Physical Chemistry and Acid-Base Properties of Surfaces [Hardcover]

The first part of this book looks at the consequence of chemical and topological defects existing on real surfaces, which explain the wettability of super hydrophilc and super hydrophobic surfaces. There follows an in-depth analysis of the acido-basicity of surfaces with, as an illustration, different wettability experiments on real materials.  The next chapter deals with various techniques enabling the measurement of acido basicity of the surfaces including IR and XPS technics.

The last part of the book presents an electrochemical point of view which explains the surface charges of the oxide at contact with water or other electrolyte solutions in the frame of Bronsted acido-basicity concept.  Various consequences are deduced from such analyses illustrated by original measurement of the point of zero charge or by understanding the basic principles of the electrowetting experiments.

Introduction ix

Chapter 1. Wettability of an Ideal Surface: Overview 1

1.1. Wetting angle 1

1.2. Adhesion effect 4

1.3. Surface tension and free surface energy 5

Chapter 2. Real Surfaces 9

2.1. Wenzel’s model – topological defects 9

2.2. Cassie–Baxter model: chemical defects 11

2.3. Superhydrophilic surfaces 12

2.4. Superhydrophobic surfaces 16

2.5. Application 20

Chapter 3. Components of the Surface Energy 23

3.1. Overview 23

3.2. Molecular interactions and components of the energy 26

3.3. The hydrogen bond 28

3.4. Lewis acid-base interactions 28

3.5. The effective components of the interaction energy 31

3.6. Application 3lS%