采用超声St(o)ber法制备了单分散性的纳米载体SiO2,再采用Pechini溶胶-凝胶制备法制备出SiO2/TiO2复合微球.通过X射线衍射仪、场发射扫描电子显微镜(FESEM)对粉体的晶型和显微形貌进行测试分析.结果表明:纳米载体SiO2球形颗粒为无定形态,Ti02粉体为形貌多样的块状颗粒,大颗粒粒径大于10μm；Ti/Si(摩尔比)的变化明显影响合成复合粉体的形貌和粒径,当Ti/Si=1∶3时可获得球形复合微球,且不存在块状颗粒.
参考文献
| [1] | 王毅,吕滨,王恩德,王福会.TiO2纳米复合醇酸树脂涂料的性能研究[J].功能材料与器件学报,2011(05):450-453. |
| [2] | E. Alonso;I. Montequi;M.J. Cocero .Effect of synthesis conditions on photocatalytic activity of TiO2 powders synthesized in supercritical CO2[J].The Journal of Supercritical Fluids,2009(2):233-238. |
| [3] | Mahmoudian, M.R.;Basirun, W.J.;Alias, Y. .Synthesis of polypyrrole/Ni-doped TiO_2 nanocomposites (NCs) as a protective pigment in organic coating[J].Progress in Organic Coatings: An International Review Journal,2011(1):56-64. |
| [4] | Hu Y J;Li C Z;Gu F et al.Facile flame synthesis and photoluminescent properties of core/shell TiO2/SiO2 nanoparticles[J].Journal of Alloys and Compounds,2007,432:L5-L9. |
| [5] | 钱东,程睿菁,卢周广,李波,王洪恩,黄可龙.TiO2/SiO2核/壳结构复合粒子的组装及其电化学性能[J].无机化学学报,2007(02):305-309. |
| [6] | Kim KD;Kim HT .Comparison of the growth mechanism of TiO2-coated SiO2 particles prepared by sol-gel process and water-in-oil type microemulsion method[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2005(1/3):131-137. |
| [7] | 肖逸帆,柳松.二氧化硅改性二氧化钛光催化活性研究进展[J].无机盐工业,2007(09):5-8. |
| [8] | Wu Y T;Wang X F .Preparation and characterization of single-phase α-Fe2O3 nano-powders by Pechini sol-gel method Photonic[J].Materials Letters,2011,65(13):2062-2065. |
| [9] | 张春祥,史建设,杨绪杰,陆路德,汪信.EDTA络合法制备Ni-Zn铁氧体及其磁学性质[J].功能材料与器件学报,2010(05):495-501. |
| [10] | Tanja Razpotnik;Jadran Macek .Synthesis of nickel oxide/zirconia powders via a modified Pechini method[J].Journal of the European Ceramic Society,2007(2/3):1405-1410. |
| [11] | 伍媛婷,王秀峰.二氧化硅胶体球的制备、改性及其胶体晶体的组装[J].功能材料与器件学报,2011(03):323-326. |
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%