【摘要】 采用一种新型空气 (氧 )电极作现场光化学反应的 H2 O2 发生源 .该电极用空气中的氧作反应原料 ,在电极的电催化作用下生成 H2 O2 ,电流效率最高可达 90 % ,而且对溶液的 p H适应范围较广 .将这种新型的空气(氧 )电极引入光催化反应系中 ,使“光化学氧化反应”和“光催化氧化反应”同时发生在同一体系 ,在不改变光照条件下可提高有机污染物的光氧化速度 .本实验测定结果表明 :在含空气 (氧 )电极的光催化反应体系中 ,十二烷基磺酸钠 ( SDS)的降解速度比在两种独立体系中明显增大更多还原

【Abstract】 A new type of electrode using air (oxygen) as reacting substance for producing H 2O 2, which has high current efficiency of synthesizing H 2O 2 (≈90%) and is suitable for various solutions of pH 4\|11, was applied in photocatalytic degradation of organic pollutant. Experemental results showed that there was higher rate of degradation of sodium lauryl sulfate in the TiO 2 photocatalysis system containing the electrode producing H 2O 2 than in TiO 2 photocatalysis system without the electrode producing H 2O 2 or in system of photochemical induced oxidation without TiO 2 film, under condition of the same radiant intensity. The results were discussed in this paper. \ \更多还原