Study on hydrogen peroxide generation by water surface discharge
Study on hydrogen peroxide generation by water surface discharge
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DOI：
10.1109/tps.2014.2345074
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发表时间：
2014-08
期刊：
影响因子：
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通讯作者：
K. Yoshihara;Ruma;N. Aoki;S. H. R. Hosseini;T. Sakugawa;H. Akiyama;P. Lukeš
中科院分区：
文献类型：
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作者：
K. Yoshihara;Ruma;N. Aoki;S. H. R. Hosseini;T. Sakugawa;H. Akiyama;P. Lukeš
以过氧化氢为化学探针，研究了水下放电等离子体和空气放电等离子体沿水面传播时的化学活性。采用点-面电极结构和磁脉冲压缩（MPC）脉冲功率调制器产生的正极性脉冲高压。研究了脉冲重复频率（最高可达1000脉冲/s）、电极尖端与水面之间的气隙距离对等离子体放电特性和H2O2生成效率的影响。两种类型的放电等离子体的比较（即，直接在水中并与水面接触）。在水下放电等离子体的情况下，H2O2产生的产额效率随脉冲重复率变化很大，而在水面放电的情况下，产额效率几乎相同。水下放电的效率高于水面放电高达150 pps。从500 pps开始，水面放电的效率明显高于水下放电。针尖和水面之间的间隙距离对脉冲水面放电形成H2O2没有显著影响。
Chemical activity of underwater discharge plasma and air discharge plasma generated in contact with water surface in form of streamer channels propagating along the water surface has been investigated using hydrogen peroxide as chemical probe. Point-to-plane electrode geometry and pulse high voltage of positive polarity generated with magnetic pulse compression (MPC) pulsed power modulator was used. The effects of pulse repetition rate (up to 1 000 pulses per second), air gap distance between electrode tip and water surface on the discharge characteristics and the efficiency of H2O2 production by plasma was determined. The comparison of both types of discharge plasmas (i.e., directly in water and in contact with water surface) was made. The production yield efficiency of H2O2 generation widely varied with pulse repetition rate in the case of underwater discharge plasma, while it was almost the same in the case of water surface discharge. The efficiency of underwater discharge was higher than that of water surface discharge up to 150 pps. From 500 pps the efficiency of water surface discharge was significantly higher than that of underwater discharge. No significant effect of gap distance between the needle tip and water surface on the formation of H2O2 by the pulsed water surface discharge has been determined.