• 作者： Do, Jing-Shan; Yeh, Wen-Chin
• 中文摘要： 本文中探討在石墨與自製的陽極上電解生成次氯酸根離子,並利用電解生成之次酸根離子即時氧化降解甲醛與苯甲醛。實驗結果顯示,在氯離子之分解電壓上以二氧化釕電極最小; 而SPR(SnO/sub 2/-PdO-RuO/sub 2/-TiO/sub 2/)具有最高的分解電壓。在SPR電極上之反應(氧氣的生成)被有效的抑制。在SPR電極上電解氧化氯離子之塔弗斜率與交換電流密度分別為46mV與 1.95mA/cm/sup 2/,利用SPR為陽極其電解活性面積為 44.6mC/cm/sup 2/。當甲醛起始濃度與通電量分別為3,000ppm與1,500C,降解甲醛之電流效率為69.8%。當通電量與苯甲醛之起始濃度分別為3,500C與 800ppm時,苯甲醛之降解分率為70.0%。
• 英文摘要： The generation of hypochlorite ion on graphite and the prepared anodes as well as the degradation of formaldehyde and benzaldehyde with in situ electrogenerated hypochlorite ion were investigated. The experimental results indicated that the lowest decomposition voltage of chloride ion was obtained on RuO/sub 2/ anode and the highest decomposition voltage of oxygen evolution was found on SPR (SnO/ sub 2/-PdO-RuO/sub 2/-TiO/sub 2/). The side reaction (oxygen evolution) on SPR was effectively inhibited. The Tafel slope and exchange current density of the anodic oxidation of chloride ion on SPR were 46mV and 1.95mA/cm/sup 2/, respectively. Using SPR as anodes, the catalytic area was evaluated as 44.6mC/cm/sup 2/. The current efficiency of degradation of formaldehyde was 69.8% when 1,500C was charged into the reaction system and the initial concentration of formaldehyde was 3,000ppm. The degradation fraction of benzaldehyde was 70.0% when the applied electricity and initial concentration of benzaldehyde were 3,500C and 800ppm.
• 中文關鍵字： 陽極材料; 陽極降解; 氧化還原介質; 甲醛; 苯甲醛
• 英文關鍵字： Anodic Material; Anodic Degradation; Redox Medium; Formaldehyde; Benzaldehyde