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Method for preparing germanium nanotubes

A technology of nanotubes and germane, which is applied in the field of preparation of nanotubes, can solve the problems of complex processes, energy consumption, and time-consuming, and achieve the effects of simple and convenient processes, scientific preparation methods, and easy implementation

Inactive Publication Date: 2013-04-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are deficiencies in the preparation method of this germanium nanotube. First, the germanium nanotube with an open end and a closed end limits its application range; The end of the nanotube close to the nickel catalyst will have high nickel residues, which is not conducive to its application; again, the process is not only complicated, but also energy-consuming and time-consuming, and it is impossible to obtain germanium nanotubes with openings at both ends and uniform nickel diffused therein. Tube

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  • Method for preparing germanium nanotubes
  • Method for preparing germanium nanotubes

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The concrete steps of preparation are:

[0021] In step 1, a through-hole alumina template with a pore diameter of 80 nm is firstly obtained by a secondary anodic oxidation method. Put the through-hole alumina template into the nickel nitrate aqueous solution with a concentration of 100g / L and soak for 60min, then use deionized water to rinse the surface of the through-hole alumina template to remove the nickel nitrate on the surface, and obtain the nickel nitrate in the hole. through-hole alumina stencil.

[0022] Step 2, first place the through-hole alumina template with nickel nitrate in the hole in a hydrogen-argon mixed atmosphere, and perform a reduction reaction at 300°C for 30 minutes; wherein, the heating rate to the reduction reaction temperature is 10°C / min. Then it was placed in a germane-hydrogen-argon mixed atmosphere, and vapor deposition was performed at 300° C. for 30 min; wherein, the germane, hydrogen and argon flow ratio in the germane-hydrogen-argo...

Embodiment 2

[0025] The concrete steps of preparation are:

[0026]In step 1, a through-hole alumina template with a pore diameter of 120 nm is firstly obtained by a secondary anodic oxidation method. Put the through-hole alumina template into the nickel nitrate aqueous solution with a concentration of 150g / L and soak for 53min, then use deionized water to rinse the surface of the through-hole alumina template to remove the nickel nitrate on the surface, and obtain the nickel nitrate in the hole. through-hole alumina stencil.

[0027] Step 2, first place the through-hole alumina template with nickel nitrate in the hole in a hydrogen-argon mixed atmosphere, and perform a reduction reaction at 320°C for 25 minutes; wherein, the heating rate to the reduction reaction temperature is 10°C / min. Then it was placed in a germane-hydrogen-argon mixed atmosphere, and vapor-phase deposited at 320°C for 25 minutes; wherein, the flow ratio of germane, hydrogen and argon in the germane-hydrogen-argon mi...

Embodiment 3

[0030] The concrete steps of preparation are:

[0031] In step 1, a through-hole alumina template with a pore diameter of 165 nm is firstly obtained by a secondary anodic oxidation method. Put the through-hole alumina template into the nickel nitrate aqueous solution with a concentration of 200g / L and soak for 45min, then use deionized water to rinse the surface of the through-hole alumina template to remove the nickel nitrate on the surface, and obtain the nickel nitrate in the hole. through-hole alumina stencil.

[0032] Step 2, first place the through-hole alumina template with nickel nitrate in the hole in a mixed atmosphere of hydrogen and argon, and perform a reduction reaction at 340°C for 20 minutes; wherein, the heating rate to the reduction reaction temperature is 10°C / min. Then it was placed in a germane-hydrogen-argon mixed atmosphere, and vapor deposition was performed at 340° C. for 20 min; wherein, the germane, hydrogen and argon flow ratio in the germane-hydro...

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Abstract

The invention discloses a method for preparing germanium nanotubes. The method includes the steps of firstly, adopting secondary anodic oxidation process to obtain a thorough-hole alumina template, soaking the through-hole alumina template in nickel nitrate solution to remove nickel nitrate from the surface of the template so as to obtain the thorough-hole alumina template with nickel nitrate deposited in holes; secondly, placing the thorough-hole alumina template with nickel nitrate deposited in the holes into a mixed atmosphere of hydrogen argon to be subjected to reduction reaction at the temperature of from 300 DEG C to 380 DEG C for 10-30 minutes, then placing the thorough-hole alumina template with nickel nitrate deposited in the holes into the mixed atmosphere of germane hydrogen argon to be subjected to vapor deposition at the temperature of from 300 DEG C to 380 DEG C for 10-30 minutes to obtain the alumina template with the germanium nanotubes deposited inside the holes; and finally, placing the alumina template with the germanium nanotubes deposited inside the holes into aqueous alkali to remove the alumna template to obtain the germanium nanotubes composed of nickel diffusing evenly in amorphous germanium which has the ratio of germanium to nickel being (95.05-99.95%):(0.05-4.95%). By the method, possibility is provided to a research of characteristics of light, electricity and the like of the germanium nanotubes and an application thereof. Hopefully, the method for preparing the germanium nanotubes can be widely used in the fields of light, electronic device and the like.

Description

technical field [0001] The invention relates to a preparation method of nanotubes, in particular to a preparation method of germanium nanotubes. Background technique [0002] Germanium is an important semiconductor material. Due to its high carrier mobility, lithium ion diffusion coefficient and near-infrared absorption coefficient, large Bohr radius, low synthesis temperature, and compatibility with silicon, it will have high performance in the future. Optoelectronics, lithium batteries, near-infrared detection, sensing and other fields have attractive application prospects. However, compared with carbon, germanium atoms are more inclined to form sp 3 Therefore, germanium nanowires rather than germanium nanotubes are generally obtained in experiments. Recently, people have made unremitting efforts to obtain germanium nanotubes, see the applicant's researchers Xiangdong Li, Guowen Meng, * Qiaoling Xu, Mingguang Kong, Xiaoguang Zhu, Zhaoqin Chu, and An-Ping Li," Controlled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/26B82Y40/00
Inventor 李祥东孟国文
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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