Preparation method of nitrogen doped composite semiconductor photocatalyst
A compound semiconductor and photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of unfavorable industrialization, poor thermal stability, long reaction time, etc. Catalytic performance, improved adsorption performance, and low-cost manufacturing effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0019] 3.53g fumed white carbon black (i.e. nano-SiO 2 , particle size less than 10nm) ultrasonically dispersed in 530ml of pure water, adjust the pH value to 2.5 with 36% to 38% hydrochloric acid (analytical grade), slowly add 1000ml of 10% tetra-n-butyl titanate ethanol solution dropwise under vigorous stirring, Then aging and reacting for 3 hours, filtering, the resulting solid was washed with deionized water, and dried in vacuum to obtain hydrated SiO 2 / TiO 2 Powder. 2.0g of the prepared hydrated SiO 2 / TiO 2 Put the powder into a porcelain boat and push it into a high-temperature corundum tube furnace. The two ends of the tube furnace are sealed but there are gas inlet and outlet ports. A mixture of ammonia and argon is introduced from the air inlet, the ratio of ammonia to argon is 2:1, and the flow rate of ammonia is controlled to be 0.1m 3 / h, after the gas flow rate is stable, start heating to 450 ° C, the heating rate is about 100 ° C / min, so that the nitroge...
Embodiment 2
[0022] 3.53g fumed white carbon black (i.e. nano-SiO 2 , particle size less than 10nm) ultrasonic dispersion in 530ml of pure water, adjust the pH value to 2.0 with 36% ~ 38% hydrochloric acid (analytical grade), slowly add 1000ml of 10% tetra-n-butyl titanate ethanol solution dropwise under vigorous stirring, Then aging and reacting for 2 hours, filtering, the resulting solid was washed with deionized water, and dried in vacuum to obtain hydrated SiO 2 / TiO 2 Powder. 2.0g of the prepared hydrated SiO 2 / TiO 2 Put the powder into a porcelain boat and push it into a high-temperature corundum tube furnace. The two ends of the tube furnace are sealed but there are gas inlet and outlet ports. A mixture of ammonia and argon is introduced from the air inlet, the ratio of ammonia to argon is 1:1, and the flow rate of ammonia is controlled to be 0.05m 3 / h, after the gas flow rate is stable, start heating to 400 ° C, the heating rate is about 100 ° C / min, so that the nitrogen d...
Embodiment 3
[0024] Embodiment three: the preparation method step in the present embodiment is basically identical with embodiment one, difference is:
[0025] The ratio of ammonia gas to argon gas mixture is 4:1, and the flow rate of ammonia gas is controlled to be 0.2m 3 / h, the nitrogen doping reaction temperature is 500 ° C, the reaction time is 4 hours, and the photocatalyst SiO 2 / TiO 2-X N X Powder.
[0026] The above sample was observed by a transmission electron microscope (TEM), and its average particle size was 20nm, and analyzed by X-ray photoelectron spectroscopy (XPS), its nitrogen content was 1.51% by mass.
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com