Radio Frequency Plasma in Water
Radio Frequency Plasma in Water
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DOI：
10.1143/jjap.45.8864
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发表时间：
2006-11
影响因子：
1.5
通讯作者：
T. Maehara;H. Toyota;M. Kuramoto;A. Iwamae;Atsushi Tadokoro;S. Mukasa;H. Yamashita;A. Kawashima;S. Nomura
中科院分区：
文献类型：
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作者：
T. Maehara;H. Toyota;M. Kuramoto;A. Iwamae;Atsushi Tadokoro;S. Mukasa;H. Yamashita;A. Kawashima;S. Nomura
我们通过从电极施加13.56 MHz的RF功率在大气压下在水中产生射频（RF）等离子体。等离子体是在水中形成的气泡中。根据热平衡假设下的氢谱线，估计等离子体的温度为4000-4500 K。光谱测量表明氢和氧在等离子体中被激发。等离子体也可以在自来水或具有高电导率的NaCl溶液中获得。在溶液中，观察到钠光谱线。将含有亚甲蓝的有色水暴露于等离子体。有色水在暴露于等离子体之前和之后的吸收光谱表明由于涉及活性物质（例如OH-自由基）的化学反应而导致的有机物质的分解。
We generate a radio frequency (RF) plasma in water at an atmospheric pressure by applying an RF power of 13.56 MHz from an electrode. The plasma is in a bubble formed in water. On the basis of hydrogen spectral lines under the assumption of thermal equilibrium, the temperature of the plasma is estimated to be 4000–4500 K. Spectroscopic measurements show that hydrogen and oxygen are excited in the plasma. The plasma is also obtained in tap water or NaCl solution with a high conductivity. In the solution, sodium spectral lines are observed. Colored water containing methylene blue is exposed to the plasma. The absorbence spectra of the colored water before and after exposure to the plasma suggest the decomposition of organic matter due to chemical reactions involving active species, such as OH-radicals.