Fabrication of PEDOT microtubes wrapped into honeycomb chitosan beads for atmospheric water harvesting

Lin, Yuh-Lang; Zhao, Xiao‐Jun; Jin, Qi; Chen, Yang; Yang, Weiting; Pan, Qinhe; Chen, Yan; Wang, Fuxiang

doi:10.1007/s10934-022-01380-5

Cited by 2 publications

(1 citation statement)

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“…These results further indicated that SCAC has good structural stability. The water absorption performance of SCAC was significantly superior to most of the reported hygroscopic materials (Figure f). ,− Furthermore, the water absorption rate of the hygroscopic agent was an indicator for judging the hygroscopicity. As can be seen from Table S2, the water absorption rate of SCAC was also much higher than that of the other hygroscopic agents in the Table.…”

Section: Resultsmentioning

confidence: 99%

Green Synthesis of Polyurethane Sponge-Grafted Calcium Alginate with Carbon Ink Aerogel with High Water Vapor Harvesting Capacity for Solar-Driven All-Weather Atmospheric Water Harvesting

Liu,

Xu,

Wang

et al. 2024

Langmuir

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Atmospheric water harvesting (AWH) technology is a new strategy for alleviating freshwater scarcity. Adsorbent materials with high hygroscopicity and high photothermal conversion efficiency are the key to AWH technology. Hence, in this study, a simple and large-scale preparation for a hygroscopic compound of polyurethane (PU) sponge-grafted calcium alginate (CA) with carbon ink (SCAC) was developed. The PU sponge in the SCAC aerogel acts as a substrate, CA as a moisture adsorber, and carbon ink as a light adsorber. The SCAC aerogel exhibits excellent water absorption of 0.555−1.40 g•g −1 within a wide range of relative humidity (40−80%) at 25 °C. The SCAC aerogel could release adsorbed water driven by solar energy, and more than 92.17% of the adsorbed water could be rapidly released over a wide solar intensity range of 1.0−2.0 sun. In an outdoor experiment, 57.517 g of SCAC was able to collect 32.8 g of clean water in 6 h, and the water quality meets the drinking water standards set by the World Health Organization. This study suggests a new approach to design promising AWH materials and infers the potential practical application of SCAC aerogel-based adsorbents.

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