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A preparation method and application of a hydrogen peroxide sensor based on the combination of two electrochemical methods

A hydrogen peroxide, electrochemical technology, applied in the direction of electrochemical variables of materials, analysis by chemical reaction of materials, chemiluminescence/bioluminescence, etc., can solve problems such as limiting wide application and affecting convenience of operation, Achieve the effect of high selective detection, convenient operation and broad market application value

Inactive Publication Date: 2018-04-13
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, because electrochemiluminescence sensors require external light signal capture devices such as photodiodes, while photoelectrochemical sensors require external light sources to excite photosensitive materials, this affects the convenience of both operations to a certain extent and limits They are more widely used in actual production and life

Method used

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  • A preparation method and application of a hydrogen peroxide sensor based on the combination of two electrochemical methods

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Embodiment 1

[0034] Example 1 A hydrogen peroxide sensor based on the combination of two electrochemical methods

[0035] A method for preparing a hydrogen peroxide sensor based on the combination of two electrochemical methods, the specific preparation steps are:

[0036] (1) Cadmium-doped molybdenum disulfide two-dimensional nanomaterial Cd-MoS2 Solution preparation:

[0037] The cadmium-doped molybdenum disulfide two-dimensional nanomaterial Cd-MoS 2 The solution is Cd-MoS 2 aqueous solution, the Cd-MoS 2 It is a molybdenum disulfide two-dimensional nanomaterial doped with cadmium ions. The two-dimensional nanomaterial is in the form of a paper sheet with a thickness of about 10-20 nm. The Cd-MoS 2 The preparation method is: 0.005 g cadmium chloride CdCl 2 , 2 mL of 0.1 mol / L ascorbic acid solution, 0.5 mL of sodium molybdate Na 2 MoO 4 solution and 0.01 g sodium sulfide Na 2 S, after mixing and stirring for 15 minutes, put it into the reaction kettle, and react for 16 hours at 1...

Embodiment 2

[0055] Example 2 A hydrogen peroxide sensor based on the combination of two electrochemical methods

[0056] A method for preparing a hydrogen peroxide sensor based on the combination of two electrochemical methods, the specific preparation steps are:

[0057] (1) Cd-MoS 2 Solution preparation:

[0058] The preparation steps are the same as that of Cd-MoS in Example 1 2 The method of preparation of the solution differs in: CdCl 2 The addition amount of ascorbic acid solution is 0.008 g, the addition amount of ascorbic acid solution is 4 mL, Na 2 MoO 4 The amount of solution added was 1.0 mL and Na 2 The amount of S added was 0.02 g, and the reaction was carried out at 220° C. for 12 hours.

[0059] (2) Preparation of electrochemiluminescent working electrode W1:

[0060] The preparation steps are the same as those of W1 in Example 1, except that the Cd-MoS prepared in (1) in this example is used 2 Modified electrodes; the concentration of luminol in the electrolyte was...

Embodiment 3

[0068] Example 3 A hydrogen peroxide sensor based on the combination of two electrochemical methods

[0069] A method for preparing a hydrogen peroxide sensor based on the combination of two electrochemical methods, the specific preparation steps are:

[0070] (1) Cd-MoS 2 Solution preparation:

[0071] The preparation steps are the same as that of Cd-MoS in Example 1 2 The method of preparation of the solution differs in: CdCl 2 The addition amount of ascorbic acid solution is 0.01 g, the addition amount of ascorbic acid solution is 6 mL, Na 2 MoO 4 The amount of solution added was 1.5 mL and Na 2 The amount of S added was 0.03 g, and the reaction was carried out at 220° C. for 12 hours.

[0072] (2) Preparation of electrochemiluminescent working electrode W1:

[0073] The preparation steps are the same as those of W1 in Example 1, except that the Cd-MoS prepared in (1) in this example is used 2 Modified electrodes; the concentration of luminol in the electrolyte was ...

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Abstract

The invention discloses a preparation method of a dual-functional hydrogen peroxide sensor based on functional nanomaterials combined with two electrochemical methods. The prepared sensor is simple to operate, convenient to carry, fast to detect, and low in cost, and can be used in daily production Rapid and sensitive detection of hydrogen peroxide in fields such as , life and so on.

Description

technical field [0001] The invention relates to a preparation method of a sensor for detecting hydrogen peroxide, and belongs to the technical field of novel nano functional materials and electrochemical biosensing analysis. Background technique [0002] Hydrogen peroxide is an oxidizing agent, which can be decomposed into water and oxygen under normal circumstances, but it is relatively slow. When a catalyst (or biological enzyme) is added, the reaction speed is accelerated, so that the amount of hydrogen peroxide or the catalyst (or The amount of biological enzymes), and hydrogen peroxide often exists in the form of reaction intermediates in organisms. Therefore, hydrogen peroxide plays an important role in the fields of medical diagnosis, clinical treatment, environmental testing and food production. Research The development of hydrogen peroxide detection method also has very important application value. Due to the advantages of simple operation and fast detection speed,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N21/76
CPCG01N21/76G01N27/30
Inventor 张勇胡丽华刘媛媛李燕魏琴
Owner UNIV OF JINAN
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