A kind of hyperdisperse photocatalyst and its preparation method and application

Abstract

The super-dispersed photocatalyst of the present invention includes the following components: 90 to 110 parts of alcohol solvent, 2 to 6 parts of titanium dioxide, and 10 to 14 parts of dispersant. The super-dispersed photocatalyst is a translucent solution, and the primary particle size of titanium dioxide is 10~50nm, the secondary particle size is less than 100nm, safe, non-toxic and has significant catalytic effect. It mainly has the following advantages: (1) Photocatalytic response in the full spectrum range of ultraviolet and visible; (2) Suitable for fuel combustion catalysis; (3) Significant emission reduction, safety and environmental protection. The preparation method of the super-dispersed photocatalyst of the present invention (1) achieves high dispersion of nanometer titanium dioxide in alcohol solvents; (2) obtains partial titanium ion self-doping characteristics, reduces the bandgap width, and achieves light in the full spectrum range of ultraviolet and visible. Catalytic response; (3) Reduce costs. The application of the super-dispersed photocatalyst of the present invention is no longer limited to indoor environmental pollution, sterilization, and deodorization, but can be directly applied to fuel combustion catalysis, especially fuel combustion catalysis of automobile internal combustion engines.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a super-dispersed catalyst of a modified titanium dioxide solution and a preparation method and application thereof. Background technique [0002] Substituting methanol for part of the fuel used in internal combustion engines has become an important way to reduce oil consumption. The diesel / methanol binary fuel system can increase the total efficiency of fuel combustion by more than 20%. Methanol makes diesel engines more energy-efficient and emission-reducing, making it one of the most promising alternative fuels for petroleum. However, in the process of burning and oxidizing binary fuels, due to pressure and temperature, there are still some incompletely oxidized and decomposed hydrocarbons. How to improve the combustion efficiency of fuel and promote the oxidation of combustion products has become the focus of researchers. [0003] At present, researchers at home and...

AI Technical Summary

Problems solved by technology

This method uses the catalytic oxidation reaction of the fuel under the magnetic environment to increase the burning rate, and the photocatalyst catalyst needs to be irradiated by an additional light source to play a role. All kinds of burners, boiler combustion systems and automobile internal combustion engines need to be modified, the cost of modification is very high, and the structure of the combustion device becomes more complicated

However, traditional photocatalysts are difficult to disperse in alcohol solvents. It is even more difficult to disperse in petroleum, diesel and diesel / methanol binary systems, and it is difficult to play a catalytic role.