摘要
Abstract
This research use dip coating technology,the TiO2 on the stainless steel wire mesh.We analyze the phase by XRD,using scanning electron microscopy (SEM) characterization of the microstructure,using methyl orange as a target the pollutant,explores the stirring,coating number,doping,the light source on the effect of TiO2 photocatalytic degrada-tion of performance and the effect of repeated use.The results showed that:TiO2 that we made is mainly anatase type.With the increase of number of dipcoating,microstructure of TiO2 thin film on the surface of stainless steel wire mesh change. Stirring,coating number,doped lanthanum make for improving photocatalytic activity of TiO2,TiO2 using ultraviolet a-bility batter with ability of visible light.With the increase of number of dip coating,TiO2 photocatalytic degradation of methyl or ange showed the efficiency first increase and then decrease,catalytic degradation efficiency of the 7 membrane lay-er is the highest,4 h the degradation rate is 77.6%.Immobilize TiO2 thin film on stainless steel wire mesh in therepetitive experiments,except the first after the catalytic degradation efficiency is reduce,other is basically remain unchanged,sta-ting it can belong term use the light catalytic degradation.关键词
二氧化钛薄膜/光催化性/掺杂/降解效率/微观形貌Key words
Titanium dioxide film/Photocatalysis/Doping/Degradation efficiency/The microstructure分类
化学化工
