采用TiCl4水解法制备了锐钛矿和金红石型的纳米TiO2,用XRD和TEM对粉体的晶体结构和表面形貌进行了表征.在400～1 000℃之间对锐钛矿型TiO2进行煅烧,分析了不同温度处理后样品的晶体结构和光催化活性的变化.结果表明:以TiCl4为前驱体,在90℃时水解制得的锐钛矿型纳米TiO2在600～800℃之间开始向金红石型转变,在800℃时全部转变为金红石型纳米TiO2;600℃煅烧处理后的纳米TiO2具有最好的光催化活性,光照3 h后对甲基橙的降解率可以达到86.96%.
参考文献
| [1] | 颜鲁婷,司文捷,苗赫濯.纳米TiO2光催化材料的研究进展[J].材料科学与工程学报,2004(05):760-763. |
| [2] | 张彭义;余刚;蒋展鹏 .半导体光催化剂及其改性技术进展[J].环境科学进展,1997,5(03):129. |
| [3] | Jeong Hoon Lee;Yeong Seok Yang .Effect of hydrolysis conditions on morphology and phase content in the crystalline TiO2 nanoparticles synthesized from aqueous TiCl4 solution by precipition[J].Materials Chemistry and Physics,2005,93:237. |
| [4] | Yamashita H;Harada M;Misaka J et al.Photocatalytic degradation of organic compounds diluted in water using visible light-responsive metal ion-implanted TiO2 catalysts:Fe ion-implanted TiO2[J].Catalysis Today,2003,84(3-4):191-196. |
| [5] | 刘昭麟,张志焜.纳米TiO2的结构相变和光学性能[J].青岛科技大学学报(自然科学版),2004(01):26-29. |
| [6] | 陈德明,王亭杰,雨山江,金涌.纳米TiO2的性能、应用及制备方法[J].材料工程,2002(11):42-47. |
| [7] | Zhang Q H;Gao L;Guo J K .Preparation and characterization of nanosized TiO2 powders from aqueous TiCl4 solution[J].NanoStructures Materials,1999,11(08):1293-1300. |
| [8] | Yuanzhi Li;Yining Fan;Yi Chen .A novel method for preparation of nanocrystalline rutile TiO_2 powders by liquid hydrolysis of TiCl_4[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2002(5):1387-1390. |
| [9] | Ohtanib;Ogawa Y;Nishimoto S .Photocataly activity of amorphous-anatase mixture of titanium oxide particles suspended in aqueous solutions[J].Physical Chemistry B,1997,101:3746-3750. |
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%