Characteristics of Light Emission and Radicals Formed by Contact Glow Discharge Electrolysis of an Aqueous Solution
Characteristics of Light Emission and Radicals Formed by Contact Glow Discharge Electrolysis of an Aqueous Solution
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水溶液接触辉光放电电解产生的发光和自由基的特性
DOI：
10.1007/s11090-011-9347-7
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发表时间：
2012-04-01
影响因子：
3.6
通讯作者：
Wang, Degao
中科院分区：
文献类型：
--
作者：
Liu, Yongjun;Sun, Bing;Wang, Degao
本文研究了接触辉光放电电解过程中等离子体产生的光发射和自由基。等离子体是通过在与硫酸溶液接触的Pt阳极的尖端处的辉光放电产生的。当外加电压高于430 V时，观察到H原子和OH自由基的发射。当施加的电压增加到450 V时，另外检测到O原子的发射。这些自由基和原子的发射强度随外加电压的增加而增加。当施加的电压超过460 V时，来自Pt阳极的热辐射在可见光和近红外区域中是明显的。通过比较Hα和Hβ线的强度，发现在1.0 × 104 ~ 1.5 × 104 K范围内，等离子体的电子温度随外加电压的增加而增加。用斯塔克展宽法估计平均电子密度为7.4 × 1017 cm − 3。
In this work, light emissions and radicals formed by plasma of contact glow discharge electrolysis were investigated. The plasma was generated by glow discharges at the tip of a Pt anode in contact with a sulfuric acid solution. Emissions of H atoms and OH radicals were observed when the applied voltage was above 430 V. When the applied voltage increased to 450 V, emissions of O atoms were additionally detected. The emission intensities of these radicals and atoms increased with the increasing applied voltage. When the applied voltage exceeded 460 V, thermal radiation from the Pt anode was apparent in the visible and near infrared region. Electron temperature of the plasma increased with the applied voltage from 1.0 × 104to 1.5 × 104K by comparison of the intensities of Hαand Hβlines. The mean electron density was estimated to be 7.4 × 1017cm−3by the method of Stark broadening.