Preparation of CNTs/S-Cu2O for Electrochemical Detection of Glucose by Monovalent Copper Hydrolysis

A technology of s-cu2o and hydrolysis method, which is applied in the field of CNTs/S-Cu2O composite materials, can solve the problems of difficult control of material particle size, slow response speed and low accuracy, achieve good response speed, improve conductivity, increase The effect of conductivity

Inactive Publication Date: 2019-03-08
UNIV OF JINAN
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The present invention aims to solve the problems of complex methods for preparing cuprous oxide, difficulty in controlling the particle size of materials and poor electrical conductivity, and at the same time solve the problems of slow response speed and low accuracy when cuprous oxide is used for electrochemical detection of glucose , and provide a CNTs / S-Cu prepared by hydrolysis of monovalent copper for electrochemical detection of glucose 2 O Composite Methods

Method used

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  • Preparation of CNTs/S-Cu2O for Electrochemical Detection of Glucose by Monovalent Copper Hydrolysis
  • Preparation of CNTs/S-Cu2O for Electrochemical Detection of Glucose by Monovalent Copper Hydrolysis
  • Preparation of CNTs/S-Cu2O for Electrochemical Detection of Glucose by Monovalent Copper Hydrolysis

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specific Embodiment approach 1

[0017] Specific implementation mode 1: CNTs / S-Cu for the electrochemical detection of glucose prepared by monovalent copper hydrolysis method in this implementation mode 2 OProceed as follows:

[0018] (1) Preparation of acidic monovalent copper solution: a. Weigh respectively according to the quality of catechol is 10~30 mg, the quality of thiourea is 0.2~2.0 g, and the quality of auxiliary complexing agent is 0.1~2.0 g Catechol, thiourea and auxiliary complexing agent; then add 50 mL of deionized water in sequence, stir until dissolved, adjust the pH to 5.0~6.5 with ammonia water or hydrochloric acid to obtain solution A; b. Slowly add 0.01 ~0.5 g of cuprous chloride, stirred until dissolved and aged for 12~36 h to obtain an acidic monovalent cupric solution;

[0019] (2) Preparation of CNTs aqueous solution: c. Add 0.01~0.6 g of CNTs to 50 ml of sulfuric acid + nitric acid mixed solution, stir at room temperature for 1~5 h, then sonicate for 1~3 h, then heat up to 95~120 °...

specific Embodiment approach 2

[0023] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the auxiliary complexing agent described in step (1) a is one of citric acid, malic acid, tartaric acid or lactic acid or a combination of two of them , with a mass of 0.2~1.5 g / L. Others are the same as in the first embodiment.

[0024] When the auxiliary complexing agent of this embodiment is a composition, two auxiliary complexing agents are combined in arbitrary ratios.

specific Embodiment approach 3

[0025] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the volume ratio of sulfuric acid and nitric acid in the sulfuric acid+nitric acid mixed solution described in c of step (2) is 0.3-3.0. Others are the same as in the first or second embodiment.

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Abstract

Preparation of CNTs / S‑Cu for electrochemical detection of glucose by monovalent copper hydrolysis 2 O, the present invention relates to a kind of CNTs / S-Cu that utilizes monovalent copper hydrolysis to prepare for the electrochemical detection of glucose 2 O Composite Methods. The invention aims to solve the problems of poor electrical conductivity and low catalytic activity when cuprous oxide is used for glucose electrochemical detection. Preparation of CNTs / S‑Cu for electrochemical detection of glucose by monovalent copper hydrolysis 2 O: (1) Preparation of acidic monovalent copper solution; (2) Preparation of CNTs aqueous solution; (3) Preparation of CNTs-Cu(Ⅰ) aqueous solution; (4) Preparation of CNTs / S-Cu by hydrolysis 2 O. CNTs / S‑Cu prepared by monovalent copper hydrolysis 2 The O composite material has excellent electrical conductivity and large specific surface area, so it shows a good linear relationship and linear range when used in the electrochemical detection of glucose.

Description

technical field [0001] The invention belongs to the field of glucose electroanalysis, and relates to a CNTs / S-Cu prepared by hydrolysis of monovalent copper for electrochemical detection of glucose 2 O Composite Methods. Background technique [0002] Glucose is an important living substance. The glucose content in human blood is very important to human health. Therefore, the detection of blood sugar content has become an important indicator for monitoring human health. Among the many methods for detecting glucose content in blood, the electrochemical analysis method has the advantages of fast analysis speed and simple equipment. Therefore, the electrochemical detection of glucose has become an important means of analyzing glucose and has many clinical applications. In the electrochemical analysis method of glucose, since the activity of the enzyme sensor will be greatly affected by many factors such as temperature and humidity, the electrochemical detection of glucose with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30
CPCG01N27/308
Inventor 田栋周长利夏方诠乔雪莹陈培培花小霞
Owner UNIV OF JINAN
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