Selective adsorption
In surface science, selective adsorption is the effect when minima associated with bound-state resonances occur in specular intensity in atom-surface scattering.
In crystal growth, selective adsorption refers to the phenomenon where adsorbing molecules attach preferentially to certain crystal faces.
An example of selective adsorption can be demonstrated in the growth of Rochelle salt crystals. If copper ions are added to solution during the growth process, some crystal faces will slow down as copper apparently becomes a barrier to adsorption. However, by then adding sodium hydroxide to the solution, the preferred crystal faces will change once again.[1]
Discovery
[edit]Pronounced intensity minima were first observed in 1930 by Theodor Estermann, Otto Frisch, and Otto Stern,[2] during a series of gas-surface interaction experiments attempting to demonstrate the wave nature of atoms and molecules. The phenomenon has been explained in 1936 by John Lennard-Jones and Devonshire[who?] in terms of resonant transitions to bound surface states.[3]
Significance
[edit]The selective adsorption binding energies can supply information on the gas-surface interaction potentials by yielding the vibrational energy spectrum of the gas atom bound to the surface. Starting from the 1970s, it has been extensively studied, both theoretically and experimentally. Energy levels measured with this technique are available for many systems.[4]
References
[edit]- ↑ Holden, Alan (1982). Crystals and crystal growing. MIT Press. ISBN 0-585-35966-0. OCLC 1289746352.
- ↑ Schöllkopf, Wieland (2021), Friedrich, Bretislav; Schmidt-Böcking, Horst (eds.), "Grating Diffraction of Molecular Beams: Present Day Implementations of Otto Stern's Concept", Molecular Beams in Physics and Chemistry: From Otto Stern's Pioneering Exploits to Present-Day Feats, Cham: Springer International Publishing, pp. 575–593, doi:10.1007/978-3-030-63963-1_25, ISBN 978-3-030-63963-1, retrieved 2026-10-25
{{citation}}: CS1 maint: work parameter with ISBN (link) - ↑ Crépin, P.; Kupriyanova, E.; Guérout, R.; Lambrecht, Astrid; Nesvizhevsky, Valery; Reynaud, Serge; Vasiliev, Sergey; Voronin, Alexei (2019-05-20). "Quantum reflection of antihydrogen from a liquid helium bulk". Hyperfine Interactions. 240. doi:10.1007/s10751-019-1603-x.
- ↑ Wang, Rui; Zejun, Ding (2024-08-01). "First-principles studies of gas molecule adsorption on a LaB 6 (100) surface". Physical Chemistry Chemical Physics. 26: 21628–21641. doi:10.1039/d4cp02520b.
- Hulpke, E. (1992). Helium Atom Scattering from Surfaces. Springer. p. 168. ISBN 9783662027745.
- Torres, Zuleika Medina (2008). "Selective adsorbtion". Theoretical Studies of Gas-surface interactions. pp. 7–8.
 | This physical chemistry-related article is a stub. You can help Wikipedia by adding missing information. |