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Preparation and application of nano copper hydroxide controlled release system

A copper hydroxide, nano technology, applied in the preparation and application of nano copper hydroxide sustained release system, can solve the problems of high production cost, difficult to control particle size, environmental pollution, etc., and achieve the effect of reducing harm

Inactive Publication Date: 2016-07-06
周子杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: high production cost, high equipment requirements, difficult to control the particle size, especially easy to cause environmental pollution during the synthesis process (such as ammonia will be released as a complexing agent)

Method used

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  • Preparation and application of nano copper hydroxide controlled release system
  • Preparation and application of nano copper hydroxide controlled release system
  • Preparation and application of nano copper hydroxide controlled release system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0024] Present embodiment is the preparation of glycerol copper solution, and its chemical reaction equation is as follows:

[0025] .

[0026] Add equimolar glycerol to the 0.5mol / L copper sulfate solution, mix well, then add 2mol / L potassium hydroxide solution under stirring until the pH value of the reaction solution is 13.30 to obtain a uniform and stable blue-black glycerin copper solution .

[0027] This example is the preparation of modified glycerol copper solution.

[0028] Add 3wt% sodium dodecylbenzenesulfonate (SDBS) to the copper glycerol solution prepared in Example 1, and stir evenly to obtain the modified copper glycerol solution.

Embodiment 3

[0030] The difference between Example 3 and Example 4 and Example 2 lies in the amount of sodium dodecylbenzenesulfonate (SDBS), see Table 1 for details.

Embodiment 1

[0032] The difference between Example 1 and Example 2 and Example 2 lies in the amount of sodium dodecylbenzenesulfonate (SDBS), see Table 1 for details.

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Abstract

The invention discloses preparation and an application of a nano copper hydroxide controlled release system. The preparation of the nano copper hydroxide controlled release system comprises preparation of a copper-glycerin solution and dilution of the copper-glycerin solution, wherein the pH value of the copper-glycerin solution is 13.30-13.40. The copper-glycerin solution is prepared and water is added into the copper-glycerin solution to dilute and slowly release nano copper hydroxide; and compared with a traditional coordinate precipitation method, the preparation has the advantages of relatively low requirements on equipment, relatively low production cost, easiness of controlling granularity, environmental friendliness, simplicity and easiness of operation. The copper-glycerin solution is modified by adopting SDBS (Sodium Dodecyl Benzene Sulfonate) so that the nano copper hydroxide can be slowly released in relatively short time without stirring after the dilution, and furthermore, the solution can be directly applied to plants and is used for preventing and treating plant diseases.

Description

technical field [0001] The invention belongs to the technical field of copper-based fungicides, and in particular relates to the preparation and application of a nanometer copper hydroxide slow-release system. Background technique [0002] Copper-based fungicide is one of the longest-used and most promising fungicides. Its advantages are: no pollution, no residue, no resistance, and it can kill common fungi and bacteria at the same time. As the most commonly used copper-based fungicide, Bordeaux mixture has the advantages of good efficacy, low cost, and is not easy to produce drug resistance. However, it also has cumbersome preparation procedures, poor suspension, easy to cause phytotoxicity if used improperly, and heavy metal pollution in soil due to long-term use. shortcoming. [0003] Nano-copper hydroxide material has surface effect and small size effect, and the specific surface area increases sharply, which makes it have higher surface activity and contact killing, an...

Claims

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Application Information

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IPC IPC(8): A01N25/18A01N59/20A01P1/00C01G3/02B82Y40/00
CPCA01N25/18A01N59/20B82Y40/00C01G3/02A01N2300/00
Inventor 周子杰
Owner 周子杰
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