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Method for preparing up-conversion residual pesticide degradation liquid

A technology of pesticide residues and degrading agents, applied in the field of pesticide residue degradation aqueous solution and its preparation

Inactive Publication Date: 2016-05-25
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A large number of studies have shown that although nanoscale powdered TiO2 has a large surface area and high photocatalytic activity, it needs to be exposed to ultraviolet light to exert its maximum photocatalytic activity, so it is necessary to solve the problem of ease of operation in the process of pesticide residue degradation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 10mlH 2 O, 1mlHCl, 150mlC 2 h 5 OH was added to the beaker, and under vigorous stirring, 3g of upconversion agent Y was added at the same time 2 o 3 :Yb 3+ , after ultrasonic dispersion for 2 hours, 10 ml of a mixed solution containing tetrabutyl titanate and ethanol was added dropwise. After continuing to stir, the mixture was transferred to a hydrothermal reaction kettle, and hydrothermally reacted at a reaction temperature of 80°C at a heating rate of 4°C / min. After reacting for 2 hours, the final product was obtained after adjusting the pH to 7.

Embodiment 2

[0013] 20mkH 2 O, 2mlHCl, 300mlC 2 h 5 OH was added to the beaker, and under vigorous stirring, 5g of upconversion agent Y was added at the same time 2 o 3 :Yb 3+ After ultrasonic dispersion for 3 hours, 20 ml of a mixed solution containing tetrabutyl titanate and ethanol was added dropwise. After continuing to stir, the mixture was transferred to a hydrothermal reaction kettle, and hydrothermally reacted at a reaction temperature of 70°C at a heating rate of 3°C / min. After reacting for 2.5 hours, the final product was obtained after adjusting the pH to 7.

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PUM

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Abstract

The invention relates to a method for preparing up-conversion residual pesticide degradation liquid, and concretely relates to the up-conversion residual pesticide degradation liquid with convenient operation and the preparation method thereof. The method can obtain the nano-level TiO2 and an up-conversion agent Y2O3:Yb<3+> mixed aqueous solution system having the advantages of good crystal form stability, uniform particle size distribution, and good crystal growth through a hydrothermal method, the degradation liquid is loaded and bottled, and can be directly sprinkled under visible light.

Description

technical field [0001] The invention relates to a preparation method of a nanoscale photocatalyst, in particular to an easy-to-operate pesticide residue degradation aqueous solution and a preparation method thereof. Background technique [0002] Crops are the main source of food for humans, and the technology of spraying pesticides on crops to implement pest control is the main measure to ensure agricultural production. However, the extensive use and abuse of pesticides has a wide range of hazards, and they stay in the atmosphere, soil and water for a long time, endangering human health and safety, and will destroy the ecological balance. Therefore, their decomposition and removal have attracted much attention. With the improvement of people's living standards and the demand for international trade after China's entry into WTO, the standards for pesticide residues in food are becoming more and more stringent. [0003] Usually, people all can clean or soak the vegetables mel...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J21/06C09K11/78
Inventor 刘志平范海陆李辰
Owner WUYI UNIV