Study On The Preparation And Photocatalytic Properties Of Aminated Gold Doped Nano TiO₂

This paper explores the preparation of TiO₂ nano materials by gel hydrothermal method,and the use of NH₂-HBP were prepared by controlling the HBP-TiO₂ and modified gold doped nano TiO₂,to explore the influence ofNH₂-HBP on nano TiO₂ particle size,dispersion and photocatalytic properties,the effect of doping gold concentration on photocatalytic performance of TiO₂.This paper using XRD,Nano Sizer,TEM,SEM,EDS and FT-IR technology on TiO₂?HBP-TiO₂ and Au-TiO₂.Through the optimization and characterization of the performance of the TiO₂ nano particles,through the synthesis of nano TiO₂ materials characterization of continuous optimization.The modified gold doped TiO₂ with excellent dispersion and photocatalytic properties was successfully prepard by the experiment.The experimental data show that pure TiO₂ has poor dispersion,general photocatalytic performance,and no natural photocatalytic activity.After controlling by HBP-NH₂,the particle size of TiO₂ nanoparticles is about 10 nm,and the dispersion property of nano TiO₂particles is obviously improved.The Au-TiO₂,in addition to the dispersion properties of nano TiO₂ particles significantly improved,but also improve the photocatalytic properties of nano TiO₂,with the increase of Au/Ti element content and molar ratio of Au doped,photocatalytic properties of nano TiO₂ were increased.Au-TiO₂ of Congo red and methylene blue degradation rate can reach 99%and 98%respectively,in the natural light of Congo red and methylene blue.The photocatalytic degradation rate by only about 4%more than 80%,the cotton fabric can be obtained with photocatalysis function by using nano TiO₂.