天然含钒金红石降解卤代烃实验研究  

An experimental study on photocatalytic degradation of halohydrocarbons by natural vanadiferous rutile

作　　者：李巧荣[1] 鲁安怀[2] 李宁[2] 刘娟[2] 郭延军[2] 

机构地区：[1]中国地质大学材料科学与工程学院,北京100083 [2]北京大学地球与空间科学学院,北京100871

出　　处：《岩石矿物学杂志》2003年第4期345-348,共4页Acta Petrologica et Mineralogica

基　　金：国家重大基础研究前期研究专项资助项目 ( 2 0 0 1CCA0 2 40 0 ) ;国家自然科学基金资助项目 ( 4 0 172 0 2 2 )

摘　　要：利用天然金红石光催化降解卤代烃 ,在 1h内对三氯乙烯和四氯乙烯的降解率分别达到 82 .5 4 %和94 .4 3% ,对三氯甲烷也有一定的降解作用。经电子辐射的金红石光催化活性降低 ,卤代烃的降解率低于原样 ;经加热和淬火处理的金红石样品表面钒含量增加 ,光催化活性提高 ,能将浓度 4 0 0 μg/L左右的三氯乙烯和四氯乙烯降解到 5Natural rutile was used as a catalyzer to oxidize halohydrocarbons. The result shows that natural rutile has some photocatalytic capability. Such means as electron radiation, quenching and heat treatment were employed to improve the performance of natural rutile, and the ameliorative specimens were used to conduct photocatalytic oxidation of three kinds of halohydrocarbons. The effect shows that both quenching and heat treatment can improve the performance of rutile as a catalyzer. The tetrachloroethylene and trichloroethylene can be decomposed from 400 μg/L to 5 μg/L, whereas electron radiation seems not a feasible method to improve natural rutile. The study has laid a foundation for further researches.

关 键 词：天然含钒金红石 光催化氧化 光催化降解 卤代烃 水体有机污染物 光催化活性 

分 类 号：P578.47[天文地球—矿物学] X52[天文地球—地质学]