Preparation method for porous boron-doped diamond composite electrode with bimetallic synergistic effect and application of porous boron-doped diamond composite electrode in detection of glucose

A boron-doped diamond and bimetallic synergy technology is applied to the preparation of a porous boron-doped diamond composite electrode with bimetallic synergistic effect and its application field for glucose detection, which can solve the problems of low sensitivity of glucose and achieve strong redox, High stability effect

Active Publication Date: 2019-12-31
HARBIN INST OF TECH
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Problems solved by technology

[0004] The present invention aims to solve the problem that there is no existing method for preparing a porous boron-doped diamond composite electrode, and the existing non-enzymatic glucose sensor using a boron-doped diamond electrode has a low sensitivity for detecting glucose, and provides a porous boron-doped composite electrode with a bimetallic synergistic effect. Preparation method of diamond composite electrode and its application in detecting glucose

Method used

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  • Preparation method for porous boron-doped diamond composite electrode with bimetallic synergistic effect and application of porous boron-doped diamond composite electrode in detection of glucose
  • Preparation method for porous boron-doped diamond composite electrode with bimetallic synergistic effect and application of porous boron-doped diamond composite electrode in detection of glucose
  • Preparation method for porous boron-doped diamond composite electrode with bimetallic synergistic effect and application of porous boron-doped diamond composite electrode in detection of glucose

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specific Embodiment approach 1

[0027] Specific embodiment one: present embodiment a kind of preparation method of the porous boron-doped diamond composite electrode with double metal synergistic effect, it is carried out according to the following steps:

[0028] 1. Preparation of boron-doped diamond film:

[0029] Place the silicon wafer in a spin coater, and drop the nano-diamond suspension with a mass percentage of 2% to 15% under the condition of a rotating speed of 500 rpm to 2000 rpm, and spin coat it for 3 to 6 times , and dried to obtain a silicon wafer spin-coated with nano-diamonds, place the silicon wafers and graphite wafers spin-coated with nano-diamonds side by side on the sample stage of a microwave plasma chemical vapor deposition device, feed hydrogen and diborane gas, and The flow rate of hydrogen is 100sccm~500sccm, the flow rate of diborane gas is 1sccm~20sccm, the temperature of silicon wafer spin-coated with nano-diamond is 550℃~1000℃, the temperature of graphite sheet is 650℃~1100℃, t...

specific Embodiment approach 2

[0038] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the graphite flakes described in step 1 have a purity of 99.9%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0039] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the graphite sheet described in step 1 is a square sheet with a side length of 20 mm to 60 mm and a thickness of 2 mm to 5 mm. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method for a porous boron-doped diamond composite electrode with a bimetallic synergistic effect and application of the porous boron-doped diamond composite electrode in detection of glucose, relates to a preparation method and application for the porous boron-doped diamond composite electrode and aims at solving the problems that the method of preparing the porous boron-doped diamond composite electrode does not exist at present, and the glucose detection sensitivity by utilizing a boron-doped diamond electrode nonenzymatic glucose sensor is relatively low at present. The preparation method comprises the following steps of 1, preparation of a boron-doped diamond film; and 2, sputtering coating and annealing treatment. The application is used for detecting glucose. The invention is used for preparing the porous boron-doped diamond composite electrode with the double-metal synergistic effect and the application of the porous boron-doped diamond composite electrode in detection of the glucose.

Description

technical field [0001] The invention relates to a preparation method and application of a porous boron-doped diamond composite electrode. Background technique [0002] Glucose plays an important role in the field of biology. It is the energy source and metabolic intermediate product of living cells, that is, the main energy supply material for organisms. Many diseases of the human body are related to the glucose content in the body, such as diabetes. In addition, glucose is also widely used in fields such as candy manufacturing. Therefore, the determination of glucose content is of great significance in the fields of biomedicine and food processing. At present, glucose detectors mainly use glucose biosensors based on glucose oxidase to detect glucose. However, such sensors are expensive, sensitive to ambient temperature and humidity, and lack long-term stability. [0003] In contrast, boron-doped diamond material has the advantages of low price and good stability as a no...

Claims

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Application Information

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IPC IPC(8): C23C16/511C23C16/27C23C14/35C23C14/18C23C14/58C01B32/28G01N27/327G01N27/48
CPCC23C14/185C23C14/352C23C14/5806C23C16/278C23C16/511C01B32/28G01N27/3277G01N27/3278G01N27/48
Inventor 朱嘉琦姚凯丽代兵谭小俊杨磊孙明琪高鸽韩杰才
Owner HARBIN INST OF TECH
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