期刊论文

中文

环境科学

0250-3301

2011

32

7

1974-1979

10.13227/j.hjkx.2011.07.028

国家自然科学基金项目（50778065）； 欧盟国际合作项目ASEMWaterNet（PL510897）； 湖南省自然科学基金项目（08JJ3103）； 湖南省科学计划项目（2010SK3042）；

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碳纳米管负载TiO2复合光催化剂与纳米TiO2光催化剂对1,2,4-三氯苯的光催化降解效果,及降解动力学的研究结果表明,复合光催化剂比纳米TiO2有更好的光催化降解效果,经254 nm紫外光辐照60 min后,使用复合光催化剂的1,2,4-三氯苯降解了70%,而使用纳米TiO2为催化剂的1,2,4-三氯苯仅降解了51%;光催化降解动力学研究也表明复合光催化剂对1,2,4-三氯苯光催化反应速率常数为0.019 6 h^-1,比纳米TiO2提高了63.3%.根据分子结构理论,对氯苯化合物的C—Cl键离解能分析可推测1,2,4-三氯苯的主要光降解路径为：先脱去邻位的Cl生成1,4-二氯苯,然后再进一步脱氯,最终彻底矿化.通过实验检测1,4-二氯苯作为1,2,4-三...

Effects and kinetics of photocatalytic degradation of 1,2,4-trichlorobenzene with composite photocatalysts of TiO2 coated on carbon nanotubes and nano-TiO2 photocatalysts were studied,respectively.It was found that the composite photocatalysts was better than the nano-TiO2 for photocatalytic degradation of 1,2,4-trichlorobenzene.After 60 min UV irradiation at 254 nm,there was 70% of the initial 1,2,4-trichlorobenzene degraded with the composite photocatalyst while only 51% of the initial 1,2,4-trichlorobenzene degraded with the nano-TiO2.Result...