Abstract
Ethanol is a kind of commonly used disinfectant in medical treatment. Theoretically, doping ethanol into aqueous solution treated by Ar plasma jet can enhance the bactericidal effect. Through the inactivation experiment of Methicillin-resistant Staphylococcus aureus, it was found that the bactericidal effect of Ar jet plasma-activated water was increased by more than 5 orders of magnitude by doping 20% ethanol. Furthermore, when 0.2% N2 was mixed into the working gas or 1% O2 was added into the shield, the bactericidal effect can be improved by more than 5 orders of magnitude by doping 2% ethanol. At the same time, 2% ethanol doping can cause the overlapping of multiple discharge channels in the plasma, which may be due to Penning ionization of metastable Ar* and ethanol gas molecules at the gas-liquid interface. Finally, the analysis of reactive species in liquid phase show that peracetic acid in ethanol solution activated by plasma may play a leading role in the sterilization process, and peroxynitrite and peracetic acid may synergistically enhance the bactericidal effect.
| Translated title of the contribution | Discharge Characteristics and Bactericidal Effect of Ar Plasma Jet Treating Ethanol Aqueous Solution |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 765-776 |
| Number of pages | 12 |
| Journal | Diangong Jishu Xuebao/Transactions of China Electrotechnical Society |
| Volume | 36 |
| Issue number | 4 |
| DOIs | |
| State | Published - 25 Feb 2021 |