Method for preparing tungsten oxide filled phthalic acid nano tube

Abstract

The invention discloses a method for preparing a tungsten oxide filled phthalic acid nano tube. The method comprises the following processes of: 1, performing dipping and filling by using capillarity: selecting a purchased or self-made phthalic acid nano tube, adding 10 to 50 milliliters of deionized water and 0.5 to 10 grams of sodium tungstate (NaWO4.2H2O) into the phthalic acid nano tube, performing full stirring and dissolution, performing ultrasonic treatment for 0.5 to 5 hours, and stirring the solution for 1 to 40 hours; 2, sealing the tube: adding 5 to 20 milliliters of 0.1 to 2mol / L HCl into the solution, and quickly stirring the solution for 3 to 10 minutes at the revolution speed of 700 to 1,000rpm; and 3, performing reaction in the tube: transferring the suspension to a centrifugal tube, centrifuging the suspension for 5 to 20 minutes at the centrifuging speed of 4,000 to 8,000rpm, pouring the centrifuged solution, adding the sediment into 5 to 20 milliliters of 1 to 2mol / L HCl, continuously performing reaction for 1 to 5 hours with stirring to react the un-reacted sodium tungstate in the tube into tungstic acid, washing the product for 1 to 5 times by using deionized water and 1 to 3 times by using alcohol to remove the sodium tungstate outside the nano tube after the reaction is completed, and finally drying the product at the temperature of between 60 and 80 DEG C to obtain a one-dimensional composite nano material, namely the tungsten oxide filled phthalic acid nano tube product.

Description

A kind of preparation method of tungsten oxide filled phthalic acid nanotube technical field The invention relates to a method for preparing tungsten oxide nanoparticle-filled titanate nanotubes by using a high specific surface area titanate nanotube as a carrier and sodium tungstate as a precursor through an impregnation-precipitation method. Background technique Since the report of Japanese scholars Fujishima and Honda in 1972, TiO2 photocatalytic materials have been widely used in wastewater treatment, air purification, sterilization and self-cleaning due to their strong oxidation ability, high catalytic activity, stable physical and chemical properties, low price and non-toxicity. has been at the core of research. However, with the deepening of the research, the researchers found that TiO2 itself has two major defects that need to be resolved. First, this high-band material (Eg≈3.2eV) can only be excited by ultraviolet light with a wavelength less than 387.5nm. Since...

AI Technical Summary

Problems solved by technology

First, this high-energy-band material (Eg≈3.2eV) can only be excited by ultraviolet light with a wavelength less than 387.5nm

Since ultraviolet light only accounts for 3%~5% of sunlight, the efficiency of the material itself in the utilization of sunlight is low.

Second, the photogenerated electrons-holes on the surface are easy to recombine, which leads to the reduction of its photocatalytic efficiency.

So far, people have conducted in-depth and extensive research on the synthesis method, composition, thermal stability and formation mechanism of phthalic acid nanotubes. However, the research on the multi-component doping modification and physical properties of phthalic acid nanotubes still very little

Images