Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(19)
Published: Jan. 9, 2024
Abstract
Large‐scale
photocatalytic
water‐splitting
panel
reactor
system
is
developed
and
demonstrated
its
commercial
feasibility.
However,
water
scarcity
one
of
the
leading
challenges
for
sustainable
development
hydrogen
generation
in
a
well‐lit
area.
Here,
harvesting
form
air‐photothermal
evaporation‐photocatalytic
evolution
(AWPH)
devised.
The
hybrid
comprising
carbonized
wood
(CWx)
combined
with
hygroscopic
salt
ZnCl
2
Pt‐modified
g‐C
3
N
4
nanosheets
(Pt‐CN)
as
photocatalyst
developed,
which
has
vertical
pore
structure
that
can
provide
attachment
sites
salt.
adsorbed
by
driven
along
channels
to
due
photothermal
conversion
effect.
bi‐phase
interfaces
vapor/photocatalyst/hydrogen
produced
photothermal‐photocatalytic
significantly
reduce
interface
barrier
substantially
lower
resistance
transport.
CW550
exhibited
uptake
0.56
g
−1
yield
21.99
µmol
cm
−2
under
100
mW
illumination
at
flow
rate
mL
min
5
h
half
atmospheric
pressure.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Sept. 15, 2022
Abstract
Sorption-based
atmospheric
water
harvesting
has
the
potential
to
realize
production
anytime,
anywhere,
but
reaching
a
hundred-gram
high
yield
in
semi-arid
climates
is
still
challenging,
although
state-of-the-art
sorbents
have
been
used.
Here,
we
report
portable
and
modularized
harvester
with
scalable,
low-cost,
lightweight
LiCl-based
hygroscopic
composite
(Li-SHC)
sorbents.
Li-SHC
achieves
uptake
capacity
of
1.18,
1.79,
2.93
g
−1
at
15%,
30%,
60%
RH,
respectively.
Importantly,
considering
large
mismatch
between
capture
release
rates,
rationally
designed
batch
processing
mode
proposed
pursue
maximum
single
diurnal
cycle.
Together
advanced
thermal
design,
shows
an
exceptional
311.69
day
1.09
sorbent
climate
extremely
low
RH
~15%,
demonstrating
adaptability
possibility
achieving
large-scale
reliable
real
scenarios.
Device,
Journal Year:
2023,
Volume and Issue:
1(4), P. 100099 - 100099
Published: Oct. 1, 2023
Atmospheric
water
harvesting
(AWH)
is
a
promising
approach
to
providing
fresh
areas
without
access
large
bodies
of
freshwater
and
mitigating
imbalanced
distribution.
Besides
material
innovations,
researchers
have
explored
different
design
strategies
for
these
AWH
devices,
which
can
be
divided
into
monocyclic
multicyclic
types.
Monocyclic
harvesters
further
categorized
those
using
upward
vapor
escape,
research
efforts
focused
on
reducing
top
cover
heating
increasing
sorption
capacity,
downward
heat
recycling
cooling
enhance
condensation
efficiency.
Notably,
some
devices
utilize
radiative
require
zero
external
energy
input.
For
harvesters,
optimizing
the
sorbents'
uptake
kinetics
device
geometry
guarantee
continuous
harvesting.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(43)
Published: Aug. 12, 2022
Water
scarcity
caused
by
climate
change
and
population
growth
poses
a
grave
threat
to
human
society.
Of
the
different
water
purification
technologies
put
forward,
one
presents
promising
strategy
that
is
spatially
or
temporally
non-restricted-atmospheric
harvesting
(AWH).
Here
we
review
recent
progress
in
design
study
of
AWH
sorbents,
ranging
from
innovative
chemistries
integration
sophisticated
architectures
functional
components,
clarify
structure-property-performance
relationship
governs
capture
release
processes.
Features
limitations
each
type
sorbents
are
summarized
elucidate
optimal
working
environments
modes.
Progress
applications
extending
generation
thermal
management
agriculture
discussed.
