| 多级孔结构TiO_2微球光催化剂的制备及其性能研究 |
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| 引用本文： | 张莉,谭林燕,冯竹,朱强,赵国良,全学军. 多级孔结构TiO_2微球光催化剂的制备及其性能研究[J]. 重庆理工大学学报(自然科学版), 2011, 0(3) |
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| 作者姓名： | 张莉 谭林燕 冯竹 朱强 赵国良 全学军 |
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| 作者单位： | 重庆理工大学化学化工学院; |
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| 基金项目： | 重庆市大学生创新实验计划资助项目(CS200927) |
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| 摘 要： | 采用模板-超声-水热过程,制备出了性能良好的多级结构TiO2微球。该过程的最佳工艺条件为:乙醇中水浓度为10%(V/V)n,(H2O)/n(Ti)≈5,n(Ti)/n(P123)≈46,超声作用时间为90 min,水热定型处理后煅烧温度约为400℃。采用场发射扫描电镜(FESEM)、N2吸附仪和X射线衍射仪(XRD)对制备的TiO2微球样品进行了表征,表明该光催化材料主要为具有多级结构的TiO2微球,其比表面积达185 m2/g,晶相中锐钛型/金红石≈7∶3。样品的实际光催化效率是商业化P25催化剂的3.5倍以上,在实际废水处理领域具有较好应用前景。
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| 关 键 词： | 光催化剂 TiO2微球 多级孔结构 光催化降解 |
The Preparation and Performance of TiO_2 Microsphere Photocatalysts with Multilevel Hole Structure |
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| ZHANG Li,TAN Lin-yan,FENG Zhu,ZHU Qiang,ZHAO Guo-liang,QUAN Xue-jun. The Preparation and Performance of TiO_2 Microsphere Photocatalysts with Multilevel Hole Structure[J]. Journal of Chongqing University of Technology(Natural Science), 2011, 0(3) |
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| Authors: | ZHANG Li TAN Lin-yan FENG Zhu ZHU Qiang ZHAO Guo-liang QUAN Xue-jun |
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| Affiliation: | ZHANG Li,TAN Lin-yan,FENG Zhu,ZHU Qiang,ZHAO Guo-liang,QUAN Xue-jun(School of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400050,China) |
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| Abstract: | Nanometer TiO2 is a promising photo-catalyst with excellent physical and chemical property.However,when used in wastewater treatment,nanometer TiO2 is very difficult for its separation and recovery from liquid phase,causing a higher operation cost.Preparing TiO2 microsphere photo-catalysts with high activity provide a very good solution for this problem.TiO2 microspheres with multilevel hole structure were prepared using a new preparation process,which includes four steps,i.e.controllable hydrolysis and con... |
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| Keywords: | photo-catalyst TiO2 microsphere photocatalytic degradation multilevel hole structure |
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