Cerbelaud M, Videcoq A, Abélard P, Pagnoux C, Rossignol F, Ferrando R
SPCTS, UMR 6638, ENSCI, CNRS, 47/73 Avenue Albert Thomas, 87065 Limoges, Cedex, France.
Langmuir. 2008 Apr 1;24(7):3001-8. doi: 10.1021/la702104u. Epub 2008 Mar 1.
The aggregation process of a two-component dilute system (3 vol %), made of alumina submicrometer particles and silica nanoparticles, is studied by Brownian dynamics simulations. Alumina and silica particles have very different sizes (diameters of 400 and 25 nm, respectively). The particle-particle interaction potential is of the DLVO form. The parameters of the potential are extracted from the experiments. The simulations show that the experimentally observed aggregation phenomena between alumina particles are due to the silica-alumina attraction that induces an effective driving force for alumina-alumina aggregation. The experimental data for silica adsorption on alumina are very well reproduced.
通过布朗动力学模拟研究了由亚微米级氧化铝颗粒和纳米二氧化硅颗粒组成的两组分稀体系（3体积%）的聚集过程。氧化铝和二氧化硅颗粒尺寸差异很大（直径分别为400纳米和25纳米）。颗粒间相互作用势为DLVO形式。该势的参数从实验中提取。模拟结果表明，实验观察到的氧化铝颗粒间聚集现象是由于二氧化硅 - 氧化铝吸引力诱导了氧化铝 - 氧化铝聚集的有效驱动力。二氧化硅在氧化铝上吸附的实验数据得到了很好的重现。
