In this work, we have studied the influences of electrode geometrical shapes on the optical properties of two non-thermal atmospheric pressure plasma jets, NTAPPjs. A capillary wired-electrode and a traditional ring-electrode NTAPPjs are used in this investigation. Both are driven by a high voltage pulsed power source in the kilovolt range and frequency of several kilohertz. An intensified charged coupled device, ICCD camera on nanosecond timescale is employed to study dynamic behaviour and formation of the plasma discharge. The method provided useful information about the spatial–temporal behaviour of the plasma pulses and the discharge between electrodes. Both plasma discharges are tested to confirm the role of low temperature plasma in the NO_x and hydrocarbon oxidation which results from the main combustion of diesel fuel over Ag/Al₂O₃ catalyst. A plasma-catalyst reactor is designed and checked in environmental applications. A significant enhancement in the activity of the plasma catalyst reactors is observed through the strong conversion of both NO_x and hydrocarbon at low activation temperature compared with the conventional thermal activation. The results can give a motivation for the development of plasma-catalyst reactors and the activity of conversions, which is still an urgent requirement in creating a clean environment.

在这项工作中，我们研究了电极几何形状对两种非热大气压等离子体射流 NTAPPjs 光学特性的影响。本研究使用毛细管有线电极和传统环形电极 NTAPPjs。两者均由千伏范围和数千赫频率的高压脉冲电源驱动。采用增强的电荷耦合器件，纳秒时间尺度的 ICCD 相机来研究等离子体放电的动态行为和形成。该方法提供了有关等离子体脉冲的时空行为和电极间放电的有用信息。两种等离子体放电都经过测试，以确认低温等离子体在 NO _{x中的作用和由柴油燃料在 Ag/Al 2} O ₃催化剂上的主要燃烧引起的烃氧化。在环境应用中设计和检查了等离子体催化剂反应器。与传统的热活化相比，通过在低活化温度下NO _x和碳氢化合物的强烈转化，观察到等离子体催化剂反应器的活性显着增强。研究结果可以为等离子体催化剂反应器的发展和转化活动提供动力，这仍然是创造清洁环境的迫切要求。