Preparation method of chicken protein protection gold-copper nano-cluster and application of chicken protein protection gold-copper nano-cluster in mercury ion detection

A technology of egg white and nanoclusters, applied in metal processing equipment, material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of complex sample pretreatment, time-consuming, high detection cost, etc., achieve unique photophysical properties, and the method is fast and simple , good detection sensitivity

Pending Publication Date: 2022-07-01
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional detection method for mercury ions has limitations such as complicated sample pretreatment, high detection cost, and long time consumption. Therefore, it is urgent to develop a fast and efficient method to accurately detect mercury ions in samples.

Method used

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  • Preparation method of chicken protein protection gold-copper nano-cluster and application of chicken protein protection gold-copper nano-cluster in mercury ion detection
  • Preparation method of chicken protein protection gold-copper nano-cluster and application of chicken protein protection gold-copper nano-cluster in mercury ion detection
  • Preparation method of chicken protein protection gold-copper nano-cluster and application of chicken protein protection gold-copper nano-cluster in mercury ion detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Weigh 5 mg of egg whites, add 100 μL of water to dissolve; add 100 μL of chloroauric acid and mix evenly, then add 12.5 μL of copper sulfate solution, mix and stir for 2 minutes; in the second step, add 22 μL of 1M hydroxide The sodium solution was added to the above solution and mixed uniformly to adjust the pH of the solution to 13, and heated in a water bath at 50° C. for 10 hours to obtain chicken egg white-gold copper nanoclusters.

Embodiment 2

[0037] Example 2: Weigh 5 mg of egg whites, add 100 μL of water to dissolve; add 100 μL of chloroauric acid and mix evenly, then add 25 μL of copper sulfate solution, mix and stir for 2 minutes; in the second step, add 22 μL of 1M sodium hydroxide The solution was added to the above solution and mixed evenly to adjust the pH of the solution to 13, and heated in a water bath at 50° C. for 10 hours to obtain chicken egg white-gold-copper nano-clusters.

Embodiment 3

[0038] Example 3: Weigh 5 mg of egg whites, add 100 μL of water to dissolve; add 100 μL of chloroauric acid and mix evenly, then add 50 μL of copper sulfate solution, mix and stir for 2 minutes; in the second step, add 22 μL of sodium hydroxide with a concentration of 1M The solution was added to the above solution and mixed evenly to adjust the pH of the solution to 13, and heated in a water bath at 50° C. for 10 hours to obtain chicken egg white-gold-copper nano-clusters.

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Abstract

The invention relates to the technical field of gold-copper nano-cluster synthesis, in particular to a preparation method of a chicken protein protection gold-copper nano-cluster and application of the chicken protein protection gold-copper nano-cluster in mercury ion detection.The preparation method comprises the following specific steps that S1, a certain amount of egg white is weighed, 100 microliters of water is added for dissolution, chloroauric acid is added for even mixing, then a copper sulfate solution is added, even mixing and stirring are conducted for 2 minutes, and a solution A is obtained; s2, adding 1M of a sodium hydroxide solution into the solution A obtained in the step S1, adjusting the pH value of the solution to 9-13, and heating the solution in a water bath for 3-10 hours to obtain a solution B; and S3, the solution B obtained in the step 2 is stored under the condition of 4 DEG C, and the egg white-gold copper nano-cluster is obtained. The egg white-gold copper nano-cluster is prepared in an aqueous solution by adopting a one-step synthesis method, and the egg white-gold copper nano-cluster has unique photophysical characteristics, and is simple to prepare, low in toxicity and good in stability; the mercury ion detection is rapid and simple, the detection sensitivity is high, the detection limit is low, and the fluorescent nano material is an ideal fluorescent nano material applied to the biological and medical fields.

Description

technical field [0001] The invention relates to the technical field of synthesis of gold-copper nano-clusters, in particular to a preparation method of chicken egg white-protected gold-copper nano-clusters and its application in mercury ion detection. Background technique [0002] Chicken egg white is a high-viscosity solution rich in protein and a small amount of acetic acid and lysozyme. It contains more than forty kinds of proteins, such as ovalbumin, ovotransferrin, ovomucin, ovomucoid, and conalbumin, etc. It has the functions of moistening the lungs and pharynx, clearing away heat and detoxifying, and enhancing skin immunity. Ovalbumin contains enough amino acid residues, among which cysteine ​​and histidine residues can be used as protective agents for metal ions, and tyrosine residues can be used as reducing agents to reduce precious metal ions under alkaline conditions. In addition, chicken protein is an ideal candidate for the synthesis of metal nanoclusters due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64B22F9/24B22F1/054B22F1/10
CPCG01N21/643G01N21/64B22F9/24G01N2021/6421
Inventor 付丁伊王佳茜曹蕾周梦艳
Owner NANTONG UNIVERSITY
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