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Preparation method for nano-selenium

A technology of nano selenium and selenite, which is applied in the field of preparation of nano materials, can solve the problems of lack of water solubility and biocompatibility, complicated preparation process, large size of nano selenium, etc., and achieves good water solubility and biocompatibility, The effect of uniform particle size and uniform particle size

Inactive Publication Date: 2015-07-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Summarizing the above preparation methods, we can easily find that the vast majority of preparation processes, the whole system is relatively complicated, the preparation process is cumbersome, the conditions are various and difficult to grasp, and the energy consumption is large, and the prepared nano-selenium has a large size, no water solubility and biological properties. Compatibility

Method used

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  • Preparation method for nano-selenium
  • Preparation method for nano-selenium
  • Preparation method for nano-selenium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take by weighing the sodium selenite crystal of 0.0233g, join in the mixed solution of 2ml deionized water, 18ml glycerol and 2ml ethanol, stir and make it fully dissolve, obtain sodium selenite solution; Take by weighing 1.0076g glucose powder in addition, make It was dissolved in 2ml deionized water;

[0020] Add the prepared glucose solution to the prepared sodium selenite solution at 60°C, then add 1ml of MPA, stir and heat to 80°C, and keep it warm for 15 minutes to obtain a brick-red nano-selenium solution. Centrifuge at rpm for 30 minutes to obtain water-soluble and biocompatible nano-selenium powder.

[0021] as attached figure 1 As shown, in the X-ray diffraction pattern diagram of the generated nano-selenium powder, it can be determined that the powder is a pure-phase nano-selenium crystal powder with a hexagonal structure. Among them, when the diffraction angle is 23.5°, 29.7°, 41.4°, 43.6°, 45.4°, 51.7° and 56.0°, the corresponding (1 0 0), (0 1 1), (1 1 ...

Embodiment 2

[0025] Take by weighing the sodium selenite crystal of 0.4156g, join in the mixed solution of 2ml deionized water, 20ml glycerol and 2ml ethanol, stir and make it fully dissolve, obtain sodium selenite solution; Take by weighing 2.5046g glucose powder in addition, make It was dissolved in 3ml deionized water;

[0026] Add the prepared glucose solution to the prepared sodium selenite solution at 60°C, then add 1ml of MPA, stir and heat to 80°C, and keep it warm for 15 minutes to obtain a brick-red nano-selenium solution. Centrifuge at rpm for 30 minutes to obtain water-soluble and biocompatible nano-selenium powder.

Embodiment 3

[0028] Weigh 0.0254g of sodium selenite crystal, add it to the mixed solution of 2ml deionized water, 2g polyethylene glycol and 2ml ethanol, stir to make it fully dissolved, and obtain sodium selenite solution; in addition, weigh 2.5046g glucose powder , so that it was dissolved in 3ml deionized water;

[0029] Add the prepared glucose solution to the prepared sodium selenite solution at 60°C, then add 1ml of MPA, stir and heat to 80°C, and keep it warm for 15 minutes to obtain a brick-red nano-selenium solution. Centrifuge at rpm for 30 minutes to obtain water-soluble and biocompatible nano-selenium powder.

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Abstract

The invention relates to a preparation method for nano-selenium. The preparation method comprises the following steps: 1) weighing a selenite crystal, adding into a mixed liquid of deionized water, a stabilizing agent A and a stabilizing agent B, dissolving to obtain a selenite solution; weighing a reducing agent powder, dissolving in deionized water to obtain a reducing agent solution; 2)adding the prepared reducing agent solution into the prepared selenite solution, then adding a stabilizing agent C, stirring and heating, keeping warm to obtain a brick-red nano-selenium solution; and 3) centrifuging the prepared nano-selenium solution to obtain the nano-selenium powder. The preparation method has the advantages of normal-pressure preparation conditions, lower reaction temperature (60-80 DEG C), short reaction time, whole safe and stable preparation process, easy controllability, low cost of the raw materials, no toxicity and no harm; and the product prepared by the preparation method has uniform product particle size, smaller particles (2-6 nm), good crystallization perpformance, good water-solubility and biocompatibility.

Description

technical field [0001] The invention relates to the preparation of nano materials, in particular to a preparation method of nano selenium. technical background [0002] Selenium belongs to group VIA and is a metalloid element. Early research on selenium was mainly focused on its properties and uses. For example, the thin layer of gray selenium is widely used in photovoltaic cells, rectifiers, copying technology, etc., because it has excellent photoelectric properties and unidirectional conductivity; selenium is also widely used in the manufacture of railway and navigation mark lights, as well as coatings and ceramics industries. Because it has good red light transmission. Selenium is also an essential trace element for the human body. Selenium deficiency can cause a variety of diseases, and an appropriate amount of selenium supplementation can effectively prevent and treat a variety of diseases. And single crystal selenium is an important elemental semiconductor, which has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/02B82Y40/00
Inventor 谭国龙姜沣芮
Owner WUHAN UNIV OF TECH
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