基于氧化钛纳米管模板电沉积氧化锌纳米棒

研究了氧化锌纳米棒在用二次阳极氧化法制备的二氧化钛纳米管模板表面的电沉积生长。与一次阳极氧化法对比,以二次阳极氧化法获得的氧化钛纳米管薄膜为模板,更有利于形貌均一、取向一致的ZnO纳米棒的电沉积生长,并且在电解质溶液中添加六次甲基四胺(HMT)、适当延长沉积时间均可提高ZnO纳米棒的结晶度和择优生长趋势。当沉积电压为1.0~1.5 V时,可获得形貌规则的ZnO纳米棒;而电压继续增大时,ZnO沿c轴择优生长趋势消失,电沉积产物氧化锌纳米棒由六边形氧化锌纳米片取代。

Electrodeposition Growth of ZnO Nanorods on a TiO2 Nanotube Template Prepared by Two-Step Anodization

ZnO nanorods were electrodeposited on a TiO2 nanotube template prepared by two-step anodization. Compared with that by one-step anodization, the TiO2 nanotube template prepared by two-step anodization is more conducive to electrodeposition growth of ZnO nanorods with the uniform morphology and consistent orientation. The crystallinity and preferential growth of ZnO nanorods can be improved by adding hexamethylenetetramine amine (HMT) in the electrolyte and an appropriate extension of the deposition time. The ideal ZnO nanorods can be obtained when the deposition voltage is in the range of 1.0~1.5 V. When the voltage continues to increase, the electrodeposition products ZnO are changed from the nanorods to the hexagonal nanosheets due to the disappearance of the preferred growth along the c-axis of zinc oxide