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Preparation method of a glucose sensor with noble metal doped zinc oxide nanorods

A glucose sensor and zinc oxide nanorod technology, which is applied in the field of electrochemical analysis, can solve the problems of lack of glucose sensor preparation methods, etc., and achieve the effect of improving electron transfer rate, large specific surface area and high sensitivity

Active Publication Date: 2017-03-08
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there is a lack of a method for the preparation of a glucose sensor with high sensitivity and good stability of noble metal doped ZnO nanorods.

Method used

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  • Preparation method of a glucose sensor with noble metal doped zinc oxide nanorods
  • Preparation method of a glucose sensor with noble metal doped zinc oxide nanorods

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Embodiment 1

[0034] The invention provides a method for preparing a glucose sensor with noble metal doped zinc oxide nanorods. The noble metal-zinc oxide nanocomposite material and glucose oxidase are jointly modified to a glassy carbon electrode to prepare an electrochemical biosensor.

[0035] The preparation method of the precious metal doped zinc oxide nanorod glucose sensor of the present invention includes the following steps:

[0036] (1) Preparation of a precious metal-doped zinc oxide nanocomposite material; the precious metal-doped zinc oxide nanocomposite material is a silver-doped zinc oxide nanocomposite material.

[0037] In step (1), take 3.0mmol of zinc nitrate Zn(NO 3 ) 2 ·6H 2 O and xmmol of silver nitrate AgNO 3 (x = 0, 0.02, 0.25, 0.56, 0.96) Placed in a stainless steel reactor lined with PTFE with a volume of 100ml, add 80ml absolute ethanol solution to make the filling degree of the PTFE reactor reach 80%, Stir at room temperature for 10 minutes, weigh 30.0mmol of sodium hyd...

Embodiment 2

[0052] The difference between embodiment 2 and embodiment 1 is that in step (1), the noble metal-doped zinc oxide nanocomposite material is a platinum-doped zinc oxide nanocomposite material. Take 3.0mmol zinc nitrate Zn(NO 3 ) 2 ·6H 2 O and xmmol of platinum nitrate Pt(NO 3 ) 2 (x=0,0.01,0.14,0.31,0.60) Placed in a stainless steel reactor lined with PTFE with a volume of 100ml, add 80ml absolute ethanol solution to make the filling degree of the PTFE reactor reach 80%, Stir at room temperature for 10 minutes, weigh 30.0mmol of sodium hydroxide NaOH into the above solution, and stir at room temperature for 1 hour until it is completely dissolved;

[0053] Then, it was reacted at 120℃ for 12h in an electric thermostatic blast drying box. After the reaction system was naturally cooled to room temperature, it was taken out, filtered by suction, washed with deionized water and absolute ethanol for several times, and after suction filtered, the sample was placed in After drying in an ...

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Abstract

The invention discloses a preparation method of a noble metal-doped zinc oxide nanorod glucose sensor. The noble metal-zinc oxide nanocomposite material and glucose oxidase are jointly modified on a glassy carbon electrode to prepare an electrochemical biosensor. The preparation method of the electrochemical glucose biosensor of the present invention comprises the following steps: (1) preparing the zinc oxide nanocomposite material doped with noble metal; (2) dispersing the zinc oxide nanocomposite material doped with noble metal under ultrasound In deionized water, an aqueous solution of noble metal-doped zinc oxide is formed; (3) a pretreated glassy carbon electrode is prepared; (4) an electrochemical glucose biosensor is prepared. The sensor prepared by the invention is simple, fast, low in cost, high in sensitivity, good in reproducibility and stability. Can be used for the detection of glucose concentration.

Description

Technical field [0001] The invention belongs to the technical field of electrochemical analysis, and specifically relates to a method for preparing a glucose sensor with noble metal doped zinc oxide nanorods. Background technique [0002] Diabetes seriously endangers human health, so it is particularly important for the diagnosis of diabetes. By detecting the concentration of glucose in human blood, people's physical health can be indirectly known, providing a platform for the diagnosis of diabetes. [0003] At present, the methods for detecting glucose concentration include chromatography, spectrophotometry, optical rotation, colorimetry, etc. These analytical methods are low in sensitivity, laborious, and time-consuming, while the electrochemical biosensor method has higher sensitivity and analysis Fast speed, high selectivity, simple instrument operation, low price and so on. [0004] In recent years, electrochemical analysis has become a very competitive on-site detection metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/49G01N27/327
Inventor 杨占军徐有宝李娟
Owner YANGZHOU UNIV
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