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Ultrastable Co-NC membrane for sterilization of *Escherichia coli* in flowing water

Engineering and Technology

Ultrastable Co-NC membrane for sterilization of *Escherichia coli* in flowing water

C. Li, J. Li, et al.

Discover the revolutionary Co-NC membrane designed for water sterilization. This advanced technology, developed by Chao Li and colleagues, achieves an astonishing 99.9999% efficacy against *E. coli*. With remarkable stability even after 40 use cycles, it promises to transform water purification processes, ensuring clean water is within reach.

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Playback language: English
Abstract
This paper introduces a robust Co-NC membrane for water sterilization using peroxonosulfate (PMS) based advanced oxidation technology. The membrane, composed of cobalt nanoparticles embedded in nitrogen-doped carbon nanotubes, addresses Co-ion leaching and recovery challenges associated with cobalt-based catalysts. The Co-NC membrane demonstrated 99.9999% *E. coli* sterilization efficiency and retained 96.29% stability after 40 cycles. Its effectiveness extended to Qiuxi River water, maintaining performance over 12 hours of continuous treatment. Mechanistic studies suggest high-valence metals (Co=O) disrupt cell membranes.
Publisher
npj Clean Water
Published On
Jun 22, 2023
Authors
Chao Li, Jiale Li, Niu Huang, Xin Ying Kong, Qingyi Xiao, Yingping Huang, Po Keung Wong, Liqun Ye
Tags
Co-NC membrane
water sterilization
peroxonosulfate
cobalt nanoparticles
E. coli
stability
oxidation technology

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