【摘要】 采用一种全新的方法实现了无氟、在阳离子聚合物参与下合成具有丰富(001)面的锐钛矿TiO2晶体(TiO2-P),并通过X射线衍射、扫描电镜、透射电镜、紫外-可见光谱等手段对样品进行了表征.光催化测试显示,该样品对甲基橙的降解具有比常规锐钛矿TiO2和商业P25更好的活性,这可归因于TiO2-P具有大量的暴露(001)晶面.更多还原

【Abstract】 Controllable syntheses of anatase TiO2 rich in(001) facets have attracted much attention because of the excellent photocatalytic activity of this material in dye degradation.These syntheses are nor- mally performed in the presence of fluoride,which is environmentally unfriendly.In this study, anatase TiO2 crystals rich in(001) facets were successfully synthesized in the presence of a cationic polymer and characterized using X-ray diffraction,scanning electron and transmission electron microscopies,and ultraviolet-visible spectroscopy.Photocatalytic tests showed that this material is very active in the degradation of methyl orange compared with conventional anatase TiO2 crystals and a commercial P25 photocatalyst.The high activity is attributed to the rich(001) facets transla- tion.更多还原