Size-controlled synthesis of nano alpha-alumina particles through the sol-gel method

作者：Mirjalili F^*; Hasmaliza M; Abdullah L Chuah

来源：Ceramics International, 2010, 36(4): 1253-1257.

DOI：10.1016/j.ceramint.2010.01.009

• Sol-gel processes
• X-ray methods
• Al(2)O(3)

Nano a-alumina particles were synthesized by a sol-gel method using aqueous solutions of aluminum isopropoxide and 0.5 M aluminum nitrate. 1/3-benzened disoulfonic acid disodium salt (SDBS) and sodium bis-2-ethylhexyl sulfosuccinate (Na(AOT)) were used as surfactant stabilizing agents. Solution was stirred for different periods (24, 36, 48 and 60 h) at 60 degrees C. The samples were then analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Introduction of surfactant stabilizing agents and different stirring times will affect the size and shape of particle formed and also the degree of aggregation. SDBS, however, produced better dispersion, finer particles and spherical shape nanoparticles, compared to Na(AOT). The finest particle size (20-30 nm) was obtained at 48 h stirring time with SDBS surfactant.

• 出版日期2010-5
• 单位中国林业科学研究院热带林业研究所