Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 13, 2024
Abstract
Reprogrammable
shape
morphing
is
ubiquitous
in
living
beings
and
highly
crucial
for
them
to
move
normal
situations,
even
survive
under
dangerous
conditions.
There
increasing
interest
using
asymmetric
hydrogel
structures
understand
mimic
beings’
upon
an
external
trigger
a
controlled
way.
However,
these
or
heterogeneous
configurations
cannot
be
further
modified
once
the
polymer
hydrogels
are
prepared.
Therefore,
it
great
challenge
achieve
reprogrammable
existing
hydrogels.
Inspired
by
marine
amoebae,
which
transform
into
several
different
morphologies
according
various
salt
concentrations,
new
strategy
developed
salting
reconfigure
their
anisotropy
toward
morphing.
Polyampholyte
with
equal
stoichiometric
COO
−
N
+
(CH
3
)
groups
were
first
swollen
HCl/NaCl
solution.
After
being
then
transferred
water,
they
again
water
uptake
driven
osmotic
pressure,
spontaneously
deswollen
due
increase
internal
pH
dialysis
of
ions
leading
deprotonation
COOH
regeneration
/N
electrostatic
attraction.
This
work
provides
novel
soft
actuators
open
up
avenue
Advanced Electronic Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 9, 2025
Abstract
Water
and
energy
are
the
cornerstones
of
human
development,
with
more
than
half
world's
population
facing
water
scarcity
issues.
Atmospheric
moisture
is
widely
distributed
around
globe,
rational
utilization
can
create
tremendous
value.
Here,
sources
hygroscopic
materials,
methods
manufacturing
hydrogels,
properties
these
potential
applications
concluded.
To
make
hydrogels
high
hydrophilicity,
ultrasonic
oscillation,
freeze
drying,
spin
coating
be
used
as
synthesis
strategies.
The
main
focus
on
characteristic
parameters
uptake,
dehydration
temperature,
conductivity,
mechanical
stability,
swelling
behaviors,
heat
transfer
coefficient.
These
unique
features
will
affect
performances
assembles,
devices,
instruments.
Subsequently,
summarized,
such
harvesting
splitting
fuel
production,
dehumidification,
thermal
management
in
electronic
solar
evaporation,
electricity
production.
Finally,
future
directions
issues
interest
proposed
to
promote
diverse
development
relational
systems.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 16, 2025
Abstract
Atmospheric
water
harvesting
(AWH)
provides
a
promising
pathway
to
alleviate
global
stress.
However,
in
arid
areas,
how
solve
the
local
drought
problem
while
making
full
use
of
other
wasted
energy
and
improving
resource
utilization
efficiency
is
still
challenge.
Here,
salt‐based
biodegradable
photothermal
aerogels
with
vertical
channels
are
constructed
efficiently
utilize
waste
heat
from
photovoltaic
(PV)
panels
for
tandem
atmospheric
passive
cooling.
Specially,
hydrogen
bonding
interactions
ionic
cross‐linking
aerogel
porous
skeleton
together
ensure
material's
stability.
This
has
high‐water
adsorption
capacity
(1.4–5.7
g·g
−1
at
30–90%
relative
humidity
(RH)),
solar‐powered
production
up
1.80
·day
.
After
integrating
PV
panels,
collection
evaporation
processes
result
fresh‐water
0.033
kg·m
−2
·h
,
panel
power
generation
increases
by
2.9%.
work
demonstrates
great
potential
AWH
technique
combined
cooling
fully
low‐grade
energy,
promoting
development
advanced
energy‐water
cogeneration.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 11, 2024
Abstract
Reprogrammable
shape
morphing
is
ubiquitous
in
living
beings
and
highly
crucial
for
them
to
move
normal
situations,
even
survive
under
dangerous
conditions.
There
increasing
interest
using
asymmetric
hydrogel
structures
understand
mimic
beings’
upon
an
external
trigger
a
controlled
way.
However,
these
or
heterogeneous
configurations
cannot
be
further
modified
once
the
polymer
hydrogels
are
prepared.
Therefore,
it
great
challenge
achieve
reprogrammable
existing
hydrogels.
Inspired
by
marine
amoebae,
which
transform
into
several
different
morphologies
according
various
salt
concentrations,
new
strategy
developed
salting
reconfigure
their
anisotropy
toward
morphing.
Polyampholyte
with
equal
stoichiometric
COO
−
N
+
(CH
3
)
groups
were
first
swollen
HCl/NaCl
solution.
After
being
then
transferred
water,
they
again
water
uptake
driven
osmotic
pressure,
spontaneously
deswollen
due
increase
internal
pH
dialysis
of
ions
leading
deprotonation
COOH
regeneration
/N
electrostatic
attraction.
This
work
provides
novel
soft
actuators
open
up
avenue
