Organic silicon flexible film with Fenton catalytic performance as well as preparation method and application of organic silicon flexible film
A technology with catalytic performance and silicon flexibility, applied in the field of organosilicon material preparation, can solve the problems of easy loss of Fenton catalyst, loss of active components, uneven loading, etc., achieve excellent catalytic degradation performance, reduce losses, and overcome uneven loading Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0030] A first aspect of the present invention provides a method for preparing an organosilicon flexible film with Fenton catalytic properties, comprising the steps of:
[0031] 1) Iron hydrate and silicon tetrachloride are mixed, heated and reacted;
[0032] 2) cooling after the reaction, washing the reaction product until neutral, drying to obtain a powder;
[0033] 3) Add the powder into hydroxyl-terminated polydimethylsiloxane, add a crosslinking agent and a catalyst, and solidify to form a film, that is, a flexible organosilicon film with Fenton's catalytic performance is obtained.
[0034] In one or more embodiments of the present invention, the hydrated iron salt described in step 1) is selected from one or more of ferric chloride hexahydrate, ferric nitrate nonahydrate, ferric sulfate hydrate, and ferric phosphate dihydrate, Ferric chloride hexahydrate is preferred.
[0035] When the hydrated iron salt is ferric chloride hexahydrate, its physical barrier effect with ...
Embodiment 1
[0070] (1) Add 6g of ferric chloride hexahydrate and 15g of silicon tetrachloride into the reaction kettle, seal and react at a temperature of 220°C for 4h;
[0071] (2) After cooling to room temperature, the reaction product was washed with water until neutral, and dried at 60°C for 3 hours to obtain 4.5 g of yellow-gray powder;
[0072] (3) Add 4g of powder as a filler to 20g of hydroxy-terminated polydimethylsiloxane at 3000mPa·s, add 6g of crosslinking agent and 4g of catalyst, and solidify to form a film with a thickness of 0.3mm. Silicone films with Fenton catalytic properties.
[0073] Performance Testing:
[0074] Add 5 mL of Rhodamine B at 40 ppm, 2 mL of 30% hydrogen peroxide, and 20 mL of pure water into the photoreactor, and add a film containing 0.1 g of composite catalyst (powder). Rhodamine B was completely degraded and faded under the irradiation of 250W ultraviolet lamp for 40 minutes, and the catalyst film could be completely filtered out by gauze, and ther...
Embodiment 2
[0078] The difference from Example 1 is that in the step (1), 7.5 g of ferric chloride hexahydrate, 12.6 g of silicon tetrachloride, the reaction temperature is 230° C., and the time is 5 h. All the other experimental conditions were the same as in Example 1.
[0079] Performance Testing:
[0080] 5 mL of Rhodamine B at 40 ppm, 2 mL of 30% hydrogen peroxide, and 20 mL of pure water were added to the photoreactor, and a film containing 0.1 g of catalyst was added. Rhodamine B was completely degraded and faded under the irradiation of 250W ultraviolet lamp for 55 minutes, and the catalyst film could be completely filtered out by gauze, and there was no loss and no deactivation after repeated 11 times.
PUM
| Property | Measurement | Unit |
|---|---|---|
| viscosity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More