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Gel-Emulsion-Templated Polymeric Aerogels for Water Treatment by Organic Liquid Removal and Solar Vapor Generation.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-01-21 , DOI: 10.1002/cssc.201902970
Jianfei Liu 1 , Hui Yang 1 , Kaiqiang Liu 1 , Rong Miao 1 , Yu Fang 1
Affiliation  

The importance of water cannot be overstated. It is the most important natural resource for our survival and development. The development of suitable materials for efficient water purification will provide a critical contribution for sustainable water use. In this context, a gel-emulsion-templated synthesis of a polymeric aerogel has been developed for water treatment. Owing to its hydrophobic nature, the aerogel shows high sorption (nearly 20 times its weight) for organic liquids, such as toluene, phenol, and nitrobenzene, and can be used to remove them from water. The aerogel shows low thermal conductivity (0.032 W m-1  K-1 ) and excellent light absorption efficiency (>92 %) after carbonization, which provides the possibility for the construction of an interfacial solar vapor generation system. The as-prepared materials are used to develop a two-step approach to remove both organic and inorganic contaminants (salts) from water. Importantly, the aerogel shows excellent reusability and high efficiency both for oil sorption and for solar vapor generation. Moreover, the low cost and easy scale-up of the preparation process lay a solid foundation for practical application. It is anticipated that the prepared aerogels would contribute not only to water purification but also to other related areas.

中文翻译:

凝胶乳液模板化聚合物气凝胶,用于通过去除有机液体和产生太阳蒸气的方式进行水处理。

水的重要性不可夸大。它是我们赖以生存和发展的最重要的自然资源。开发适用于有效水净化的材料将为可持续用水提供重要的贡献。在这种情况下,已经开发了用于水处理的聚合物气凝胶的以凝胶乳液为模板的合成方法。由于其疏水性,气凝胶对有机液体(例如甲苯,苯酚和硝基苯)表现出很高的吸附力(几乎是其重量的20倍),可用于将其从水中去除。碳化后,气凝胶显示出低的热导率(0.032 W m-1 K-1)和出色的光吸收效率(> 92%),这为构建界面太阳蒸气产生系统提供了可能性。所制备的材料用于开发两步法,以从水中去除有机和无机污染物(盐)。重要的是,气凝胶对于吸油和产生太阳蒸气均显示出极好的可重复使用性和高效率。而且,制备过程的低成本和容易扩大规模为实际应用奠定了坚实的基础。预期制备的气凝胶不仅将有助于水的净化,而且还将有助于其他相关领域。
更新日期:2020-01-23
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