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FT-RAMAN SPECTROSCOPIC STUDIES OF THE DEGRADATION OF TITANIUM PEROXY GELS MADE FROM METALLIC TITANIUM AND HYDROGEN-PEROXIDE

被引：36
作者：
TENGVALL, P
VIKINGE, TP
LUNDSTROM, I
LIEDBERG, B
机构：
[1] Linkóping Institute of Technology, Department of Physics and Measurement of Technology
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1993年 / 160卷 / 01期
关键词：
D O I：
10.1006/jcis.1993.1362
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The chemical structures of fresh and aged Ti-peroxy gels, made from metallic titanium and hydrogen peroxide, were analyzed in the aqueous and solid states by FT-Raman spectroscopy. Fresh transparent gels displayed strong Ti-peroxy vibrations. In gels aged for 3 years in the aqueous state the dried precipitate was rutile. Fresh transparent gels were freeze-dried first, and then aged for 3 years in the dry state, however, displayed Ti-peroxide and anatase vibrations. Accelerated degradation and aging of solids of fresh transparent gels by heat treatment at 200°C gave rise to a white precipitate identified as anatase. Additional heat treatment of the white precipitate at 1050°C showed bands characteristic of rutile. The present study shows that rutile is the main degradation product formed in aging aqueous Ti-peroxy gels. © 1993 Academic Press, Inc.
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页码：10 / 15
页数：6
相关论文
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