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Preparation and application of a copper oxide core-shell nanowire array material

A nanowire array and core-shell nanotechnology, applied in the field of electroanalytical chemical detection, can solve the problems affecting the application of enzyme-free glucose sensors, reducing catalytic active sites, and active material falling off, and achieves simple and controllable preparation methods with low detection Extreme, low-cost effect

Active Publication Date: 2019-12-24
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when nanoscale microscopic materials are used to construct macroscopic electrodes, problems such as agglomeration of nanomaterials are prone to occur, thereby reducing the active sites of catalysis, and in the subsequent test process, active substances are easy to fall off from the electrode surface, thereby affecting enzyme-free glucose. Sensor application

Method used

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  • Preparation and application of a copper oxide core-shell nanowire array material
  • Preparation and application of a copper oxide core-shell nanowire array material
  • Preparation and application of a copper oxide core-shell nanowire array material

Examples

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Effect test

Embodiment 1

[0026] CuO / Cu 2 The preparation method of O nanowire array, comprises the following steps:

[0027] (1) Utilize the ultrasonic effect of an ultrasonic cleaner to sonicate high-purity Cu sheets (>99.9%) and high-purity Ti sheets (>99.9%) in acetone, absolute ethanol, and deionized water for 5-30 minutes respectively to remove the surface Oil stains and oxides are obtained to obtain Cu sheets and Ti sheets with clean surfaces, which are then put into an oven for drying at 80°C for use;

[0028] (2) Take the cleaned high-purity Cu sheet as the anode and the high-purity Ti sheet as the cathode, and place it in 2mol L -1 The anodic oxidation reaction was carried out in KOH aqueous solution with a current density of 2.5mA cm -2 , the reaction time is 10min, the reaction temperature is 10℃, and Cu(OH) 2 nanowire arrays;

[0029] (3) Cu(OH) obtained in step (2) 2 The nanowire array was placed in an annealing furnace for air annealing, the annealing temperature was 350°C, and the...

Embodiment 2

[0031] A method for preparing a copper oxide core-shell nanowire array material, comprising the following steps:

[0032] (1) Utilize the ultrasonic effect of an ultrasonic cleaner to sonicate high-purity Cu sheets (>99.9%) and high-purity Ti sheets (>99.9%) in acetone, absolute ethanol, and deionized water for 5-30 minutes respectively to remove the surface Oil stains and oxides are obtained to obtain Cu sheets and Ti sheets with clean surfaces, which are then put into an oven for drying at 80°C for use;

[0033] (2) Take the cleaned high-purity Cu sheet as the anode and the high-purity Ti sheet as the cathode, and place it in 2mol L -1 The anodic oxidation reaction was carried out in KOH aqueous solution with a current density of 2.5mA cm-2 , the reaction time is 10min, the reaction temperature is 10℃, and Cu(OH) 2 nanowire arrays;

[0034] (3) Cu(OH) obtained in step (2) 2 Nanowire array placed in 50mmol L -1 In the absolute ethanol solution of 1,3,5-benzenetricarboxyli...

Embodiment 3

[0037] A method for preparing a copper oxide core-shell nanowire array material, comprising the following steps:

[0038] (1) Utilize the ultrasonic effect of an ultrasonic cleaner to ultrasonicate high-purity Cu sheets (>99.9%) and high-purity Ti sheets (>99.9%) in acetone, absolute ethanol, and deionized water for 5 to 30 minutes, respectively, to remove the surface Oil stains and oxides are obtained to obtain Cu sheets and Ti sheets with clean surfaces, which are then put into an oven for drying at 80°C for use;

[0039] (2) Take the cleaned high-purity Cu sheet as the anode and the high-purity Ti sheet as the cathode, and place it in 2mol L -1 The anodic oxidation reaction was carried out in KOH aqueous solution with a current density of 2.5mA cm -2 , the reaction time is 10min, the reaction temperature is 10℃, and Cu(OH) 2 nanowire arrays;

[0040] (3) Cu(OH) obtained in step (2) 2 Nanowire array placed in 50mmol L -1 In the absolute ethanol solution of 1,3,5-benzene...

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Abstract

The invention discloses a preparation method and application of a copper oxide core-shell nanowire array material. The preparation method comprises the following steps: preparing a Cu(OH)2 nanowire array by using an anodic oxidation method; performing in-situ synthesis on HKUST-1 on the surface of the Cu(OH)2 nanowire array so as to obtain a Cu(OH)2 / HKUST-1 core-shell nanowire array; and annealing the Cu(OH)2 / HKUST-1 core-shell nanowire array in an air atmosphere, thereby obtaining a CuO / Cu2O@CuO / Cu2O core-shell nanowire array. The material can be directly used as an electrode material of a non-enzyme glucose sensor, and the preparation process of an electrode is greatly simplified.

Description

technical field [0001] The invention relates to a preparation method and application of a copper oxide core-shell nanowire array material, belonging to the technical field of electroanalytical chemical detection. Background technique [0002] In recent years, the development of high-performance glucose sensors has attracted more and more research interests. Compared with the traditional enzyme-based glucose sensor, the enzyme-free glucose sensor does not require the use of enzymes, avoiding the disadvantages of poor stability caused by the inactivation of enzymes caused by environmental factors such as temperature, toxicity, and pH value, and its Glucose can be directly electrocatalyzed at constant potential on the surface of the electrode, so the construction of high-performance enzyme-free glucose sensor electrode materials has received extensive attention. In the past, most of the research on electrode materials for enzyme-free glucose sensors focused on noble metals, su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30C25D11/34
CPCC25D11/34G01N27/30
Inventor 吴玉程余翠平崔接武王岩张勇舒霞
Owner HEFEI UNIV OF TECH
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