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题名: Absorption spectra of Se-8-ring clusters in zeolite 5A
作者: Lin ZJ;  Wang ZG;  Chen W;  Lin LY;  Li GH;  Liu ZX;  Han HX;  Wang ZP
发表日期: 1997
摘要: Samples with different weight ratio of Se to zeolite 5A (Se concentration) have been prepared by loading Se into the pores of zeolite 5A, and the measuerments of the absorption and Raman spectra have been carried out for the prepared samples. The measured absorption edges of the samples are close to the value for monoclinic Se containing Se-8-ring, suggesting the formation of Se-8-ring clusters(1) in the pores. The continuous and broadening features of the absorption spectra are interpreted by the strong electron-nucleus coupling in the Se-8-ring cluster. The absorption edges are red shifted with the increase of the Se concentration. It is tentatively attributed to two reasons. One is the existence of the double Se-8-ring cluster in the high Se concentration samples, and the other is that for the strong electron-nucleus coupling cluster, the absorption edge of the clusters system will be red shifted with the increase of the cluster concentration in the clusters system. A single broad band at about 262 cm(-1) is observed in the Raman spectra, which further supports the formation of Se-8-ring clusters. (C) 1997 Published by Elsevier Science S.A.
KOS主题词: Infrared spectra;  Raman effect;  Raman spectroscopy;  Zeolite 5A
刊名: MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Lin ZJ; Wang ZG; Chen W; Lin LY; Li GH; Liu ZX; Han HX; Wang ZP .Absorption spectra of Se-8-ring clusters in zeolite 5A ,MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY,1997,47(2):91-95
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