A kind of phosphide tantalum oxide nanotube and preparation method thereof
A nanotube, tantalum oxide technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as limited application, and achieve the effect of simple preparation process, easy and controllable experimental conditions
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Embodiment 1
[0031] A kind of phosphide Ta 2 o 5 The preparation technology of nanotube comprises the following steps:
[0032] (1) Cut the tantalum sheet into 20mm×25mm squares, first wash it with detergent water for 3 times, each time for 20 minutes, to remove surface oil; then use distilled water and deionized water respectively for 3 times, each time for 20 minutes, Remove the impurities on the surface of the tantalum sheet; finally, use absolute ethanol to ultrasonic 3 times to remove the organic impurities on the surface of the tantalum sheet, dry it with nitrogen and keep it sealed for later use;
[0033] (2) Preparation of Ta 2 o 5 For the nanotubes, tantalum oxide nanotubes were first prepared by anodic oxidation, and the cleaned tantalum sheet (20×25mm, thickness 0.01mm, purity 99%) was used as the anode, and the platinum sheet was used as the cathode, and the distance between the two electrodes was 4cm. The selected electrolyte is 1vol% hydrofluoric acid (HF, 40%), 4vol% sec...
Embodiment 2
[0038] (1) adopt the same method as in embodiment 1 step (1) to clean tantalum sheet;
[0039] (2) Preparation of Ta 2 o 5 For the nanotubes, tantalum oxide nanotubes were first prepared by anodic oxidation, and the cleaned tantalum sheet (20×25mm, thickness 0.01mm, purity 99%) was used as the anode, and the platinum sheet was used as the cathode, and the distance between the two electrodes was 4cm. The selected electrolyte is 1vol% hydrofluoric acid (HF, 40%), 9vol% secondary water and concentrated sulfuric acid (H 2 SO 4 , 98%) composition. Conditions of anodizing: voltage 50V, anodizing time 30min, the finally obtained sample is light gray, and Ta 2 o 5 nanotubes; SEM images ( Figure 4 ) shows the Ta 2 o 5 Nanotubes show a nice tubular structure.
[0040] (3) Ta obtained after the anodic oxidation reaction in step (2) 2 o 5 Place the nanotubes in a porcelain boat, raise the temperature to 550°C at a rate of 1°C / min in air, and keep it for 1h to obtain a stable T...
Embodiment 3
[0044] (1) adopt the same method as in the implementation example 1 step (1) to clean the tantalum sheet;
[0045] (2) Preparation of Ta 2 o 5 Nanotubes, in this paper, tantalum oxide nanotubes were first prepared by anodic oxidation method, the cleaned tantalum sheet (20×25mm, thickness 0.01mm, purity 99%) was used as the anode, the platinum sheet was used as the cathode, and the distance between the two electrodes was 4cm . The selected electrolyte is 1vol% hydrofluoric acid (HF, 40%), 4vol% secondary water and concentrated sulfuric acid (H 2 SO 4 , 98%) composition. Conditions of anodizing: voltage 60V, anodizing time 30min, the finally obtained sample is light gray and Ta 2 o 5 nanotube;
[0046] (3) Ta obtained after the anodic oxidation reaction in step (2) 2 o 5 Place the nanotubes in a porcelain boat, raise the temperature to 550°C at a rate of 1°C / min in air, and keep it for 1h to obtain a stable Ta 2 o 5 nanotube;
[0047] (4) Ta in step (3) 2 o 5 The n...
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