A Dual-Function Poly(vinyl alcohol) Hydrogel for Solar Water Production and Thermoelectric Energy Generation
Yuhao Wang,
No information about this author
Ching‐Chieh Hsu,
No information about this author
Shao‐Huan Hong
No information about this author
et al.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 4, 2025
This
work
addresses
the
dual
challenges
of
seawater
purification
and
converting
low-grade
waste
heat
into
electricity,
both
which
are
crucial
for
sustainable
resource
management.
It
presents
a
combined
approach
that
solves
problems
using
self-fabricated
device.
The
device
generates
temperature
gradient
through
efficient
photothermal
conversion
by
placing
thermoelectric
hydrogels
on
top
hydrogel.
Poly(vinyl
alcohol)
(PVA)
is
used
as
matrix
hydrogel
was
selected
its
biocompatibility
ease
processing.
In
order
to
enhance
solar-driven
water
evaporation
efficiency,
ball-milled
dititanium
trioxide
(Ti2O3)
nanoparticles
carbon
nanotubes
(CNTs)
incorporated
within
PVA
matrix.
enables
rate
high
3.22
kg
m–2
h–1.
Additionally,
also
serves
gels,
soaked
with
K3[Fe(CN)6]/K4[Fe(CN)6]
redox
pair
solution
exploit
thermogalvanic
acid
(TGC)
effect.
arrangement
voltage
generation
reactions
at
hot
cold
ends.
obtained
excellent
properties
can
be
characterized
ionic
Seebeck
coefficient
(Si)
1.48
mV
K–1
power
density
9.6
mW
after
nine
were
connected
in
series.
As
result,
this
dual-functional
simultaneously
effectively
purifies
electricity.
Outdoor
testing
shows
daily
production
9.2
stable
130
from
hydrogels.
advances
energy
technologies
opens
new
avenues
innovative
applications
renewable
energy.
Language: Английский
Defect-rich MOF-303 as a dual acid-base heterogeneous catalyst for the one- pot Biginelli synthesis of dihydropyrimidinones
Nuhaa Shaheed,
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Ahmad Shaabani
No information about this author
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 31, 2025
Abstract
Bifunctional
MOF-303
(Al)
exhibits
promising
catalytic
activity
for
the
Biginelli
reaction.
However,
its
intrinsic
microporosity
may
hinder
reactant
and
product
diffusion
reducing
efficiency.
Introducing
defects
is
crucial
enhancing
performance.
In
this
work,
defect-rich
was
prepared
by
grinding
hydrothermally
synthesized
into
a
fine
powder.
The
resulting
material
thoroughly
characterized
exhibited
excellent
performance
in
solvent-free
synthesis
of
diverse
dihydropyrimidinones
under
moderate
reaction
conditions,
achieving
yields
between
94%
over
99%.
Moreover,
catalyst
successfully
recycled
five
cycles
with
minimal
loss.
structures
obtained
products
were
confirmed
IR,
¹H
NMR,
melting
point
analysis.
simple
preparation
method
using
commercially
inexpensive
reagents,
high
mild
recyclability
highlight
potential
as
an
efficient
sustainable
Language: Английский
Photothermal evaporator with low enthalpy of evaporation and hierarchical porous structure for efficient photothermal evaporation
Cai‐Hua Liu,
No information about this author
Lei Xu,
No information about this author
Wang Zhenyu
No information about this author
et al.
Chemical Engineering Journal,
Journal Year:
2025,
Volume and Issue:
unknown, P. 162282 - 162282
Published: April 1, 2025
Language: Английский
Three‐Phase Emulsion Derived Solar‐Thermal Reduced Graphene Oxide/Octadecane Phase‐Change Foam for Salt‐Resistant Day‐Night Water Evaporation
Jing Wu,
No information about this author
Peng Min,
No information about this author
Guang Yin
No information about this author
et al.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 4, 2025
Abstract
A
solar‐thermal
reduced
graphene
oxide/octadecane
(RGO/oct)
phase‐change
foam
is
fabricated
by
the
interfacial
assembly
of
an
air‐in‐oil‐in‐water
three‐phase
emulsion
and
subsequent
chemical
reduction
oxide
(GO)
for
day‐night
evaporation
desalination.
The
GO
sheets
assemble
at
water‐oct
interfaces
in
presence
amphiphilic
alkyl
glycoside
while
air
pores
are
generated
inside
hydrophobic
oct
component
under
stirring,
leading
to
GO/oct/air
microspheres.
During
molding,
chemically
with
ascorbic
acid,
resultant
RGO/oct/air
microspheres
closed
constitute
RGO/oct
foam.
suppress
heat
conduction
bulk
water,
prevents
loss
environment,
hence
enhancing
localization
capability
exhibits
a
high
rate
4.29
kg
m
−2
h
−1
1‐sun
irradiation.
Interestingly,
can
release
latent
absence
solar
light
irradiation,
enabling
water
nighttime
2.30
.
overlap
molding
allows
rearrangement
salt
concentration
gradients,
exhibiting
satisfactory
resistance
during
stable
brine
25
wt.%
NaCl
10
h.
Language: Английский
One-pot synthesis of composite metal-organic framework for enhanced water adsorption: Feasibility and mechanism exploration
Desalination,
Journal Year:
2024,
Volume and Issue:
unknown, P. 118251 - 118251
Published: Oct. 1, 2024
Language: Английский
Hydrates of N-((10-Chloroanthracen-9-yl)methyl)-3-(1H-imidazol-1-yl)propan-1-ammonium Cobalt(II), Copper(II), and Zinc(II) 2,6-Pyridinedicarboxylate: Reversible Crystallization
ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(48), P. 47848 - 47856
Published: Nov. 19, 2024
In
a
quest
to
explore
interconvertible
assemblies
of
hydrates
cobalt(II),
copper(II),
and
zinc(II)
2,6-pyridinedicarboxylate
(26-pdc),
complexes
having
cation
chloro-substituted
analogue
N-{(10-chloroanthracen-9-yl)methyl}-3-(1H-imidazol-1-yl)propan-1-amine
were
investigated.
the
case
cobalt
copper
complexes,
crystallized
stable
hydrate
less
methanol
guided
by
concentration-dependent
crystallizations.
The
unit-cells
crystals
two
each
belong
P1̅
space
group
but
have
different
stoichiometries
as
well
large
differences
in
packing.
These
could
be
reversibly
predictable
manner.
unit-cell
volumes
complex
four-times
smaller
than
that
respective
form
(C2/c
group),
whereas
similar
had
two-times
volume
form.
cations
forms
assembled
together
formed
zigzag
ladder-like
chains.
spaces
present
between
chains
filled
with
clusters
face
stacked
anions.
transformation
required
bottom-up
building
process
starting
from
hydrates.
Fluorescence
spectroscopic
studies
showed
possibility
zinc-complex
solution,
crystallization
yielded
only
Language: Английский