Optical and application study of gas-liquid discharge excited by bipolar nanosecond pulse in atmospheric air

被引：9

作者：

Wang, Sen ^{[1
]}

Wang, Wen-chun ^{[1
]}

Yang, De-zheng ^{[1
]}

Liu, Zhi-jie ^{[1
]}

Zhang, Shuai ^{[1
]}

机构：

[1] Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat, Dalian 116024, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 131卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Nanosecond pulse; Gas-liquid diffuse discharge; Room temperature plasma; Water sterilization; DIELECTRIC BARRIER DISCHARGE; PRESSURE; PLASMA; BACTERIA; ELECTRODE; OXYGEN; CORONA;

D O I：

10.1016/j.saa.2014.04.061

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

In this study, a bipolar nanosecond pulse with 20 ns rising time is employed to generate air gas-liquid diffuse discharge plasma with room gas temperature in quartz tube at atmospheric pressure. The image of the discharge and optical emission spectra of active species in the plasma are recorded. The plasma gas temperature is determined to be approximately 390 K by compared the experimental spectra with the simulated spectra, which is slightly higher than the room temperature. The result indicated that the gas temperature rises gradually with pulse peak voltage increasing, while decreases slightly with the electrode gap distance increasing. As an important application, bipolar nanosecond pulse discharge is used to sterilize the common microorganisms (Actinomycetes, Candida albicans and Escherichia coli) existing in drinking water, which performs high sterilization efficiency. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：571 / 576

页数：6

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