利用简单的水热法在FTO基底上制备了TiO₂纳米棒阵列，研究了水热反应温度、钛酸丁酯加入量、水热反应时间、盐酸浓度等因素对TiO₂纳米棒阵列形貌的影响。结果表明，随着水热反应温度在150~180℃之内升高，纳米棒的径向生长加快，纳米棒阵列的面密度和空隙减小；随着钛酸丁酯的用量增大，水热溶液中晶核形成速度加快，促进了TiO₂纳米棒的径向和轴向生长，但TiO₂纳米棒阵列的面密度基本保持不变，纳米棒之间的空隙减小；随着水热反应时间的增加，TiO₂纳米棒主要沿着轴向生长，径向宽度基本保持不变；随着盐酸浓度的增大，TiO₂纳米棒阵列的面密度逐渐减小，纳米棒之间的空隙不断增大。

TiO₂ nanorod arrays are prepared onto FTO substrates through facile hydrothermal method.The effects of reaction temperature,concentration of tetrabutyl titanate,reaction time and concentration of hydrochloric acid on the morphology of TiO₂ nanorod arrays are studied.The growth of TiO₂ nanorod increases along radial direction,both the areal densities and voids of TiO₂ nanorod arrays reduce as the hydrothermal reaction temperature increases in the range of 150℃ and 180℃.As the adding amount of tetrabutyl titanate increases,the growth rates of TiO₂ nanorod along radial and axial directions both increase,but the areal densities of TiO₂ nanorod arrays almost remain unchanged and the voids reduce.As the reaction time increases,the TiO₂ nanorod arrays grow along the axial direction and the radial size keeps unchanged.As the concentration of hydrochloric acid increases,the areal densities of TiO₂ nanorod arrays reduce and the voids among the nanorods increase.

刘仁兵(1966-),男,博士,教授,研究方向为纳米材料制备技术,447475723@qq.com