CdTiO3纳米棒的可控制备及光催化产氢性能

摘要

以钛-乙二醇配合物纳米棒为模板,结合湿浸渍焙烧法制备了不同长度的钛酸镉( CdTiO3)纳米棒.采用扫描电子显微镜( SEM)、透射电子显微镜( TEM)、广角X射线粉末衍射仪( XRD)、傅里叶变换红外光谱仪( FTIR)、热重分析仪( TG)及紫外-可见光谱仪( UV-Vis)等对前驱体及CdTiO3纳米棒进行了表征.结果表明,得到的CdTiO3纳米棒长度分别约为50,20和10μm,且无杂相,晶化度高,尺寸均一.负载1%(质量分数)铂作为助催化剂后,制备的不同长度CdTiO3纳米棒具有比CdTiO3纳米粒子更高的光催化产氢活性.其中,最长的CdTiO3纳米棒具有最高的产氢活性(~52.9μmol/h).%CdTiO3 nanorods with different length were prepared from titanium glycolate nanorod template, combined with wet impregnation method and further calcination. The samples were characteried by scanning electron microscope ( SEM ) , transmission electron microscope ( TEM ) , wide-angle X-ray diffractometer (XRD), Fourier transform infrared spectrometer(FTIR), thermogravimetric analyser(TG) and ultraviolet-visible spectrometer(UV-Vis). The prepared CdTiO3 nanorods are uniform with high crystallinity and high purity, and are about 50, 20, 10 μm in length, respectively. After loaded 1%( mass fraction) platinum as co-catalyst, their photocatalytic properties for H2 production were studied. Compared with CdTiO3 nanoparti-cles, the CdTiO3 nanorods show higher photocatalytic activity. The H2 producton performance for the longest nanorods is up to 52. 9 μmol/h.