制备条件对Bi^3＋掺杂纳米TiO2光催化性能的影响  

Effect of Preparation Process on Photocatalytic Activity of Bi^(3+) doped Nano-TiO_2

作　　者：姜聚慧[1] 朱琳芳[1] 王慧[1] 王林浩[1] 

机构地区：[1]河南师范大学化学与环境科学学院,绿色化学介质与反应省部共建教育部重点实验室,河南新乡453007

出　　处：《化学研究与应用》2011年第6期707-711,共5页Chemical Research and Application

摘　　要：以钛酸四丁酯为原料,采用溶胶-凝胶法制备了掺杂铋的TiO2纳米微粒,通过正交实验法研究了溶剂乙醇量,加水量,铋掺杂百分比,抑制剂乙酸和pH调节剂浓硝酸用量等因素对光催化剂性能的影响,催化剂活性用光催化降解偶氮胭脂红溶液的降解率表示,确定了各因素的最佳水平,即浓硝酸0.2mL,铋掺杂量0.5%,水7.2mL,无水乙醇60mL,乙酸7.5mL。实验表明在优选的工艺条件下制得的铋掺杂TiO2光催化性能最优,偶氮胭脂红溶液的降解率可达99%,掺杂铋能明显改善二氧化钛的光催化性质。Bi3＋doped TiO2 nanoparticles were prepared by sol-gel method using Ti（OC4H9）4 as material.The effects of the solvent of ethanol volume,the water volume,the percents of Bi3＋-doped contents,the depressor of acetic acid volume and the pH modifier-concentrated nitric acid volume on performance of photocatalysis which was exhibited by the degradation rate of azo-carmine solution were discussed by the orthogonalizing analysis.The best level of the factors was determined so as to optimize the quality of photocatalysis.And the best level was as follows：concentrated nitric acid was 0.2mL;the percents of Bi3＋-doped contents was 0.5%;the water volume was 7.2mL;the ethanol volume was 60mL;the acetic acid volume was 7.5mL.The experiment indicated that the Bi3＋doped TiO2 nanoparticles＇ quality of photocatalysis was better than others in the orthogonal experiments and pure TiO2 nanoparticles＇,the degradation rate of azo-carmine solution was 99%.

关 键 词：溶胶-凝胶法 正交实验法 Bi3+掺杂 TIO2 光催化 

分 类 号：O643.3[理学—物理化学]