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Ni/Au composite nanowire array enzyme-free glucose sensor electrode and preparation method thereof

A glucose sensor and nanowire array technology, applied in the field of electrochemistry, can solve the problems of poor sensitivity, slow reaction kinetics and poor selectivity of non-enzyme glucose sensor, and achieve the effects of improving sensitivity, short response time and good linearity.

Active Publication Date: 2020-08-07
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Problems solved by technology

However, compared with enzyme catalysts, enzyme-free catalysts have slower reaction kinetics and poor selectivity for glucose oxidation, resulting in poor sensitivity and relatively poor performance of enzyme-free glucose sensors, which restrict the application of enzyme-free glucose sensors. the main problem

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  • Ni/Au composite nanowire array enzyme-free glucose sensor electrode and preparation method thereof
  • Ni/Au composite nanowire array enzyme-free glucose sensor electrode and preparation method thereof
  • Ni/Au composite nanowire array enzyme-free glucose sensor electrode and preparation method thereof

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Embodiment Construction

[0053] In the following, the present invention will be described in more detail through specific embodiments, so as to facilitate the understanding of the technical solution of the present invention, but it is not used to limit the protection scope of the present invention.

[0054] The invention provides a method for preparing a Ni / Au composite nanowire array enzyme-free glucose sensor electrode, comprising the following steps:

[0055] (1) Preparation of Ni / Au composite nanowire arrays:

[0056] ①Conductive treatment of the anodized aluminum template: use the method of magnetron sputtering Au layer to conduct conductive treatment on one side of the anodized aluminum template, and use the method of magnetron sputtering on the anodized aluminum template to sputter a layer with a thickness of 100nm The gold layer acts as a conductive layer;

[0057] ② Use conductive silver paste (Ted Pella, Inc.) to connect the conductively treated side of the anodized aluminum template to the...

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Abstract

The invention provides a Ni / Au composite nanowire array enzyme-free glucose sensor electrode and a preparation method thereof. The preparation method comprises the following steps: carrying out conductive treatment on an anodic aluminum oxide template; carrying out the Au deposition in an anodic aluminum oxide conductive template, and then carrying out the Ni deposition; removing the anodic aluminum oxide conductive template deposited with Au and Ni to obtain a Ni / Au composite nanowire array; adhering one end of the Ni / Au composite nanowire array to the modified electrode, and carrying out potential ring scanning until a cyclic voltammogram is stable, thereby obtaining the enzyme-free glucose sensor electrode. According to the enzyme-free glucose sensor electrode, noble metal elements andnon-noble metal elements with different electronegativity are constructed into a double-layer nanowire structure by adopting an electro-deposition method, so the electrode current is obviously improved, the sensitivity of an enzyme-free glucose sensor is improved, and the problem of restricting the application limitation of the enzyme-free glucose sensor is solved.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry. Specifically relates to a Ni / Au composite nanowire array enzyme-free glucose sensor electrode and a preparation method thereof. Background technique [0002] The rapid and sensitive detection of glucose content has very important applications in the fields of clinical medical testing, food safety analysis, and biological fermentation control, among which the detection of glucose content in blood is the most important. Abnormal levels of glucose in the blood can lead to many serious diseases, the most common of which is diabetes. According to the data of the International Diabetes Federation (IDF), in 2015, there were 415 million diabetic patients in the world, almost 1 in every 11 people with diabetes. If diabetes is not effectively controlled, it can lead to stroke, coronary Heart disease, blindness, kidney failure, uremia, lower limb necrosis and many other complications seriously th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327
CPCG01N27/3278G01N27/3277
Inventor 王玫周晓斌刘芳孟二超巩飞龙李峰
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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