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TiO2 nano tube array room temperature hydrogen sensor covered by Pt electrode on surface

A nanotube array, surface covering technology, applied in the direction of material resistance, can solve the problems of limited application range, high working temperature, low sensitivity, etc., and achieve the effect of fast response speed, low cost and high sensitivity

Active Publication Date: 2013-10-23
山东飞龙农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, such sensors have high operating temperature, low sensitivity, high power consumption, and low safety, which greatly limit their application range.

Method used

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  • TiO2 nano tube array room temperature hydrogen sensor covered by Pt electrode on surface
  • TiO2 nano tube array room temperature hydrogen sensor covered by Pt electrode on surface
  • TiO2 nano tube array room temperature hydrogen sensor covered by Pt electrode on surface

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Embodiment Construction

[0030] The technical solution of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, this embodiment discloses a TiO surface covered with Pt electrodes 2 Nanotube array room temperature hydrogen sensor, its structure includes two rectangular Pt electrodes 1, Ti substrate 2, TiO 2 Nanotube Array3.

[0032] The specific example is

[0033] 1. Preparation of TiO on high-purity industrial Ti foils by direct anodic oxidation 2 Nanotube array:

[0034] 1) According to the above operation steps, cut the Ti piece into a small rectangular piece of 3cm×1cm, and clean it according to the method of operation step 1 after polishing with fine sandpaper;

[0035] 2) Place the cleaned rectangular Ti foil on one side of the multifunctional anodizing device equipped with 0.2wt% ammonium fluoride in ethylene glycol aqueous solution, connect the positive electrode of ...

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Abstract

The invention discloses a room temperature hydrogen sensor, and particularly relates to preparation and performance detection of a TiO2 nano tube array hydrogen sensitive element covered by a Pt electrode on the surface. A preparation method of the hydrogen sensitive element, provided by the invention, comprises the steps of strictly cleaning an appropriately cut high-purity industrial Ti foil and then placing in an ammonium fluoride and ethylene glycol water solution for carrying out anodic oxidation treatment for 3h to prepare a TiO2 nano tube array with the uniform surface and ordered height. The TiO2 nano tube array covered by the Pt electrode on the surface is used as the hydrogen sensitive element, and thus the sensitivity of the sensor is improved, the response speed of the sensor is increased, and the work temperature is lowered.

Description

technical field [0001] The invention relates to a room-temperature hydrogen sensor, in particular to TiO with a surface covered with a Pt electrode in the hydrogen sensor 2 Preparation and performance testing of nanotube array hydrogen sensor. Background technique [0002] Hydrogen is an inexhaustible clean energy. As an ideal new energy source, it has a wide range of applications in chemical, food, electronics and other industrial and agricultural production. In order to ensure the safety of the use, transfer and storage of hydrogen energy in various hydrogen-containing industrial and agricultural production processes, the research and development of hydrogen sensors with good hydrogen sensitivity has become an issue of increasing concern. Metal-oxide-semiconductor (SnO) 2 、WO 3 , ZnO) hydrogen sensor has become a research focus, it is the use of semiconductor hydrogen sensor resistance or conductance changes in the hydrogen atmosphere to detect hydrogen. However, at p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
Inventor 陈侃松谢鲲冯新然胡瑞顾豪爽黎旸
Owner 山东飞龙农业科技有限公司
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