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Cluster Formation by Laser Ablation of Zeolites

Published online by Cambridge University Press:  10 February 2011

Hiroshi T. Komiyama ,
Azuchi Harano ,
Tatsuya Okubo  and
Masayoshi Sadakata
Hiroshi T. Komiyama
Affiliation:
Department of Chemical System Engineering, The University of Tokyo, 7–3–1 Hongo, Bunkyo-ku, Tokyo 113, Japan. [email protected]
Azuchi Harano
Affiliation:
Department of Chemical System Engineering, The University of Tokyo, 7–3–1 Hongo, Bunkyo-ku, Tokyo 113, Japan. [email protected]
Tatsuya Okubo
Affiliation:
Department of Chemical System Engineering, The University of Tokyo, 7–3–1 Hongo, Bunkyo-ku, Tokyo 113, Japan. [email protected]
Masayoshi Sadakata
Affiliation:
Department of Chemical System Engineering, The University of Tokyo, 7–3–1 Hongo, Bunkyo-ku, Tokyo 113, Japan. [email protected]
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Abstract

Several kinds of zeolites, crystal-SiO2 (α-quartz), arnorphous-SiO2 (quartz glass and ultrafine particles) and α-Al2O3, were ablated by an Nd:YAG laser. Generated positive ions from the targets were measured by TOF-MS (time-of-flight mass spectrometry). In the TOF mass spectra of ablated zeolites, TOx (x=0–2, T = tetrahedral atom, e.g., Si, Al), T2Ox (x=1) and T3Ox (x=4,5) were observed up to m/z=170 (m = mass, z = plus charge of clusters). In the spectra due to the oc-quartz, quartz glass and an α-Al2O3 plate, smaller species, T+, TO+ and TO2+, were mainly detected. These results demonstrate that the clusters from zeolites reflect the characters of the mother structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 57
Copyright
Copyright © Materials Research Society 1997

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References

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