Ni、B共掺杂TiO2-陶粒光催化降解染料废水研究

采用溶胶-凝胶法制备陶粒负载Ni2O3和B元素共掺杂纳米TiO2可见光催化剂,以甲基橙为目标降解物,探讨了光催化氧化降解甲基橙的规律,考察了催化剂的焙烧温度、Ni元素和B元素掺杂量、催化剂投加量、甲基橙溶液初始浓度、初始pH值、反应温度等因素对甲基橙脱色效果的影响.结果表明:在600℃温度下焙烧的催化剂具有最佳光催化活...

Photocatalytic degradation of dye wastewater by Ni, B codoped TiO2 supported on haydite

Using Ni,B codoped TiO2 supported on haydite prepared by sol-gel method as visible light photoca-talyst,methyl orange as degradation agent,the rules of photocatalytic oxidation degradation of methyl orange were discussed;the influences of calcination temperature of catalyst,doping content of Ni and B,dosage of catalyst,initial concentration of methyl orange solution,initial pH value,reaction temperature and some other factors on the decolo-rization effect were investigated.The results showed that: the catalyst calcinated at 600 ℃ had the best photocataly-tic activity;the optimal doping content of B and Ni was 3.0%;the decolorization rate of methyl orange increased with the decrease of initial concentration of methyl orange solution and pH value,and the increase of catalyst dosage and reaction temperature.Besides,the catalyst still had good photocatalytic performance after being used repeatedly.