Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 30, 2025
Abstract
Atmospheric
water
harvesting
(AWH)
is
a
promising
approach
to
address
scarcity;
however,
achieving
scalable
and
efficient
materials
remains
critical
challenge.
Herein,
we
present
ambient‐dried
aerogels
composed
of
biobased
(cellulose
nanofibers
sodium
alginate),
integrated
with
metal–organic
frameworks
(MOFs)
hygroscopic
salts
for
effective
AWH.
A
key
innovation
in
this
system
the
functional
incorporation
MOFs
into
aerogel
scaffolds,
where
they
enhance
capture
at
low
relative
humidity
(RH)
contribute
improved
salt
stabilization.
The
matrix
facilitates
ambient
drying,
while
promoting
transport
absorption.
prepared
demonstrate
competitive
uptake
0.32
g/g
25%
RH
3.52
90%
within
12
h.
When
coated
carbon
nanotube
(CNT)
layer,
achieve
solar‐driven
evaporation
efficiency
≈70%.
As
proof
concept,
were
used
create
microclimates
inside
terrarium,
atmospheric
absorbed
by
was
released
under
solar
irradiation
sustain
plant
growth
two
weeks.
This
stategy
can
be
extended
greenhouses,
leveraging
high
waste
heat
enhanced
regeneration,
alongside
ventilation
systems
optimize
collection
efficiency,
representing
transformative
opportunity
sustainable
agriculture.
Solar-driven
interfacial
evaporation
technologies
use
solar
energy
to
heat
materials
that
drive
water
evaporation.
These
are
versatile
and
do
not
require
electricity,
which
enables
their
potential
application
across
the
food,
nexus.
In
this
Review,
we
assess
of
solar-driven
in
clean-water
production,
wastewater
treatment,
resource
recovery.
Interfacial
can
produce
up
5.3
l
m–2
h−1
drinking
using
sunlight
as
source.
Systems
designed
for
food
production
coastal
regions
desalinate
irrigate
crops
or
wash
contaminated
soils.
Technologies
being
developed
simultaneously
both
clean
through
have
reached
204
W
electricity
2.5
h–1
separate
systems.
Other
approaches
combinations
could
potentially
full
spectrum
generate
multiple
products
(such
water,
heating
cooling,
and/or
fuels).
future,
aid
provision
low-resource
rural
settings
lack
reliable
access
these
essentials,
but
systems
must
first
undergo
rigorous,
scaled-up
field
testing
understand
performance,
stability
competitiveness.
This
Review
discusses
manage
wastewater,
recover
resources
energy.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Abstract
Unlike
traditional
water
production
and
electricity
generation,
direct
utilization
of
atmospheric
moisture
is
a
promising
way
to
simultaneously
generate
power.
Here,
tailored
hygroscopic
hydrogel
developed
through
the
coupling
electron
empty
orbitals
lone
pairs,
forming
[metal−N/O]
absorb
active
sites.
The
aims
capture
from
ambient
humidity
transfer
gaseous
liquid
water,
storing
flowable
into
hydrogel.
process
includes
two
stages,
initial
small
amount
chemisorption
on
sites
followed
by
abundant
physisorption
hydroxyls.
Benefiting
surface,
uptake
Ni
0.92
g
−1
at
20
°C
40%
RH,
while
dehydration
temperature
only
40
°C.
Packaging
three
layers
hydrogel,
4
mL
h
drinking
standard
produced
using
9
when
exposed
air
light.
Upon
creating
moist
area
carbon
paper
as
electrodes,
stable
open
circuit
voltage
533.2
mV
generated
in
self‐sustained
manner.
