将有序介孔碳材料(OMC)按照一定的质量比例(0.01、0.02、0.04、0.08)加入石墨型氮化碳材料(g-C3N4)再低温煅烧获得了介孔碳/石墨型氮化碳复合材料(OMC/g-C3N4)。可见光下光催化降解2,4-氯酚的实验结果表明,有序介孔碳材料提高了复合材料的吸附和光催化性能,去除吸附作用后,样品0.04-OMC/g-C3 N4的光催化效率为纯氮化碳的3.68倍。降解产物的气相色谱-质谱分析结果表明2,4-氯酚的降解主要是被羟基自由基脱氯和甲基化成其他中间后再被逐步分解完全矿化, Langmuir-Hinshelwood模型分析结果表明其光催化降解过程符合为一级反应动力学。%Abstact:OMC/g-C3 N4 composites were prepared by simple low-temperature thermal treatment of the mixture of Ordered mesoporous carbon and Graphited carbon nitride in varied mass ratio. The results of visible-light driven photodegradation of 2,4-DCP showed that the adsorptive and catalytic activities of OMC/g-C3 N4 composites were both greatly enhanced, photo-catalytic removel efficiency of sample 0.04-OMC/g-C3 N4 was 3.68 times of pure g-C3 N4 leaving out the adsorption. According to the results of GC-MS analysis of photo-degradation productions, 2,4-DCP were disintegrated into other intermediate products by the dechlorination and mathelation of generated hydroxyl radical, before being totally mineralized gradually, and the photocatalytic reaction were well fitted to the first order kinetics based on the Langmuir-Hinshelwood model.
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