Anodization is a widespread surface treatment method for aluminum and its alloys; it also allows the formation of 1D nanostructures by a two-step process. Microstructure of the Al substrate and crystallographic texture after rolling and annealing have influence on the properties of AAO templates with conical nanopores. Synthesized free-standing 1D nanostructures ensure better electrocatalytic properties than bulk materials due to larger active surface area. In this work, the influence of annealing time at 500 °C on Vickers hardness and microstructure of aluminum AA1050 used in a two-step anodization process was investigated. The geometrical features of the templates such as interpore distance and number of pores per 1 μm² were determined and compared. There is dependence between the time of the annealing process and surface quality of synthesized 1D Cu nanocone layers. The template, after 1 h of annealing, due to the largest active area and satisfactory quality of the nanocone surface, was chosen for synthesis of Co nanocones. The electrocatalytic properties of samples were measured in 1 M NaOH solution and compared with bulk material electrodeposited in the same conditions. The open circuit potential, connected with starting of hydrogen evolution reaction, was determined from the LSV curves. Active surface areas were determined for all samples using SEM photographs and taken into consideration during electrocatalytic tests. Possible behavior of hydrogen bubbles for the formation of nanostructures was considered.

阳极氧化是铝及其合金的一种广泛的表面处理方法。它还允许通过两步过程形成一维纳米结构。铝基体的微观结构和轧制和退火后的晶体织构对具有锥形纳米孔的AAO模板的性能有影响。合成的独立式一维纳米结构由于具有较大的有效表面积，因此与散装材料相比可确保更好的电催化性能。在这项工作中，研究了在两步阳极氧化工艺中使用的500 A退火时间对AA1050铝的维氏硬度和显微组织的影响。模板的几何特征，例如每1μm孔的interpore距离和数目²被确定和比较。退火过程的时间与合成的一维Cu纳米锥层的表面质量之间存在依赖性。退火1 h后，由于最大的活性区域和纳米锥表面的令人满意的质量，选择了该模板用于合成Co纳米锥。在1 M NaOH溶液中测量样品的电催化性能，并与在相同条件下电沉积的块状材料进行比较。由LSV曲线确定与氢释放反应的开始有关的开路电势。使用SEM照片确定所有样品的活性表面积，并在电催化测试中予以考虑。考虑了氢气泡可能用于形成纳米结构的行为。