Adsorption, Desorption and Diffusion of Potassium on Metal and Oxide Surfaces

G Kerner,M Asscher,W Zhao,I M Danziger

doi:10.1007/978-94-010-0816-7_12

Adsorption, Desorption and Diffusion of Potassium on Metal and Oxide Surfaces

G Kerner, M Asscher + Show 2 more

https://doi.org/10.1007/978-94-010-0816-7_12

Copy DOI

Publication Date: Jan 1, 2001

Citations: 2

Affiliation: Hebrew College, The University of Texas at Austin

#Temperature Programmed Desorption Data #Temperature Programmed Desorption + Show 8 more

Abstract
Full-Text PDF
Similar Papers

Abstract

The adsorption-desorption and diffusion of potassium atoms on Ru(0001), Re(0001) and Cr2O3(0001) surfaces were studied using work function change (?), temperature programmed desorption (TPD) and optical second harmonic generation (SHG) measurements. Work function and TPD data indicated that on both metallic surfaces the bonding of potassium atoms is typical to alkali metals, namely, highly ionic nature at low coverages that gradually change to neutral layers at coverages approaching monolayer and above. This is revealed by the shift of the desorption peak from near 1000 K at 0.05 monolayer (ML) down to 350 K at 1ML.

Full Text