以钛酸丁酯为原料,以尿素和稀土离子的硝酸盐溶液为掺杂物质,用溶胶-凝胶法制备了氮离子和稀土离子共掺杂的纳米TiO2样品. 采用TEM,BET,UV-VIS等方法对样品进行了表征,通过可见光下降解硝基苯对样品的光催化活性进行了研究. 结果表明,氮和稀土离子(Y,Nd)共掺杂可增大光催化剂的光吸收范围,并提高其催化活性; 当N,Y和Nd离子以7%,2.0%和1.5%(摩尔分数)共掺杂时,制备的样品具有最佳的光催化性能.
参考文献
| [1] | Hoffman M R;Martin S T;Choi W;Bahnemann D W.Environmental applications of semiconductor photocatalysis[J].Chemical Reviews,1995(95):69. |
| [2] | Herrmann J M;Guillard C;Pichat P .Heterogeneous photocatalysis:An emerging technology for water treatment[J].Catalysis Today,1993,17(32):7. |
| [3] | Lin L;Lin W J;Xie L;Zhu Y X Zhao B Y Xie Y C.Photocatalytic properties of phosphor-doped titania nanoparticles[J].Applied Catalysis B:Environmental,2007(75):52. |
| [4] | Hagfeldt A;Gratzel M.Light-induced reactions in nanocrystallines systems[J].Chemical Reviews,1995(95):49. |
| [5] | Klosek S;Raftery D J.Visible light driven V-doped TiO2 photocatalyst and its photooxidation of ethanol[J].Journal of Physical Chemistry B,2001(105):2815. |
| [6] | Lu H M;Takata T;Lee Y.Photocatalytic activity enhancing for titanium dioxide by co-doping with bromine and chlorine[J].Chemistry of Materials,2004(16):846. |
| [7] | Liu H Y;Gao L.Codoped rutile TiO2 as a new photocatalyst for visible light irradation[J].Chemistry Letters,2004(33):730. |
| [8] | Wei HY.;Wu YS.;Lun N.;Zhao F. .Preparation and photocatalysis of TiO2 nanoparticles co-doped with nitrogen and lanthanum[J].Journal of Materials Science,2004(4):1305-1308. |
| [9] | 黄东升,陈朝凤,李玉花,曾人杰.铁、氮共掺杂二氧化钛粉末的制备及光催化活性[J].无机化学学报,2007(04):738-742. |
| [10] | 杨华明,史蓉蓉,张科,李咸伟,欧阳静.纳米二氧化钛光催化剂改性研究进展[J].化工新型材料,2005(06):57-59. |
| [11] | 杨萍.Ⅱ-Ⅵ族半导体纳米傅合发光材料的研究[M].济南:山东大学出版社,2002:15. |
| [12] | 许国志.系统科学[M].上海:上海科技教育出版社,2000:9. |
| [13] | Li D;Ohashi N;Hishita S;Kolodiazhnyi T;Haneda H .Origin of visible-light-driven photocatalysis: A comparative study on N/F-doped and N-F-codoped TiO2 powders by means of experimental characterizations and theoretical calculations[J].International Journal of Quantum Chemistry,2005(11):3293-3302. |
| [14] | Wingkei Ho;Jimmy C.Yu;Shuncheng Lee .Synthesis of hierarchical nanoporous F-doped TiO_2 spheres with visible light photocatalytic activity[J].Chemical communications,2006(10):1115-1117. |
| [15] | 冯良荣,吕绍洁,邱发礼.稀土元素掺杂对纳米TiO2光催化剂性能的影响[J].复旦学报(自然科学版),2003(03):413-417. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%