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Method for manufacturing gold-solver alloy nanometer particles through sugarcane extract

A sugarcane extract and nanoparticle technology, applied in the direction of nanotechnology, can solve the problems of high preparation cost, poor dispersion of gold-silver alloy nanoparticles, environmental pollution, etc., and achieve low preparation cost, short preparation time and simple process Effect

Inactive Publication Date: 2015-02-25
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method of using sugarcane to solve the above-mentioned technical problems such as environmental pollution, high preparation cost, and poor dispersion of the obtained gold-silver alloy nanoparticles in the process of using other plant extracts to prepare gold-silver alloy nanoparticles. Method for preparing gold-silver alloy nanoparticles from extract

Method used

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  • Method for manufacturing gold-solver alloy nanometer particles through sugarcane extract
  • Method for manufacturing gold-solver alloy nanometer particles through sugarcane extract
  • Method for manufacturing gold-solver alloy nanometer particles through sugarcane extract

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Embodiment 1

[0031] A method utilizing sugarcane extract to prepare gold-silver alloy nanoparticles, specifically comprising the steps of:

[0032] (1) Peel the sugarcane, squeeze the juice, filter, and centrifuge the obtained filtrate at a controlled speed of 8000rpm for 10min, and the obtained supernatant is the sugarcane extract;

[0033] (2), put 25 1 chloroauric acid aqueous solution and 5ml silver nitrate aqueous solution are mixed, with the rotating speed magnetic stirring of 200rpm 2min obtain mixed solution, the mol ratio of gold ion and silver ion in the mixed solution is 1:20;

[0034] The concentration of the chloroauric acid aqueous solution is 0.1M;

[0035] The concentration of the silver nitrate aqueous solution is 0.01M;

[0036] (3) Heat 3 parts of 25ml sugarcane extract to boiling within 10 minutes, respectively add 3 parts of the mixture obtained in step (2) into 3 parts of boiling sugarcane extract, keep boiling, and react for 10 minutes and 20 minutes respectively ...

Embodiment 2

[0043] A method utilizing sugarcane extract to prepare gold-silver alloy nanoparticles, specifically comprising the steps of:

[0044] (1) Peel the sugarcane, squeeze the juice, filter, and centrifuge the obtained filtrate at a controlled speed of 8000rpm for 10min, and the obtained supernatant is the sugarcane extract;

[0045] (2), put 25 1 chloroauric acid aqueous solution and 2.5ml silver nitrate aqueous solution are mixed, with the rotating speed magnetic stirring of 200rpm 2min obtains mixed solution, the mol ratio of gold ion and silver ion in the mixed solution is 1:10;

[0046] The concentration of the chloroauric acid aqueous solution is 0.1M;

[0047] The concentration of the silver nitrate aqueous solution is 0.01M;

[0048] (3) Heat 3 parts of 25ml sugarcane extract to boiling within 10 minutes, respectively add 3 parts of the mixture obtained in step (2) into 3 parts of boiling sugarcane extract, keep boiling, and react for 10 minutes and 20 minutes respective...

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Abstract

The invention discloses a method for manufacturing gold-solver alloy nanometer particles through sugarcane extract. The method includes the steps of firstly, peeling and squeezing sugarcane, and conducting filtering and centrifuging to obtain supernate, namely, the sugarcane extract; secondly, mixing a chloroauric acid solution with a silver nitrate solution to obtain a mixture, wherein the mole ratio of gold ions to silver ions in the mixture is 1:10-20; thirdly, heating the sugarcane extract till the sugarcane extract boils, adding the mixture to the boiled sugarcane extract, keeping the boiling state for 10 minutes to 30 minutes, conducting centrifuging for 10 minutes by controlling the rotating speed of reaction liquid at 8000 rpm after reaction ends, and drying sediment for 10 minutes at temperature of 40 DEG C to 50 DEG C to obtain the gold-silver alloy nanometer particles. The method is simple in process, moderate in condition, low in cost and free of any environment pollution in the manufacturing process. The obtained gold-silver alloy nanometer particles are high in dispersibility and uniform and have remarkable plasma resonance signals.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing gold-silver alloy nanoparticles by using sugarcane extract. Background technique [0002] Due to the good biocompatibility and strong synergistic effect of gold and silver elements, gold-silver alloy nanoparticles have shown excellent performance in both optics and catalysis. First of all, in terms of optics, gold-silver alloy nanoparticles are used in biomedical fields such as medical imaging, biomarkers and cancer hyperthermia due to their surface plasmon resonance properties, which have epoch-making significance for the development of medical and health care. Secondly, in terms of catalysis, gold-silver alloy nanoparticles exhibit high low-temperature catalytic activity for carbon monoxide, and its activity is significantly better than that of single-metal gold nanoparticles and single-metal silver nanoparticles. In the proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 孙丽章立新苏文献魏中刘婧楠张超刘峰
Owner UNIV OF SHANGHAI FOR SCI & TECH
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