Colloid chemistry is important in almost every aspect of modern technology. It is omnipresent in our daily life, with many applications, in e.g., food, pharmacy, cosmetics, paper, paint and ink, photography,... It also plays an essential role in many biological processes at cell level. Electrochemistry also has many applications, among others in batteries, electrolysis and corrosion.
In this course, we try to better understand the underlying processes in solutions (as used in electrochemistry) and in colloidal systems. We make quantitative links between macroscopic properaties of matter and microscopic properties of molecules/atoms, by means of a number of models.
In physical electrochemistry, we start with the major macroscopic aspects of electrochemistry and some applications (batteries, corrosion, electrolysis). Subsequently, we look at the microscopic aspects of electrochemistry, i.e;, ionic solutions. We look at ion-solvent and ion-ion interaction, and we make the link between the behavior of ions in solution and the activity coefficient, by the Debije-Hückel model. We also discuss transport of ions in solution (diffusion and migration). Finally, we look at the behavior of electrodes in a solution, i.e., the formation of an electric double layer.
in the second part ('colloid chemistry'), we describe the behavior of colloidal systems, i.e., electrical double layer, which determines the stability of a colloidal system, and we describe the many applications.
Besides the theoretical basis, we also spend time to applying the theory for solving numerical examples.