Ppb-grade NO2 gas sheet type sensor and preparation method thereof
A sensor and gas technology, applied in the field of NO2 sensor, can solve the problem of not being able to fully meet the environmental detection, and achieve the effect of simple structure, easy integration, and improved sensitivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] (a) Preparation of hard template SBA-15
[0029] ⅰ) 4g P123(EO 20 PO 70 EO 20 ) dissolved in 120g HCl+30g H with a concentration of 2mol / L 2 In the solution of O, stir for 30min until P123 is completely dissolved;
[0030] ii) Put the solution in i) into a water bath, when the temperature reaches 40°C, add 7.52g tetraethyl orthosilicate (TEOS) dropwise, and stir at 40°C for 24h;
[0031] iii) Transfer the solution in ii) to the reactor, react at 100°C for 12h, filter, wash, and dry at 80°C for 12h;
[0032] ⅳ) Put the dried powder in a muffle furnace and burn at 550°C for 6 hours to obtain SBA-15;
[0033] (b) Mesoporous WO 3 Synthesis
[0034] i) 1.75g of silicotungstic acid is dissolved in 5g of ethanol;
[0035] ii) Add 1g of SBA-15 to 5g of the silicotungstic acid solution obtained in i), and ultrasonicate for 10min to expel the air bubbles in the SBA-15 channel;
[0036] iii) Stir the solution obtained in ii) at room temperature for 12h, dry at 80°C for ...
Embodiment 2
[0044] (a) Preparation of hard template SBA-15
[0045] ⅰ) 32g P123(EO 20 PO 70 EO 20 ) dissolved in 960g HCl+240g H with a concentration of 2mol / L 2 In the solution of O, stir for 60 minutes until P123 is completely dissolved;
[0046] ii) Put the solution in i) into a water bath, and when the temperature reaches 40°C, add 60.16g of tetraethyl orthosilicate (TEOS) dropwise, and stir at 40°C for 48h;
[0047] iii) Transfer the solution in ii) to the reactor, react at 100°C for 24h, filter, wash, and dry at 80°C for 24h;
[0048] ⅳ) Put the dried powder in a muffle furnace and burn at 550°C for 10 hours to obtain SBA-15;
[0049] (b) Mesoporous WO 3 Synthesis
[0050] i) 14g of silicotungstic acid is dissolved in 40g of ethanol;
[0051] ii) Add 8g of SBA-15 to 40g of the silicotungstic acid solution obtained in i), and ultrasonicate for 30 minutes to discharge the bubbles in the SBA-15 channel;
[0052] iii) Stir the solution obtained in ii) at room temperature for 24h,...
Embodiment 3
[0059] (a) Preparation of hard template SBA-15
[0060] i) 16g P123(EO 20 PO 70 EO 20 ) dissolved in 480g HCl+120g H with a concentration of 2mol / L 2 In the solution of O, stir for 50min until P123 is completely dissolved;
[0061] ii) Put the solution in i) into a water bath, and when the temperature reaches 40°C, add 30.08g of tetraethyl orthosilicate (TEOS) dropwise, and stir at 40°C for 40h;
[0062] iii) Transfer the solution in ii) to the reactor, react at 100°C for 20h, filter, wash, and dry at 80°C for 20h;
[0063] ⅳ) Put the dried powder in a muffle furnace and burn at 550°C for 9 hours to obtain SBA-15;
[0064] (b) Mesoporous WO 3 Synthesis
[0065] ⅰ) 7g silicotungstic acid is dissolved in 20g ethanol;
[0066] ii) Add 4g of SBA-15 to 20g of the silicotungstic acid solution obtained in i), and ultrasonicate for 25 minutes to discharge the bubbles in the SBA-15 channel;
[0067] iii) Stir the solution obtained in ii) at room temperature for 20 hours, dry a...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
