Tailoring the Desorption Behavior of Hygroscopic Gels for Atmospheric Water Harvesting in Arid Climates DOI Creative Commons
Hengyi Lu, Wen Shi, James H. Zhang

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(37)

Published: July 28, 2022

The ubiquitous nature of atmospheric moisture makes it a significant water resource available at any geographical location. Atmospheric harvesting (AWH) technology, which extracts from the ambient air to generate clean water, is promising strategy realize decentralized production. high uptake by salt-based sorbents them attractive for AWH, especially in arid environments. However, they often have relatively desorption heat, rendering release an energy-intensive process. A LiCl-incorporating polyacrylamide hydrogel (PAM-LiCl) capable effective environments proposed. interactions between hydrophilic network and captured more free weakly bonded significantly lowering heat compared with conventional neat salt sorbents. Benefiting affinity swelling polymer backbones, developed PAM-LiCl achieves ≈1.1 g g-1 20% RH fast sorption kinetics ≈0.008 min-1 further demonstrates daily yield up ≈7 this condition. These findings provide new pathway synthesis materials efficient absorption/desorption properties, reach energy-efficient AWH climates.

Language: Английский

High-yield solar-driven atmospheric water harvesting of metal–organic-framework-derived nanoporous carbon with fast-diffusion water channels DOI
Yan Song, Ning Xu, Guoliang Liu

et al.

Nature Nanotechnology, Journal Year: 2022, Volume and Issue: 17(8), P. 857 - 863

Published: May 26, 2022

Language: Английский

Citations

167
Self-sustained electricity generator driven by the compatible integration of ambient moisture adsorption and evaporation DOI Creative Commons

Jin Tan,

Sunmiao Fang, Zhuhua Zhang

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: June 25, 2022

Generating sustainable electricity from ambient humidity and natural evaporation has attracted tremendous interest recently as it requires no extra mechanical energy input is deployable across all weather geography conditions. Here, we present a device prototype for enhanced power generation humidity. This uses both heterogenous materials assembled LiCl-loaded cellulon paper to facilitate moisture adsorption carbon-black-loaded promote water evaporation. Exposing such centimeter-sized can produce voltages of around 0.78 V current 7.5 μA, which be sustained more than 10 days. The electric output durability are due the continuous flow that directed by through numerous, negatively charged channels within papers. voltage exhibit an excellent scaling behavior upon integration sufficiently commercial devices including even cell phones. results open promising prospect based on synergy between spontaneous

Language: Английский

Citations

165
Tillandsia‐Inspired Hygroscopic Photothermal Organogels for Efficient Atmospheric Water Harvesting DOI
Feng Ni, Nianxiang Qiu, Peng Xiao

et al.

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(43), P. 19237 - 19246

Published: July 23, 2020

Abstract Tillandsia species with degenerated roots have evolved into hygroscopic leaves that absorb moisture from air. This interesting biological adaptability has inspired us to develop an integrated photothermal organogel (POG) achieve a solar‐powered atmospheric water harvesting (AWH). The well‐designed hydrophilic co‐polymeric skeleton is fabricated accommodate glycerin medium, which enables the POG self‐contained property, mechanically flexibility and synergistic enhancement of sorption. integration interpenetrated component poly‐pyrrole‐dopamine (P‐Py‐DA) can endow efficient solar‐to‐thermal property for controllable solar‐driven interfacial releasing. equilibrium sorption 16.01 kg m −2 at RH 90 %, daily production as high 2.43 day −1 achieved in actual outdoor experiments.

Language: Английский

Citations

153
Solar-powered nanostructured biopolymer hygroscopic aerogels for atmospheric water harvesting DOI

Mengzhu Wang,

Tianmeng Sun, Dehui Wan

et al.

Nano Energy, Journal Year: 2020, Volume and Issue: 80, P. 105569 - 105569

Published: Nov. 5, 2020

Language: Английский

Citations

146
Tailoring the Desorption Behavior of Hygroscopic Gels for Atmospheric Water Harvesting in Arid Climates DOI Creative Commons
Hengyi Lu, Wen Shi, James H. Zhang

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(37)

Published: July 28, 2022

The ubiquitous nature of atmospheric moisture makes it a significant water resource available at any geographical location. Atmospheric harvesting (AWH) technology, which extracts from the ambient air to generate clean water, is promising strategy realize decentralized production. high uptake by salt-based sorbents them attractive for AWH, especially in arid environments. However, they often have relatively desorption heat, rendering release an energy-intensive process. A LiCl-incorporating polyacrylamide hydrogel (PAM-LiCl) capable effective environments proposed. interactions between hydrophilic network and captured more free weakly bonded significantly lowering heat compared with conventional neat salt sorbents. Benefiting affinity swelling polymer backbones, developed PAM-LiCl achieves ≈1.1 g g-1 20% RH fast sorption kinetics ≈0.008 min-1 further demonstrates daily yield up ≈7 this condition. These findings provide new pathway synthesis materials efficient absorption/desorption properties, reach energy-efficient AWH climates.

Language: Английский

Citations

143