金属离子掺杂TiO_2光催化降解甲基橙的研究  

Study on photocatalytic degradation of methyl orange by metal ionic co-doped TiO_2 nanocrystal

作　　者：邹继颖[1] 刘辉[1] 陈意 李万海[1] 权佳惠 李英华[1] 刘善军 胡良宇[1] 

机构地区：[1]吉林化工学院资源与环境工程学院,吉林132022 [2]滨海艾思伊环保有限公司,滨海224500 [3]吉林梦溪过程管理有限公司,吉林132000

出　　处：《化工新型材料》2017年第8期149-151,共3页New Chemical Materials

基　　金：科技部;环保部项目(2014ZX07201-011);吉林化工学院重点科学研究项目

摘　　要：采用溶胶-凝胶法,以钛酸正丁酯为前驱物,无水乙醇为溶剂,冰醋酸为螯合剂,控制反应温度为40℃,pH=2~3,控制不同原料配比和煅烧温度,制备二氧化钛(TiO_2),及制备Cu^(2+)、Fe^(3+)、Zn^(2+)、Sr^(2+)、Na^+、Co^(2+)掺杂的TiO_2光催化剂,每种金属离子掺杂质量分数为0.2%。结果表明,最佳条件为钛酸正丁酯∶无水乙醇∶蒸馏水∶冰醋酸(体积比)=1∶10∶3∶1,煅烧温度为600℃;金属离子掺杂量相同的情况下,光催化降解甲基橙的顺序为:Fe-TiO_2>Cu-TiO_2>Na-TiO_2>CoTiO_2>Sr-TiO_2>TiO_2>Zn-TiO_2。By sol-gel method,tetrbutyl titanate and absolute ethyl alcohol were used as primary precursor and solvent,as well as glacial acetic acid as chelating agent.The reaction temperature was controlled at 40℃ and ph was 2~3.It was controlled that the different proportion of raw materials and calcination temperature,the preparation of TiO2 was carried out.The composite TiO^（3＋） 2photocatalyst co-doped Cu^（2＋）,Fe,Zn^（2＋）,Sr^（2＋）,Na~＋ and Co^（2＋） were prepared,and the doping amount was 0.2% respectively.The results indicated that under the best experimental conditions,the volume ratio of tetrabutyl titanate hydrolysis∶absolute ethyl alcohol∶distilled water∶glacial acetic acid was 1∶10∶3∶1.The photocatalytic activity was the highest and calcination temperature was 600℃.When different metal ions had the same amount of doping,photocatalytic degradation of methyl orange order was Fe-TiO2Cu-TiO2Na-TiO2Co-TiO2Sr-TiO2TiO2Zn-TiO2.

关 键 词：二氧化钛 金属离子掺杂 溶胶-凝胶法 光催化 甲基橙 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] X703[环境科学与工程—环境工程]