کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6469480 | 1423973 | 2017 | 4 صفحه PDF | دانلود رایگان |
- Breakdown anodization of Bi substrates in H2SO4 electrolyte was carried out.
- Bismuth aqua sulfate hydroxide needle bundles were produced as a result.
- Upon subsequent annealing in air at 250 °C, tetragonal β-Bi2O3 needles were formed.
- The anodic growth of the needles was investigated in detail.
A new Bi2O3 structure resembling bundles of needles was prepared by anodic oxidation of a bismuth substrate in H2SO4 electrolyte followed by annealing in air. Needle growth occurred on the timescale of minutes. The resulting porcupine-like needle bundles were characterized using SEM and XRD before and after annealing. The as-grown needles consisted of bismuth aqua sulfate hydroxide; however, upon annealing at 250 °C in air, tetragonal β-Bi2O3 was produced without any morphological change.
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Journal: Electrochemistry Communications - Volume 84, November 2017, Pages 6-9