Dispersed-phase Interfaces between Mist Water Particles and Oxygen Plasma Efficiently Produce Singlet Oxygen (<sup>1</sup>O<sub>2</sub>) and Hydroxyl Radical (•OH)

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  • MATSUO Keishi
    Division of Functional Interface Engineering, Department of Biological Functions and Engineering, Kyushu Institute of Technology
  • TAKATSUJI Yoshiyuki
    Division of Functional Interface Engineering, Department of Biological Functions and Engineering, Kyushu Institute of Technology Advanced Catalytic Transformation program for Carbon utilization (ACT-C), Japan Science and Technology Agency (JST)
  • KOHNO Masahiro
    Department of Bioengineering, Tokyo Institute of Technology
  • KAMACHI Toshiaki
    Department of Bioengineering, Tokyo Institute of Technology
  • NAKADA Hideo
    Ebara Jitsugyo Co,. Ltd.
  • HARUYAMA Tetsuya
    Division of Functional Interface Engineering, Department of Biological Functions and Engineering, Kyushu Institute of Technology Research center for Eco-fitting Technology Advanced Catalytic Transformation program for Carbon utilization (ACT-C), Japan Science and Technology Agency (JST)

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Other Title
  • Dispersed-phase Interfaces between Mist Water Particles and Oxygen Plasma Efficiently Produce Singlet Oxygen (¹O₂) and Hydroxyl Radical (・OH)
  • Dispersed-phase Interfaces between Mist Water Particles and Oxygen Plasma Efficiently Produce Singlet Oxygen (<sup>1</sup>O<sub>2</sub>) and Hydroxyl Radical (&bull;OH)
  • Dispersed-phase Interfaces between mist water particles and oxygen plasma efficiently produce singlet oxygen 1O2 and hydroxyl radical (·OH)

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Abstract

Efficient generation of oxygen radicals and reactive oxygen was successfully performed at the dispersed-phasic interface between vapor-water and oxygen plasma in a reaction chamber having an internal atmosphere with a normal-pressure and temperature. In the space of the reactor chamber (radical vapor reactor [RVR]), the gas phase was strictly controlled in terms of vaporized water (small water mist), temperature, plasma conditions, and UV irradiation. According to spin-trapping electron spin resonance analysis, the RVR efficiently and quantitatively yielded two types of reactive oxygen species (1O2 and OH radical) with the atmosphere of the RVR chamber. This is the report of the efficient, quantitative production of reactive oxygen in an atmosphere. The reactivity of the produced 1O2 and OH radical may be applicable for various chemical processes, such as oxidation and electron absorption.

Journal

  • Electrochemistry

    Electrochemistry 83 (9), 721-724, 2015

    The Electrochemical Society of Japan

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