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Preparation method of self-energy-providing glucose inspection electrochemical sensor based on ZnxBi2S3+x sensitized NiTiO3

A photoelectrochemical and glucose technology, applied in the direction of material electrochemical variables, scientific instruments, instruments, etc., to achieve the effect of simple synthesis method, large specific surface area, and promotion of transfer and delivery

Inactive Publication Date: 2019-06-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

NiTiO 3 The application of materials in photoelectrochemical sensors has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 Preparation of photoelectrochemical sensor

[0032] 1. Based on Zn x Bi 2 S 3+x Sensitized NiTiO 3 The preparation method of self-powered glucose detection photoelectrochemical sensor is characterized in that it comprises the following steps:

[0033] (1) NiTiO 3 preparation of

[0034] Take 2.0 g of nickel acetate and 3.0 mL of n-tetrabutyl titanate and dissolve them in 30 mL of ethylene glycol, stir to obtain a green solution, then stir at room temperature for 10 min, a bright blue precipitate gradually forms, continue to stir for 1 h, and the resulting precipitate Washed three times with ethanol, dried in vacuum at 40 °C for 4 h, and calcined at 400 °C for 1 h to obtain NiTiO 3 nanorod material;

[0035] (2) NiTiO 3 / Zn x Bi 2 S 3+x Electrode preparation

[0036] 1) Clean the conductive glass with washing powder, acetone, ethanol and ultrapure water in sequence, and dry it with nitrogen;

[0037] 2) Take 6 μL of NiTiO with a concentration of...

Embodiment 2

[0041] Example 2 Preparation of photoelectrochemical sensor

[0042] 1. Based on Zn x Bi 2 S 3+x Sensitized NiTiO 3 The preparation method of self-powered glucose detection photoelectrochemical sensor is characterized in that it comprises the following steps:

[0043] (1) NiTiO 3 preparation of

[0044] Take 2.5 g of nickel acetate and 3.5 mL of n-tetrabutyl titanate and dissolve them in 40 mL of ethylene glycol, stir to obtain a green solution, then stir at room temperature for 10 min, a bright blue precipitate gradually forms, continue to stir for 1.5 h, and the obtained precipitate Washed with ethanol four times, dried in vacuum at 45 °C for 5 h, and calcined at 450 °C for 2 h to obtain NiTiO 3 nanorod material;

[0045] (2) NiTiO 3 / Zn x Bi 2 S 3+x Electrode preparation

[0046] 1) Clean the conductive glass with washing powder, acetone, ethanol and ultrapure water in sequence, and dry it with nitrogen;

[0047] 2) Take 8 μL of NiTiO with a concentration of 4 ...

Embodiment 3

[0051] Example 3 Preparation of photoelectrochemical sensor

[0052] 1. Based on Zn x Bi 2 S 3+x Sensitized NiTiO 3 The preparation method of self-powered glucose detection photoelectrochemical sensor is characterized in that it comprises the following steps:

[0053] (1) NiTiO 3 preparation of

[0054] Take 3.0 g of nickel acetate and 4.0 mL of n-tetrabutyl titanate and dissolve them in 70 mL of ethylene glycol, stir to obtain a green solution, then stir at room temperature for 30 min, a bright blue precipitate gradually forms, continue to stir for 2 h, and the obtained precipitate Washed 5 times with ethanol, dried in vacuum at 60°C for 6 h, and calcined at 600°C for 4 h to obtain NiTiO 3 nanorod material;

[0055] (2) NiTiO 3 / Zn x Bi 2 S 3+x Electrode preparation

[0056] 2) Clean the conductive glass with washing powder, acetone, ethanol and ultrapure water in sequence, and dry it with nitrogen;

[0057] 2) Take 10 μL of NiTiO with a concentration of 6 mg / mL ...

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Abstract

The invention relates to a preparation method of a self-energy-providing glucose inspection electrochemical sensor based on ZnxBi2S3+x sensitized NiTiO3. The method successfully enables ZnxBi2S3+x tobe modified in situ to NiTiO3 surface through a continuous ion layer adsorption mode, thereby making up for the problem of low utilization efficiency of NiTiO3 for visible light; and meanwhile, through a matched band-gap structure and excellent sensitization, photoelectric conversion efficiency is greatly improved, and good photoelectric response is obtained. Glucose oxidase is modified on an electrode and catalyzes glucose to be detected in an electrolyte solution to produce gluconic acid and hydrogen peroxide, wherein the latter serves as an electron donor and can be combined with photogenerated holes generated by the ZnxBi2S3+x, thereby well hindering combination of photo-induced electron-holes, further promoting transfer and transmission of photo-induced electrons and improving sensitivity of the optoelectronic signal and the prepared sensor; by catalyzing different concentrations of glucose, different degrees of photoelectric response is generated, and detection of glucose is realized; and limit of detection is 0. 35 muM.

Description

technical field [0001] The present invention relates to based on Zn x Bi 2 S 3+x Sensitized NiTiO 3 The preparation method of self-energy glucose detection photoelectrochemical sensor, specifically, Zn is adsorbed by continuous ion layer x Bi 2 S 3+x Modified on NiTiO 3 On the surface, glucose oxidase is modified on the electrode to catalyze the glucose to be detected in the electrolyte, and hydrogen peroxide is generated to improve the photocurrent response. A self-powered sensor for detecting glucose is prepared, which belongs to new functional materials and biosensing detection technology field. Background technique [0002] Glucose is the most widely distributed and most important monosaccharide in nature. It is an indispensable nutrient in human life activities. It can directly participate in the process of metabolism in the human body. In the human digestive tract, glucose is easier to absorb than any other monosaccharide, and can be directly used by human tiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/32G01N27/327
Inventor 魏琴徐芮杜斌张勇马洪敏鞠熀先范大伟
Owner UNIV OF JINAN
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