
carboxaldehyde
(PCHO)
nanoribbons
on
surface
polymeric
carbon
nitride
(PCN)
nanosheets.
The
obtained
1D/2D
can
realize
fast
carrier
transport
along
1D
prevent
recombination
photogenerated
carriers
at
interface.
Furthermore,
intrinsic
Z-scheme
mechanism
within
heterostructure
also
effectively
inhibits
electron-hole
isolates
reduction
oxidation
sites
photocatalytic
reaction.
As
result,
dramatically
enhanced
evolution
(PHE)
activity
achieved
over
1%-PCHO/PCN
sample,
optimal
PHE
rate
which
approximately
5.4
times
that
pure
PCN.
This
work
provides
deep
insight
into
design
exploitation
unique
applied
in
energy
conversion
field.
Advanced Materials,
Год журнала:
2023,
Номер
35(40)
Опубликована: Авг. 2, 2023
Optimizing
charge
transfer
and
alleviating
volume
expansion
in
electrode
materials
are
critical
to
maximize
electrochemical
performance
for
energy-storage
systems.
Herein,
an
atomically
thin
soft-rigid
Co9
S8
@MoS2
core-shell
heterostructure
with
dual
cation
vacancies
at
the
atomic
interface
is
constructed
as
a
promising
anode
high-performance
sodium-ion
batteries.
The
involving
VCo
VMo
soft
MoS2
shell
afford
ionic
pathways
rapid
transfer,
well
rigid
core
acting
dominant
active
component
resisting
structural
deformation
during
charge-discharge.
Electrochemical
testing
theoretical
calculations
demonstrate
both
excellent
Na+
-transfer
kinetics
pseudocapacitive
behavior.
Consequently,
delivers
extraordinary
sodium-storage
(389.7
mA
h
g-1
after
500
cycles
5.0
A
),
superior
those
of
single-phase
counterparts:
assembled
Na3
V2
(PO4
)3
||d-Co9
/S-Gr
full
cell
achieves
energy
density
235.5
Wh
kg-1
0.5
C.
This
finding
opens
up
unique
strategy
broadens
horizons
material
design
storage
conversion.
Abstract
Hydrogen
(H
2
)
has
emerged
as
a
clean
and
versatile
energy
carrier
to
power
carbon‐neutral
economy
for
the
post‐fossil
era.
generation
from
low‐cost
renewable
biomass
by
virtually
inexhaustible
solar
presents
an
innovative
strategy
process
organic
solid
waste,
combat
crisis,
achieve
carbon
neutrality.
Herein,
progress
breakthroughs
in
solar‐powered
H
production
are
reviewed.
The
basic
principles
of
solar‐driven
first
introduced
better
understanding
reaction
mechanism.
Next,
merits
shortcomings
various
semiconductors
cocatalysts
summarized,
strategies
addressing
related
issues
also
elaborated.
Then,
bio‐based
feedstocks
reviewed
with
emphasis
on
effect
photocatalysts
catalytic
systems
performance.
Of
note,
concurrent
value‐added
chemicals
reforming
is
emphasized
well.
Meanwhile,
emerging
photo‐thermal
coupling
that
shows
grand
prospect
maximally
utilizing
entire
spectrum
discussed.
Further,
direct
utilization
hydrogen
green
reductant
producing
via
reactions
highlighted.
Finally,
challenges
perspectives
photoreforming
toward
envisioned.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(10), С. 11445 - 11454
Опубликована: Май 6, 2024
With
a
high
porosity
and
highly
adaptable
topology,
ZIF-67
is
considered
the
most
promising
photocatalyst
has
received
much
attention
development.
However,
photoactive
electron
extraction
rate
of
still
low,
which
major
problem
limiting
its
further
In
this
paper,
based
on
type
I
structure
using
quantum
dots
(QDs)
as
active
site,
we
obtain
QDs@ZIF-67/ZIF-8
heterostructure,
ensures
high-yield
hydrogen
efficiency.
Quantum
dots,
transmission
site
photogenerated
electrons,
improve
carrier
utilization
generated
by
strong
absorption
ability
in
visible-light
region.
Through
careful
characterization,
it
was
found
that
optimal
photocatalytic
4999.7
μmol·g–1·h–1,
value
30
times
higher
than
QDs,
provides
an
innovative
band
gap-matching
design
for
adjusting
charge
transfer
characteristics
QDs
with
narrow
gap,
realizes
efficient
visible
light.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(16), С. 5080 - 5090
Опубликована: Янв. 1, 2024
A
facile
in
situ
modification
strategy
was
developed
to
create
a
unique
NiCo-LDH/CeO
2
hollow
nanosheet.
The
formation
mechanism
and
photocatalytic
hydrogen
production
performance
of
the
heterostructure
catalyst
were
thoroughly
investigated.
Using
advanced
analytical
methods
to
study
aging
in
lithium-sulfur
batteries
uncovers
key
degradation
mechanisms,
offering
insights
that
can
improve
durability,
safety,
and
overall
performance.
