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Simple preparation method of transparent electrode of ultralow-concentration hydrogen peroxide sensor

A transparent electrode, ultra-low concentration technology, applied in the field of chemical sensors, can solve problems such as inability to detect hydrogen peroxide, and achieve the effects of avoiding complex transfer processes, simple preparation methods, and strong anti-interference performance.

Inactive Publication Date: 2020-04-07
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sensor involved in this invention can realize rapid and sensitive detection of hydrogen peroxide in an aqueous solution containing a trace amount of hydrogen peroxide, but the lower detection limit is 0.1 μmol / L, which is still relatively high, and cannot detect hydrogen peroxide at a lower concentration

Method used

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  • Simple preparation method of transparent electrode of ultralow-concentration hydrogen peroxide sensor

Examples

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Effect test

Embodiment 1

[0034] A simple and convenient preparation method for a transparent electrode of an ultra-low concentration hydrogen peroxide sensor, comprising the following steps:

[0035] (1) Use methane as the carbon source gas, argon as the carrier gas, and hydrogen as the reducing gas to form a mixed gas, pass it into the chemical vapor deposition equipment, and use the normal pressure (one atmospheric pressure) chemical vapor deposition method at a temperature of 1000°C Deposit and grow graphene on the surface of quartz glass for 3h to prepare graphene on quartz glass; the volume ratio of the argon, hydrogen and carbon source gas is 30:5:1, and the flow rate of the mixed gas is 300 sccm.

[0036](2) With platinum sheet (purity 99.99wt%) as sputtering target, using vacuum magnetron sputtering equipment, control sputtering pressure 0.3Pa, sputtering power 200W, sputtering time 1min, sputtering temperature is room temperature, in quartz Platinum nanoparticles were sputtered on the surface...

Embodiment 2

[0046] A simple and convenient preparation method for a transparent electrode of an ultra-low concentration hydrogen peroxide sensor, comprising the following steps:

[0047] (1) Use methane as the carbon source gas, argon as the carrier gas, and hydrogen as the reducing gas to form a mixed gas, pass it into the chemical vapor deposition equipment, and use the normal pressure (one atmospheric pressure) chemical vapor deposition method at a temperature of 1050°C Deposit and grow graphene on the surface of quartz glass for 2h to prepare graphene on quartz glass; the volume ratio of the argon, hydrogen and carbon source gas is 30:5:1, and the flow rate of the mixed gas is 400 sccm.

[0048] (2) With platinum sheet (purity 99.99wt%) as sputtering target, using vacuum magnetron sputtering equipment, control sputtering pressure 0.5Pa, sputtering power 300W, sputtering time 40s, sputtering temperature room temperature, in quartz glass Platinum nanoparticles were sputtered on the surf...

Embodiment 3

[0050] A simple and convenient preparation method for a transparent electrode of an ultra-low concentration hydrogen peroxide sensor, comprising the following steps:

[0051] (1) Use methane as the carbon source gas, argon as the carrier gas, and hydrogen as the reducing gas to form a mixed gas, pass it into the chemical vapor deposition equipment, and use the normal pressure (one atmospheric pressure) chemical vapor deposition method at a temperature of 950°C Deposit and grow graphene on the surface of quartz glass for 4h to prepare graphene on quartz glass; the volume ratio of the argon, hydrogen and carbon source gas is 30:5:1, and the flow rate of the mixed gas is 200 sccm.

[0052] (2) Using platinum sheet (purity 99.99wt%) as sputtering target, using vacuum magnetron sputtering equipment, control sputtering pressure 0.7Pa, sputtering power 100W, sputtering time 2min, sputtering temperature room temperature, in quartz glass Platinum nanoparticles were sputtered on the sur...

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Abstract

The invention provides a simple preparation method of a transparent electrode of an ultralow-concentration hydrogen peroxide sensor, which comprises the following steps: by using methane as a carbon source gas, depositing and growing graphene on the surface of quartz glass by a normal-pressure chemical vapor deposition method to obtain quartz glass graphene; and then sputtering platinum nanoparticles on the surface of the quartz glass graphene by taking a platinum sheet as a sputtering target and utilizing a vacuum magnetron sputtering process to prepare the graphene glass composite platinum nanoparticle transparent electrode. The preparation method is simple, the obtained electrode can be used as an independent transparent electrode to be applied to a sensor, ultralow-concentration hydrogen peroxide can be detected, the lower detection limit is 3.3 nmol / L, the detection linear range is 10 nmol / L-80 [mu] mol / L, and the application range of the H2O2 sensor is fully expanded; meanwhile,the sensor has relatively strong anti-interference performance on dopamine, ascorbic acid and uric acid, and can be applied to detection of actual biological samples.

Description

technical field [0001] The invention relates to a simple and convenient preparation method for a transparent electrode of an ultra-low concentration hydrogen peroxide sensor, belonging to the technical field of chemical sensors. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) is an important intermediate in biomedicine and chemical industry, and has important application value in the fields of clinical medicine, environment and food testing; in biology, hydrogen peroxide is also a Important indicators of serious diseases. Therefore, accurate determination of low concentration H 2 o 2 has important practical significance. In recent years, chemiluminescence, spectroscopy, chromatography, and enzymatic chemical methods have been widely used in the effective detection of hydrogen peroxide; however, these detection methods involve complex equipment and cumbersome detection processes, while the detection limit and detection linearity are limited. Limit H 2 o 2 E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/416
CPCG01N27/308G01N27/4163
Inventor 侯士峰李宁
Owner SHANDONG UNIV
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