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Super Atmospheric Water Harvesting Hydrogel with Alginate Chains Modified with Binary Salts
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-02-21 , DOI: 10.1021/acsmaterialslett.9b00315 Akram Entezari 1 , Mojtaba Ejeian 1 , Ruzhu Wang 1
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-02-21 , DOI: 10.1021/acsmaterialslett.9b00315 Akram Entezari 1 , Mojtaba Ejeian 1 , Ruzhu Wang 1
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Atmospheric water harvesting is considered to be a promising technology to address the global water shortage. However, researchers are still searching for optimized desiccants with all of the desired features, such as high water sorption capacity, low desorption temperature, wide light spectrum absorption, ease to scale up, and low cost. Here, we modified sodium alginate by occupying both G-blocks and M-blocks with more hydrophilic cations (i.e., Li and Ca). Functionalized carbon nanotubes (FCNTs) are embedded in the hydrogel structure to increase solar spectrum absorption. In summary, these features enable binary composite to adsorb ∼5.6 g of water per gram of desiccant. For the first time, the idea of rational combination of a binary hydrophilic polymeric salt was embodied. We believe that this binary/FCNT sorbent is a promising material for application in water sorption-based technologies.
中文翻译：
用二元盐修饰的藻酸盐链的超常压集水凝胶
大气集水被认为是解决全球水资源短缺的有前途的技术。然而，研究人员仍在寻找具有所有所需功能的优化干燥剂，例如高吸水量，低脱附温度，宽光谱吸收，易于规模化和低成本。在这里，我们通过占据具有更多亲水性阳离子（即Li和Ca）的G嵌段和M嵌段来修饰藻酸钠。功能化的碳纳米管（FCNT）嵌入水凝胶结构中，以增加太阳光谱的吸收。总之，这些特性使二元复合材料每克干燥剂可吸附约5.6克水。首次体现了合理组合二元亲水性聚合物盐的想法。
更新日期：2020-02-21
中文翻译：
用二元盐修饰的藻酸盐链的超常压集水凝胶
大气集水被认为是解决全球水资源短缺的有前途的技术。然而，研究人员仍在寻找具有所有所需功能的优化干燥剂，例如高吸水量，低脱附温度，宽光谱吸收，易于规模化和低成本。在这里，我们通过占据具有更多亲水性阳离子（即Li和Ca）的G嵌段和M嵌段来修饰藻酸钠。功能化的碳纳米管（FCNT）嵌入水凝胶结构中，以增加太阳光谱的吸收。总之，这些特性使二元复合材料每克干燥剂可吸附约5.6克水。首次体现了合理组合二元亲水性聚合物盐的想法。
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