Effect of Preparation Methods on the Surface Characteristics of SiO2 and Al2O3 Nanoparticles
摘要
Abstract
The acid–base properties of the surface of SiO2 and Al2O3 nanoparticles obtained by various methods are characterized by the adsorption of acid–base indicators and dynamic pH-metry. The effects of the applied synthetic approaches (including liquid phase and plasma-chemical processes, as well as electric explosion) on the functional composition of the studied materials (predominance of Lewis or Brønsted acid or basic sites with different pKa values) and properties of suspensions prepared using the synthesized nanopowders are studied.