超声波制备介孔结构的氮掺杂TiO2纳米晶及其可见光催化性能

催化学报 , 2013, 34(6): 1250-1255. doi: 10.1016/S1872-2067(12)60578-6

超声波制备介孔结构的氮掺杂TiO2纳米晶及其可见光催化性能

周晚琴 ^1, , 余长林 ^2, , 樊启哲 ^3, , 魏龙福 ^4, , 陈建钗 ^5, , ^6,

1.江西理工大学信息工程学院,江西赣州341000

2.江西理工大学冶金与化学工程学院,江西赣州341000

3.江西理工大学冶金与化学工程学院,江西赣州341000

4.江西理工大学冶金与化学工程学院,江西赣州341000

5.江西理工大学冶金与化学工程学院,江西赣州341000

6.香港中文大学化学系,香港

基金项目: the China Scholarship Council(2011836054) the Young Scientists Cultivating Program of Jiangxi Province(20122BCB23015) 江西省教育厅科技基金(GJJ12344) 国家留学基金(2011836054).This work was supported by the National Natural Science Foundation of China(21067004,21263005) 江西省青年科学家培养项目(20122BCB23015) 国家自然科学基金(21067004,21263005) the Science and Technology Project of the Education Department of Jiangxi Province(GJJ12344)

关键词：氮掺杂 , 乙二胺 , 二氧化钛纳米晶 , 超声波 , 邻苯二甲酸二甲酯

Ultrasonic fabrication of N-doped TiO2 nanocrystals with mesoporous structure and enhanced visible light photocatalytic activity

ZHOU Wanqin ^1, , YU Changlin ^2, , FAN Qizhe ^3, , WEI Longfu ^4, , CHEN Jianchai ^5, , YU Jimmy C ^6,

1.江西理工大学信息工程学院,江西赣州341000

2.江西理工大学冶金与化学工程学院,江西赣州341000

3.江西理工大学冶金与化学工程学院,江西赣州341000

4.江西理工大学冶金与化学工程学院,江西赣州341000

5.江西理工大学冶金与化学工程学院,江西赣州341000

6.香港中文大学化学系,香港

Keywords： Nitrogen doping , Ethylene diamine , Titania nanocrystal , Ultrasound , Dimethyl phthalate

采用超声波辐射法制备了具有介孔结构的高浓度氮掺杂TiO2纳米晶(N/TiO2).采用N2物理吸附、X射线粉末衍射、X射线光电子能谱、透射电镜、光致发光谱和紫外-可见漫反射光谱等手段对N/TiO2进行了表征.以波长为400～660nm的可见光为光源,以水体污染物邻苯二甲酸二甲酯为降解对象,考察了不同制备方法对N/TiO2光催化性能的影响.结果表明,超声波辐射使氮掺杂浓度提高了2.2倍,该法制备的N/TiO2同时具有较好的介孔结构,表现了更高的光催化降解邻苯二甲酸二甲酯的活性.其活性提高的主要原因是N/TiO2含有更高浓度的氮和对可见光具有更强的吸收能力.

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