Bibliographic Details
| Title: |
A convenient way of manufacturing silicon nanotubes on a silicon substrate. |
| Authors: |
Zhang, Changchang1, Cheng, Heming1, Liu, Xiang1 liuxiang@ahut.edu.cn |
| Source: |
Materials Chemistry & Physics. Jul2016, Vol. 177, p479-484. 6p. |
| Subjects: |
Silicon nanowires, Substrates (Materials science), Chemical sample preparation, Porous silicon, Chemical reactions, Aqueous solutions |
| Abstract: |
A convenient approach of preparing silicon nanotubes (SiNTs) on a silicon substrate is described in this work in detail. Firstly, a porous silicon (PSi) slice is prepared by a galvanic displacement reaction. Then it is put into aqueous solutions of 20% (w%) ammonium fluoride and 2.5 mM cobalt nitrate for a predetermined time. The cobalt ions are reduced and the resulted cobalt particles are deposited on the PSi slice. After the cobalt particles are removed with 5 M nitric acid a plenty of SiNTs come out and exhibit disorderly on the silicon substrate, which are illustrated by scanning electron microscopy (SEM). The compositions of the SiNTs are examined by energy-dispersive X-ray spectroscopy. Based on the SEM images, a suggested mechanism is put forward to explain the generation of the SiNTs on the PSi substrate. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
