以SO24-、F、Cl和PO34-作为阴离子来研究其对水热合成TiO2(分别记为TiO2-S、TiO2-F、TiO2-Cl和TiO2-P)晶体的影响,并考察了其光催化性能.SEM显示TiO2-S、TiO2-F、TiO2-Cl和TiO2-P分别呈粒子、十面体、刺球和不规则块状.XRD图谱表明TiO2-S和TiO2-F为锐钛矿晶型,TiO2-Cl为金红石晶型,而TiO2-P为锐钛矿、金红石和板钛矿混合晶型,这一结论也被紫外-可见漫反射实验所证实.XPS能谱表明这4种TiO2纳米材料都受到了各自阴离子掺杂的影响,光催化试验显示:它们的光催化活性顺序为:TiO2-F＞TiO2-S＞TiO2-Cl＞TiO2-P,这表明锐钛矿的光催化活性要大于金红石和板钛矿,且具有{001}面,掺杂了F的锐钛矿光催化活性更强.
参考文献
| [1] | Fijishima A;Honda K .Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38. |
| [2] | 陈晓慧,柳丽芬,杨凤林,张兴文,余济美.CdS/TiO2光催化去除水体中氨氮的研究[J].感光科学与光化学,2007(02):89-101. |
| [3] | 吴孟强,张其翼,陈艾,马银铃.凝胶-水热法制备纺锤形TiO2粉体[J].硅酸盐学报,2002(01):108-111. |
| [4] | 李雪飞,矫庆泽,赵芸,黎汉生.水热法制备TiO2一维纳米材料研究进展[J].化工进展,2011(02):332-338. |
| [5] | Huang, JQ;Cao, YG;Huang, QF;He, H;Liu, Y;Guo, W;Hong, MC .High-Temperature Formation of Titanate Nanotubes and the Transformation Mechanism of Nanotubes into Nanowires[J].Crystal growth & design,2009(8):3632-3637. |
| [6] | 王东波,吴季怀,郝三存,兰章,杨宏训.纳米二氧化钛的水热法制备及在染料敏化太阳能电池中的应用[J].感光科学与光化学,2006(03):173-179. |
| [7] | Kasuga T.;Hoson A.;Sekino T.;Niihara K.;Hiramatsu M. .Titania nanotubes prepared by chemical processing[J].Advanced Materials,1999(15):1307-1311. |
| [8] | 黄涛,张国亮,张辉,许伟,蒋华兵.高性能纳米二氧化钛制备技术研究进展[J].化工进展,2010(03):498-504. |
| [9] | 黄晖,罗宏杰,杨明,刘江.水热沉淀法制备TiO2纳米粉体的研究[J].硅酸盐通报,2000(04):8-12. |
| [10] | Hua Gui Yang;Cheng Hua Sun;Shi Zhang Qiao;Jin Zou;Gang Liu;Sean Campbell Smith;Hui Ming Cheng;Gao Qing Lu .Anatase TiO2 single crystals with a large percentage of reactive facets[J].Nature,2008(7195):638-641. |
| [11] | Jian Pan;Gang Liu;Gao Qing (Max) Lu .On the True Photoreactivity Order of {001}, {010}, and {101} Facets of Anatase TiO2 Crystals[J].Angewandte Chemie,2011(9):2133-2137. |
| [12] | 朱地,刘冉冉,李海龙,陈涛,田文宇,孙茂,黎春,刘春立.水热法制备不同晶粒尺寸的纳米二氧化钛[J].北京大学学报（自然科学版）,2010(04):525-530. |
| [13] | Liu, B;Aydil, ES .Growth of Oriented Single-Crystalline Rutile TiO2 Nanorods on Transparent Conducting Substrates for Dye-Sensitized Solar Cells[J].Journal of the American Chemical Society,2009(11):3985-3990. |
| [14] | Maria-Veronica Sofianou;Christos Trapalis;Vassils Psycharis .Study of TiO_2 anatase nano and microstructures with dominant {001} facets for NO oxidation[J].Environmental Science and Pollution Research,2012(9):3719-3726. |
| [15] | Zhao Zhao;Zaicheng Sun;Haifeng Zhao .phase control of hierarchically structured mesoporous anatase TiO2 microspheres covered with {001} facets[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2012(41):21965-21971. |
| [16] | Chen, Q.;Ma, W.;Chen, C.;Ji, H.;Zhao, J. .Anatase TiO _2 mesocrystals enclosed by (001) and (101) facets: Synergistic effects between Ti ~(3+) and facets for their photocatalytic performance[J].Chemistry: A European journal,2012(40):12584-12589. |
| [17] | Azhar Ali Haidry;Jarmila Puskelova;Tomas Plecenik;Pavol Durina;Jan Gregus;Martin Truchly;Tomas Roch;Miroslav Zahoran;Melinda Vargova;Peter Kus;Andrej Plecenik;Gustav Plesch.Characterization and hydrogen gas sensing properties of TiO_2 thin films prepared by sol-gel method[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2012:270-275. |
| [18] | Zhang, H.;Liu, P.;Li, F.;Liu, H.;Wang, Y.;Zhang, S.;Guo, M.;Cheng, H.;Zhao, H. .Facile fabrication of anatase TiO_2 microspheres on solid substrates and surface crystal facet transformation from {001} to {101}[J].Chemistry: A European journal,2011(21):5949-5957. |
| [19] | 艾智慧,姜军清,杨鹏,周涛,陆晓华.微波辅助光催化降解4-氯酚的研究[J].工业水处理,2004(11):41-44. |
| [20] | Horihoshi S;Hidaka H;Serpone N .Effects of microwave,UV,and O3 on propylene gas degradation via photocatalytic reaction with CVD TiO2 films[J].Journal of Photochemistry and Photobiology A:Chemistry,2003,159(06):289-296. |
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%