Tungsten Oxide Airgel and Its Preparation Method and Application

The present invention discloses a method for preparing , tungstic acid is a polyethyleneimine with a mass ratio of 1:1 in water and uniformly mixed, adjusted to pH 1-5, diluted with water to the solution of tungstic acid polyethylene imine mass fraction of 0.05 to 0.1, and the resulting reaction mixture was prepared by hydrothermal hydrogel, then freeze-dried hydrogel or supercritical drying to obtain a tungsten oxide airgel; which hot water assisted gel method by adding polyethyleneimine morphology directing agent, succeeded in the tungsten oxide nanowires grow into alignment, and entanglement between the nanowires to form a continuous three-dimensional spatial network structure, constituting the final oxidation Tungsten airgel, which is made by winding nanowires airgel favor fixed proteases, protease can be used as direct electron transfer of the baton, which will help direct electrochemistry of proteases, which could be used to build a stable and efficient direct electrochemical bio sensor test electrodes.




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