A bioinspired antibacterial and photothermal membrane for stable and durable clean water remediation
A bioinspired antibacterial and photothermal membrane for stable and durable clean water remediation
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DOI：
10.1039/d2mh01151d
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发表时间：
2022-11-08
影响因子：
13.3
通讯作者：
Li, Yiwen
中科院分区：
文献类型：
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作者：
Yang, Yiyan;Yang, Lei;Li, Yiwen
太阳能驱动的蒸汽发电被认为是获取清洁淡水的普遍且可持续的方法。然而，海水中微生物的存在可能会导致高分子光热材料的生物污染和降解，堵塞水分输送通道，导致长期使用过程中太阳能蒸发效率下降。在此，我们报道了一种简单的策略来构建由妥布霉素掺杂的聚多巴胺纳米颗粒（PDA/TOB@CA）涂覆的坚固的纤维素膜装置。 PDA/TOB@CA膜不仅表现出协同抗菌行为和长期持续的抗生素释放特性，而且还实现了1.61 kg m(-2) h(-1)的高水蒸发率以及>90%的蒸发效率。更重要的是，高抗菌活性赋予PDA/TOB@CA膜卓越的耐用性，即使在微生物丰富的环境中也能稳定重复使用超过20个周期。因此，我们预计这项研究可以为设计和制造强大的抗菌和光热材料铺平一条新的途径，以实现长期稳定的清洁水生产。
Solar-driven steam generation has been considered as a prevalent and sustainable approach to obtain clean fresh water. However, the presence of microorganisms in seawater may cause the biofouling and degradation of polymeric photothermal materials and clog the channels for water transportation, leading to a decrease in solar evaporation efficiency during long-term usage. Herein, we have reported a facile strategy to construct a robust cellulose membrane device coated by tobramycin-doped polydopamine nanoparticles (PDA/TOB@CA). The PDA/TOB@CA membrane not only exhibited synergistic antibacterial behaviors with long-term and sustained antibiotic release profiles, but also achieved a high water evaporation rate of 1.61 kg m(-2) h(-1) as well as an evaporation efficiency of >90%. More importantly, the high antibacterial activity endowed the PDA/TOB@CA membrane with superb durability for stable reuse over 20 cycles, even in microbe-rich environments. Therefore, we envision that this study could pave a new pathway towards the design and fabrication of robust antibacterial and photothermal materials for long-term and stable clean water production.