Interfacial chemistry
Summary
Acquire an understanding of interfacial phenomena, micro-heterogeneous colloidal solution systems and dynamic electrochemistry.
Content
1. Thermodynamics of interfaces
Interfacial tension and surface thermodynamic functions, Laplace pressure, spreading and wetting, contact angle (Young-Dupré equation), capillary ascension, vapor pressure of curved interfaces (Kelvin equation).
Gibbs adsorption equation, solutions of amphiphile molecules (surfactants), hydrophobic effect, micelle formation, critical micellar concentration. Monomolecular Langmuir-Blodgett films.
Langmuir, Fowler-Guggenheim and BET isotherms. Adsorption of gases on porous solids, capillary condensation in mesoporous particles.
Zeta potential, electro-osmosis and electrophoresis, streaming and sedimentation potentials.
Stability of colloids according to the DLVO model.
6. Light scattering
Light scattering for particle size measurements, Rayleigh scattering, Mie scattering.
7. Dynamic electrochemistry
Redox potentials, Nernst equation, mass transport, chronoamperometry, voltammetry, Butler-Volmer equation, three-electrode measurements
Keywords
Surface tension.
Micelles.
Adsorption.
Isotherms.
Electrokinetic phenomena
Colloidal stability
Light scattering
Dynamic electrochemistry
Learning Prerequisites
Recommended courses
Thermodynamique
Learning Outcomes
By the end of the course, the student must be able to:
- Formulate Formulate the thermodynamic definition of the surface tension
- Derive Derive the equations related to the surface tension (Young-Laplace, Kelvin, etc.)
- Establish Establish Gibb's adsorption equation
- Discuss Discuss the properties of surfactant solutions
- Derive Derive the expressions of the adsorption isotherms
- Derive Derive the equations relative to the electrokinetic phenomena
- Discuss Discuss the stability of colloids according to the DLVO model
- Formulate Formulate models and methods in dynamic electrochemistry
Transversal skills
- Use a work methodology appropriate to the task.
- Assess one's own level of skill acquisition, and plan their on-going learning goals.
Teaching methods
Lectures and exercies.
Expected student activities
Reading the lecture notes and solving the exercises
Assessment methods
Written examination
Supervision
| Office hours | No |
| Assistants | Yes |
| Forum | No |
Resources
Bibliography
Handouts and exercises.
Dans les plans d'études
- Semestre: Printemps
- Forme de l'examen: Ecrit (session d'été)
- Matière examinée: Interfacial chemistry
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 1 Heure(s) hebdo x 14 semaines
- Semestre: Printemps
- Forme de l'examen: Ecrit (session d'été)
- Matière examinée: Interfacial chemistry
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 1 Heure(s) hebdo x 14 semaines