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Electrochemical sensor based on biomass carbon and preparation method and electrocatalysis application thereof

A technology of biomass carbon and electrochemistry, applied in the field of electrochemistry, can solve the problems of long production cycle and cumbersome operation steps, and achieve the effects of low equipment corrosion, large overpotential and simple preparation method

Inactive Publication Date: 2018-06-29
MUDANJIANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the method of preparing porous carbon materials from biomass is generally based on the method of first carbonization and then activation, which has the disadvantages of cumbersome operation steps and long production cycle.

Method used

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  • Electrochemical sensor based on biomass carbon and preparation method and electrocatalysis application thereof
  • Electrochemical sensor based on biomass carbon and preparation method and electrocatalysis application thereof
  • Electrochemical sensor based on biomass carbon and preparation method and electrocatalysis application thereof

Examples

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Embodiment 1

[0045]The electrochemical sensor based on biomass carbon in this embodiment is constructed by using a biomass nanoporous material-modified electrode as a working electrode, a saturated calomel electrode as a reference electrode, and a platinum wire electrode as an auxiliary electrode.

[0046] The preparation of the biomass nanoporous material in this embodiment, the preparation process is as follows:

[0047] Soak the foxtail cilia with acetone for 1 hour, then ultrasonically clean it with distilled water for 3-4 times, put it in an oven and dry it, weigh 2 g of the washed, dried and chopped foxtail cilia, add it to 12 mL of phosphoric acid (50%), and stir at room temperature for 12 hours After that, vacuum dry. Subsequently, the obtained acid-etched Foxtail cilia was transferred to a tube furnace, and argon was introduced, and the temperature was first raised to 150°C at a heating rate of 5°C / min, kept for 6 hours, and then continued to heat up at a heating rate of 10°C / min ...

Embodiment 2

[0051] This embodiment is based on the electrochemical sensor of biomass carbon, and its preparation process is specifically the same as that of Example 1, the only difference being that the solid-liquid ratio of foxtail cilia and 50% phosphoric acid solution is different in the process of preparing biomass nanoporous materials , the solid-liquid ratio of Foxtail cilia and 50% phosphoric acid solution in this example is 1g:8mL.

Embodiment 3

[0053] This embodiment is based on the electrochemical sensor of biomass carbon, and its preparation process is the same as that of Embodiment 1, the only difference is: the process of preparing biomass nanoporous materials is different, and the specific process of this embodiment is as follows:

[0054] Soak the foxtail cilia with acetone for 1 hour, then ultrasonically clean it with distilled water for 3-4 times, put it in an oven and dry it, weigh 2 g of the washed, dried and chopped foxtail cilia, add it to 12 mL of phosphoric acid (50%), and stir at room temperature for 12 hours After that, vacuum dry. Subsequently, the obtained acid-etched Foxtail cilia was transferred to a tube furnace, and argon was introduced, and the temperature was first raised to 150°C at a heating rate of 5°C / min, kept for 6 hours, and then continued to heat up at a heating rate of 10°C / min To 550°C, keep warm for 1h. Then, the product obtained by high-temperature pyrolysis was cooled to room tem...

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Abstract

The invention discloses a preparation method of an electrochemical sensor based on biomass carbon and an electrocatalysis application thereof. The preparation method takes hollow thin wall-structure setaria viridis cilia as a precursor, and a nano porous material is obtained through a one-step high-temperature pyrolysis activating method, the material is prepared to a solution, and then is used for coating the surface of a glassy carbon electrode, a modification electrode is a work electrode, and the electrochemical sensor based on biomass carbon is prepared. The prepared electrochemical sensor is used for electrochemical oxidation of tryptophan, the result displays that the overpotential of tryptophan on the electrochemical sensor is obviously reduced, and the electric current of an oxidation peak is obviously increased, the introduction of the nano porous material is capable of promoting electron transfer and mass diffusion, and provides more active sites, and electrocatalysis effectof the tryptophan by the sensor is realized. The related raw material is weed which has the characteristics of large hazardness, low utilization value and difficult processing, and has good social benefit.

Description

technical field [0001] The invention relates to the field of electrochemical technology, in particular to an electrochemical sensor based on biomass carbon, a preparation method thereof, and an electrocatalytic application. Background technique [0002] Tryptophan is one of the essential amino acids, which plays a vital role in metabolism. In addition to being used to synthesize proteins for human growth, tryptophan is a precursor for the manufacture of serotonin, niacin, and melatonin. A reasonable intake of tryptophan can prevent and treat a variety of diseases such as Alzheimer's disease, liver disease, depression and schizophrenia. Therefore, sensitive and accurate detection of tryptophan is of great significance for disease prevention and human health. At present, a variety of methods including high performance liquid chromatography, fluorescence analysis and chemiluminescence have been used to detect tryptophan, but the above methods have the disadvantages of expensi...

Claims

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Application Information

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IPC IPC(8): G01N27/327G01N27/30G01N27/36G01N31/10
CPCG01N27/308G01N27/3277G01N27/3278G01N27/36G01N31/10
Inventor 韩俊凤邵长斌姜力
Owner MUDANJIANG NORMAL UNIV
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