Next generation.,
Год журнала:
2024,
Номер
8(1), С. 85 - 85
Опубликована: Ноя. 15, 2024
Nanomaterials
have
emerged
as
a
cornerstone
in
advancing
energy
conversion
technologies,
offering
unparalleled
potential
for
improving
efficiency
and
sustainability.
Their
unique
properties—such
high
surface
area,
tunable
electronic
structure,
quantum
effects—enable
superior
performance
applications
like
solar
cells,
fuel
thermoelectric
devices,
batteries.
By
manipulating
nanoscale
architectures,
researchers
can
enhance
harvesting,
storage,
processes.
This
study
explores
the
role
of
nanomaterials
conversion,
focusing
on
their
design,
synthesis,
application
cutting-edge
technologies.
The
integration
with
advanced
systems
has
shown
significant
to
address
challenges
such
limited
resources
environmental
concerns.
Special
emphasis
is
placed
nanostructured
semiconductors,
dots,
graphene-based
materials
contributions
photovoltaic
catalytic
Despite
advantages,
remain,
including
scalability,
stability,
cost-efficiency.
research
aims
provide
comprehensive
overview
recent
advancements,
evaluate
existing
challenges,
highlight
future
directions
ultimately
contributing
sustainable
future.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Март 8, 2024
Abstract
Nanofluidic
membranes
offer
exceptional
promise
for
osmotic
energy
conversion,
but
the
challenge
of
balancing
ionic
selectivity
and
permeability
persists.
Here,
we
present
a
bionic
nanofluidic
system
based
on
two-dimensional
(2D)
copper
tetra-(4-carboxyphenyl)
porphyrin
framework
(Cu-TCPP).
The
inherent
nanoporous
structure
horizontal
interlayer
channels
endow
Cu-TCPP
membrane
with
ultrahigh
ion
allow
power
density
16.64
W
m
−2
,
surpassing
state
of-the-art
nanochannel
membranes.
Moreover,
leveraging
photo-thermal
property
Cu-TCPP,
light-controlled
active
transport
is
realized
even
under
natural
sunlight.
By
combining
solar
salinity
gradient,
driving
force
reinforced,
leading
to
further
improvements
in
conversion
performance.
Notably,
light
could
eliminate
need
achieving
0.82
symmetric
solution
system.
Our
work
introduces
new
perspective
developing
advanced
solar/ionic
extends
concept
notion
energy.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 21, 2024
Abstract
Generating
electricity
from
salinity‐gradient
waters
with
nanofluidic
structures
is
a
promising
approach
for
achieving
zero‐emission
energy
goals
and
addressing
escalating
crises.
However,
the
ingenious
design
development
of
biomass
membranes
that
satisfy
requirements
sustainability,
low‐cost,
long‐term
stability,
high
output
power
density
crucial
challenge.
This
work
reports
two‐dimensional
(2D)
hierarchical‐structured
chitin
nanosheets
(2D
H‐CNS)
abundant
micro‐/nano‐pore
through
chemical
modification,
acid
vapor
treatment,
ultrasound‐assisted
exfoliation.
The
results
showed
surface
charge
modification
not
only
promotes
loosening
controllable
exfoliation
dense
structure
into
ultra‐thin
2D
H‐CNS
(1.34
nm)
but
also
increases
porosity
enhances
ion
transport
flux
selectivity
nanosheets.
Furthermore,
experimental
simulation
confirm
hierarchical
in
nanosheet‐assembled
(2D‐HM)
substantially
performance,
an
18.5
times
improvement
conductance
over
(2D‐DM).
2D‐HM
embedded
harvesting
system
achieved
2.59
W
m
−2
,
2.51
2D‐DM.
study
all‐biomass
materials
high‐performance
osmotic
harvesting.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 8, 2024
Abstract
Osmotic
energy
conversion
based
on
reverse
electrodialysis
(RED)
technology
has
attracted
intense
attention.
As
the
key
component,
ion‐selective
membranes
should
meet
basic
requirements
of
high
power
density,
mechanical
strength,
and
easy
preparation.
Polyelectrolyte
hydrogel
materials
are
good
candidates,
due
to
their
charge
density.
However,
severe
swelling
effect
decreases
ion
selectivity
strength.
To
solve
this
problem,
an
anti‐swelling
3D
nanohydrogel
is
demonstrated,
which
in
situ
polymerized
nanoporous
polyimide
(PI)
membrane,
exhibiting
ultrahigh
density
osmotic
conversion.
Because
nano‐confinement
PI
matrix,
ratio
37.5%
from
593.2%
bulk
hydrogel.
Meanwhile,
hybrid
membrane
exhibits
excellent
strength
(≈89.5
MPa).
Under
a
500‐fold
concentration
gradient,
generates
up
48.5
W
m
−2
,
one
order
magnitude
higher
than
that
The
introduces
new
concept
designing
separation
for
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 4, 2024
Abstract
The
unique
selective
ion‐transport
characteristics
of
nanofluids
make
them
applicable
in
energy
harvesting
and
sensing.
However,
developing
scalable,
self‐powered
nanofluidic
devices
remains
challenging
due
to
high
cost,
processing
complexity,
reliance
on
external
power
sources.
In
this
work,
surface‐twisted,
internally
aligned
algae
fibers
(twisted
fibers)
are
fabricated
using
an
asymmetric
flow
field
regulate
the
assembly
process
cellulose
nanofibers.
Unlike
from
symmetrical
process,
flow‐mediated
twisted
exhibit
a
significantly
reduced
diameter
(33.6–20.4
µm),
increased
packing
density
(0.87–1.47
g
cm
−3
),
superior
fractured
stress
(249.4–468.5
MPa),
enhanced
Herman's
orientation
parameter
(from
0.77
0.89).
Importantly,
demonstrate
energy‐harvesting
up
12.87
W
m
−2
under
50‐fold
salinity
gradient
can
serve
as
urine
monitors,
effectively
distinguishing
infants'
urination
motility
behaviors
alerting
saturation
ionic
conductivity
(7.8
mS
−1
)
at
dilute
electrolyte
concentrations.
This
study
provides
novel
design
concept
for
biomass‐based
health
sensing
system.
