Composite nanometer phosphotungstic acid-titanium dioxide photocatalysis material and preparation method thereof

Abstract

The invention discloses a composite nanometer phosphotungstic acid-titanium dioxide photocatalysis material and a preparation method thereof. The method includes the steps: firstly, titanium dioxide cThe invention discloses a composite nanometer phosphotungstic acid-titanium dioxide photocatalysis material and a preparation method thereof. The method includes the steps: firstly, titanium dioxide cstill be maintained.an still be maintained.ght; and further more, after the subsequent step of heating photocatalysis materials is accomplished, the keggin structure of the phosphotungstic acid is not affected, and high catalytic activity can ght; and further more, after the subsequent step of heating photocatalysis materials is accomplished, the keggin structure of the phosphotungstic acid is not affected, and high catalytic activity c liollosol, phosphotungstic acid and propylene glycol methyl ether, of which the mass ratio is 20 to 3 to 50, are uniformly mixed to form composite collosol; secondly, the composite collosol is heated foollosol, phosphotungstic acid and propylene glycol methyl ether, of which the mass ratio is 20 to 3 to 50, are uniformly mixed to form composite collosol; secondly, the composite collosol is heated for 30 minutes at the temperature of 300 DEG C to form dried gel; and finally, the dried gel is mechanically processed for two hours by ball milling so as to obtain phosphotungstic acid-titanium dioxider 30 minutes at the temperature of 300 DEG C to form dried gel; and finally, the dried gel is mechanically processed for two hours by ball milling so as to obtain phosphotungstic acid-titanium dioxidephotorecombination photocatalyst materials. Compared with the prior art, the phosphotungstic acids of the invention are combined into a stable netty structure in the form of W-O-P molecular linkages, photorecombination photocatalyst materials. Compared with the prior art, the phosphotungstic acids of the invention are combined into a stable netty structure in the form of W-O-P molecular linkages, thereby reducing the oxidation-reduction potential, enabling a titanium dioxide composite membrane photoabsorption wavelength to generate redshift, and improving the utility ratio of titanium visiblethereby reducing the oxidation-reduction potential, enabling a titanium dioxide composite membrane photoabsorption wavelength to generate redshift, and improving the utility ratio of titanium visibleli

Description

A composite nano-phosphotungstic acid-titanium dioxide photocatalytic material and its preparation method Technical field: The invention relates to a photocatalyst material, in particular to a composite nano-phosphotungstic acid-titanium dioxide photocatalyst material which can be used for indoor air pollution control, and at the same time, the invention also relates to a method for preparing the material. Background technique: In recent years, with the improvement of people's living standards, a large number of new decorative materials and luxurious and fashionable modern furniture and other daily necessities have continuously entered the room, and the resulting indoor environmental pollution has become increasingly serious. At present, the main indoor pollutants formaldehyde, benzene, toluene and other volatile organic compounds (voc) seriously exceed the standard, which brings great harm to people's health. Regarding the control of indoor pollutants, there are many met...

AI Technical Summary

Problems solved by technology

Its advantages are fast elimination speed, good effect, long duration, basically no secondary pollution, and the photocatalyst itself is not lost as a catalyst; the disadvantage is that it needs ultraviolet light to excite, the utilization rate of visible light is low, and weak indoor light will affect the catalytic effect