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Method for green synthesis of nano copper oxide by using galangal extracting solution

A nano-copper oxide, green synthesis technology, applied in copper oxide/copper hydroxide and other directions, can solve the problems of toxicity of reducing agents and stabilizers, high requirements for instruments and equipment, environmental pollution, etc. The effect of secondary pollution and simple synthesis process

Pending Publication Date: 2022-04-19
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, traditional physical synthesis and chemical synthesis are mainly used in the synthesis of nanomaterials. However, the physical synthesis method has high requirements for the equipment required for the reaction, while the reducing agent and stabilizer used in the chemical synthesis method are toxic and easy to cause environmental pollution. , and cause biological toxicity

Method used

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  • Method for green synthesis of nano copper oxide by using galangal extracting solution
  • Method for green synthesis of nano copper oxide by using galangal extracting solution
  • Method for green synthesis of nano copper oxide by using galangal extracting solution

Examples

Experimental program
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Effect test

Embodiment 1

[0051] (1) Weigh 10g of dried galangal powder and place it in a beaker, add 100g of deionized water, take it out after heating and stirring at 80°C for 45min, vacuum filter through a 0.45μm microporous membrane to obtain the galangal extract, place Store at 4°C for later use.

[0052] (2) Weigh copper sulfate pentahydrate powder, add deionized water and stir to dissolve to obtain a copper sulfate solution with a concentration of 0.01 g / mL.

[0053] (3) the galangal extract prepared by the step (1) is mixed with the copper sulfate solution prepared by the step (2) according to a volume ratio of 1:1, and the hydrochloric acid solution is added dropwise to adjust the pH value to 4, The mixture was stirred at 60° C. for 3 h to obtain a nano-copper suspension.

[0054] (4) The nano-copper suspension prepared in the step (3) was centrifuged at 7000g for 10min, and the obtained nano-copper particles were alternately washed three times with deionized water and absolute ethanol, dried...

Embodiment 2

[0059] (1) Weigh 10g of dried galangal powder and place it in a beaker, add 100g of deionized water, take it out after heating and stirring at 80°C for 45min, vacuum filter through a 0.45μm microporous membrane to obtain the galangal extract, place Store at 4°C for later use.

[0060] (2) Weigh copper sulfate pentahydrate powder, add deionized water and stir to dissolve to obtain a copper sulfate solution with a concentration of 0.01 g / mL.

[0061] (3) the galanga extract prepared by the step (1) is mixed with the copper sulfate solution prepared by the step (2) according to a volume ratio of 1:2, and the hydrochloric acid solution is added dropwise to adjust the pH value to 4, The mixture was stirred at 60° C. for 3 h to obtain a nano-copper suspension.

[0062] (4) The nano-copper suspension prepared in the step (3) was centrifuged at 7000g for 10min, and the obtained nano-copper particles were alternately washed three times with deionized water and absolute ethanol, dried ...

Embodiment 3

[0067] (1) Weigh 10g of dried galangal powder and place it in a beaker, add 100g of deionized water, take it out after heating and stirring at 80°C for 45min, vacuum filter through a 0.45μm microporous membrane to obtain the galangal extract, place Store at 4°C for later use.

[0068] (2) Weigh copper sulfate pentahydrate powder, add deionized water and stir to dissolve to obtain a copper sulfate solution with a concentration of 0.01 g / mL.

[0069] (3) the galanga extract prepared by the step (1) is mixed with the copper sulfate solution prepared by the step (2) according to a volume ratio of 1:3, and the hydrochloric acid solution is added dropwise to adjust the pH value to 4, The mixture was stirred at 60° C. for 3 h to obtain a nano-copper suspension.

[0070] (4) The nano-copper suspension prepared in the step (3) was centrifuged at 7000g for 10min, and the obtained nano-copper particles were alternately washed three times with deionized water and absolute ethanol, dried ...

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Abstract

The invention relates to the technical field of preparation of metal oxide nano materials, in particular to a method for green synthesis of nano copper oxide by using a galangal extracting solution, which comprises the following steps: mixing galangal with a solvent, heating and filtering to obtain the galangal extracting solution; the galangal extracting solution and the precursor solution containing copper ions are mixed, a mixed solution is obtained after the pH value is adjusted, the mixed solution reacts under heating and stirring, and a nano-copper suspension is obtained; and centrifuging the nano-copper suspension, and washing, drying, calcining and grinding the obtained nano-copper particles to obtain the nano-copper oxide. The method has the advantages of greenness, environmental protection, simple process, low cost and high yield.

Description

technical field [0001] The invention relates to the technical field of metal oxide nanomaterial preparation, in particular to a method for green synthesis of nanometer copper oxide by using galangal extract. Background technique [0002] The decline in crop yield and quality caused by diseases is the main reason affecting the development of my country's agriculture. Plant disease control has become an important task in my country's agricultural production. Anthracnose is the most common and most harmful fungal disease in mango production, causing postharvest losses of 30-60%, and even 100% in severe cases. Metal nanomaterials have special properties, such as huge specific surface area, high activity, good optical properties and electrical conductivity, etc., and are widely used in biomedicine, solar power generation, catalysis and antibacterial research and other industries. Nanomaterials have a higher specific surface area and smaller size, so they are more likely to be in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02
CPCC01G3/02C01P2002/72C01P2002/84C01P2002/82C01P2004/03C01P2002/80C01P2004/62
Inventor 任艳芳胡春梅何俊瑜朱雯佳鲁莹
Owner CHANGZHOU UNIV
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