Bacterial Disinfection by CuFe2O4 Nanoparticles Enhanced by NH2OH: A Mechanistic Study
| Autor: | Zhou Xiaoyu, Zhi Li, Jin Li, Luo Liumin, Fu-ren Xiao, Xiaodong Zhou, Gu Yu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
General Chemical Engineering
Nanoparticle chemistry.chemical_element 02 engineering and technology 010501 environmental sciences hydroxylamine medicine.disease_cause 01 natural sciences Article chemistry.chemical_compound Hydroxylamine Ferrite (iron) medicine General Materials Science Water disinfection 0105 earth and related environmental sciences chemistry.chemical_classification reactive oxygen species Reactive oxygen species Chemistry copper ferrite 021001 nanoscience & nanotechnology Copper Combinatorial chemistry water pathogen Water treatment Cu(I) 0210 nano-technology Oxidative stress |
| Zdroj: | Nanomaterials Volume 10 Issue 1 |
| ISSN: | 2079-4991 |
| DOI: | 10.3390/nano10010018 |
| Popis: | Many disinfection technologies have emerged recently in water treatment industry, which are designed to inactivate water pathogens with extraordinary efficiency and minimum side effects and costs. Current disinfection processes, including chlorination, ozonation, UV irradiation, and so on, have their inherent drawbacks, and have been proven ineffective under certain scenarios. Bacterial inactivation by noble metals has been traditionally used, and copper is an ideal candidate as a bactericidal agent owing to its high abundance and low cost. Building on previous findings, we explored the bactericidal efficiency of Cu(I) and attempted to develop it into a novel water disinfection platform. Nanosized copper ferrite was synthesized, and it was reduced by hydroxylamine to form surface bound Cu(I) species. Our results showed that the generated Cu(I) on copper ferrite surface could inactivate E. coli at a much higher efficiency than Cu(II) species. Elevated reactive oxygen species&rsquo content inside the cell primarily accounted for the strong bactericidal role of Cu(I), which may eventually lead to enhanced oxidative stress towards cell membrane, DNA, and functional proteins. The developed platform in this study is promising to be integrated into current water treatment industry. |
| Databáze: | OpenAIRE |
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