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Method for preparing diameter different monocrystal bismuth nanowire microarray by using uniform hole diameter alumina template

A kind of alumina template and bismuth nanotechnology, which is applied in chemical instruments and methods, single crystal growth, nanotechnology, etc., can solve the problems of difficulty in obtaining templates, difficulty in assembling high-quality nanowires, and difficulty in realizing bismuth nanowires

Inactive Publication Date: 2009-01-21
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this process has disadvantages. First, the diameter of the prepared nanowires is fixed, and its diameter depends on the pore size of the alumina porous membrane, that is, it is different from the nanoscale microstructure of the alumina porous membrane. The pore size is the same; secondly, theoretical research shows that with the decrease of nanowire diameter, the thermoelectric properties of bismuth will be significantly improved, and because the preparation technology of small-aperture alumina template is not yet perfect, the template is extremely difficult to obtain, so that It is difficult to prepare small-diameter bismuth nanowires; thirdly, even if small-diameter alumina templates are readily available, as the diameter of the alumina template hole decreases, the assembly of high-quality nanowires becomes increasingly difficult

Method used

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  • Method for preparing diameter different monocrystal bismuth nanowire microarray by using uniform hole diameter alumina template
  • Method for preparing diameter different monocrystal bismuth nanowire microarray by using uniform hole diameter alumina template
  • Method for preparing diameter different monocrystal bismuth nanowire microarray by using uniform hole diameter alumina template

Examples

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Embodiment 1

[0013] Example 1: First, one side of the prepared aluminum oxide ordered mesoporous double-pass template with a pore diameter of 98nm is sprayed with a gold foil with a thickness of 30nm by vacuum evaporation; Bismuth, tartaric acid, glycerol and sodium chloride are prepared in the pH value of 0.9 electrodeposition solution, wherein, bismuth trichloride is 5g / l, tartaric acid is 60g / l, glycerol is 85g / l, sodium chloride is 60g / l, the order of preparation of the electrodeposition solution is as follows: first mix sodium chloride and glycerin, then add tartaric acid and mix, finally add bismuth trichloride and mix; finally, use the gold foil on the template as the cathode , the graphite sheet in the electrodeposition solution is the anode, and a pulse delay voltage of 0 volts and a pulse deposition voltage of -1.1 volts are applied time-sharingly between the cathode and the anode, wherein the time of the pulse delay voltage is 60 ms, and the time of the pulse deposition voltage ...

Embodiment 2

[0014] Example 2: First, one side of the prepared aluminum oxide ordered mesoporous double-pass template with a pore diameter of 98nm is sprayed with a gold foil with a thickness of 30nm by vacuum evaporation; Bismuth, tartaric acid, glycerin and sodium chloride are prepared in the pH value of 1 electrodeposition solution, wherein, bismuth trichloride is 8g / l, tartaric acid is 55g / l, glycerin is 90g / l, sodium chloride is 55g / l, the order of preparation of the electrodeposition solution is as follows: first mix sodium chloride and glycerin, then add tartaric acid and mix, finally add bismuth trichloride and mix; finally, use the gold foil on the template as the cathode , the graphite sheet in the electrodeposition solution is the anode, and a pulse delay voltage of 0 volts and a pulse deposition voltage of -1.2 volts are applied time-sharingly between the cathode and the anode, wherein the time of the pulse delay voltage is 55 ms, and the time of the pulse deposition voltage fo...

Embodiment 3

[0015] Example 3: First, one side of the prepared aluminum oxide ordered mesoporous double-pass template with a pore diameter of 98nm is sprayed with a gold foil with a thickness of 30nm by vacuum evaporation; Bismuth, tartaric acid, glycerin and sodium chloride are prepared in the pH value of 1.1 electrodeposition solution, wherein, bismuth trichloride is 10g / l, tartaric acid is 50g / l, glycerin is 95g / l, sodium chloride is 50g / l, the order of preparation of the electrodeposition solution is as follows: first mix sodium chloride and glycerin, then add tartaric acid and mix, finally add bismuth trichloride and mix; finally, use the gold foil on the template as the cathode , the graphite sheet in the electrodeposition solution is an anode, and a pulse delay voltage of 0 volts and a pulse deposition voltage of -1.4 volts are applied time-sharingly between the cathode and the anode, wherein the time of the pulse delay voltage is 50 ms, and the time of the pulse deposition voltage ...

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Abstract

The method of using alumina template with single pore diameter to prepare nanometer filament array of monocrystal bismuth and in different diameters is one pulse electric deposition method. The electric deposition solution is compounded with bismuth trichloride in 5-15 g / L, tartaric acid in 40-60 g / L, glycerin in 85-105 g / L and sodium chloride in 40-60 g / L, and has pH value 0.9-1.3. The pulse voltage consists of pulse delay voltage of 0 V and pulse deposition voltage of -1.1~-1.8 V, When the pulse delay voltage has time of 40-60 ms, the pulse deposition voltage has time of 10-45 ms; and the pulse deposition voltage has time of 10-20 ms, the pulse delay voltage has time of 10-50 ms. The alumina template has pore diameter of 5 nm.

Description

technical field [0001] The invention relates to a method for preparing single-crystal bismuth nanowire microarrays, in particular to a method for preparing single-crystal bismuth nanowire microarrays with different diameters by using an alumina template with a single aperture. Background technique [0002] In today's society, the requirements for the performance of various components are getting higher and higher, which prompts people to continuously explore ways to break through the size limit of devices. Whether quasi-one-dimensional nanomaterials are used as new optical, electrical, or magnetic devices, such as scanning probes The tip of microscope STM, photonic cable, quantum chip, etc., or the connection between device nodes, all have extremely broad application prospects. Bismuth is a typical semi-metal material, which has the characteristics of highly anisotropic Fermi surface, very small electronic effective mass, large carrier mean free path and semi-metal-semicondu...

Claims

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Application Information

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IPC IPC(8): C25D1/00C25D5/02C30B29/62C25D5/18C25D1/10B82B3/00
Inventor 李亮张勇李广海张立德
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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