文献类型：期刊文献

英文题名：Unexpectedly high antibacterial ability of water in copper pot with tiny amount of plant leaves

作者：Zhang, Min[1,2];Fang, Zhening[3];Wang, Jun[1,2];Ding, Rui[1,2];Fang, Haiping[1,2];Chen, Ruoyang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]Univ Chinese Acad Sci, Wenzhou Inst, Wenzhou 325000, Zhejiang, Peoples R China;[3]ShanghaiTech Univ, Ctr Transformat Sci, Shanghai 201210, Peoples R China

年份：2024

卷号：24

外文期刊名：WATER RESEARCH X

收录：;EI(收录号：20243016736499);WOS:【SCI-EXPANDED(收录号:WOS:001275522100001)】；

基金：We thank Prof. Yunlong Zhou for constructive suggestions. We acknowledge support from the Shanghai Pujiang Program (No. 23PJ1401800) , the National Natural Science Foundation of China (No. 11974366 and No. 12205101) and the Shanghai Science and Technol-ogy Plan Project of China (No. 23JC1401400) .

语种：英文

外文关键词：Copper pot; Plant leaves; High antibacterial ability; Monovalent copper ions

摘要：Water disinfection by copper vessels has been prevalent over thousands of years. Unfortunately, people are still suffering from the bacterial pollution in drinking water. Here we show that, only through steeping with tiny amounts of common plant leaves, the room-temperature water in copper pots has unexpectedly high antibacterial ability. Remarkably, copper ions released from copper pots into water are in concentrations lower than the WHO safety threshold for drinking water, and have effective antibacterial ability when water contains specific leave components (polyphenols and/or lignin). Our computations show that the key to enhance antibacterial ability is the great increase in the proportion of Cu+ + induced by aromatic rings in these leave components, which has been demonstrated by our experiments. The findings may disclose the mystery of copper vessels for water disinfection, and more importantly, provide effective antibacterial applications in industries and daily lives, by safely using copper ions together with biocompatible natural substances.