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Method for using grapefruit juice to restore silver ions in silver nitrate solution

A grapefruit and silver nitrate technology, applied in the field of silver ions, can solve the problems of large capital investment, low output, high energy consumption, etc., and achieve the effect of simple operation, simple steps, and non-toxic raw materials

Inactive Publication Date: 2014-04-09
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The earliest method of preparing nano-silver is the physical method. The purity of nano-silver prepared by this method is high, but the output is low, the capital investment is large, and the energy consumption is large.

Method used

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  • Method for using grapefruit juice to restore silver ions in silver nitrate solution
  • Method for using grapefruit juice to restore silver ions in silver nitrate solution
  • Method for using grapefruit juice to restore silver ions in silver nitrate solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1 Experimental reagents and instruments

[0026] Reagents: silver nitrate, absolute ethanol, elemental iodine, potassium iodide, all of the above are of analytical grade; secondary distilled water; the fruit grapefruit used in the experiment was purchased from a local fruit store;

[0027] Instrument: American Nicolet870 Fourier transform infrared spectrometer, solid KBr tablet (scanning range: 4000~400cm -1 , scan 32 times, resolution 4cm -1 );

[0028] TU-1901 double-beam UV-Vis spectrophotometer, Beijing General Instrument Co., Ltd. (scanning range: 190~800nm, sampling interval: 1nm, spectral bandwidth: 2nm, scanning speed: medium speed, scanning times: once, photometric mode :Abs);

[0029] TD6 desktop multi-tube automatic balancing centrifuge, Changsha Pingfan Instrument Co., Ltd. (accelerating voltage is 80kV);

[0030] MAP18XAHF X-ray diffractometer, Dandong Ray Instrument Industry Co., Ltd. (test voltage is 40kV, current is 100mA, scanning speed is 4° / min, c...

Embodiment 2

[0057] A kind of described method utilizing grapefruit juice to reduce the silver ion in the silver nitrate solution comprises the following steps:

[0058] (1) Take fresh grapefruit, peel it, take 30g of grapefruit fruit and add 60g of distilled water to press, then filter the juice with a Buchner funnel, and centrifuge at a low speed in a centrifuge to obtain a supernatant, which is now Squeeze the grapefruit juice, put it all in a beaker and keep it sealed for later use;

[0059] (2) In a constant temperature water bath at 30°C, mix 20mL of freshly squeezed grapefruit juice with 20mL of 0.01-0.1mol / L silver nitrate solution, and then react in a 50mL small beaker, and place the above reaction solution for 48 hours Finally, separate the precipitate with a high-speed centrifuge, wash the precipitate with absolute ethanol, and centrifuge through a high-speed centrifuge to obtain the product.

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Abstract

The invention discloses a method for using grapefruit juice to restore silver ions in silver nitrate solution. The method includes: well mixing about 20mL of freshly squeezed grapefruit juice with about 20mL of 0.01-0.1mol / L silver nitrate solution under the constant-temperature water bath at about 30 DEG C, allowing the two to react in a 50mL small beaker, standing the reaction liquid for 48 hours, using a high-speed centrifuge to separate sedimentation, washing the sedimentation with anhydrous ethanol, and centrifuging the washed sedimentation with the high-speed centrifuge to obtain the products.

Description

technical field [0001] The invention belongs to the field of nano-silver particle manufacture, and in particular relates to a method for reducing silver ions in a silver nitrate solution by using grapefruit juice. Background technique [0002] With the rapid development of nano-materials, the application of nano-materials is becoming more and more extensive, such as in nano-coatings, nano-carbon tubes, nano-semiconductors, catalytic materials, as well as in medicine, home appliances, textiles, and environmental protection. In recent years, the research on nano-silver has achieved fruitful results. No matter in terms of preparation, properties, or applications, nano-silver is undoubtedly one of the most extensively researched materials. In addition to the characteristics of general nanomaterials, nano-silver materials have a significant surface plasmon resonance effect in optical materials. This effect can enhance the electromagnetic field inside and around the nano-silver p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 陈龙胡长玉孙金余杨奇
Owner HUANGSHAN UNIV
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