采用盐溶液辅助的溶胶-凝胶法制备了粒径可控的球形TiO2微粒.基于SEM、XRD、IR、TG-DSC等分析手段,系统研究了盐溶液的种类和浓度对微球粒径及粒径分布的影响,并对其生长机理进行了简单分析.实验结果表明,对于不同种类的盐溶液,随着阳离子半径的增大,TiO2微球的粒径变小,这可能是由于阳离子半径越大,其水化半径越小;相同种类的盐溶液浓度越大,TiO2微球的粒径越大,这可能是由于浓度变大,扩散层变薄,同时碰撞机会也增大,聚沉能力增大.
参考文献
| [1] | Vorontsov A V et al.[J].P G Appl Catal B,2001,32(1-2):11-24. |
| [2] | 陈猛.TiO2纳米粉的制备及其表征[J].哈尔滨工程大学学报,2001(03):79-81. |
| [3] | 赵旭,王子忱,赵敬哲.球形二氧化钛的制备[J].功能材料,2000(03):303. |
| [4] | Venkatachalam N et al.[J].V Materials Chemistry and Physics,2007,104(2-3):454-459. |
| [5] | Widoniak J;Eiden-Assmann S;Maret G .Synthesis and characterisation of porous and non-porous monodisperse TiO2 and ZrO2 particles[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2005(0):329-334. |
| [6] | Yang Liangzhun et al.[J].Materials Research Bulletin,2008,43(04):806-810. |
| [7] | Eiden-Assmann S.;Widoniak J.;Maret G. .Synthesis and characterization of porous and nonporous monodisperse colloidal TiO2 particles[J].Chemistry of Materials,2004(1):6-11. |
| [8] | 施利毅;胡莹玉;张剑平 等.[J].功能材料,1999,30(05):495-497. |
| [9] | Porras M;Martinez A;Solans C;Gonzalez C;Gutierrez JM .Ceramic particles obtained using W/O nano-emulsions as reaction media[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2005(0):189-194. |
| [10] | Kim KD;Kim SH;Kim HT .Applying the Taguchi method to the optimization for the synthesis of TiO2 nanoparticles by hydrolysis of TEOT in micelles[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2005(1/3):99-105. |
| [11] | S.AMARCHAND;T.R.RAMA MOHAN;P.RAMAKRISHNAN .A novel chemical solution techniique for the preparation of nano size titanium powders from titanium dioxide[J].Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan,2000(4):415-422. |
| [12] | Jongsoon Park et al.[J].Journal of Physical Chemistry B,2001,105(47):11630-11635. |
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