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Photothermal Membrane of CuS/Polyacrylamide–Carboxymethyl Cellulose for Solar Evaporation
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2021-04-07 , DOI: 10.1021/acsapm.0c01422 Jun Chen 1 , Dawei Wang 1 , Xin Li 1 , Hao Sun 1 , Hanxiao Zhao 1 , Ying Li 1 , Xuefeng Liu 1 , Gang Shi 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2021-04-07 , DOI: 10.1021/acsapm.0c01422 Jun Chen 1 , Dawei Wang 1 , Xin Li 1 , Hao Sun 1 , Hanxiao Zhao 1 , Ying Li 1 , Xuefeng Liu 1 , Gang Shi 1
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Solar water evaporation is an environment-friendly and clean way of wastewater treatment and seawater desalination. However, a solar evaporator based on a hydrogel substrate still needs excellent toughness to ensure continuous and stable utilization while achieving a fast evaporation rate. In this research, a solar evaporator based on a dual network hydrogel was fabricated by double chemical cross-linking, consisting of polyacrylamide (PAAm), carboxymethyl cellulose (CMC), and CuS. By utilizing N,N′-methylenebisacrylamide (MBA) and Fe3+ for a double chemical cross-linking agent, PAAm and CMC (PAAm–CMC) formed an interpenetrating dual network structure, which is helpful to improve the mechanical properties of a photothermal membrane. The breaking elongation of a CuS/PAAm–CMC membrane is 480%. Meanwhile, the hydrophilic network ensured the high efficiency of water transmission and water activation. The evaporation rate reached 1.613 kg m–2 h–1 at 1 sun, and the photothermal conversion efficiency reached 79%. In the process of a simulated desalination experiment (10 wt % NaCl solution), the evaporation rate did not decrease after 10 cycles, indicating the self-cleaning ability and good durability of CuS/PAAm–CMC.
中文翻译：
CuS /聚丙烯酰胺-羧甲基纤维素的光热膜用于太阳蒸发
太阳能蒸发是一种废水处理和海水淡化的环保清洁方法。然而，基于水凝胶基材的太阳能蒸发器仍需要优异的韧性以确保连续且稳定的利用，同时实现快速的蒸发速率。在这项研究中，通过双化学交联制造了基于双网络水凝胶的太阳能蒸发器，它由聚丙烯酰胺（PAAm），羧甲基纤维素（CMC）和CuS组成。通过利用N，N'-亚甲基双丙烯酰胺（MBA）和Fe 3+对于双化学交联剂，PAAm和CMC（PAAm–CMC）形成了互穿的双网状结构，这有助于改善光热膜的机械性能。CuS / PAAm–CMC膜的断裂伸长率为480％。同时，亲水网络确保了高效率的水传输和水活化。在1个太阳下，蒸发速率达到1.613 kg m –2 h –1，光热转化效率达到79％。在模拟脱盐实验（10 wt％NaCl溶液）的过程中，经过10个循环后蒸发速率并未降低，表明CuS / PAAm–CMC具有自清洁能力和良好的耐久性。
更新日期：2021-05-14
中文翻译：
CuS /聚丙烯酰胺-羧甲基纤维素的光热膜用于太阳蒸发
太阳能蒸发是一种废水处理和海水淡化的环保清洁方法。然而，基于水凝胶基材的太阳能蒸发器仍需要优异的韧性以确保连续且稳定的利用，同时实现快速的蒸发速率。在这项研究中，通过双化学交联制造了基于双网络水凝胶的太阳能蒸发器，它由聚丙烯酰胺（PAAm），羧甲基纤维素（CMC）和CuS组成。通过利用N，N'-亚甲基双丙烯酰胺（MBA）和Fe 3+对于双化学交联剂，PAAm和CMC（PAAm–CMC）形成了互穿的双网状结构，这有助于改善光热膜的机械性能。CuS / PAAm–CMC膜的断裂伸长率为480％。同时，亲水网络确保了高效率的水传输和水活化。在1个太阳下，蒸发速率达到1.613 kg m –2 h –1，光热转化效率达到79％。在模拟脱盐实验（10 wt％NaCl溶液）的过程中，经过10个循环后蒸发速率并未降低，表明CuS / PAAm–CMC具有自清洁能力和良好的耐久性。
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