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Biomass-Based Ferric Tannate Hydrogel with a Photothermal Conversion Function for Solar Water Evaporation
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2023-10-19 , DOI: 10.1021/acsapm.3c02022 Chenyan Zhang 1 , Yuan Jiang 1 , Xinquan Zou 1 , Lu Xing 1 , Wenxiu Liu 1 , Zhonghuang Huang 1 , Yuwei Feng 1 , Jikui Wang 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2023-10-19 , DOI: 10.1021/acsapm.3c02022 Chenyan Zhang 1 , Yuan Jiang 1 , Xinquan Zou 1 , Lu Xing 1 , Wenxiu Liu 1 , Zhonghuang Huang 1 , Yuwei Feng 1 , Jikui Wang 1
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Solar water evaporation is an effective solution for water desalination without the energy use of secondary energy or fossil fuels. A ferric tannate (TA-Fe3+)/sodium alginate (SA-Fe3+)/polyacrylamide (TFSFP) hydrogel was synthesized and constructed as a solar water evaporator (SWE). Tannic acid (TA) and Fe3+ was chelated in situ through a convenient method combined with the cross-linking of SA. Along with an ion cross-linked SA-Fe3+ network, a porous hydrogel with a hydrophilic water transportation network maintained continuous water supply to an evaporation interface. Additionally, the water molecules in the evaporation interface could be activated effectively by the hydrophilic network and TA, which is of benefit to reduce water evaporation enthalpy. A 0.8 TFSFP hydrogel had reduced evaporation enthalpy and broad light absorption with an evaporation rate of 1.53 kg·m–1·h–1 under 1 sun and a photothermal conversion efficiency of 83.34%. With salt resistance and solar light intensity adaption, a 0.8 TFSFP hydrogel SWE could keep evaporating in five cycles and has excellent water desalination ability, which displays potential application in freshwater acquisition.
中文翻译：
具有光热转换功能的生物质单宁酸铁水凝胶用于太阳能水蒸发
太阳能水蒸发是一种有效的海水淡化解决方案，无需使用二次能源或化石燃料。合成了单宁铁（TA-Fe 3+）/海藻酸钠（SA-Fe 3+）/聚丙烯酰胺（TFSFP）水凝胶，并将其构建为太阳能水蒸发器（SWE）。通过简便的方法结合SA的交联，将单宁酸(TA)和Fe 3+进行原位螯合。与离子交联的 SA-Fe 3+网络一起，具有亲水性水传输网络的多孔水凝胶保持对蒸发界面的连续供水。此外，亲水网络和TA可以有效激活蒸发界面中的水分子，有利于降低水的蒸发焓。0.8 TFSFP水凝胶具有降低的蒸发热函和广泛的光吸收，在1太阳下的蒸发率为1.53 kg·m –1 ·h –1 ，光热转换效率为83.34%。0.8 TFSFP水凝胶SWE具有耐盐性和太阳光强度适应能力，可以在五个周期内持续蒸发，并具有优异的海水淡化能力，在淡水采集方面具有潜在的应用前景。
更新日期：2023-10-19
中文翻译：
具有光热转换功能的生物质单宁酸铁水凝胶用于太阳能水蒸发
太阳能水蒸发是一种有效的海水淡化解决方案，无需使用二次能源或化石燃料。合成了单宁铁（TA-Fe 3+）/海藻酸钠（SA-Fe 3+）/聚丙烯酰胺（TFSFP）水凝胶，并将其构建为太阳能水蒸发器（SWE）。通过简便的方法结合SA的交联，将单宁酸(TA)和Fe 3+进行原位螯合。与离子交联的 SA-Fe 3+网络一起，具有亲水性水传输网络的多孔水凝胶保持对蒸发界面的连续供水。此外，亲水网络和TA可以有效激活蒸发界面中的水分子，有利于降低水的蒸发焓。0.8 TFSFP水凝胶具有降低的蒸发热函和广泛的光吸收，在1太阳下的蒸发率为1.53 kg·m –1 ·h –1 ，光热转换效率为83.34%。0.8 TFSFP水凝胶SWE具有耐盐性和太阳光强度适应能力，可以在五个周期内持续蒸发，并具有优异的海水淡化能力，在淡水采集方面具有潜在的应用前景。
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