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A kind of blue light-emitting silicon oxide nanomaterial and its preparation method

A technology of nanomaterials and silicon oxide, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of harsh preparation conditions, complicated steps, and few reports on the optical properties of silicon oxide nanomaterials, and achieve strong blue light emission characteristics, methods Simple, easily sized effects

Inactive Publication Date: 2019-01-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These preparation conditions are relatively harsh, and the steps are complicated; at the same time, the optical properties of silicon oxide nanomaterials prepared by the above methods are rarely reported.

Method used

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  • A kind of blue light-emitting silicon oxide nanomaterial and its preparation method
  • A kind of blue light-emitting silicon oxide nanomaterial and its preparation method
  • A kind of blue light-emitting silicon oxide nanomaterial and its preparation method

Examples

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Embodiment 1

[0025] Example 1. On Si / SiO 2 The preparation of silicon oxide nanomaterials includes the following basic steps:

[0026] (1) on Si / SiO 2 Ti films with a thickness of 5nm were prepared on the surface to form Si / SiO 2 / Ti structure;

[0027] (2) Si / SiO 2 / Ti is placed in the reaction chamber, and the reaction chamber is evacuated;

[0028] (3) Inject H into the reaction chamber 2 S gas, processing Si / SiO at 450°C 2 / Ti for about 20 minutes, and then lower the temperature to obtain silicon oxide nanomaterials. The scanning electron microscope image of the as-prepared silicon oxide nanobelts is shown in figure 1 (a) and transmission electron microscopy image 3 (a) shown.

Embodiment 2

[0029] Example 2. On Si / SiO 2 Preparation of silica nanomaterials on:

[0030] Similar to the steps in Example 1, the metal Ti film can be replaced with other metals, such as Cr, Cu, Mo, Ru, Pt, Ni, Pd, Au, Al or Fe, and the thickness of the metal film is in the range of 0.5nm to 50nm Silicon oxide nanomaterials can be obtained both internally and at a treatment temperature of 450°C to 1030°C. like figure 1 (b) is for Si / SiO 2 / Cr (25nm) was subjected to a heat treatment at 950°C for 40 minutes to obtain a scanning electron microscope image of a silicon oxide nanomaterial.

Embodiment 3

[0031] Embodiment 3. prepare silicon oxide nanomaterial on glass, comprise the following basic steps:

[0032] (1) preparing an Au film with a thickness of 10 nm on the glass to form a glass / Au structure;

[0033] (2) Place the glass / Au in the reaction chamber and evacuate the reaction chamber;

[0034] (3) Inject H into the reaction chamber 2 S gas, treat S glass / Au at 700°C for about 80 minutes, and then lower the temperature to obtain silicon oxide nanomaterials. The scanning electron microscope image of the as-prepared silicon oxide nanobelts is shown in figure 1 (c) and transmission electron microscopy image 3 (b) shown.

[0035] Similarly, the metal Au film can be replaced with other metals, such as Ti, Cr, Cu, Mo, Ru, Pt, Ni, Pd, Al or Fe, the thickness of the metal film is in the range of 0.5nm to 50nm, and the treatment temperature is 450 ℃ ~ 1030 ℃ can be obtained silicon oxide nanomaterials.

[0036] Similarly, glass can be replaced with quartz. The scanning...

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Abstract

The invention discloses a preparation method of a silicon oxide nanometer material emitting blue light. The preparation method comprises the steps that firstly, a thin metal layer with the thickness of 0.5 nm-50 nm is prepared on the surface of silicon oxide serving as a raw material; secondly, heat treatment is performed on the silicon oxide provided with the thin metal layer in a depositing mode in the sulfur atmosphere at the temperature of 450 DEG C-1030 DEG C; lastly, the temperature is lowered, and the silicon oxide nanometer material is obtained. Accordingly, the method for preparing the silicon oxide nanometer material is simple, the raw material precursor sources are rich, nontoxic and harmless, and no bad influence to the environment exits in the preparation process.

Description

technical field [0001] The invention relates to silicon oxide nanomaterials, in particular to a blue light-emitting silicon oxide nanomaterial and a preparation method thereof. Background technique [0002] Silicon oxide is not only the basis of silicon-based semiconductor devices, silicon oxide nanomaterials have important application value in photovoltaic devices, dye-catalyzed degradation, and biomedicine. Nanomaterials possess numerous properties that bulk materials do not. At present, the method for preparing silicon oxide nanomaterials mainly includes thermally evaporating silicon monoxide (SiO) at high temperature for a long time without a metal catalyst. For example, using this method to prepare silicon oxide nanowires at 1300 ° C for 4 hours [Nanotechnology 17( 2006) 3215–3218]; including the preparation of silicon oxide nanotubes by solution chemical reaction film plate method [J.Mater.Chem.A,2(2014)7819.], etc. These preparation conditions are relatively harsh a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/67C09K11/68C09K11/59C09K11/87C09K11/60C09K11/64
CPCC09K11/592C09K11/607C09K11/646C09K11/678C09K11/687C09K11/873
Inventor 徐明生汪胜平谢爽黄国伟
Owner ZHEJIANG UNIV
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