以TiCl4为钛源,乙醇为溶剂,采用溶剂热法制备了不同氮、镧掺杂量的TiO2纳米粉;以甲基橙为目标降解物,考察了纳米粉在可见光下的光催化性能;采用XRD、FT-IR、UV-Vis等方法表征其结构及光吸收性能.结果表明:溶剂热法制备的TiO2以锐钛矿为主相,N、La掺杂可以促进其向金红石相转变,并且在TiO2表面生成Ti-O-N键和Ti-O-La键.氮、镧掺杂TiO2纳米粉表现较好的可见光催化性能,其中掺杂4%N,0.4%La(物质的量比)光催化剂的吸收红移至580 nm,并且在可见光下的催化活性比纯TiO2提高了5.5倍.
参考文献
| [1] | Maria C. Canela;Rosana M. Alberici;Raquel C. R. Sofia;Marcos N. Eberlin;Wilson F. Jardim .Destruction of malodorous compounds using heterogeneous photocatalysis[J].Environmental Science & Technology: ES&T,1999(16):2788-2792. |
| [2] | A. Di Paola;V. Augugliaro;L. Palmisano;G. Pantaleo;E. Savinov .Heterogeneous photocatalytic degradation of nitrophenols[J].Journal of Photochemistry and Photobiology, A. Chemistry,2003(1/3):207-214. |
| [3] | 彭绍琴,江风益,李越湘.N掺杂TiO2光催化剂的制备及其可见光降解甲醛[J].功能材料,2005(08):1207-1209. |
| [4] | Yin S;Ihara K;Aita Y et al.Visible-light induced photocatalytic activity of TiO2-(A:N,S)prepared by precipitation route[J].Journal of Photo-chemistry an d Photobiology A:Chemistry,2006,179:105-114. |
| [5] | 岑继文,李新军,何明兴,郑少健,冯满枝.镧在TiO2薄膜中的非均匀掺杂对光催化性能的影响[J].中国稀土学报,2005(06):668-673. |
| [6] | 王朋,陈文新,刘应亮,黄浪欢,石春山.稀土离子掺杂对于TiO2结构和光催化性能的影响[J].暨南大学学报(自然科学与医学版),2003(05):81-87. |
| [7] | Fu Q;Cao C B;Zhu H S.A solvothermal synthetic routetonep polyerystalline carbon nitride[J].Chemical Physics Letters,1999:314-323. |
| [8] | Xie Y;Qing Y T;Wang W Z et al.A benzene-thermal synthetic route to nanocrystalline GaN[J].Science,1996,272:1926. |
| [9] | Holmes JD;Jdamton KP;OotyR C et al.Control of thickness and orientation of solution-grown silicon nanowires[J].Science,2000,287:1471. |
| [10] | 唐培松,洪樟连,周时凤,樊先平,王智宇,钱国栋,王民权.可见光波段高光催化活性纳米TiO2制备及性能[J].稀有金属材料与工程,2004(z1):277-280. |
| [11] | S. Yin;Y. Aita;M. Komatsu .Visible-light-induced photocatalytic activity of TiO_(2-x)N_y prepared by solvothermal process in urea-alcohol system[J].Journal of the European Ceramic Society,2006(13):2735-2742. |
| [12] | 许春红,夏庆余,郑曦,陈日耀,陈震.纳米三氧化二镧-二氧化钛光催化活性的研究[J].无机盐工业,2005(06):28-30. |
| [13] | 余家国,赵修建,赵青南.光催化多孔TiO2薄膜的表面形貌对亲水性的影响[J].硅酸盐学报,2000(03):245-250. |
| [14] | 俞娇仙 .纳米TiO2的掺杂改性及光催化性能研究[D].济南:山东轻工业学院,2008. |
| [15] | Asahi R;Morikawa T;Ohwaki T et al.Visible-light photocatalysis in Nitrogen-doped titanium oxides[J].Science,2001,293(13):169-271. |
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%