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A based on au doping in 2 o 3 Nanosphere xanthate gas gas sensor and preparation method thereof

A technology of gas sensor and nanosphere, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for sensing, can solve the problem of lack of xanthate gas detection means in flotation workshops, and achieve low cost, high sensitivity, The effect of good stability

Active Publication Date: 2020-12-25
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the lack of effective detection means of xanthate gas in the flotation workshop of the current mineral processing plant, the present invention provides a method based on Au-doped In 2 o 3 Nanosphere xanthate gas gas sensor and preparation method thereof

Method used

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  • A based on au doping in <sub>2</sub> o <sub>3</sub> Nanosphere xanthate gas gas sensor and preparation method thereof
  • A based on au doping in <sub>2</sub> o <sub>3</sub> Nanosphere xanthate gas gas sensor and preparation method thereof
  • A based on au doping in <sub>2</sub> o <sub>3</sub> Nanosphere xanthate gas gas sensor and preparation method thereof

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Embodiment 1

[0035] The Au-doped In-based 2 o 3 Nanosphere xanthate gas gas sensor, its structure schematic diagram is as follows image 3 As shown, it includes a ceramic tube 1, a gas-sensitive coating 2, a heating resistance wire 3, a gold film 4, a platinum lead 5 and a hexagonal base 6, wherein the gold film 4 covers both ends of the ceramic tube 1 to make a ceramic tube electrode, The gas-sensitive coating 2 is uniformly coated on the entire surface of the ceramic tube 1 and the gold film 4, the heating resistance wire 3 traverses in the ceramic tube 1, and is welded on the heating electrode of the hexagonal base 6; one end of the platinum lead 4 is welded on the The surface of the gold film 4, the other end is welded on the four measuring electrodes of the hexagonal base 6 and made based on Au-doped In 2 o 3 Nanosphere-based xanthate gas gas sensor. The raw material of the gas-sensitive coating 2 is Au doped with In 2 o 3 nanospheres, the Au doped with In 2 o 3 The shape of t...

Embodiment 2

[0048] The Au-doped In-based 2 o 3 Nanosphere xanthate gas gas sensor, its structure schematic diagram is as follows image 3 As shown, it includes a ceramic tube 1, a gas-sensitive coating 2, a heating resistance wire 3, a gold film 4, a platinum lead 5 and a hexagonal base 6, wherein the gold film 4 covers both ends of the ceramic tube 1 to form a ceramic tube electrode, and the gas Sensitive coating 2 is evenly coated on the surface of the entire ceramic tube 1 and gold film 4, and the heating resistance wire 3 traverses in the ceramic tube 1 and is welded on the heating electrode of the hexagonal base 6; one end of the platinum wire 4 is welded on the gold The surface of the film 4, the other end is welded on the four measuring electrodes of the hexagonal base 6, which is made based on Au-doped In 2 o 3 Nanosphere-based xanthate gas gas sensor. The raw material of the gas-sensitive coating 2 is Au doped with In 2 o 3 nanospheres, the Au doped with In 2 o 3 The shap...

Embodiment 3

[0061] The Au-doped In-based 2 o 3 Nanosphere xanthate gas gas sensor, its structure schematic diagram is as follows image 3 As shown, it includes a ceramic tube 1, a gas-sensitive coating 2, a heating resistance wire 3, a gold film 4, a platinum lead 5 and a hexagonal base 6, wherein the gold film 4 covers both ends of the ceramic tube 1 to form a ceramic tube electrode, and the gas Sensitive coating 2 is evenly coated on the surface of the entire ceramic tube 1 and gold film 4, and the heating resistance wire 3 traverses in the ceramic tube 1 and is welded on the heating electrode of the hexagonal base 6; one end of the platinum wire 4 is welded on the gold The surface of the film 4, the other end is welded on the four measuring electrodes of the hexagonal base 6, which is made based on Au-doped In 2 o 3 Nanosphere-based xanthate gas gas sensor. The raw material of the gas-sensitive coating 2 is Au doped with In 2 o 3 nanospheres, the Au doped with In 2 o 3 The shap...

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Abstract

The invention discloses a method based on Au-doped In 2 O 3 A nanosphere xanthate gas sensor and a preparation method thereof belong to the field of gas sensors of metal oxide semiconductor materials. The invention uses indium nitrate as the indium source, chloroauric acid as the gold source, and uses a hydrothermal method to prepare Au-doped In with a hexagonal phase crystal structure and a diameter of 75 to 125 nm. 2 O 3 Nanospheres. The prepared Au is doped with In 2 O 3 The nanospheres are dispersed in an ethanol solution to prepare a gas-sensitive slurry, which is then evenly coated on the surface of the electrode element to prepare a gas-sensitive element. Au doped In according to the present invention 2 O 3 The synthesis method of nanospheres is simple, low-cost, pollution-free, and has a stable structure. The gas sensor of the present invention has high sensitivity, good response and recovery characteristics, and good response reversibility, repeatability and stability. It can fill the gap in the current market for quantitative detection of this type of gas and is useful for ensuring mineral processing plants. The life, health and safety of workers in the flotation workshop are of great significance.

Description

technical field [0001] The invention belongs to the field of metal oxide semiconductor gas sensors, in particular to a sensor based on Au-doped In 2 o 3 Nanosphere xanthate gas gas sensor and its preparation method. Background technique [0002] In the process of comprehensive utilization of mineral resources, the useful elements in the ore must first be enriched. Common sorting methods include gravity separation, magnetic separation, flotation and so on. Among them, flotation is a widely used ore separation method. Its basic principle is to use the differences in the physical and chemical properties of the surface of different minerals to selectively attach to the air bubbles in the pulp and float to the pulp with the bubbles. surface, thereby separating useful minerals from gangue. During the flotation operation, in order to control the physical and chemical properties of the ore surface and the properties of the pulp, certain flotation agents must be added to the pulp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/12B82Y15/00B82Y35/00
CPCB82Y15/00B82Y35/00G01N27/127
Inventor 沈岩柏赵思凯钟祥熙翁绍涵韩聪方萍魏德洲
Owner NORTHEASTERN UNIV LIAONING