摘要
制备了反-二羟基-5,10,15,10-四苯基卟啉锡敏化的TiO2纳米管,并以对硝基苯酚为模型污染物,对其在可见光照射下的光催化活性进行了研究。同时,将卟啉锡敏化的TiO2纳米粒子作为参照物,探讨了形貌对催化剂光催化活性的影响。实验结果表明,卟啉锡的引入可以明显地增强TiO2纳米管的可见光催化活性。与TiO2纳米粒子相比,卟啉锡对TiO2纳米管的敏化作用更加显著,表明催化剂的形貌在光催化过程中具有重要作用。此外,我们还考察了卟啉锡敏化的TiO2纳米管的光电化学行为,并与其光催化活性相关联。最后,对卟啉锡的敏化机理进行了初步的探讨。
TiO2 nanotubes sensitized with trans-dihydroxo[5,10,15,10-tetraphenyl porphyrin] tin（Ⅳ） （abbreviated to SnTPP） were prepared. The photocatalytic activity of SnTPP-sensitized TiO2 nanotubes were evaluated by using p-nitrophenol as a model contaminant under visible light irradiation. Meanwhile, SnTPP-sensitized TiO2 nanoparticles were selected as a reference substance to explore the effect of morphology on the photocatalytic activity of catalysts. The experimental results show that introduction of SnTPP can significantly enhance the visible light photocatalytic activity of TiO2 nanotubes. And TiO2 nanotubes show higher sensitizing effect of SnTPP than TiO2 nanoparticles, indicating that the morphology of a catalyst plays an important role in the photocatalytic process. In addition, the photoelectrochemical behavior of SnTPP-sensitized TiO2 nanotubes was examined and related with the photocatalytic activity. Finally, the sensitizing mechanism of SnTPP was discussed preliminarily.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2014年第2期331-336,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金重点(No.20933007)资助项目
关键词
卟啉锡
敏化
二氧化钛纳米管
光催化
porphyrin tin
sensitization
TiO2 nanotubes
photocatalysis
