A kind of high specific surface sucrose silkworm sand composite carbon material and its preparation method and application

A technology of high specific surface area and composite carbon, which is applied in botany equipment and methods, applications, animal husbandry, etc., can solve the problems of non-target biological damage environment, excessive pesticide residues in agricultural products, and low efficiency of pesticide utilization, etc., and achieve the goal of reducing solvents Effects of consumption, reduction of waste liquid discharge, and improvement of efficiency

Active Publication Date: 2019-09-20
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only a small amount of pesticides can reach the crop target site in a specific time, and most of the pesticides are directly released into the natural environment, resulting in low pesticide utilization efficiency
These ineffective pesticides will cause many negative problems such as excessive pesticide residues in agricultural products, damage to non-target organisms, and environmental pollution.

Method used

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  • A kind of high specific surface sucrose silkworm sand composite carbon material and its preparation method and application
  • A kind of high specific surface sucrose silkworm sand composite carbon material and its preparation method and application
  • A kind of high specific surface sucrose silkworm sand composite carbon material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of a high specific surface sucrose silkworm excrement composite material, comprising the following steps,

[0031] (1) in N 2 In the atmosphere, 10.0 g of raw silkworm excrement was raised to 500°C at a heating rate of 5°C / min, kept at 500°C for more than 5.0 hours, and then cooled to room temperature to prepare carbonized silkworm excrement.

[0032] (2) Put 0.25g of sucrose powder and 0.25g of carbonized silkworm excrement into a ball mill jar, add 1.0mL of ZnCl with a mass concentration of 0.25g / L 2 solution; the ball mill jar is sealed and placed in a high-speed mechanical oscillating ball mill to oscillate, the rotating speed is 1000 rpm, and the grafting reaction time is 60min (normal pressure sealing is carried out in the reaction process); the obtained sucrose / ZnCl 2 / Silkworm excrement composite slurry is directly dried at 80°C to obtain crude composite material;

[0033] (3) the obtained composite material crude product in step (2) in N ...

Embodiment 2

[0035] (1) in N 2 In the atmosphere, 10.0 g of raw silkworm excrement was raised to 600°C at a heating rate of 5°C / min, kept at 600°C for more than 4.0 hours, and then cooled to room temperature to prepare carbonized silkworm excrement.

[0036] (2) Put 0.25g of sucrose powder and 0.5g of carbonized silkworm excrement into a ball mill jar, add 3.0mL of ZnCl with a mass concentration of 0.30g / L 2 solution alcohol; the ball mill jar is sealed and placed in a high-speed mechanical oscillating ball mill to oscillate, the rotating speed is 1050 rpm, and the grafting reaction time is 50min (normal pressure sealing is carried out in the reaction process); the obtained sucrose / ZnCl 2 / Silkworm excrement composite slurry was directly dried at 80°C to obtain crude composite material.

[0037] (3) the obtained composite material crude product in step (2) in N 2 In the atmosphere, the temperature was raised to 550°C at a rate of 5°C / min, and kept at 550°C for 4.0 hours. After the natura...

Embodiment 3

[0039] (1) in N 2 In the atmosphere, 10.0 g of raw silkworm excrement was raised to 700°C at a heating rate of 5°C / min, kept at 700°C for more than 3.0 hours, and then cooled to room temperature to prepare carbonized silkworm excrement.

[0040] (2) 0.25g of sucrose powder and 0.75g of carbonized silkworm excrement were placed in a ball mill jar, and 5.5mL of ZnCl with a mass concentration of 0.25g / L was added 2 solution; the ball mill jar is sealed and placed in a high-speed mechanical oscillating ball mill to oscillate, the rotating speed is 1100 rpm, and the grafting reaction time is 45min (normal pressure sealing is carried out in the reaction process); the obtained sucrose / ZnCl 2 / Silkworm excrement composite slurry was directly dried at 90°C to obtain crude composite material.

[0041] (3) the obtained composite material crude product in step (2) in N 2 In the atmosphere, the temperature was raised to 600°C at a rate of 5°C / min, and kept at 600°C for 3.0 hours. After c...

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Abstract

The invention discloses a high specific surface area saccharose and silkworm excrements composite carbon material as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing carbonized silkworm excrements from original silkworm excrements under protective gas; mixing saccharose powder with the carbonized silkworm excrements, adding into a ZnCl2 solution and putting into a high speed mechanical ball mill for vibration activation grafting reaction to obtain saccharose / ZnCl2 silkworm excrement slurry, and drying the slurry directly to obtain a composite material crude product; and mixing the composite material crude product with ZnCl2, performing activated reaming reaction under the protective gas, and then performing cleaning, centrifuging and drying to obtain the high surface area saccharose silkworm excrement composite carbon material. The material is applied to the aspect of slow and controlled release of pesticides. According to the high specific surface area saccharose and silkworm excrements composite carbon material, by the use of high speed mechanical vibration for grafting compounding of the saccharose and the silkworm excrements and mixing and initial activation of a ZnCl2 activator, the grafting compounding speed of the two materials and the dispersity of the activator on the surface of the silkworm excrements composite material are substantially improved. The obtained composite carbon material is relatively high in specific surface area and contains O-polar group, and contributes to relatively high adsorption capacity and better controlled-release effect to the pesticides.

Description

technical field [0001] The invention belongs to the technical field of composite carbon materials, and in particular relates to a sucrose silkworm excrement composite material and a preparation method and application thereof. Background technique [0002] Pesticides can effectively control the harm of diseases, insects, weeds and other harmful organisms to crops. As an important means of chemical control, pesticides play an irreplaceable role in agricultural production. However, only a small amount of pesticides can reach the crop target site in a specific time, and most of the pesticides are directly released into the natural environment, resulting in low pesticide utilization efficiency. These ineffective pesticides will cause many negative problems such as excessive pesticide residues in agricultural products, damage to non-target organisms, and environmental pollution. How to effectively improve the utilization efficiency and targeted release function of pesticides is o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/08A01N51/00
Inventor 赵钟兴王欣辉陶萌良赵祯霞
Owner GUANGXI UNIV
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