软化学法合成金红石相TiO2纳米线阵列及光催化性能研究

he ordered TiO2 nano-wire arrays with rutile phase were synthesized on the glass substrates by the soft chemistry method using TiCl4, Ti(OC4H9)4 as raw materials. The as-prepared TiO2 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The photocatalytic performance of the TiO2 nano-wire arrays was determined by degradation of methyl orange molecules in water under UV light irradiation. The results revealed that the TiO2 nano-wire arrays were consist of rutile phase, and the nano-wires grew along vertical direction of the substrates with ordered and uniform structures. The diameters of the TiO2 nano-wires were about 100-200nm, and increased with extending of synthesis time. The photocatalytic tests indicated that the TiO2 nano-wire arrays (180℃ 10％HCl 12h) showed the highest photocatalytic activities, the decoloration rate of methyl orange solutions reached 84.2% after irradiated for 3h.