P27 二酸化チタン・超音波法によるOHラジカルの生成と溶存アルゴンの促進効果(ポスターセッション)

抄録

Generation of OH radicals by ultrasound irradiation in the presence of TiO_2 was studied. The effects of dissolved argon and xenon applied into the irradiating solutions were studied in the presence of TiO_2. Heat capacity ratio of argon and xenon is higher than that of nitrogen and oxygen. Higher heat capacity ratio of dissolved argon and xenon causes higher local temperature when cavitation bubble collapsed, and it results in the induced pyrolysis of H_2O and generation of OH radicals. Further, the effect of the photocatalysis of TiO_2 may be more intensified by high temperature and sonoluminescence.