高等学校化学学报2023，Vol.44Issue(12)：52-60,9.DOI:10.7503/cjcu20230327
磁场辅助沿面介质阻挡放电对所制备等离子体活化水化学活性及灭菌效应的影响
Influence of Magnetic Field Assisted Surface Dielectric Barrier Discharge on the Chemical Activity and Sterilization Effect of Plasma Activated Water
摘要
Abstract
A magnetic field assisted atmospheric pressure air surface dielectric barrier discharge was developed to prepare plasma activated water,and the solution properties of plasma activated water prepared by discharge with and without magnetic field under different discharge voltages and frequencies were studied.Combined with gas-liquid two-phase related chemical reaction networks,the mechanism of the influence of magnetic field on the preparation of plasma activated water by discharge was analyzed.And then the sterilization effect of plasma activated water prepared with and without magnetic field on E.coli was compared under different discharge conditions.The results indicate that the addition of a magnetic field can affect electron collision reactions,and further affect subsequent processes of chain chemical reactions and liquid phase secondary reactions,so as to improve the acidity,conductivity,and the concentrations of NO-3,NO-2,H2O2,and ONOOH of plasma activated water,consequently enhancing the sterilization effect on E.coli.For achieving a same sterilization effect,the introduction of a magnetic field significantly reduces the required discharge voltage and frequency,reducing energy consumption.In addition,the reactive species of H+,H2O2,and ONOOH in the plasma activated water have a synergistic effect on sterilization.The enhancement of various reactive species in the liquid phase is most significant as the magnetic field assists a high voltage and high frequency discharge,and the improvement of sterilization effect is also most obvious at this time.关键词
磁场/沿面介质阻挡放电/等离子体活化水/活性物种/灭菌效应Key words
Magnetic field/Surface dielectric barrier discharge/Plasma activated water/Reactive species/Sterilization effect分类
化学化工引用本文复制引用
刘坤,杨明昊,周雄峰,白杨,冉从福..磁场辅助沿面介质阻挡放电对所制备等离子体活化水化学活性及灭菌效应的影响[J].高等学校化学学报,2023,44(12):52-60,9.基金项目
国家自然科学基金(批准号:52307160)资助.Supported by the National Natural Science Foundation of China(No.52307160). （批准号:52307160）
