Photocatalytic composite material based on fly ash hollow microspheres and preparation method thereof
A hollow microsphere and composite material technology, applied in the field of photocatalytic materials, can solve problems such as numerous steps and complicated operations, and achieve the effects of high photocatalytic activity, short preparation process and effective treatment.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] Measure 15mL of absolute ethanol into a 100mL beaker, add 1.8mL of tetrabutyl titanate dropwise and stir for 15min, then add 30mL of hydrochloric acid with a weight concentration of 37%, and after stirring for 15min, add deionized water dropwise until the total volume of the mixed solution is 60mL.
[0036] Weigh 1.2 g of fly ash hollow microspheres (see the XRD pattern of figure 1 ), added to the above mixed solution, then transferred to a 100 mL hydrothermal reactor, heated to 180 °C and kept for 8 h. The product was cooled to room temperature, and then filtered with suction, washed with ethanol, washed with deionized water, and dried at 50 °C for 15 h to obtain TiO grown on the surface of fly ash hollow microspheres. 2 Nanorods, XRD test shows TiO 2 The crystal form of the nanorods is rutile (see figure 2 ), SEM images show TiO 2 The nanorods are 0.5–1 μm in length and less than 100 nm in diameter (see image 3 ).
Embodiment 2
[0038] Measure 12mL of anhydrous ethanol into a 100mL beaker, add 1.8mL of titanium tetrachloride dropwise and stir for 15min, then add 30mL of hydrochloric acid with a weight concentration of 37%, and after stirring for 15min, add deionized water dropwise until the total volume of the mixed solution is 60mL.
[0039] Weigh 1.2 g of fly ash hollow microspheres (same as Example 1), add it to the above mixed solution, then transfer it to a 100 mL hydrothermal reaction kettle, heat it to 210 °C and keep it for 4 h. The product was cooled to room temperature, and then filtered, washed with ethanol, washed with deionized water, and dried at 80 °C for 6 h to obtain TiO grown on the surface of fly ash hollow microspheres. 2 Nano stave. SEM photo showing TiO 2 The length of the nanorods is 1-1.5 μm and the diameter is less than 100 nm (see Figure 4 ).
Embodiment 3
[0041] In the same method as Example 1, the difference is that 21 mL of concentrated nitric acid with a weight concentration of 65% is used to replace the concentrated hydrochloric acid with a weight concentration of 37% to obtain fly ash hollow microsphere surface growth TiO. 2 The length of the nanorods is 1-1.3 μm.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More