A kind of hyperdisperse photocatalyst and its preparation method and application

Abstract

The invention provides an ultra-dispersed photocatalyst which is prepared from 90-110 parts of an alcohol solvent, 2-6 parts of titanium dioxide and 10-14 parts of a dispersing agent. The ultra-dispersed photocatalyst is a semi-transparent solution, the primary particle size of titanium dioxide is 10-50 nm, the secondary particle size of titanium dioxide is 100 nm, and the ultra-dispersed photocatalyst is safe, free of toxin and remarkable in catalytic effect. The ultra-dispersed photocatalyst mainly has the advantages that firstly, a photocatalysis response in the ultraviolet and visible light full-spectrum range is achieved; secondly, the photocatalyst is suitable for combustion catalysis of fuel; thirdly, the photocatalyst can remarkably reduce emission and is safe and environmentally friendly. A preparation method of the ultra-dispersed photocatalyst has the advantages that high dispersing of nano titanium dioxide in the alcohol solvent is achieved; part of titanium ion self-doping features are obtained, the forbidden band width is reduced, and the photocatalysis response in the ultraviolet and visible light full-spectrum range is achieved; cost is reduced. Application of the ultra-dispersed photocatalyst is not limited to indoor environment pollution, sterilization and deodorizing, and the ultra-dispersed photocatalyst can be directly applied to combustion catalysis of fuel, particularly combustion catalysis of fuel 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.