An electrolyte-free system for ozone generation using heavily boron-doped diamond electrodes

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• 作者：Yuki Honda ; Tribidasari A. Iv ; ini ; Takeshi Watanabe ; Kazutaka Murata ; Yasuaki Einaga
• 关键词：Boron-doped diamond (BDD) ; Electrolyte-free ; Ozone generation ; sp2 impurities
• 刊名：Diamond and Related Materials
• 出版年：November, 2013
• 年：2013
• 卷：40
• 期：Complete
• 页码：7-11
• 全文大小：776 K

文摘

An electrolyte-free system for electrochemical ozone generation was developed using boron-doped diamond (BDD) electrodes as the anode and cathodes in combination with Nafion庐 N117/H⁺ as the separating membrane. Trials using BDD with various B/C ratios suggested that heavily boron-doped BDD with sp² impurities yielded high concentration of ozone. Further experiments by replacement of the feedstock solutions with 0.85 M Na₂SO₄ or 0.85 M NaCl resulted in no significant difference, suggesting that the use of pure water as the feedstock is the most appropriate method for ozone production. A high efficiency could be achieved by applying water as a feedstock for the anode and the cathode chambers. In addition, comparison with Pt electrodes confirmed that the excellent structural stability of BDD was the main factor contributing to this success.