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Preparation method and application of deoxycholic-acid-modified silver nanoparticle solution

A technology of deoxycholic acid and silver nanoparticles is applied in the direction of analysis by chemical reaction of materials, material analysis by observing the influence on chemical indicators, measurement devices, etc. problem, to achieve the effect of uniform particles, easy operation and stable process conditions

Active Publication Date: 2016-05-04
杭州天时亿科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the detection methods of dihydrogen phosphate ion mainly include ultra-high performance liquid chromatography, ion chromatography, inductively coupled plasma mass spectrometry, fluorescence spectroscopy and electrochemical methods. Processing is time-consuming and labor-intensive, and most of the required instruments are expensive, requiring professional and technical personnel to operate and maintain, and the cost is high
Therefore, it is greatly restricted in the application of on-site detection.

Method used

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  • Preparation method and application of deoxycholic-acid-modified silver nanoparticle solution

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Embodiment 1

[0039] The invention provides a kind of preparation method of the silver nanoparticle solution modified by deoxycholic acid, comprising the following steps:

[0040] Step 1, adding deoxycholic acid into 50% ethanol aqueous solution to form a concentration of 10 -3mol / L deoxycholic acid solution;

[0041] Step two, the AgNO 3 Add the water of 90 parts by weight to form a concentration of 5×10 -5 mol / L AgNO 3 aqueous solution;

[0042] Step 3, to the AgNO prepared in step 2 under stirring 3 Adding the NaBH of 0.005 parts by weight in the aqueous solution 4 , continue stirring for 1 min, then add 4.5 parts by weight of the deoxycholic acid solution prepared in step 1, and continue stirring for 0.5 h to obtain a deoxycholic acid-modified silver nanoparticle solution.

[0043] Among them, AgNO 3 Aqueous solution and NaBH 4 The reaction equation is as follows:

[0044] 2AgNO 3 +4NaBH 4 +6H 2 O→2Ag+2NaNO 3 +2HBO 3 +7H 2

[0045] The present invention adopts the sodium...

Embodiment 2

[0060] The invention provides a kind of preparation method of the silver nanoparticle solution modified by deoxycholic acid, comprising the following steps:

[0061] Step 1, adding deoxycholic acid into 50% ethanol aqueous solution to form a concentration of 10 -3 mol / L deoxycholic acid solution;

[0062] Step two, the AgNO 3 Add the water of 90 parts by weight to form a concentration of 5×10 -3 mol / L AgNO 3 aqueous solution;

[0063] Step 3, to the AgNO prepared in step 2 under stirring 3 Adding the NaBH of 0.012 parts by weight in the aqueous solution 4 , continue stirring for 5 minutes, then add 9 parts by weight of the deoxycholic acid solution prepared in step 1, and continue stirring for 5 hours to obtain a deoxycholic acid-modified silver nanoparticle solution.

[0064] Among them, AgNO 3 Aqueous solution and NaBH 4 The reaction equation is as follows:

[0065] 2AgNO 3 +4NaBH 4 +6H 2 O→2Ag+2NaNO 3 +2HBO 3 +7H 2

[0066] The present invention adopts the s...

Embodiment 3

[0081] The invention provides a kind of preparation method of the silver nanoparticle solution modified by deoxycholic acid, comprising the following steps:

[0082] Step 1, adding deoxycholic acid into 50% ethanol aqueous solution to form a concentration of 10 -3 mol / L deoxycholic acid solution;

[0083] Step two, the AgNO 3 Add the water of 90 parts by weight to form a concentration of 2.52×10 -3 mol / L AgNO 3 aqueous solution;

[0084] Step 3, to the AgNO prepared in step 2 under stirring 3 Adding the NaBH of 0.008 parts by weight in the aqueous solution 4 , continue stirring for 3 minutes, then add 6.8 parts by weight of the deoxycholic acid solution prepared in step 1, and continue stirring for 0.5-5 hours to obtain a deoxycholic acid-modified silver nanoparticle solution.

[0085] Among them, AgNO 3 Aqueous solution and NaBH 4 The reaction equation is as follows:

[0086] 2AgNO 3 +4NaBH 4 +6H 2 O→2Ag+2NaNO 3 +2HBO 3 +7H 2

[0087] The present invention ado...

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Abstract

The invention discloses a preparation method and application of a deoxycholic-acid-modified silver nanoparticle solution. The preparation method of the deoxycholic-acid-modified silver nanoparticle solution comprises the following steps: step 1, preparing a deoxycholic acid solution; step 2, adding AgNO3 into 90 parts by weight of water to form an AgNO3 aqueous solution with a concentration of 5*10<-5>-5*10<-3> mol / L; and step 3, adding 0.005-0.012 part by weight of NaBH4 into the AgNO3 aqueous solution while performing stirring, performing continuous stirring for 1-5 min, adding 4.5-9 parts by weight of the deoxycholic acid solution, and performing continuous stirring for 0.5-5 h to obtain the deoxycholic-acid-modified silver nanoparticle solution. The prepared deoxycholic-acid-modified silver nanoparticle solution has good monodispersion, uniform particles, stable properties, and excellent optical performance.

Description

technical field [0001] The invention relates to a preparation method and application of a silver nanoparticle solution. More specifically, the present invention relates to a preparation method and application of a deoxycholic acid-modified silver nanoparticle solution. Background technique [0002] As one of the phosphate anions, dihydrogen phosphate can form salts with metal ions such as sodium and potassium. For example, sodium dihydrogen phosphate, solid, is easily soluble in water, insoluble in organic solvents, and absorbs moisture in the air. It is often used in boiler water treatment, acidity buffer, detergent, baking powder, mica flake bonding, dye auxiliaries, tanning, electroplating, etc. It is also used in sodium dihydrogen phosphate, sodium acid pyrophosphate and hexameta in food Raw material of sodium phosphate. In addition, sodium dihydrogen phosphate can also be used as a buffer, emulsifier, nutrient, etc. in food and beverages. There is another phosphate:...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78G01N2021/775
Inventor 展军颜
Owner 杭州天时亿科技有限公司
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