Inactivation of pathogenic Klebsiella pneumoniae by CuO/TiO2 nanofibers: A multifunctional nanomaterial via one-step electrospinning |
| |
| Authors: | Ayman Yousef Nasser AM Barakat Touseef Amna Salem S Al-Deyab M Shamshi Hassan Abdallah Abdel-hay Hak Yong Kim |
| |
| Affiliation: | 1. Bionano System Engineering Department, Chonbuk National University, Jeonju 561-756, South Korea;2. Organic Materials and Fiber Engineering Department, Chonbuk National University, Jeonju 561-756, South Korea;3. Chemical Engineering Department, Faculty of Engineering, Minia University, El-Minia, Egypt;4. Centre for Healthcare Technology Development, Chonbuk National University, Jeonju 561-756, South Korea;5. Petrochemical Research Chair, Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia |
| |
| Abstract: | The fabrication and characterization of one-dimensional CuO/TiO2 nanofibers with high photocatalytic and antibacterial activities are presented. The CuO/TiO2 nanofibers were prepared by electrospinning of colloid composed of titanium isopropoxide, poly(vinylpyrroliodine) (PVP) and copper nanoparticles and calcination at 700 °C in air for 1 h. The antibacterial activity was tested using Klebsiella pneumoniae as model organism by calculation of the minimum inhibitory concentration (MIC). The obtained CuO/TiO2 nanofibers showed prominent photocatalytic activity under visible light to degrade reactive black5 and reactive orange16 dyes in aqueous solutions and effectively catalyze K. pneumoniae inactivation. The decomposition process of the cell wall and cell membrane was directly observed by TEM analysis after the exposure of the K. pneumoniae to the nanofibers. Interestingly, the introduced photocatalyst can be reused with the same photocatalytic activity. Overall, the combination of CuO and TiO2 can be synergistic and resulted in CuO/TiO2 composite nanofibers having superior photocatalytic and antimicrobial potential to impede K. pneumoniae growth which causes bacterium to die ultimately. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
