Decoupling analysis of the production mechanism of aqueous reactive species induced by a helium plasma jet

被引：47

作者：

Chen, Zeyu ^{[1
]}

Liu, Dingxin ^{[1
]}

Xu, Han ^{[1
]}

Xia, Wenjie ^{[1
]}

Liu, Zhijie ^{[1
]}

Xu, Dehui ^{[1
]}

Rong, Mingzhe ^{[1
]}

Kong, Michael G. ^{[1
,2
,3
]}

机构：

[1] Xi An Jiao Tong Univ, Ctr Plasma Biomed, State Key Lab Elect Insulationand Power Equipment, Xian 710049, Shaanxi, Peoples R China

[2] Old Dominion Univ, Frank Reidy Ctr Bioelect, Norfolk, VA 23508 USA

[3] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA

来源：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2019年 / 28卷 / 02期

基金：

中国国家自然科学基金;

关键词：

aqueous reactive species; plasma jet; production mechanism; ATMOSPHERIC-PRESSURE; INTERFACIAL REACTIONS; LOW-TEMPERATURE; WATER; DISCHARGE; PEROXYNITRITE; ELECTROLYSIS; REDUCTION; CHEMISTRY; REMOVAL;

D O I：

10.1088/1361-6595/ab006b

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Aqueous reactive species induced by gas plasmas play a dominant role in many plasma applications such as water purification and biomedicine, but their production mechanism is so far not well understood. In this paper, an experimental setup is designed to study the interaction between an AC helium plasma jet and PBS, which allows a decoupling analysis of the plasma-liquid processes on the production of aqueous reactive species. The processes include the dissolution of neutral reactive species, the electron absorption by dissolved oxygen, the deposition of positive ions, etc. Four aqueous reactive species including H2O2, O-2(-), OH and peroxynitrite (ONOOH/ONOO-) are detected, among which the peroxynitrite should originate from the air impurity in helium. It is found that the aqueous H2O2 and peroxynitrite are mainly dissolved from the gas phase, the aqueous O-2(-) is mainly generated by the electron absorption by dissolved oxygen, and the aqueous OH is mainly generated by the deposition of positive ions.

引用

页数：8

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