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A Low-Cost Biomimetic Heterostructured Multilayer Membrane with Geopolymer Microparticles for Broad-Spectrum Water Purification.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-02-18 , DOI: 10.1021/acsami.0c00440 Ying Song 1 , Zhili Li 1 , Jiubing Zhang 1 , Ying Tang 1 , Yuanyuan Ge 1 , Xuemin Cui 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-02-18 , DOI: 10.1021/acsami.0c00440 Ying Song 1 , Zhili Li 1 , Jiubing Zhang 1 , Ying Tang 1 , Yuanyuan Ge 1 , Xuemin Cui 1
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Membranes have received wide interest in water purification. However, the development of a low-cost and eco-friendly membrane with the desired structure for broad-spectrum water purification still remains a great challenge. Inspired by the hierarchical structure and functions of wood, a heterostructured multilayer membrane fabricated through a facile and "green" layer-by-layer self-assembly method was reported in this study. Specifically, the hydrophilic geopolymer microparticles were doped into sodium alginate matrix to construct "xylem" layers with numerous microchannels, and chitosan was used to build "phloem" layers with dense structures. The resultant biomimetic multilayer membrane displayed a distinct heterostructure and provided the desired rejection to different kinds of pollutants including nanoparticles, soluble dyes, and heavy metal ions, as well as emulsified oil droplets. Furthermore, the biomimetic membrane exhibited a superior stability in a long-term operation and an excellent recyclability for multiple usages for oil droplets removal. The proposed biomimetic membrane prepared in a completely "green" way possesses great potential in practical application for water purification and separation.
中文翻译：
一种低成本的仿生杂化异质结构多层膜，具有地聚合物微粒，可用于广谱水净化。
膜在水净化方面已引起广泛关注。然而，开发具有广谱水净化所需结构的低成本且生态友好的膜仍然是巨大的挑战。受到木材的层次结构和功能的启发，本研究报道了一种通过简便且“绿色”的逐层自组装方法制造的异质多层膜。具体而言，将亲水性地质聚合物微粒掺入海藻酸钠基质中，以构建具有众多微通道的“木质部”层，并使用壳聚糖构建具有致密结构的“韧皮部”层。所得的仿生多层膜显示出独特的异质结构，并提供了对各种污染物（包括纳米颗粒）的所需排斥力，可溶性染料，重金属离子以及乳化的油滴。此外，仿生膜在长期操作中显示出优异的稳定性，并且对于多次使用以去除油滴具有优异的可回收性。拟议的以完全“绿色”方式制备的仿生膜在水净化和分离的实际应用中具有巨大潜力。
更新日期：2020-02-26
中文翻译：
一种低成本的仿生杂化异质结构多层膜，具有地聚合物微粒，可用于广谱水净化。
膜在水净化方面已引起广泛关注。然而，开发具有广谱水净化所需结构的低成本且生态友好的膜仍然是巨大的挑战。受到木材的层次结构和功能的启发，本研究报道了一种通过简便且“绿色”的逐层自组装方法制造的异质多层膜。具体而言，将亲水性地质聚合物微粒掺入海藻酸钠基质中，以构建具有众多微通道的“木质部”层，并使用壳聚糖构建具有致密结构的“韧皮部”层。所得的仿生多层膜显示出独特的异质结构，并提供了对各种污染物（包括纳米颗粒）的所需排斥力，可溶性染料，重金属离子以及乳化的油滴。此外，仿生膜在长期操作中显示出优异的稳定性，并且对于多次使用以去除油滴具有优异的可回收性。拟议的以完全“绿色”方式制备的仿生膜在水净化和分离的实际应用中具有巨大潜力。
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