锐钛矿型TiO_2纳米线的水热法制备及其光电性能的研究

Preparation of Anatase TiO_2 Nanowires by Hydrothermal Method and Study on Their Photoelectric Properties

利用水热技术制备了锐钛型的TiO2纳米线(TNWs),研究了不同的水热反应时间,水热反应温度以及所用碱的浓度对所制备的纳米线的形貌的影响。采用XRD技术和SEM技术对纳米线的成分及其形貌进行了表征。将TNWs与TiO2(P25)混合分散于水和乙醇的混合溶剂中,制得均匀稳定的浆体,涂敷于不锈钢基体表面,进行光电化学性能的测试,结果表明,当TNWs的掺杂量为5%(w)时,薄膜的光电性能最优。

Anatase TiO2nanowires（ TNWs） were prepared by hydrothermal technique. The effects of hydrothermal reaction time,hydrothermal reaction temperature and concentration of NaOH on the morphology of TNWs were studied. XRD and SEM were used to characterise the the composition and morphology of TNWs respectively. TNWs and TiO2（ P25） were dispersed in the blended solvent of water and ethanol,receiving uniform and stable slurry. The slurry was coated on surface of the stainless steel substrate to test photoelectric performance. The results show that thin film exhibits the best photovoltaic performance when the doping content of TNWs is 5%（ w）.