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以水热法生长ZnO纳米棒阵列为模板,利用液相沉积法成功制备了TiO2纳米管阵列,并系统研究了液相沉积液浓度和沉积时间对ZnO纳米棒的溶解情况,以及所制备TiO2纳米管阵列的场发射性能。实验结果表明:硼酸浓度越大、沉积时间越长,对ZnO纳米棒的溶解作用越明显,因而越不利于TiO2纳米管的制备。利用该种方法制备的TiO2纳米管长径比和致密性可通过ZnO纳米棒的水热生长条件来控制,本实验制备的TiO2纳米管具有优异的场发射性能,其开启场强为4.60 V/μm,场增强因子为10239。
The ZnO nanorod arrays were grown by hydrothermal method as template. The TiO2 nanotube array was successfully prepared by liquid-phase deposition method. The dissolution of ZnO nanorods was studied systematically. Field emission performance of tube array. The experimental results show that the larger the concentration of boric acid, the longer the deposition time, the more obvious the dissolution of the ZnO nanorods, which is not conducive to the preparation of TiO2 nanotubes. The aspect ratio and compactness of TiO2 nanotubes prepared by this kind of method can be controlled by the hydrothermal growth conditions of ZnO nanorods. The prepared TiO2 nanotubes have excellent field emission performance with an open field strength of 4.60 V / μm, the field enhancement factor is 10239.