最近,用半导体光催化分解有害物质的研究引起人们极大兴趣,这是因为选择适当的半导体催化剂可以利用太阳能处理毒物,节约能源。同时如TiO_2这样的半导体的光生空穴具有很强的氧化能力,能分解许多有机物质。而且将它们最终分解为二氧化碳、水和无机物,避免通常用化学方法处理废水带来的二次污染。在毒物被氧化成最终产物的过程中,有许多氧化的中间物产生,因此研究中间体的形成对了解反应机理是十分重要的。 Recently, the use of semiconductor photocatalytic decomposition of harmful substances caused great interest in people, because the choice of appropriate semiconductor catalyst can use solar energy to deal with poison, save energy. At the same time, such as TiO_2 photo-generated holes in the semiconductor has a strong oxidizing ability to decompose many organic substances. And they are eventually broken down into carbon dioxide, water and minerals to avoid the usual chemical treatment of wastewater secondary pollution. There are many oxidized intermediates in the process of poison being oxidized to the final product, so it is very important to understand the reaction mechanism to study the formation of intermediates.