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An insect sex pheromone microcapsule based on multi-walled carbon nanotubes

A technology of multi-walled carbon nanotubes and pheromones, applied in the field of insect pheromone microcapsules, can solve the problem of lack of insect pheromone attractants, and achieve the effects of improved storage stability, large specific surface area, and low dosage

Active Publication Date: 2018-11-06
INST OF PLANT PROTECTION FAAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the field of agricultural pest control, there are no relevant studies and reports on insect sex pheromone attractants

Method used

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  • An insect sex pheromone microcapsule based on multi-walled carbon nanotubes
  • An insect sex pheromone microcapsule based on multi-walled carbon nanotubes
  • An insect sex pheromone microcapsule based on multi-walled carbon nanotubes

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Experimental program
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Effect test

preparation example Construction

[0029] The preparation method of the insect pheromone microcapsule based on multi-walled carbon nanotubes comprises the following steps:

[0030] 1) Dissolving insect sex pheromone in an organic solvent in proportion to prepare a certain concentration of insect sex pheromone solution;

[0031] 2) Put the carbon nanotubes in a centrifuge tube, slowly add the insect pheromone solution, and mix well to obtain a mixture;

[0032] 3) Put the mixture on a constant temperature shaker, load at 20-25° C. and 100-150 r / min for 12-24 hours, to obtain the microcapsules.

[0033] The slow-release effect of the loaded sample is represented by the active ingredient content of the insect sex pheromone concentration after release, and its calculation formula is:

[0034] Active ingredient content % = insect sex pheromone concentration / theoretical concentration × 100%.

[0035] In order to make the content of the present invention easier to understand, the technical solutions of the present...

Embodiment 1

[0036] Embodiment 1 and comparative experiment A

[0037] ①Example 1: Weigh 10mg of multi-walled carbon nanotubes into a 1.5mL centrifuge tube, add 50μL of Z9E11-14Ac / n-hexane solution with a concentration of 0.2mL / mL, mix well and place it on a constant temperature shaker. Under the conditions of 25° C. and 150 r / min, the load was carried out for 24 hours. After the reaction was complete, an insect pheromone microcapsule loaded with multi-walled carbon nanotubes was obtained.

[0038] ②Comparative experiment A: Weigh 50mg of ordinary activated carbon particles into a 1.5mL centrifuge tube, add 50μL of Z9E11-14Ac / n-hexane solution with a concentration of 0.2mL / mL, mix well, place on a constant temperature shaker, and set the temperature at 25℃ 1. The condition of rotating speed 150r / min was loaded for 24 hours, and after the reaction was complete, an insect sex pheromone microcapsule loaded with ordinary activated carbon particles was obtained.

[0039] ③Comparative gas chrom...

Embodiment 2

[0042] Embodiment 2 and comparative experiment B

[0043] ①Example 2: Weigh 50mg of multi-walled carbon nanotubes into a 1.5mL centrifuge tube, add 50μL of Z9E11-14Ac / ethanol solution with a concentration of 1.0mL / mL, mix well and place on a constant temperature shaker at a temperature of 20 ℃, 100r / min conditions of loading for 12h, after the reaction is complete, an insect pheromone microcapsule supported by multi-walled carbon nanotubes is obtained.

[0044] ②Comparative experiment B: Weigh 70mg of ordinary activated carbon particles into a 1.5mL centrifuge tube, add 50μL of Z9E11-14Ac / n-hexane solution with a concentration of 1.0mL / mL, mix well, place on a constant temperature shaker, and set the temperature at 20℃ 100r / min condition loading for 12h, after the reaction is complete, an insect pheromone microcapsule loaded with ordinary activated carbon particles is obtained.

[0045] ③Comparative gas chromatography to detect the residual amount of microcapsules released

...

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Abstract

The invention discloses an insect sex pheromone micro-capsule based on a multiwalled carbon nanotube. The micro-capsule is composed of a capsule wall and a core material. The multiwalled carbon nanotube is used for making the capsule wall, and the core material comprises insect sex pheromones (Z,E)-9,12-tetradecadienyl acetate or (Z,E)-9,11-tetradecadienyl acetate. The multiwalled carbon nanotube has a special seamless hollow nanoscale coaxial cylinder structure and has a larger specific area and higher loading capacity. The multiwalled carbon nanotube is used for making the capsule wall, the loading capacity of the insect sex pheromones can be larger, slow release of the insect sex pheromones in the micro-capsule can be achieved, the lasting, efficient and stable pest trapping and killing effect is achieved, and storage stability is improved. Meanwhile, the dosage of an organic solvent is small in the preparation process of the micro-capsule, environmental pollution caused in the use process can be avoided, and the micro-capsule is an efficient and environment-friendly material.

Description

technical field [0001] The invention belongs to the technical field of agricultural pest control, and in particular relates to an insect pheromone microcapsule based on multi-walled carbon nanotubes. Background technique [0002] At present, the control of agricultural pests is still dominated by chemical pesticides, but due to the extensive use of chemical pesticides, agricultural pests have generally developed resistance to pesticides. How to effectively control its damage while reducing the environmental pollution of chemical pesticides and the harm to natural enemy insects is an urgent problem to be solved. With the rapid development of insect chemical ecology research, insect sex pheromone control technology has been widely used in the integrated management of pests. Its principle is to release artificially synthesized sex pheromones in the field to trap and kill heterosexual adults, thereby reducing or killing the population of offspring of pests to achieve the purpos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/28A01N37/02A01P19/00
CPCA01N25/28A01N37/02
Inventor 陈艺欣魏辉田厚军林硕陈勇
Owner INST OF PLANT PROTECTION FAAS
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