Germanium loaded zeolite Y: Preparation and characterization

S. Tomiya, P. M. Petroff, D. Margolese, V. I. Srdanov, G. D. Stucky, Y. H. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

The cavities of molecular sieves offer an opportunity for synthesis of periodically ordered semiconductor nanoclusters. Ge clusters were synthesized in zeolite Y by thermal decomposition of GeH4 absorbed in the zeolite cages. Upon inclusion of germanium in proton exchanged zeolite Y (HY), the X-ray diffraction (XRD) pattern shows a small change in line positions and considerable change in intensities. No extra reflections were detected in either XRD or transmission electron diffraction (TED) for the samples synthesized at 300 °C. These observations are in accordance with the energy dispersive X-ray (EDX) spectroscopy data which reveal the presence of germanium within the HY in concentrations higher than 5×1019 cm-3. At annealing temperatures higher than 500 °C, small Ge crystallites (approximately 0.2 μm) form on the exterior surface of the HY, as documented by TED, TEM and absorption spectroscopy. The results from the absorption and photoluminescence spectroscopy of the Ge loaded HY will be discussed.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
PublisherPubl by Materials Research Society
Pages353-358
Number of pages6
ISBN (Print)1558991816
StatePublished - Jan 1 1993
EventProceedings of the 3rd Biennial Meeting of Chemical Perspectives of Microelectronic Materials - Boston, MA, USA
Duration: Nov 30 1992Dec 3 1992

Publication series

NameMaterials Research Society Symposium Proceedings
Volume286
ISSN (Print)0272-9172

Other

OtherProceedings of the 3rd Biennial Meeting of Chemical Perspectives of Microelectronic Materials
CityBoston, MA, USA
Period11/30/9212/3/92

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Tomiya, S., Petroff, P. M., Margolese, D., Srdanov, V. I., Stucky, G. D., & Zhang, Y. H. (1993). Germanium loaded zeolite Y: Preparation and characterization. In Materials Research Society Symposium Proceedings (pp. 353-358). (Materials Research Society Symposium Proceedings; Vol. 286). Publ by Materials Research Society.