Nanometer titanium dioxide material uniform in particle size distribution

Abstract

The invention discloses a nanometer titanium dioxide material uniform in particle size distribution. The nanometer titanium dioxide material is prepared through the following steps of step 1, adding titanic acid dinbutyl phthalate to anhydrous ethanol, adding polyvinylpyrrolidone, performing sealing ultrasonic dispersion for 10-30min, and performing cooling so as to obtain titanic acid dinbutyl phthalate fluid dispersion; step 2, adding hydroxypropylcelliloxe to the titanic acid dinbutyl phthalate fluid dispersion, performing slow stirring until the hydroxypropylcelliloxe completely dissolves,and then performing sealing ultrasound treatment for 20-50min, so as to obtain the titanic acid dinbutyl phthalate fluid dispersion with a double dispersing system; step 3, slowly adding distilled water to the titanic acid dinbutyl phthalate fluid dispersion with the double dispersing system, performing uniform stirring, performing sealing heating supersonic reaction for 2-5h, performing ultrasound evaporation reaction for 2-4h, and performing filtering while the processed titanic acid dinbutyl phthalate fluid dispersion is hot, so as to obtain sediment; and step 4, adding the sediment to methanol reaction liquid, performing micro electrolytic reaction for 3-5h, performing filtering and washing, and then performing drying so as to obtain the nanometer titanium dioxide material uniform inparticle size distribution. Through adoption of the nanometer titanium dioxide material disclosed by the invention, the problem that a conventional technical technology is complicated is solved; and the prepared titanium dioxide has good photocatalytic activity, and is uniform in particle size distribution and good in structural stability.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a nanometer titanium dioxide material with uniform particle size distribution. Background technique [0002] TiO as one of semiconductor photocatalysts 2 Photocatalytic materials are currently the most researched new type of environmentally friendly materials, and the properties of photocatalysts are the key factors in the photocatalytic oxidation process. TiO 2 The crystal form, grain size and particle diameter, surface state and other factors have a great influence on its photocatalytic performance. Nanoparticles with large surface area have good catalytic activity and selectivity due to their surface effect and volume effect. Nano-TiO 2 Due to its quantum size effect, the conduction band and valence band energy levels become discrete energy levels, the energy gap widens, the conduction band potential becomes more negative, and the valence band poten...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a nano-titanium dioxide material with uniform particle size distribution, which solves the problem of complex process in the prior art, and the prepared titanium dioxide has good photocatalytic activity, uniform particle size distribution and stable structure it is good