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Electrode modification material for improving detection performance of biosensor on heavy metal

A biosensor and electrode modification technology, which is applied in the direction of material analysis, material analysis, and material electrochemical variables through electromagnetic means, can solve problems such as pollution control and difficulty in detecting the existence of heavy metal particles, and improve development, utilization, and detection. Fast, fast and sensitive results

Active Publication Date: 2019-06-07
宿州青果知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the deterioration of the environment, the residue of heavy metal particles in the living body is extremely serious. In the early stage of the biological chain, it is difficult to detect the existence of heavy metal particles, so that it is impossible to control pollution from the source. If the sensitivity of biosensors and The detection accuracy is doubled, so heavy metal pollution will have nowhere to hide

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  • Electrode modification material for improving detection performance of biosensor on heavy metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An electrode modification material for improving the detection of heavy metals in a biosensor, the preparation method comprising the following steps:

[0017] (1) Weigh 1.8 grams of yttrium nitrate crystals, add them to a 100-ml beaker, add 30 ml of acetic acid aqueous solution to the beaker, and heat to 90°C in an oil bath, and gradually dissolve the crystals under stirring. After completely dissolving, add 0.33 gram graphene, supersonic treatment 5 minutes, obtain mixture and transfer in the round bottom flask, add 40 milliliters of acetones in the flask, carry out heating reflux reaction after shaking up, reaction temperature is 70 ℃, and the reaction time is 2.5 hours, after the reaction finishes, The obtained reaction product was centrifuged at 4500 rpm for 2 minutes, the supernatant solution was taken, and dried at 140° C. for 70 minutes with a rotary evaporator to obtain a yttrium oxide-graphene oxide composite material;

[0018] (2) Disperse the yttrium oxide-gr...

Embodiment 2

[0024] An electrode modification material for improving the detection of heavy metals in a biosensor, the preparation method comprising the following steps:

[0025] (1) Weigh 1.85 g of yttrium nitrate crystals, add them to a 100 ml beaker, add 33 ml of acetic acid aqueous solution to the beaker, and heat it to 95°C in an oil bath, gradually dissolve the crystals under stirring, and add 0.34 gram of graphene, ultrasonic treatment for 6.5 minutes, the obtained mixture was transferred to a round-bottomed flask, 42 ​​milliliters of acetone was added in the flask, heated and refluxed after shaking up, the reaction temperature was 75°C, and the reaction time was 2.8 hours. After the reaction, The obtained reaction product was centrifuged at 4800 rpm for 2 minutes, the supernatant solution was taken, and dried at 145° C. for 75 minutes with a rotary evaporator to obtain a yttrium oxide-graphene oxide composite material;

[0026] (2) Disperse the yttrium oxide-graphene oxide composit...

Embodiment 3

[0032] An electrode modification material for improving the detection of heavy metals in a biosensor, the preparation method comprising the following steps:

[0033] (1) Weigh 1.9 grams of yttrium nitrate crystals, add them to a 100-ml beaker, add 35 ml of acetic acid aqueous solution to the beaker, and heat it to 100°C in an oil bath, and gradually dissolve the crystals under stirring. After completely dissolving, add 0.35 gram graphene, sonicated for 8 minutes, and the mixture was transferred to a round-bottomed flask, and 45 milliliters of acetone was added in the flask, and after shaking up, reflux reaction was carried out. The reaction temperature was 80° C., and the reaction time was 3.0 hours. After the reaction, The obtained reaction product was centrifuged at 5000 rpm for 3 minutes, the supernatant solution was taken, and dried at 150° C. for 80 minutes with a rotary evaporator to obtain a yttrium oxide-graphene oxide composite material;

[0034](2) Disperse the yttri...

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Abstract

The invention relates to the technical field of a novel functional material, and discloses an electrode modification material for improving the detection performance of a biosensor on heavy metal. Yttrium nitrate and graphene are used as raw materials to synthetize a yttrium oxide-oxidized graphene composite material; the electrode modification material obtained through further preparation has theadvantages that the nanometer grade pore diameter is realized; the fluorescence color development performance is realized; the content of heavy metal particles in a target object can be fast detectedby a small number of electrode modification materials; the anti-interference capability is high; the electrode modification material can be further used as a modification material to be added into awork electrode; when the electrode modification material is applied to the biosensor, the specific recognition capability is realized on the heavy metal particles; the advantages that the detection sensitivity is high, the cost is low, the detection range is wide, and the service life is long are achieved. The properties such as pollution prevention and interference resistance are realized.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and in particular relates to an electrode modification material for improving the detection performance of a biosensor for heavy metals. Background technique [0002] Sensors, also called sensors. It is a device that can convert physical or chemical quantities into electrical signals that are easy to use. The national standard GB7665-87 defines a sensor as: "a device or device that can sense a specified measured value and convert it into a usable signal according to a certain rule, usually consisting of a sensitive element and a conversion element." A sensor is a detection device that can feel the measured information, and can convert the detected information into electrical signals or other required forms of information output according to certain rules, so as to meet the needs of information transmission, processing, storage, display, recording and control requirements. It i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327G01N27/30
Inventor 余秀芳
Owner 宿州青果知识产权服务有限公司
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