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Cataluminescence sensitive material for rapid determination of formaldehyde and sulfur dioxide

A sulfur dioxide, sensitive material technology, applied in chemiluminescence/bioluminescence, analysis by chemical reaction of materials, etc., can solve problems such as inability to implement on-site and complicated operation

Inactive Publication Date: 2016-04-27
BEIJING UNION UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have relatively high sensitivity, but the operation is complicated and must be completed in the laboratory, which cannot be realized on site.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Aluminum acetate dihydrate is dissolved in 12% hydrochloric acid aqueous solution to form solution A, calcium chloride dihydrate is dissolved in 35% malic acid aqueous solution to form solution B, and indium nitrate trihydrate is dissolved in Solution C is formed in 44% isobutanol aqueous solution; under continuous stirring, solution A and solution B are slowly added to solution C in turn, after stirring for 2 hours, add a small amount of agar powder and continue to stir to form a gel; the gel After drying, heat up to 230°C at a rate of no more than 3°C per minute in a box-type resistance furnace, keep this temperature for 5 hours, continue to heat up to 490°C at a rate of no more than 3°C per minute, and keep this temperature for 2 hours , naturally cooled to room temperature to obtain the Al 2 o 3 , CaO and In 2 o 3 Composite powder formed; under continuous stirring, add this composite powder into glucose aqueous solution with a mass fraction of 15%, heat up to 41°...

Embodiment 2

[0016] Aluminum nitrate nonahydrate is dissolved in 15% hydrochloric acid aqueous solution to form solution A, calcium acetate monohydrate is dissolved in 38% malic acid aqueous solution to form solution B, and indium sulfate pentahydrate is dissolved in mass fraction of Solution C is formed in 42% isobutanol aqueous solution; under continuous stirring, solution A and solution B are slowly added to solution C in turn, after stirring for 3 hours, add a small amount of agar powder and continue stirring to form a gel; bake the gel After drying, heat up to 225°C at a rate of no more than 3°C per minute in a box-type resistance furnace, keep this temperature for 4 hours, continue to raise the temperature to 495°C at a rate of no more than 3°C per minute, and keep this temperature for 3 hours. naturally cooled to room temperature to obtain the Al 2 o 3 , CaO and In 2 o 3 Composite powder formed; under continuous stirring, add this composite powder into glucose aqueous solution wi...

Embodiment 3

[0020]Aluminum sulfate octadecadecahydrate is dissolved in 16% hydrochloric acid aqueous solution to form solution A, calcium nitrate tetrahydrate is dissolved in 32% malic acid aqueous solution to form solution B, and indium acetate is dissolved in 45% aqueous solution. % isobutanol aqueous solution to form solution C; under continuous stirring, slowly add solution A and solution B to solution C in turn, after stirring for 3 hours, add a small amount of agar powder and continue stirring to form a gel; dry the gel Finally, heat up to 235°C at a rate of no more than 3°C per minute in a box-type resistance furnace, keep this temperature for 4 hours, continue to raise the temperature to 485°C at a rate of no more than 3°C per minute, and keep this temperature for 2 hours, naturally cooled to room temperature to obtain Al 2 o 3 , CaO and In 2 o 3 Composite powder formed; under continuous stirring, add this composite powder into glucose aqueous solution with a mass fraction of 1...

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PUM

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Abstract

A cataluminescence sensitive material for rapid determination of formaldehyde and sulfur dioxide is a composite material comprising platinum-atom-doped Al2O3, CaO and In2O3. A preparation method is as follows: aluminum acetate, calcium chloride and indium nitrate solution are prepared into a solution, a small amount of agar is added to form a gel, the gel is dried and calcined to obtain composite powder comprising Al2O3, CaO and In2O3, the composite powder and chloroplatinic acid are added into an aqueous solution of glucose, and the composite material comprising Pt-atom-doped Al2O3, CaO and In2O3 can be obatiend by xenon lamp irradiation, filtration, water washing and drying. The sensitive material is used for making a gas sensor, and trace amounts of formaldehyde and sulfur dioxide in the air can be quickly and accurately determined in the field without common coexistent matter interference.

Description

technical field [0001] The invention relates to a catalytic luminescence sensitive material for rapid determination of formaldehyde and sulfur dioxide, especially Al doped with platinum atoms 2 o 3 , CaO and In 2 o 3 The composite material of the composition belongs to the technical field of catalytic new materials. Background technique [0002] Formaldehyde is a colorless and volatile chemical raw material. It is widely used as an adhesive raw material, disinfectant, preservative and finishing agent in products such as compressed boards, coatings, paints, cosmetics and packaging materials. are continuously released into the air. People have different reactions to various concentrations of formaldehyde in the air: when the concentration of formaldehyde in the air reaches 0.08mg / m 3 Children will have mild asthma when it reaches 0.1mg / m 3 There is a sense of peculiar smell when it reaches 0.6mg / m 3 It can cause throat discomfort or pain when it reaches 1mg / m 3 Sometim...

Claims

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Application Information

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IPC IPC(8): G01N21/76
CPCG01N21/76
Inventor 周考文范慧珍刘白宁
Owner BEIJING UNION UNIVERSITY
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