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Preparation of self-catalyze degradation pesticide

A self-catalyzing and degrading pesticide technology, which is applied in botany equipment and methods, animal repellants, biocides, etc., to achieve the effect of fast drug effect, low cost and fast action speed

Inactive Publication Date: 2007-01-17
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After literature search, it was found that "Nano TiO2" published by Xu Yuehua et al. 2 Research on Photocatalytic Degradation of Organophosphorus Pesticides" (Soil and Environment 2001, 10(3): 173-175), which reported the use of nano-photosensitive materials to treat pesticides or pesticide wastewater, and has achieved certain research results, but has not yet been used. Related reports on the development of pesticide preparation products based on the principle of photocatalytic degradation of organic matter by nanomaterials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

experiment example 2

[0018] Experimental example 2.A. Add 20.4g of 98% chlorfenapyr technical and 1g of anatase TiO with an average particle size of 15nm in a 250ml three-neck flask with stirring. 2 , 5g sodium lauryl sulfate, 15g castor oil polyoxyethylene ether (n=20), 200g ethanol, start stirring for about 40 minutes to obtain 241.4g of transparent or translucent mother liquor.

[0019] B. Slowly add 58.6g of bentonite with an average particle size of 10 μm to the above mother liquor, finish adding in about 30 minutes, continue to stir for 30 minutes, remove the solvent from the resulting mixture, and dry to obtain a chlorfenapyr functionalized preparation with a content of 20%. Its average particle size is about 10 μm. According to the dose of 10g / mu mixed with 60 kg of water and evenly sprayed on cabbage, the control effect on diamondback moth was 100%, and the residual amount of chlorfenapyr in cabbage could not be detected after 5 days.

experiment example 3

[0020] Experimental example 3.A. Add 5.2g of 96% fipronil original drug and 1g of anatase TiO with an average particle size of 5nm in a 250ml three-neck flask with stirring 2 , 2g of pulling powder, 4g of nonylphenol polyoxyethylene ether (n=15), 100g of ethanol, started stirring for about 40 minutes to obtain 112.2g of transparent or translucent mother liquor.

[0021] B. Slowly add 87.8 g of pottery clay with an average particle size of 20 μm to the above mother liquor, finish adding in about 30 minutes, continue stirring for 30 minutes, remove the solvent from the resulting mixture, and dry to obtain a functionalized preparation of 5% fipronil. Its average particle size is about 20 μm. According to the dose of 30g / mu mixed with 80 kg of water and evenly sprayed on the beans, the control effect on the beans was 98%, and the residual amount of fipronil could not be detected after 7 days.

experiment example 4

[0022] Experimental example 4.A. Add 10.4g of 96% fipronil original drug and 1g of anatase TiO with an average particle size of 5nm in a 250ml three-neck flask with stirring 2 , 8g of pulling powder, 12g of nonylphenol polyoxyethylene ether (n=15), 200g of ethanol, started stirring for about 40 minutes to obtain 231.4g of transparent or translucent mother liquor.

[0023] B. Slowly add 68.6g of pottery clay with an average particle size of 20 μm to the above mother liquor, finish adding in about 30 minutes, continue to stir for 30 minutes, remove the solvent from the resulting mixture, and dry to obtain a functionalized preparation of 10% fipronil. Its average particle size is about 20 μm. According to the dose of 15g / mu mixed with 80 kg of water and evenly sprayed on the beans, the control effect on the beans was 96%, and the residual amount of fipronil could not be detected after 7 days.

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PUM

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Abstract

The invention discloses a process for preparing an autocatalysis degradable pesticide in environment, which comprises the steps of, mixing octahedrite type titanium dioxide nano powders, pesticides and surface active agent, dissolving them in solvent, stirring homogeneously to obtain mother liquor, the mass percent of octahedrite type titanium dioxide nano powders, surface active agent, pesticides and solvent is 1:5-20:5-40:50-200, adsorbing the mother liquor homogeneously onto the inert support, and removing dissolvent through vacuum drying.

Description

technical field [0001] The invention relates to a preparation method of pesticides, in particular to a preparation method capable of self-catalyzing and degrading pesticides in the environment. It belongs to the field of chemical engineering. technical background [0002] Pesticides play an important role in the entire agricultural production, especially in modern agricultural production. Improving the scientific and technological content of pesticide preparations and using chemical pesticides safely, rationally and effectively are prerequisites for ensuring high agricultural yields. Usually, the effective utilization rate of pesticides sprayed on the crop surface is less than 10%, and most of the pesticides are wasted in the environment, causing environmental pollution. Many agricultural products do not meet the standards of the Food and Agriculture Organization of the United Nations and the World Health Organization, causing direct harm to people's lives and health. At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/00A01N25/32
Inventor 曹永松陆贻通
Owner SHANGHAI JIAOTONG UNIV
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