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A kind of method for purifying and doping modification of tin anode slime to prepare CO sensitive material

A technology for tin anode slime and sensitive materials, which is applied in the fields of material resistance, material analysis, material analysis by electromagnetic means, etc., can solve the problems of increased cost, low production efficiency and complex process of enterprises, and achieves resource saving, low cost, Good particle dispersion

Active Publication Date: 2022-05-13
深圳爱多科传感技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at problems such as increased enterprise cost and serious waste of resources caused by the tin anode slime produced in the tin electroplating process, and the current nano SnO 2 The preparation process has problems such as complex process and low production efficiency. A technology for comprehensive utilization of tin anode slime is proposed. In the present invention, the recovery of the tin element in tin anode slime is studied, and tin dioxide-based sensitive materials are prepared. , for carbon monoxide detection

Method used

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  • A kind of method for purifying and doping modification of tin anode slime to prepare CO sensitive material
  • A kind of method for purifying and doping modification of tin anode slime to prepare CO sensitive material
  • A kind of method for purifying and doping modification of tin anode slime to prepare CO sensitive material

Examples

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Embodiment 1

[0042] (1) Tin anode slime doped with Y 2 o 3 and In 2 o 3 Preparation of CO sensitive materials by modification.

[0043] The tin anode slime is doped with Y 2 o 3 and In 2 o 3 Modified into tin anode slime, purified and doped with Y 2 o 3 and In 2 o 3 Preparation Y 2 o 3 and In 2 o 3 Co-doped SnO 2 porous nanoparticles.

[0044] Take 5g of raw tin anode slime, wash with deionized water and ethanol three times each, and then dry in air at 60°C for 12h. Add 2g of dry tin anode slime, 8ml of concentrated nitric acid, and 6ml of hydrogen peroxide into 30ml of deionized water, stir magnetically at room temperature for 2 hours, separate solid from liquid, wash with deionized water and ethanol three times, and dry in vacuum at 60°C for 12 hours to obtain nano-tin dioxide Particles; 1g nanometer tin dioxide particles, 0.03g yttrium nitrate (Y(NO 3 ) 3 ), 0.02g indium nitrate (In(NO 3 ) 3 ), 0.1g of citric acid were added to 20ml of deionized water, and magnetica...

Embodiment 2

[0048] (1) Tin anode slime doped with Y 2 o 3 and In 2 o 3 Preparation of CO sensitive materials by modification.

[0049] Take 5g of raw tin anode slime, wash with deionized water and ethanol three times each, and then dry in air at 60°C for 12h. Add 2g of dry tin anode slime, 10ml of concentrated nitric acid, and 6ml of hydrogen peroxide into 30ml of deionized water, stir magnetically for 2 hours at room temperature, separate the solid from the liquid, wash with deionized water and ethanol three times, and dry in vacuum at 60°C for 12 hours to obtain nano-tin dioxide Particles; 1g nanometer tin dioxide particles, 0.03g yttrium nitrate (Y(NO 3 ) 3 ), 0.02g indium nitrate (In(NO 3 ) 3 ), 0.1g of citric acid were added to 20ml of deionized water, and magnetically stirred at room temperature for 15min until yttrium nitrate, indium nitrate and citric acid were completely dissolved, then slowly added 2mol / L of ammonia water at a rate of 1ml / min with a constant pressure drop...

Embodiment 3

[0053] (1) Tin anode slime doped with Y 2 o 3 and In 2 o 3 Preparation of CO sensitive materials by modification.

[0054]Take 5g of raw tin anode slime, wash with deionized water and ethanol three times each, and dry in air at 60°C for 12h. Add 2g of dry tin anode slime, 12ml of concentrated nitric acid, and 6ml of hydrogen peroxide into 30ml of deionized water, stir magnetically for 2 hours at room temperature, separate the solid from the liquid, wash with deionized water and ethanol three times, and dry in vacuum at 60°C for 12 hours to obtain nano-tin dioxide Particles; 1g nanometer tin dioxide particles, 0.03g yttrium nitrate (Y(NO 3 ) 3 ), 0.02g indium nitrate (In(NO 3 ) 3 ), 0.1g of citric acid were added to 20ml of deionized water, and magnetically stirred at room temperature for 15min until yttrium nitrate, indium nitrate and citric acid were completely dissolved, then slowly added 2mol / L of ammonia water at a rate of 1ml / min with a constant pressure dropping f...

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Abstract

The invention discloses a method for preparing a CO sensitive material by purifying tin anode slime and doping and modifying, and belongs to the technical field of semiconductor gas sensors and environmental monitoring. The invention aims at the problems of increased enterprise cost and serious waste of resources caused by the tin anode slime produced in the tin electroplating process, purifies and oxidizes the tin anode slime, and successfully recycles the nano tin dioxide material. On this basis, it was doped with yttrium oxide and indium oxide to prepare a CO sensitive material. The prepared CO sensitive material shows a high response value to CO, and at the same time, the prepared material also has good stability and selectivity to CO, which can realize effective monitoring of CO harmful gas. The invention successfully realizes the comprehensive utilization of resources during material preparation, reduces enterprise costs while saving tin resources, conforms to the development concept of resource saving and environment friendliness, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of metal oxide semiconductor gas sensors and environmental monitoring, and in particular relates to a method for preparing a CO sensitive material by purifying tin anode slime and doping and modifying it. Background technique [0002] In recent years, with the rapid development of the world's industry, the industry's demand for various resources is also increasing. At the same time, the waste of resources and environmental pollution caused by this development are becoming more and more serious. Tin is one of the most scarce mineral resources in the world. As of 2016, the world's tin resource reserves were only 4.7 million tons, which was only 50% of the tin resource reserves in 1999. According to the annual consumption of 280,000 tons of tin resources in the world, the current reserves of tin resources can only be used for the next 17 years. What's more serious is that due to the low reserve-production rati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02G01N27/12
CPCC01G19/02G01N27/125C01P2004/82
Inventor 尹远洪梅小敏
Owner 深圳爱多科传感技术有限公司