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Boron-doped diamond microarray electrode loaded by metal nanosheets, preparation method of boron-doped diamond microarray electrode and application of boron-doped diamond microarray electrode in glucose sensor

A boron-doped diamond and microarray electrode technology, which is applied in the field of boron-doped diamond microarray electrodes, can solve the problems of low efficiency, slow processing speed, unfavorable electrode industrial preparation, etc., achieve high efficiency, short time consumption, and promote dense adhesion growth Effect

Active Publication Date: 2022-01-21
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The currently reported methods for preparing diamond micro-nanostructures mainly include template method, electron beam lithography (EBL), inductively coupled reactive ion etching (ICP-RIE) and focused ion beam etching (FIB), etc. Several methods usually involve photolithography or plasma etching process, which require expensive equipment, and the processing rate is slow and inefficient, which is not conducive to the large-area industrial preparation of electrodes

Method used

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  • Boron-doped diamond microarray electrode loaded by metal nanosheets, preparation method of boron-doped diamond microarray electrode and application of boron-doped diamond microarray electrode in glucose sensor
  • Boron-doped diamond microarray electrode loaded by metal nanosheets, preparation method of boron-doped diamond microarray electrode and application of boron-doped diamond microarray electrode in glucose sensor
  • Boron-doped diamond microarray electrode loaded by metal nanosheets, preparation method of boron-doped diamond microarray electrode and application of boron-doped diamond microarray electrode in glucose sensor

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Effect test

Embodiment 1

[0038] A method for preparing a boron-doped diamond microarray electrode supported by metal nanosheets, such as figure 1 As shown, the specific steps are as follows:

[0039] (1) The boron-doped diamond (10×10×0.3 mm in length×width×thickness) was ultrasonically cleaned in acetone, absolute ethanol and deionized water for 15 minutes to remove surface pollutants.

[0040] (2) Design a circular microarray, the circular microarray is composed of a plurality of conical pits, the diameter of the pit is about 20 μm, and the interval between horizontal or vertical adjacent points is set to 30 μm; the area of ​​the circular microarray It is one side composed of boron-doped diamond length and width, and covers the entire surface to the greatest extent;

[0041] By lifting the laser stage, the laser focus is focused on the surface of the boron-doped diamond sample, using nanosecond laser (wavelength λ=1064nm, power P=12W, repetition frequency f=20kHz, pulse width 10 microseconds, spot ...

Embodiment 2

[0054] A method for preparing a boron-doped diamond microarray electrode supported by metal nanosheets, the specific steps are as follows:

[0055] (1) The boron-doped diamond (10×10×0.3 mm in length×width×thickness) was ultrasonically cleaned in acetone, absolute ethanol and deionized water for 15 minutes to remove surface pollutants.

[0056] (2) Design a circular microarray, the circular microarray is composed of a plurality of conical pits, the diameter of the pit is about 20 μm, and the interval between horizontal or vertical adjacent points is set to 30 μm; the area of ​​the circular microarray It is one side composed of boron-doped diamond length and width, and covers the entire surface to the greatest extent;

[0057] By lifting the laser stage, the laser focus is focused on the surface of the boron-doped diamond sample, using nanosecond laser (wavelength λ=1064nm, power P=12W, repetition frequency f=20kHz, pulse width 10 microseconds, spot diameter 32μm) The surface ...

Embodiment 3

[0060] A method for preparing a boron-doped diamond microarray electrode supported by metal nanosheets, the specific steps are as follows:

[0061] (1) The boron-doped diamond (10×10×0.3 mm in length×width×thickness) was ultrasonically cleaned in acetone, absolute ethanol and deionized water for 15 minutes to remove surface pollutants.

[0062] (2) Design a circular microarray, the circular microarray is composed of a plurality of conical pits, the diameter of the pit is about 20 μm, and the interval between horizontal or vertical adjacent points is set to 30 μm; the area of ​​the circular microarray It is one side composed of boron-doped diamond length and width, and covers the entire surface to the greatest extent;

[0063] By lifting the laser stage, the laser focus is focused on the surface of the boron-doped diamond sample, using nanosecond laser (wavelength λ=1064nm, power P=12W, repetition frequency f=20kHz, pulse width 10 microseconds, spot diameter 32μm) The surface ...

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Abstract

The invention provides a boron-doped diamond microarray electrode loaded by metal nanosheets, a preparation method of the boron-doped diamond microarray electrode and application of the boron-doped diamond microarray electrode in a glucose sensor. According to the method, the boron-doped diamond microarray electrode is rapidly prepared by utilizing a nanosecond pulse laser processing method, a metal nanosheet is further loaded on the surface of the microarray electrode to obtain a more open, sensitive and selective surface, the preparation cost is low, the consumed time is short, the efficiency is high, and large-area industrial preparation of the electrode is facilitated. The prepared metal nanosheet-loaded boron-doped diamond microarray electrode shows excellent comprehensive performance in glucose sensing application, including a detection linear range of 0-2mM, high sensitivity (the sensitivity is 2119 [mu]A mM<-1>cm<-2>), short response time, extremely low detection limit (0.2 [mu]M), good cycle periodicity, stability and anti-interference performance; the method is expected to be importantly applied in a severe environment.

Description

technical field [0001] The invention relates to a boron-doped diamond microarray electrode supported by metal nanosheets, a preparation method thereof and an application in a glucose sensor, belonging to the technical fields of diamond surface micromachining technology and biosensors. Background technique [0002] Carbon-based materials such as graphene, carbon nanotubes, boron-doped diamond (BDD), etc., are widely used in electronic devices, biosensing, electrochemical catalysis, Supercapacitors and other fields. Among them, BDD, as the only wide-bandgap semiconductor, has the advantages of high chemical stability, low pollution, low background current, wide electrochemical window, and high signal-to-noise ratio, and is considered to be the most ideal electrode material. Based on the above excellent characteristics, BDD has been widely reported in the fields of simultaneous detection of epinephrine and lidocaine, real-time tracking of drugs, treatment of refractory toxic o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/30G01N27/327
CPCG01N27/26G01N27/30G01N27/3272
Inventor 刘铎高倩张汪阳赵超鹏颜为山韩素芹李岩岩胡绍晨
Owner SHANDONG UNIV
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