...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plasma Sources Science & Technology >The consequences of air flow on the distribution of aqueous species during dielectric barrier discharge treatment of thin water layers
【24h】

The consequences of air flow on the distribution of aqueous species during dielectric barrier discharge treatment of thin water layers

机译：气流对薄水层介电阻挡放电处理期间含水物质分布的后果

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The desired outcomes of wet tissue treatment by dielectric barrier discharges (DBDs) strongly depend on the integrated fluences of reactive species incident onto the tissue, which are determined by power, frequency and treatment time. The reactivity produced by such plasmas is often expected to be proportional to treatment time due to the accumulation of radicals in the liquid over the tissue. However, one of the typically uncontrolled parameters in DBD treatment of liquids and tissue is gas flow, which could affect the delivery of plasma produced radicals to the tissue. Gas flow can redistribute long-lived, plasma produced gas phase species prior to solvating in the liquid, while not greatly affecting the solvation of short-lived species. Gas flow can therefore potentially be a control mechanism for tailoring the fluences of reactive species to the tissue. In this paper, we report on a computational investigation of the consequences of gas flow on treatment of liquid layers covering tissue by atmospheric DBDs by up to 100 pulses. We found that gas flow (through residence time of the gas) can control the production of gas phase species requiring many collisions to form, such as reactive nitrogen species (RNS). The resulting solvation of the RNS in turn controls the production of aqueous species such as NO3aq- and ONOOaq- (aq denotes an aqueous species). With the exception of O-3 and O-3aq, reactive oxygen species (ROS) are less sensitive to gas flow, and so OHaq and H2O2aq, are determined primarily by discharge properties.
机译：通过介质阻挡放电（DBD）处理湿组织的预期结果在很大程度上取决于入射到组织上的活性物质的综合通量，其由功率、频率和处理时间决定。这种等离子体产生的反应性通常与治疗时间成正比，因为自由基在组织上方的液体中积累。然而，在液体和组织的DBD治疗中，一个典型的不可控参数是气体流量，这可能会影响血浆产生的自由基向组织的输送。在液体中溶解之前，气流可以重新分配长寿命、等离子体产生的气相物种，而对短命物种的溶剂化影响不大。因此，气流可能是一种控制机制，用于调整反应性物质对组织的影响。在这篇论文中，我们报告了一项关于气体流动对大气DBD处理覆盖组织的液体层的影响的计算研究，其脉冲数高达100个。我们发现，气流（通过气体的停留时间）可以控制需要多次碰撞才能形成的气相物种的产生，例如活性氮物种（RNS）。由此产生的RNS溶剂化反过来控制水性物种的产生，例如NO3aq-和ONOOaq-（aq表示水性物种）。除O-3和O-3aq外，活性氧物种（ROS）对气流不太敏感，因此OHaq和H2O2aq主要由放电特性决定。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号