New observation on the formation of PbS clusters in zeolite-Y

Wei Chen*, Zhanguo Wang, Zhaojun Lin, Jiajun Qian, Lanying Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


PbS clusters in zeolite-Y have been prepared with the reaction of Pb 2+-ion-exchanged zeolite-Y with Na2S in solution at room temperature. Their absorption spectra show dramatic blue shifts from that of the bulk PbS. Obvious change of both the absorption edges and peak positions upon PbS concentrations have been observed. These phenomena provide evidences that PbS clusters have been formed within the zeolite. The absorption spectra show featureless structure and have no tails near the absorption edges. As the PbS loading density becomes higher, the absorption bands become stronger and sharpen. Order PbS clusters lattice with high quality might be formed in the supercages of zeolite-Y.

Original languageEnglish
Pages (from-to)1990
Number of pages1
JournalApplied Physics Letters
Publication statusPublished - 1995
Externally publishedYes


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