Branched CuO-Co3O4 nanowires coated with carbon on Cu foam for water sterilization. Issue 4 (August 2021)

• Record Type: Journal Article
• Authors: Wang, Haoyu; Yu, Meiyan; Cui, Shaogang; Dong, Liting; Wang, Shuting; Wei, Shuang; Feng, Huimeng; Chen, Shougang
• Is Part Of: Journal of environmental chemical engineering. Volume 9:Issue 4(2021)
• Publication Date: 2021-08
• Subjects: Branched CuO-Co3O4 nanowires -- Carbon film -- Electroporation -- Reactive oxygen species -- Stability -- Water disinfection; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2021.105629
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: With the rapid development of economy, water pollution becomes a serious threat to people's lives and health. It is urgent to exploit a method to achieve rapid and long-term stability water disinfection. Herein, the branched CuO-Co3 O4 nanowires (NWs) were first prepared on the foamed copper substrate, afterwards coated a layer of carbon film on NWs to obtain the innovative CuO-Co3 O4 @C NWs filter, which remarkably elevated the sterilization property and superior long-term stability. As a result, the resulting CuO-Co3 O4 @C NWs filter, based on electroporation and reactive oxygen species (ROS) sterilization technology, had an extremely sterilization efficiency of 99.5% for Escherichia coli and Staphylococcus aureus at a flow rate of 1000 mL min -1 and an external voltage of 10 V. More importantly, the filter had excellent bactericidal stability. After 12 h of continuous operation, the efficiency remained above 80%, which was not possible with the previously reported electroporation technology. This rapid and long-time stability water disinfection material has great potential in practical applications in the future. Graphical Abstract: The filter of 3D CuO-Co3 O4 @C NWs electrode with composite structure has been successfully prepared and innovatively used for water disinfection, which achieves excellent sterilization efficiency with high flow rate and ensures the stability of the electrode. ga1 Highlights: Innovatively prepared 3D NWs electrode. The 3D CuO-Co3 O4 @C NWs electrode significantly increases the position of the enhanced electric field. The 3D CuO-Co3 O4 @C NWs electrode has unprecedented long-term sterilization performance at high flow rates.