A study on the influence of gas mixtures on the property of plasma-activated water

被引:20
|
作者
Lai, Cheng-Chun [1 ]
Deng, Yong-Xin [1 ]
Liao, Ying-Hao [1 ]
机构
[1] Natl Chiao Tung Univ, Dept Mech Engn, 1001 Univ Rd, Hsinchu 300, Taiwan
关键词
plasma jet; plasma-activated water; reactive nitrogen species; reactive oxygen species; sterilization; ATMOSPHERIC-PRESSURE PLASMA; PLANT-GROWTH; INACTIVATION;
D O I
10.1002/ppap.201900196
中图分类号
O59 [应用物理学];
学科分类号
摘要
The present study applying a plasma jet to activate water in a controllable environment is aimed to investigate the effect of a combination of (working/chamber gas) on the properties of plasma-activated water. After 10 min of activation, results reveal that a significant decrease in solution pH is observed with the presence of N-2. Hydrogen peroxide appears to be the major species for most gas mixtures, except [Ar + air/Ar] and [Ar + air/air], where nitrite and nitrate dominate. A gas mixture of [Ar + air/Ar] produces the maximum concentration of NO2-, while the maximum NO3- and H2O2 are observed for [Ar + air/air] and (Ar/Ar), respectively. Overall, the antibacterial efficacy correlates well with NO2- concentration.
引用
收藏
页数:7
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