Decomposition of Methylene Blue by using an Atmospheric Plasma Jet with Ar, N

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概要

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• We have performed experiments on the decomposition of methylene blue by using an atmospheric plasma jet with various working gases. The decomposition efficiencies of Ar, N<inf>2</inf>, and O<inf>2</inf>plasmas are almost equivalent; on the other hand, the rate of methylene blue decomposition by air plasma is lower than those by the other plasmas. From the absorption spectra, it has been found that HONO (nitrous acid) is produced by air plasma-liquid reactions. It has been clarified by a series of experiments, where oxygen concentration in N<inf>2</inf>plasma is varied, that the concentration of HONO increases and the rate of methylene blue decomposition degrades with increasing oxygen gas flow rate. Furthermore, the presence of nitrate ions and nitrite ions was confirmed by ion chromatography and pH measurement.

• 2013-05-25

著者

• Yamaguchi Naohiro

  Physics Lab., Liberal Arts and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan

• Hara Tamio

  X-ray Laser and Plasma Engineering Laboratory, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan

• Takemura Yuichiro

  Department of Electric and Electronic Engineering, Faculty of Science and Engineering, Kinki University, Higashiosaka, Osaka 577-8502, Japan

• Yamaguchi Naohiro

  Physics Laboratory, Liberal Arts and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan

関連論文

• Development of Atmospheric Pressure Plasma Jet with Slit Nozzle
• Laser-Plasma X-ray Sources Using Ceramic Target
• Decomposition of Methylene Blue by using an Atmospheric Plasma Jet with Ar, N

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