Extreme Ionization Leading to Coulomb Explosion of Small Palladium and Zirconium Oxide Clusters and Reactivity with Carbon Monoxide

Extreme Ionization Leading to Coulomb Explosion of Small Palladium and Zirconium Oxide Clusters and Reactivity with Carbon Monoxide

Reported herein are strong-field ionization studies of small, neutral Pd x O y and Zr x O y clusters made using ultrafast laser pulses (∼100 fs) centered at 624 nm. An enhancement in ionization of nearly 1.5 orders of magnitude lower in laser intensity than predicted from literature values is observ...

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Veröffentlicht in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2013-02, Vol.117 (6), p.1030-1034
Hauptverfasser: Ross, Matt W, Castleman, A. W
Format: Artikel
Sprache:eng
Schlagworte:
Carbon monoxide
Carbon Monoxide - chemistry
Charge
Clusters
Cobalt
Ionization
Palladium
Palladium - chemistry
Zirconium
Zirconium - chemistry
Zirconium dioxide
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Zusammenfassung:Reported herein are strong-field ionization studies of small, neutral Pd x O y and Zr x O y clusters made using ultrafast laser pulses (∼100 fs) centered at 624 nm. An enhancement in ionization of nearly 1.5 orders of magnitude lower in laser intensity than predicted from literature values is observed for both systems due to clustering. The change in enhancement upon addition of carbon monoxide at different pressures was also studied. Enhancement of high charge states of palladium was found to decrease upon CO addition, whereas in the case of the zirconium system, high charge states of zirconium were observed to increase. Pd and ZrO showed similar reactivity trends with CO and were found to have similar reactivity ratios in accord with their isovalent nature.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp302394a