In-situ constructing cellulose/PVA hydrogel with confinement capillarity for efficient solar interfacial evaporation

Liu, Jiurui; Zhu, Jiyuan; Guo, Shaokang; Liu, Juyang; Lu, Shengyong; Pan, Selina

doi:10.1016/j.desal.2023.116855

Cited by 12 publications

(1 citation statement)

References 48 publications

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“…To enhance the LCST of NIPAm, amphiphilic ionic units were introduced and the mass ratio of monomers was optimized to address the unfavorable properties of NIPAm. Consequently, the LCST of NIPAm was increased to 36 °C. , As shown in Figures i and S3, the top temperature of the DCS-PNIPAm gel increased progressively over time when exposed to sunlight, reaching its LCST after 300 s. The temperature observed on the surface after a time period of 2000 s was around 40.3 °C, showing a rise of around 4.3 °C over its LCST. This rise in temperature facilitated the attainment of the water release condition.…”

Section: Results and Discussionmentioning

confidence: 87%

Robust and Elastic Thermoresponsive Hydrogels with High Swelling Properties for Efficient Solar Water Purification

Cui,

Wu,

Wang

et al. 2024

ACS Appl. Polym. Mater.

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A viable and long-term method for producing clean water at hydrogel interfaces is solar-driven evaporation. This research utilizes the microgel polymerization technique to fabricate DCS-PNIPAm gels that exhibit exceptional swelling capacity and mechanical qualities. Electrostatic forces and hydrogen bonds between molecules occur between the sulfonic acid anions and ammonium cations inside the P(NIPAm-co-DMAPS) chains. Alginate is characterized by a high content of carboxyl and hydroxyl groups, which facilitate the establishment of hydrogen bonding and electrostatic interactions within the P(NIPAm-co-DMAPS) system. Semi-interpenetrating networks are formed in the hydrogel as a result of physical and chemical cross-linking brought on by these interactions. Consequently, the hydrogel's mechanical characteristics and swelling capacity were significantly enhanced, and the water-collecting rate of DCS-PNIPAm reached up to 9.32 kg m −2 h −1 under one sun irradiation. Notably, the sodium alginate (SA) and carbon nanotubes (CNTs) layer of the DCS-PNIPAm gel has excellent filtration properties, which can make it possible to use sunlight to purify water from various contaminated water sources containing dyes, oils, and metals.

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Section: Results and Discussionmentioning

confidence: 87%