Method for preparing silver nanoparticles with sugarcane extract

A technology of sugarcane extract and silver nanoparticles, which is applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve the problems of environmental pollution and complex process, and achieve the effects of environmental friendliness, simple preparation process and simple equipment

Active Publication Date: 2016-04-13
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the invention provides a kind of method utilizing sugarcane extract to prepare silver nanoparticles, and the described method of utilizing sugarcane

Method used

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  • Method for preparing silver nanoparticles with sugarcane extract
  • Method for preparing silver nanoparticles with sugarcane extract
  • Method for preparing silver nanoparticles with sugarcane extract

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Wash the glass container with aqua regia, and then rinse it once with pure water.

[0036] (2), get 15ml sugarcane extract and put into flask, then add 15ml deionized water and 200ml sodium hydroxide (1mol / L) successively, heat to boiling, boil for 5 minutes, test pH value is 8.68.

[0037] (3), add 5ml of silver nitrate solution (0.01mol / L) in the flask, react under boiling conditions for 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes and then take samples. sample photo as figure 1 .

[0038] (4), figure 2 It is a TEM picture of characterizing the silver nanometers obtained by the above-mentioned reaction for 10 minutes using a JEM-2100F field emission transmission electron microscope of JEOL Ltd. It can be clearly seen that the obtained silver nanoparticles present a spherical shape. The morphology of the samples prepared in the remaining 20 minutes, 30 minutes, 40 minutes, and 50 minutes is similar to that of the silver nanometers obtained in 10 ...

Embodiment 2

[0042] (1) Wash the glass container with aqua regia, and then rinse it once with pure water.

[0043](2), get 15ml sugarcane extract and put into flask, then add 15ml deionized water and 400ml sodium hydroxide (1mol / L) successively, heat to boiling, boil for 5 minutes, test pH value is 9.95.

[0044] (3), add 5ml of silver nitrate solution (0.01mol / L) in the flask, react under boiling conditions for 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes and then take samples. sample photo as Figure 5 .

[0045] (4), Figure 6 It is a TEM picture of characterizing the silver nanometers obtained by the above-mentioned reaction for 10 minutes using a JEM-2100F field emission transmission electron microscope of JEOL Ltd. It can be clearly seen that the obtained silver nanoparticles present a spherical shape. The morphology of the samples prepared in the remaining 20 minutes, 30 minutes, 40 minutes, and 50 minutes is similar to that of the silver nanometers obtained in 10 ...

Embodiment 3

[0049] (1) Wash the glass container with aqua regia, and then rinse it once with pure water.

[0050] (2), get 15ml sugarcane extract and put into flask, then add 3ml deionized water and 400ml sodium hydroxide (1mol / L) successively, heat to boiling, boil for 5 minutes, test pH value is 10.14.

[0051] (3), add 3ml silver nitrate solution (0.01mol / L) in the flask, react under boiling condition for 10 minutes, 20 minutes, 30 minutes, 40 minutes, after 50 minutes, take samples. sample photo as Figure 9 .

[0052] (4), Figure 10 The results of characterization of the silver nanometers obtained by the above reaction for 10 minutes were carried out by JEM-2100F field emission transmission electron microscope of JEOL Ltd. It can be clearly seen that the obtained silver nanoparticles present a spherical shape. The morphology of the samples prepared in the remaining 20 minutes, 30 minutes, 40 minutes, and 50 minutes is similar to that of silver nanometers in 10 minutes, and the a...

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Abstract

The invention discloses a method of preparing silver nanoparticles with a sugarcane extract. The method comprises the following steps: preparing the sugarcane extract; dissolving silver nitrate crystals into deionized water to prepare a silver nitrate solution with the concentration to be 0.005-0.02 mol/L; and adding an alkaline solution in the sugarcane extract, keeping a pH value of a reaction system to range from 8.5-10.5, then heating to boiling, adding the silver nitrate solution with the concentration to be 0.005-0.02 mol/L in the boiling state, reacting for 10-50 minutes, carrying out centrifugal separation on an obtained reaction solution after reaction is finished, and drying obtained precipitates to obtain the silver nanoparticles. The preparation method is simple, is easy to operate and cannot cause pollution to environment. The prepared silver nanoparticles are uniform, are good in dispersibility, do not have toxic chemical reagent residues on the surfaces, express obvious optical signals and can be widely applied to the field of biological medicines.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation, and in particular relates to a method for preparing silver nanoparticles by using sugarcane extract. Background technique [0002] Due to their unique optical, electrical, and chemical properties, silver nanoparticles have shown broad application prospects in the fields of biomedicine, aerospace, and new energy. Especially in biomedicine, silver nanocolloid is famous for its strong bactericidal effect on dozens of pathogenic microorganisms such as Candida albicans, Pseudomonas aeruginosa, and Bacillus subtilis. In recent years, researchers have discovered that there is a strong surface plasmon resonance phenomenon on the surface of silver nanoparticles, and organisms can be labeled by using its unique resonance frequency. This discovery quickly promoted people's research enthusiasm for silver nanometers. The surface plasmon resonance frequency generated by silver nanopart...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
CPCB82Y40/00B22F9/24B22F1/054
Inventor 孙丽尹跃超魏中徐波苏文献章立新
Owner UNIV OF SHANGHAI FOR SCI & TECH
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