| N与La共掺杂纳米TiO_2/电气石复合材料的制备及其光催化性能 |
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| 引用本文： | 刘欣伟,陈勇,李慧,陈昌兵,张文通.N与La共掺杂纳米TiO_2/电气石复合材料的制备及其光催化性能[J].复合材料学报,2016,33(4):875-883. |
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| 作者姓名： | 刘欣伟 陈勇 李慧 陈昌兵 张文通 |
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| 作者单位： | 1. 后勤工程学院 国防建筑规划与环境工程系, 重庆 401311;
2. 北京师范大学 化学学院, 北京 100875 |
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| 基金项目： | 重庆市自然科学基金(CSTC 2008BB7139) |
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| 摘 要： | 采用超声辅助溶胶-凝胶法,以钛酸丁酯为原料,尿素为N源,硝酸镧为La源,制备了N与La共掺杂纳米TiO_2/电气石复合材料。采用XRD、UV-Vis、SEM-EDS和XPS对复合材料的结构和性能进行了表征。以2,4,6-三硝基甲苯作为目标污染物,考察了N与La共掺杂纳米TiO_2/电气石复合材料的光催化活性及再生利用性能。结果表明:N与La共掺杂并负载电气石后,两者协同作用使TiO_2晶粒更加细化,光吸收范围向可见光区拓展,N与La共掺杂纳米TiO_2/电气石复合材料具有良好的光催化活性和再生利用性能,且在模拟可见光照射条件下对2,4,6-三硝基甲苯具有良好的去除效果。
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| 关 键 词： | 共掺杂 TiO2 电气石 复合材料 光催化 |
| 收稿时间： | 2015-07-20 |
Preparation and photocatalytic activity of N and La co-doped nano TiO2/tourmaline composites |
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| LIU Xinwei;CHEN Yong;LI Hui;CHEN Changbing;ZHANG Wentong.Preparation and photocatalytic activity of N and La co-doped nano TiO2/tourmaline composites[J].Acta Materiae Compositae Sinica,2016,33(4):875-883. |
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| Authors: | LIU Xinwei;CHEN Yong;LI Hui;CHEN Changbing;ZHANG Wentong |
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| Affiliation: | 1. Department of National Defense Architecture Planning & Environmental Engineering, Logistic Engineering University, Chongqing 401311, China;
2. College of Chemistry, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Using Ti(OC4H9)4 as raw material, CO(NH2)2 as N source, La(NO3)3·6H2O as La source, the N and La co-doped nano TiO2/tourmaline composites were synthesized via ultrasonic assisted sol-gel method. The structure and performance of composites were characterized by XRD, UV-Vis, SEM-EDS and XPS. The photocatalytic activity and recycling performance of N and La co-doped nano TiO2/tourmaline composites were evaluated with 2, 4, 6-trinitrotoluene as target pollutant. The results show that TiO2 grain sizes refine more and light abstraction width expands to visible region by the synergetic effect of N and La co-doped, and tourmaline loaded. N and La co-doped nano TiO2/tourmaline composites have good photocatalytic activity and recycling performance.The removal effect of 2, 4, 6-trinitrotoluene is good under the condition of simulating visible light irradiation. |
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| Keywords: | co-doped TiO2 tourmaline composites photocatalysis |
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