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Silicon dioxide nanowire preparation method

A silicate glass, a technology for removing silicate, applied in the directions of silicon dioxide, silicon oxide, nanotechnology, etc., can solve the problems of increased preparation cost, high corrosion of the solution, cumbersome steps, etc., and achieves good blue light emission characteristics, Simple process and low cost effect

Active Publication Date: 2016-10-26
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can obtain nanowires with controllable size, but the cost is high, and the solution used is highly corrosive and dangerous
Patent CN 105060306 A uses the sol-gel method to drop the mixed solution of ethyl orthosilicate and absolute ethanol into the absolute ethanol added with tellurium nanowires, stir, dry and calcinate to obtain SiO 2 The advantage of nanowire is that it does not require complicated vacuum equipment and corrosive liquid, but this method is based on another kind of nanowire (tellurium nanowire), which makes the method steps too cumbersome and increases the preparation cost

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Embodiment 1

[0024] This embodiment provides a method for preparing SiO from silicate glass 2 The method for nanowires specifically comprises the following steps:

[0025] (1) Pre-treatment: Use 99% acetone and distilled water to clean the glass ultrasonically for 5 minutes each to remove the surface of the glass (the main components are Si: 74%, Na: 16%, Ca: 9%, Al: 1%). Dust and oil.

[0026] (2) Put 10g of pre-treated glass into 100ml of ammonia water for corrosion, the concentration of ammonia water is 1mol / L, the temperature is 180°C, and the corrosion time is 4 h.

[0027] (3) Take out the glass after corrosion, centrifuge the precipitate, pour off the supernatant, wash with distilled water, repeat centrifugation and washing 5 times, and then dry the precipitate at 80°C, the precipitate is SiO 2 Nanowires. figure 1 For the obtained SiO 2 Scanning electron microscope image of the nanowire, from which it can be seen that the prepared SiO 2 The diameter of the nanowire is between 1...

Embodiment 2

[0029] This embodiment provides a method for preparing SiO from silicate glass 2 The method for nanowires specifically comprises the following steps:

[0030] (1) Pretreatment: Use 99% acetone and distilled water to clean the glass ultrasonically for 5 minutes each to remove the surface of the glass (mainly composed of Si: 76%, Na: 16%, Ca: 7%, Al: 1%). Dust and oil.

[0031] (2) Put 15g of pre-treated glass into 100ml of ammonia water for corrosion, the concentration of ammonia water is 1.25 mol / L, the temperature is 160°C, and the corrosion time is 7 h.

[0032] (3) Take out the glass after corrosion, centrifuge the precipitate, pour off the supernatant, wash with distilled water, repeat centrifugation and washing 5 times, and then dry the precipitate at 80°C, the precipitate is SiO 2 Nanowires. image 3 For the obtained SiO 2 Scanning electron microscope image of the nanowire, from which it can be seen that the prepared SiO 2 The diameter of the nanowires is between 20...

Embodiment 3

[0034] This embodiment provides a method for preparing SiO from silicate glass 2 The method for nanowires specifically comprises the following steps:

[0035] (1) Pretreatment: Use 99% acetone and distilled water to clean the glass ultrasonically for 5 minutes each to remove the surface of the glass (mainly composed of Si: 75%, Na: 16%, Ca: 7%, Al: 2%). Dust and oil.

[0036] (2) Put 20g of pre-treated glass into 100ml of ammonia water for corrosion, the concentration of ammonia water is 1.5mol / L, the temperature is 170°C, and the corrosion time is 12 h;

[0037] (3) Take out the glass after corrosion, centrifuge the precipitate, pour off the supernatant and wash with distilled water, repeat centrifugation and washing 5 times, and then dry the precipitate at 80°C, the precipitate is SiO 2 Nanowires. Figure 5 For the obtained SiO 2 Scanning electron microscope image of the nanowire, from which it can be seen that the prepared SiO 2 The diameter of the nanowires is between...

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Abstract

The invention belongs to the field of nano material preparation and discloses a silicon dioxide nanowire preparation method. Common silicate glass is adopted as raw materials to prepare SiO2 nanowires according to an ammonium hydroxide hydrothermal method. The SiO2 nanowire preparation method is low in raw material cost and simple in manufacturing process, overcomes the defect of complexity, inconvenience or high risk of a traditional method and is conducive to large-scale production.

Description

technical field [0001] The present invention relates to a SiO 2 The invention discloses a method for preparing nanowires, belonging to the field of nanomaterial preparation. Background technique [0002] Nanowires exhibit different mechanical and conductive properties from bulk or three-dimensional objects due to their macroscopic quantum tunneling effects, quantum size effects, and nonlinear optical effects. SiO 2 Nanowires and bulk SiO 2 Compared with the excellent and stable blue light emission characteristics, it has a wide range of potential applications in the fields of fluorescent materials and near-field scanning optical microscopy, which has attracted special attention from the academic community. And, SiO 2 Nanowires have good self-filming properties, transparency, superior chemical and physical resistance, corrosion resistance, and anti-aging properties to ultraviolet light, so that they can be used in fabrics and coatings. Existing SiO 2 The preparation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12B82Y40/00
CPCC01B33/12C01P2004/64C01P2006/60C01P2002/80C01P2004/03C01P2004/16
Inventor 朱艳贺胤黎振华张际帆沈韬
Owner KUNMING UNIV OF SCI & TECH
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