Method for degrading organic dye through catalyzing visible light by using three-way doped catalyst
A technology of organic dyes and catalysts, which is applied in the field of organic dyes in water degradation, can solve the problems of unavailable materials, low catalytic activity of visible light, and difficulty in using organic fuel pollutants, etc., and achieves the effect of simple preparation method and environmental friendliness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] (1) TiO 2 -SiO 2 -SiW 12 o 40 4- Catalyst preparation
[0021] Add 6.5 g of ethyl orthosilicate dropwise into a mixed solution of 15 mL of concentrated hydrochloric acid and 78 mL of deionized water, and stir in a water bath at 50°C for 48 hours to obtain a colorless colloid; add 9.2 mL of titanium tetraisopropoxide dropwise into 60 mL of Slowly add 1.2 mL of hydrochloric acid solution with 0.6 g of silicotungstic acid dissolved in isopropanol and pH 2, adjust the pH to 1 - 2 with concentrated hydrochloric acid solution, and stir at room temperature for 2 hours to obtain a clear and transparent colloid. The two colloids were ultrasonically mixed for 1 hour to obtain a homogeneous colloid, which was calcined according to the following temperature programming method: from room temperature to 200 °C at a rate of 2 °C / min, and kept at the final temperature for 1 hour. Obtain white solid, i.e. target catalyst 1, the molar ratio of three kinds of oxides in the cata...
Embodiment 2
[0025] (1) TiO 2 -SiO 2 -SiW 12 o 40 4- Catalyst preparation
[0026] Add 8.5 g tetraethyl orthosilicate dropwise to a mixed solution of 20 mL concentrated hydrochloric acid and 104 mL deionized water, stir in a water bath at 40°C for 24 hours to obtain a colorless colloid; add 6.1 mL titanium tetraisopropoxide dropwise to 30 mL Slowly add 0.8 mL of hydrochloric acid solution with 0.4 g of silicotungstic acid dissolved in isopropanol and pH 1, adjust the pH to 1-2 with concentrated hydrochloric acid solution, and stir at room temperature for 1 hour to obtain a clear and transparent colloid. The two colloids were ultrasonically mixed for 2 hours to obtain a homogeneous colloid, which was calcined according to the following temperature programming method: from room temperature to 200 °C at a rate of 2 °C / min, and kept at the final temperature for 1 hour. Obtain white solid, i.e. target catalyst 2, the molar ratio of three kinds of oxides in the catalyst is 1: 2: 0.007.
...
Embodiment 3
[0031] (1) TiO 2 -SiO 2 -SiW 12 o 40 4- Catalyst preparation
[0032]Add 2.1 g ethyl orthosilicate dropwise to a mixed solution of 5 mL concentrated hydrochloric acid and 26 mL deionized water, and stir in a water bath at 40°C for 24 hours to obtain a colorless colloid; add 6.1 mL titanium tetraisopropoxide dropwise to 30 mL Slowly add 0.4 g of silicotungstic acid and 0.8 mL of hydrochloric acid solution with a pH value of 1 to isopropanol, adjust the pH value to 1-2 with concentrated hydrochloric acid solution, and stir at room temperature for 1 hour to obtain a clear transparent colloid. The two colloids were ultrasonically mixed for 2 hours to obtain a homogeneous colloid, which was calcined according to the following temperature programming method: from room temperature to 350 °C at a rate of 5 °C / min, and kept at the final temperature for 3 hours. Obtain a white solid, namely the target catalyst 3, and the molar ratio of the three oxides in the catalyst is 1: 0.5: 0....
PUM
| Property | Measurement | Unit |
|---|---|---|
| wavelength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More