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Nanometer zirconia base acetone sensitive material

A zirconia-based acetone, sensitive material technology, applied in the direction of chemical reaction of materials for analysis, chemiluminescence/bioluminescence, etc., can solve problems such as interference, and achieve improved selectivity, real-time monitoring is beneficial, and response speed is fast. Effect

Inactive Publication Date: 2008-09-17
GUANGZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The inventor's previous invention patent application "Novel nano-strontium carbonate-based acetone sensitive material" (patent application number: 200610122902.8) provides a catalytic material that can make acetone vapor emit light. The material consists of 1 part of strontium carbonate and 0.02 to 1 It is composed of dysprosium oxide, which shows good selectivity to acetone gas, and the coexisting gases such as formaldehyde, benzene, chloroform, etc. in the general environment will not cause interference. The prepared acetone vapor sensor has greatly improved the selectivity to acetone on the basis of ensuring high sensitivity and fast response speed, but there is still 15% interference from ethanol vapor that may usually coexist

Method used

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  • Nanometer zirconia base acetone sensitive material
  • Nanometer zirconia base acetone sensitive material
  • Nanometer zirconia base acetone sensitive material

Examples

Experimental program
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Effect test

example 1

[0023] Take 20mL 0.1mol / LZr(NO 3 ) 4 ·3H 2 O, add 4mL Tween-80, and stir evenly in a sonicator. Add 20mL of 3mol / L ammonia water dropwise to form a precipitate. After precipitation, centrifuge for about 20 minutes, then dry in an oven at 110°C for 2 hours, then heat-treat at 600°C in an aerobic atmosphere for 3 hours, take it out and cool it, and grind it thoroughly to get zirconia nanopowder.

[0024] Weigh 1 part of zirconia nanopowder and 0.117 part of erbium oxide powder, put them in a container, add distilled water to stir into a thin paste, mix well, put them in a drying oven at 110°C for 2 hours, and place them in a muffle furnace Treat at 600°C for 3 hours, take it out and cool it down and grind it thoroughly. During heat treatment in the muffle furnace, do not close the door of the muffle furnace, and leave a gap in the door to ensure that there is sufficient oxygen in the furnace to remove residual organic matter in the material.

example 2

[0026] Take 20mL 0.1mol / LZr(NO 3 ) 4 ·3H 2 O, add 4mL Tween-80, and stir evenly in a sonicator. Add 20mL of 3mol / L ammonia water dropwise to form a precipitate. After precipitation, centrifuge for about 20 minutes, then dry in an oven at 110°C for 2 hours, then heat-treat at 600°C in an aerobic atmosphere for 3 hours, take it out and cool it, and grind it thoroughly to get zirconia nanopowder.

[0027] Weigh 1 part of zirconia nanopowder and 1.55 parts of erbium oxide powder, put them in a container, add distilled water and stir into a thin paste, mix well and put them in a drying oven at 110°C for 2 hours, then dry in an aerobic atmosphere Heat treatment in a muffle furnace at 550°C for 3 hours, take it out and cool it down and grind it thoroughly. During heat treatment in the muffle furnace, do not close the door of the muffle furnace, and leave a gap in the door to ensure that there is sufficient oxygen in the furnace to remove residual organic matter in the material. ...

example 3

[0029] Take 20mL 0.1mol / LZr(NO 3 ) 4 ·3H 2 O, add 4mL Tween-80, and stir evenly in a sonicator. Add 20mL of 3mol / L ammonia water dropwise to form a precipitate. After precipitation, centrifuge for about 20 minutes, then dry in an oven at 110°C for 2 hours, then heat-treat at 600°C in an aerobic atmosphere for 3 hours, take it out and cool it, and grind it thoroughly to get zirconia nanopowder.

[0030] Weigh 1 part of zirconia nanopowder and 0.02 part of dysprosium oxide powder, put them in a container, add distilled water to stir into a thin paste, mix well, put them in a drying oven at 110°C for 2 hours, and put them in a muffle furnace Treat at 650°C for 2 hours, take it out and cool it, then grind it thoroughly. During heat treatment in the muffle furnace, do not close the door of the muffle furnace, and leave a gap in the door to ensure that there is sufficient oxygen in the furnace to remove residual organic matter in the material.

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Abstract

The invention provides a new nm zirconium oxide basis acetone sensitized material obtained by the following steps: mixing the 1 part by weight of zirconia nm power and 0.02-1.55 parts by weight of erbium; adding distilled water to stir into thin paste; intensively and uniformly mixing the mixture; drying at 110degree for 2 hours; heating at 550-650 degree at oxygen atmosphere for 2-3 hours; cooling; finally adequately grinding. The new nm zirconium oxide basis acetone sensitized material can be used for producing the sensor for detecting the acetone with excellent selectivity and sensitivity to the acetone gas with no interference of the circumstance coexisting gas such as ethanol, formaldehyde and the like, and the detection limit can be obtain 0.40ppm.

Description

technical field [0001] The invention relates to testing or analyzing materials by means of determining their chemical or physical properties, in particular to a nanometer zirconia-based sensitive material that emits light by means of acetone vapor. Background technique [0002] Gaseous acetone belongs to the fourth grade of occupational exposure to poison hazard classification (GB 5044-85) slightly harmful pollutants, and has damage to the nervous system. Acetone vapor is produced primarily in manufacturing plants and painting operations, but also inside machinery fueled by petroleum products and may also be present during the burning of wood, plastics; acetone has also been detected in many plants and foods ; In terms of biomedicine, it is known that the acetone content in the exhaled breath of diabetic patients is higher than that of normal people, and its determination can be used as the basis for diagnosing diseases. Therefore, it is of great significance to be able to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/76
Inventor 曹小安吴伟芳温珠花吴翠琴陈紫慧黄燕屏黄翠娴吴嘉玲陈烨江洁颖郑慧
Owner GUANGZHOU UNIVERSITY
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