Portable Bulk-Water Disinfection by Live Capture of Bacteria with Divergently Branched Porous Graphite in Electric Fields
Portable Bulk-Water Disinfection by Live Capture of Bacteria with Divergently Branched Porous Graphite in Electric Fields
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DOI：
10.1021/acsnano.2c12229
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发表时间：
2023-05-24
期刊：
影响因子：
17.1
通讯作者：
Fan, Donglei Emma
中科院分区：
文献类型：
--
作者：
Luo, Xianfu;Li, Weigu;Fan, Donglei Emma
容易获得清洁的水是现代社会的功能和发展所必不可少的。然而，开发用于使用点（POU）应用的节能、简易和便携式水处理系统仍然很困难，这对于极端天气和危急情况下的社会安全和恢复力尤为重要。在这里，我们提出并验证了一个有价值的工作计划，通过直接捕获和去除病原体细胞从散装水使用战略设计的三维（3D）多孔树枝状石墨泡沫（PDGF）在高频交流电场中的作用。该原型集成在3D打印的便携式水净化模块中，可以重复去除99.997%的E。大肠杆菌细菌在散装水在几个电压与最低的能量消耗在435.5 J中心点L-1（.）每片售价1.47美元的PDGFs可以稳定运行至少20次，总共超过8小时，而不会出现功能退化。此外，我们成功地解开所涉及的消毒机制与一维布朗动力学模拟。该系统是实际应用，使天然水沃勒溪在UT奥斯汀的安全饮用水的水平。本研究包括基于枝状多孔石墨的工作机理和设计方案，可以启发未来POU水处理装置的范例。
Easy access to clean water is essential to functioningand developmentof modern society. However, it remains arduous to develop energy-efficient,facile, and portable water treatment systems for point-of-use (POU)applications, which is particularly imperative for the safety andresilience of society during extreme weather and critical situations.Here, we propose and validate a meritorious working scheme for waterdisinfection via directly capturing and removing pathogen cells frombulk water using strategically designed three-dimensional (3D) porousdendritic graphite foams (PDGFs) in a high-frequency AC field. Theprototype, integrated in a 3D-printed portable water-purificationmodule, can reproducibly remove 99.997% E. coli bacteria in bulk water at a few voltages with among the lowest energyconsumption at 435.5 J center dot L-1 (.) ThePDGFs, costing $1.47 per piece, can robustly operate at least 20 timesfor more than 8 h in total without functional degradation. Furthermore,we successfully unravel the involved disinfection mechanism with one-dimensionalBrownian dynamics simulation. The system is practically applied thatbrings natural water in Waller Creek at UT Austin to the safe drinkinglevel. This research, including the working mechanism based on dendriticallyporous graphite and the design scheme, could inspire a future deviceparadigm for POU water treatment.