Abnormal IR effects of Pt nanostructured surfaces upon CO chemisorption due to interaction and electron-hole damping

Chen-Xu Wu; Hai Lin; You-Jiang Chen; Wen-Xuan Li; Shi-Gang Sun

doi:10.1063/1.1763135

Abnormal IR effects of Pt nanostructured surfaces upon CO chemisorption due to interaction and electron-hole damping

J Chem Phys. 2004 Jul 15;121(3):1553-6. doi: 10.1063/1.1763135.

Authors

Chen-Xu Wu¹, Hai Lin, You-Jiang Chen, Wen-Xuan Li, Shi-Gang Sun

Affiliation

¹ Soft Condensed Matter Lab, Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China. sgsun@xmu.edu.cn

PMID: 15260702
DOI: 10.1063/1.1763135

Abstract

The abnormal IR effects (AIREs) characterized by a positive-going peak of platinum (Pt) nanostructured surface generated in a square-wave potential treatment upon CO molecule chemisorption was observed and analyzed with a consideration of the interparticle interaction and electron-hole damping between nanoislands and CO molecules. A theoretical simulation shows that the islanded nanostructured Pt surfaces, which gives rise to interparticle interaction, coupling with electron-hole mechanism, may contribute to the origins of positive-going peak (AIREs) observed by in situ Fourier transformation IR (FTIR) experiments.