Future
developments
regarding
material
modifications,
performance
measurements,
system
optimizations
provided
overcome
lingering
barriers
sorbent
implementation.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(1)
Published: Sept. 11, 2023
Abstract
Hygroscopic
salt‐based
composite
sorbents
are
considered
ideal
candidates
for
solar‐driven
atmospheric
water
harvesting.
The
primary
challenge
the
lies
in
exposing
more
hygroscopically
active
sites
to
surrounding
air
while
preventing
salt
leakage.
Herein,
a
hierarchically
structured
scaffold
is
constructed
by
integrating
cellulose
nanofiber
and
lithium
chloride
(LiCl)
as
building
blocks
through
3D
printing
combined
with
freeze‐drying.
milli/micrometer
multiscale
pores
can
effectively
confine
LiCl
simultaneously
provide
exposed
area
sorption
release,
accelerating
both
evaporation
kinetics
of
printed
structure.
Compared
conventional
freeze‐dried
aerogel,
exhibits
rate
that
increased
1.6‐fold,
along
than
2.4‐fold
greater
release
rate.
An
array
bilayer
scaffolds
demonstrated,
which
produce
0.63
g
−1
day
outdoors
under
natural
sunlight.
This
article
provides
sustainable
strategy
collecting
freshwater
from
atmosphere.
Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
33(7)
Published: Dec. 5, 2022
Abstract
Tuning
the
surface
topography
of
solar
evaporators
is
significance
for
boosting
light
absorption
and
enhancing
solar‐to‐vapor
efficiency.
Herein,
a
novel
strategy
to
manipulate
graphene
oxide
(GO)
via
electrostatic
assembly
coupled
with
in
situ
polymerizations
aniline
reported.
The
GO
fully
hybridized
polyaniline
(PANI)
nanocone
arrays,
manifesting
periodic
structures
highly
foldable
configurations.
Additionally,
PANI
arrays
tune
chemistry
retard
redispersion
into
water,
thus
enabling
corresponding
composite
(PG)
robust
structural
durability.
Featuring
these
intriguing
attributes,
when
applied
as
an
evaporator
pure
PG
delivers
improved
evaporation
performance
1.42
kg
m
−2
h
−1
high
efficiency
96.6%
under
one
sun
illumination.
Further
investigations
reveal
that
periodically
conical
over
strengthen
multiple
reflections
facilitate
heat
localization.
Desalination
test
substantiates
reliability
practical
freshwater
production.
numerical
simulations
optical
microscopy
observation
exhibit
topography‐strengthened
vapor
generation
effect.
This
study
sheds
new
on
rational
manipulation
photothermal
materials
high‐efficiency
evaporation.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(28)
Published: April 9, 2023
Abstract
Safe
and
clean
freshwater
harvesting
from
(organic‐containing)
saline
or
wastewater
holds
great
potential
for
mitigating
water
scarcity
pollution,
but
remains
challenging.
Herein,
a
floating
photothermal/catalytic‐integrated
interfacial
micro‐evaporator
(
g
‐C
3
N
4
@PANI/PS)
is
reported
as
proof‐of‐concept
multifunctional
scavenger
evaporator
system
(MSES)
to
achieve
both
solar‐driven
complete
desalination
organic
degradation.
The
spherical
porous
lightweight
polystyrene
core,
incorporated
with
black
surface
functional
layer
@PANI),
enables
the
hybrid
naturally
float
thereby
collectively
self‐assemble
under
tension
evaporation,
which
achieves
preeminent
self‐cleaning
salt/solute
separation
efficient
photodegradation
rotation.
Remarkably,
high
solar‐vapor
conversion
efficiency
of
≈90%
energy
localization
provides
abundant
active
photocatalytic
sites
on
interface,
further
enhanced
by
photothermal
cooperation.
High
photo‐driven
degradation
efficiencies
99%
nonvolatile
compounds
(non‐VOC)
bisphenol
A
95%
VOC
phenol
in
are
achieved.
An
outdoor
comprehensive
solar
treatment
test
toward
organic‐containing
high‐salinity
sewage
verifies
feasibility
MSES
sustainable
(1.3
kg
m
−2
h
−1
),
downstream
salt
recovery,
This
strategy
may
inspire
an
integrated
solution
scarcity,
energy,
environmental
pollution
carbon
neutrality.
