1. Advanced Surface chemistry (2013, 2nd semester)
Graduate course : # (Core course) Credit : 3
Class hour: Tue. & Thr. 3:30 - 4:45 am Class room:
Lecturer: Prof. Jihwa Lee (Office Rm , Tel: )
Textbooks
Introduction to Colloid and Surface Chemistry 4th Ed:
Duncan J. Show (John Wiley, 1994). Required.
Principles of Colloid and Surface Chemistry 3th Ed:
P.A.Hiemenz (Marcel Dekker, 1997) Recommended.
Reference
1. Introduction to surface chemistry and catalysis: G.A.Somorjai (John Wiley, 1994)
2. Low Energy Electron and Surface Chemistry : G. Ertl & J Küppers ( VCH, 1985)
3. Physical Chemistry of Surfaces: A.W. Adamson (John Wiley, 1982)
Grading
Midterm and final exams ( 25 % each)
1 term paper and poster presentation (30 % each)
Homework ( 20 % )

2. Topics to be covered Thermodynamics of surface
Phenomena at curved surfaces
Liquid-gas and liquid-liquid Interface
4. Adsorption and desorption
5. Surface reactions and heterogeneous catalysis
Surface spectroscopy
7. Preparation of colloids
8. Kinetic properties of colloids
9. Optical properties of colloids
10. Charged interfaces & Electro-kinetic phenomena
11. Colloid stability

3. Ch.1 Thermodynamics of surfaces
Surface thermodynamic quantities
Surface tensions of liquids
Intermolecular interactions
Measurements of surface tension
Surface tensions of solids

4. Surface thermodynamic quantities
Molecules at surface vs. in the bulk
Molecules (or atoms) at the surface are in a quite different chemical environment compared to those in the bulk in terms of intermolecular interactions.
The surface molecules have less number of neighbors to interact
with compared to those in the bulk.
The interactions are attractive in liquids and solids.
Therefore, the surface molecules are in a unstable state with a
higher free energy.
wire
Extension of a soap film l f
Extension of the film requires work w
dG = dw = f dl → ΔG = f l
soap film

10. Intermolecular interactions
Interaction energy of Ar-Ar
van der Waals (Dispersion force)
V(r) = - A/r6
2. dipole-induced dipole
dipole-dipole
Hydrogen bonding
Relative magnitude
1 < 2 < 3 < 4
Tb of gases (K)
He Ar Xe NH H2O C10H8

11. E field by a static electric dipole

13. γ of various materials Tm(Pb) = 601 K, fcc metal
Crystallographic orientation
dependence of γ of Pb

14. FCC (Ar, Ni, Pd, Cu, Ag, Au)

15. Correlation between
γ and ΔHsub
T = Tm

16. Critical point Empirical equations proposed At T = Tc
Not a liquid, not a vapor
Condensation and vaporization
occur rapidly.
Local fluctuation of density
No surface tension at T = Tc
Empirical equations proposed
γ = γ0 (T - Tc)n, where Tc is the critical T and γ0 is the surface tension at 0 K.
n ~ 1 for metallic liquids and n> 1 for organic liquids.
γ Vm2/3 = a (T–Tc) proposed by Eötvös, where a is a constant.
γ (Vmx)2/3 = a (T–Tc – 6) by Ramsay and Shields, where x is the degree of
association of the liquid (ex: x = 2 for acetic acid); most satisfaoctory