软模板法制备TiO<sub>2</sub>纳米棒

软模板法制备TiO₂纳米棒

摘要: 一维纳米TiO₂由于比表面积大,长径比高,在工业废水处理中既能充分发挥TiO₂的光催化活性,又易分离,故开展TiO₂一维纳米材料的研究有重要价值。本文确定了制备TiO₂纳米棒最优的工艺条件,用XRD、SEM、FT-IR、TGA-DSC对产物的结构与性能进行了表征。所制备的纳米TiO₂呈棒状且为锐钛矿型。利用紫外光催化降解甲基橙的效果考察了这种光催化剂的活性,结果表明,其降解率较用sol-gel法制备的TiO₂粉末的降解率提高了10%左右。

Abstract: One-dimensional TiO₂,for its large surface area and high aspect ratio,not only can play fully photocatalytic role of TiO₂ in the industrial wastewater treatment,but also is easy to be separated,so the research on it has significant value.In this paper,the optimum condition to obtain TiO₂ nanorods is determined.Then the phase and morphology of TiO₂ are characterized by means of XRD、SEM、FT-IR、TGA-DSC.TiO₂ appears in a form of nonarod,and belongs to anatase.Use of UV degradation of methyl orange is employed to examine the effect of photocatalytic activity of the TiO₂ nanorods.The results show that compared with the degradation rate of sol-gel TiO₂ powder the degradation rate of TiO₂ nanorods increased about 10%.