Research Article
Considerable Variation of Antibacterial Activity of Cu Nanoparticles Suspensions Depending on the Storage Time, Dispersive Medium, and Particle Sizes
Table 4
pH levels of Cu2+ solutions.
| | Concentrations (mg/L) | Cu2+ + H2O (0.5 h) | Cu2+ + H2O (24 h) | Cu2+ + PS (0.5 h) | Cu2+ + PS (24 h) |
| | 0.0001 | 7.2 | 7.2 | 7.1 | 7.2 | | 0.001 | 7.2 | 7.3 | 7.2 | 7.2 | | 0.01 | 7.2 | 7.3 | 7.1 | 7.3 | | 0.1 | 7.2 | 7.2 | 7.1 | 7.2 | | 1 | 7.1 | 7.1 | 7.0 | 7.1 | | 10 | 6.7 | 7.1 | 6.6 | 6.3 |
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