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Black Phosphorous Nanosheets: A Novel Solar Vapor Generator
Solar RRL ( IF 6.0 ) Pub Date : 2020-01-24 , DOI: 10.1002/solr.201900537 Wei Cai 1 , Xiaowei Mu 1 , Ying Pan 2 , Zhaoxin Li 1 , Junling Wang 1 , Xia Zhou 1 , Wenwen Guo 1 , Weizhao Hu 1 , Lei Song 1 , Yuan Hu 1
Solar RRL ( IF 6.0 ) Pub Date : 2020-01-24 , DOI: 10.1002/solr.201900537 Wei Cai 1 , Xiaowei Mu 1 , Ying Pan 2 , Zhaoxin Li 1 , Junling Wang 1 , Xia Zhou 1 , Wenwen Guo 1 , Weizhao Hu 1 , Lei Song 1 , Yuan Hu 1
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Solar vapor generation is a promising and whole new branch of photothermal conversion for harvesting solar energy. In this work, a novel solar vapor generator based on black phosphorous (BP) nanosheets is designed for steam generation, desalination, as well as dye removal, using polyurethane (PU) foam as a supporting material. Employing electrostatic layer‐by‐layer assembly, BP nanosheets and chitosan (CS) are alternately deposited onto the skeleton of the PU foam. After the deposition of BP nanosheets, the hydrophilicity of the PU composite foam is obviously improved, thus facilitating the capillary effect. Even with a spot of BP nanosheets (lower than 5.0 wt%), the as‐fabricated PU@(sodium alginate, SA/BP)6 foam exhibits a surface temperature of ≈70.9 °C and an evaporation rate of 1.082 kg m−2 h−1 under 1 sun irradiation. Due to the protection effect of CS, the photothermal conversion performance and water evaporation rate do not deteriorate during ten cycles of reusing. In addition, the water evaporation performance of PU@(SA/BP)6 is also investigated under different conditions, including sun irradiation intensity, metal ions, and dye. In brief, employing a facile and eco‐friendly fabrication process, BP nanosheets are first applied to seawater desalination and pollution removal, presenting a tremendous potential for practical solar vapor generation.
中文翻译：
黑色磷纳米片：新型太阳能蒸气发生器
产生太阳蒸气是光热转化的一个有前途的全新的分支，用于收获太阳能。在这项工作中，基于聚氨酯（PU）泡沫作为支撑材料，设计了一种基于黑磷（BP）纳米片的新型太阳能蒸汽发生器，用于蒸汽产生，脱盐以及染料去除。采用静电逐层组装，将BP纳米片和壳聚糖（CS）交替沉积在PU泡沫的骨架上。沉积BP纳米片后，PU复合泡沫的亲水性得到明显改善，从而促进了毛细作用。即使有斑点的BP纳米片（低于5.0 wt％），预制的PU @（海藻酸钠，SA / BP）6泡沫也表现出约70.9°C的表面温度和1.082 kg m -2 的蒸发速率在1个阳光照射下h -1。由于CS的保护作用，在重复使用十个循环期间，光热转换性能和水蒸发速率不会降低。此外，还研究了PU @（SA / BP）6在不同条件下的水蒸发性能，包括太阳辐射强度，金属离子和染料。简而言之，BP纳米片材采用便捷且环保的制造工艺，首先应用于海水淡化和去除污染，为实际的太阳蒸气产生提供了巨大的潜力。
更新日期：2020-01-24
中文翻译：
黑色磷纳米片：新型太阳能蒸气发生器
产生太阳蒸气是光热转化的一个有前途的全新的分支，用于收获太阳能。在这项工作中，基于聚氨酯（PU）泡沫作为支撑材料，设计了一种基于黑磷（BP）纳米片的新型太阳能蒸汽发生器，用于蒸汽产生，脱盐以及染料去除。采用静电逐层组装，将BP纳米片和壳聚糖（CS）交替沉积在PU泡沫的骨架上。沉积BP纳米片后，PU复合泡沫的亲水性得到明显改善，从而促进了毛细作用。即使有斑点的BP纳米片（低于5.0 wt％），预制的PU @（海藻酸钠，SA / BP）6泡沫也表现出约70.9°C的表面温度和1.082 kg m -2 的蒸发速率在1个阳光照射下h -1。由于CS的保护作用，在重复使用十个循环期间，光热转换性能和水蒸发速率不会降低。此外，还研究了PU @（SA / BP）6在不同条件下的水蒸发性能，包括太阳辐射强度，金属离子和染料。简而言之，BP纳米片材采用便捷且环保的制造工艺，首先应用于海水淡化和去除污染，为实际的太阳蒸气产生提供了巨大的潜力。
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