采用溶胶-凝胶和浸渍掺杂两步法合成了CeO2/TiO2光催化剂,并对催化剂的理化结构进行表征分析;以吡啶-正辛烷体系为模拟油品氮源,研究了该催化剂在可见光作用下的光催化脱氮行为,并探究了光催化脱氮的最佳反应条件.结果表明,掺杂的铈主要以CeO2的形式存在,且增强了催化剂在可见光区的吸收;在可见光辐照150 min的条件下,铈的掺杂量质量分数为8％,所制备的CeO2/TiO2催化剂投入量为1.0 g/L时,模拟油品中吡啶的脱氮率高达76.45％.
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