Hydrogen sensor and preparation method thereof

A sensor and hydrogen technology, applied in the field of hydrogen sensors, can solve the problems of poor recovery performance of titanium dioxide sensors, increased response time and recovery time, complex porous structure manufacturing methods, etc., to achieve a wide range of hydrogen concentration, fast response and recovery, and preparation method easy effect

Inactive Publication Date: 2017-10-24
ZHENGZHOU UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

The current research on titanium dioxide for hydrogen detection, not only the preparation method of the porous structure of titanium dioxide is complex, there are many doping substances, but also the detection of the sensor is mostly in the environment of high tempera

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  • Hydrogen sensor and preparation method thereof
  • Hydrogen sensor and preparation method thereof

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preparation example Construction

[0032] The preparation method of the hydrogen sensor provided by the present invention comprises the following steps:

[0033] S1, respectively weighing predetermined masses of titanium dioxide and indium oxide, and mixing the two;

[0034] Predetermined masses of titanium dioxide and indium oxide are weighed respectively, and then the titanium dioxide and indium oxide are mixed. The mass of the above-mentioned indium oxide accounts for 0-20% of the total mass of the two. In the present invention, the titanium dioxide may be anatase phase titanium dioxide or rutile phase titanium dioxide, or may be a mixed phase of anatase phase titanium dioxide and rutile phase titanium dioxide.

[0035] Before performing step S1, an annealing step of the titanium dioxide and the indium oxide may also be included. Specifically, the titanium dioxide was kept at a temperature of 450° C. for 1 hour and then cooled naturally. The indium oxide was kept at 600° C. for 1 hour and then cooled natu...

Embodiment 1

[0047] First, titanium dioxide is mixed with nanometer indium oxide, wherein the titanium dioxide is titanium dioxide in anatase phase, and the indium oxide accounts for 10% of the total mass of the titanium dioxide and the indium oxide. The configured titanium dioxide and indium oxide are placed in an agate ball mill jar for ball milling, the speed of the agate ball mill jar is 300r / min, and the milling time is 6h;

[0048] Then weigh 1 g of the powder of titanium dioxide and indium oxide after ball milling, place it in a tableting mold, and then use a tableting machine to press under a pressure of 10Gpa for 5 minutes to form a tablet;

[0049] Then heat-treat the compressed tablet, first raising the temperature to 100°C for 2 hours, then raising the temperature to 600°C for 4 hours;

[0050] A layer of Pt electrodes was sputtered on the surface of the heat-treated sheet, wherein the number of the Pt electrodes was two, and the distance between the two Pt electrodes was 5 mm,...

Embodiment 2

[0053] First, titanium dioxide is mixed with nanometer indium oxide, wherein the titanium dioxide is titanium dioxide in a rutile phase, and the indium oxide accounts for 10% of the total mass of the titanium dioxide and the indium oxide. The configured titanium dioxide and indium oxide are placed in an agate ball mill jar for ball milling, the speed of the agate ball mill jar is 400r / min, and the milling time is 4h;

[0054] Then weigh 1 g of the powder of titanium dioxide and indium oxide after ball milling, place it in a tableting mold, and then use a tableting machine to press for 7 minutes under a pressure of 8 Gpa to form a tablet;

[0055] Then heat-treat the compressed tablet, first raising the temperature to 150°C for 1 hour, then raising the temperature to 400°C for 4 hours;

[0056] A layer of Pt electrodes was sputtered on the surface of the heat-treated sheet, wherein the number of the Pt electrodes was two, and the distance between the two Pt electrodes was 5 mm,...

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Abstract

The invention provides a preparation method of a hydrogen sensor. The preparation method comprises the following steps: (S1) respectively weighing a preset mass of titanium dioxide and a preset mass of indium oxide, and mixing titanium dioxide with indium oxide; (S2) carrying out ball milling on a mixture of weighed titanium dioxide and indium oxide in the step (S1), so as to obtain uniformly mixed powder of titanium dioxide and indium oxide; (S3) after the ball milling, weighing a preset mass of the powder, and carrying out tabletting formation; (S4) after the tabletting formation, carrying out thermal treatment on a tablet at 400-800 DEG C for 2-4 hours; and (S5) producing an electrode from the tablet which is subjected to a thermal treatment process, so as to obtain the hydrogen sensor. The preparation method of the hydrogen sensor is easy to implement, titanium dioxide and indium oxide are common nano-particles, and the raw material sources are wide. The invention further provides the hydrogen sensor.

Description

technical field [0001] The present invention relates to the technical field of hydrogen sensors, in particular to a hydrogen sensor and a method for preparing the hydrogen sensor. Background technique [0002] Since the beginning of the new century, the world's energy consumption has increased sharply, making the original resources such as oil and coal mines increasingly exhausted, and with the strengthening of people's awareness of environmental protection, these energy sources that pollute the environment are becoming less and less acceptable, and various alternative energy sources will inevitably appear. . As a kind of new energy, hydrogen has the advantages of combustion product is water, no pollution; large heat of combustion, high heat release; wide range of sources, renewable and so on. Currently, the amount of hydrogen in the international market is very large, and it is more than 8% per year. rate growth. However, hydrogen is prone to explosion and storage is very...

Claims

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Application Information

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IPC IPC(8): G01N27/12
CPCG01N27/12
Inventor 范佳杰黄浩仝可蒙马梦君翟进生范向伟邵国胜
Owner ZHENGZHOU UNIV
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