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The Effects of Argon Heat Treatment on the Response of Visible Light to Natural Rutile
详细信息   
摘要

In this study, the natural vanadiferous and ferruginous rutile was modified by heat treatment with the temperatures ranging from 5001 000 under the condition of argon atmosphere. XRD patterns of treated samples have revealed that there exist different levels of cell expansion with the increasing temperature,  and a new phase, ilmenite, is formed above 900 . The UV-vis diffuse reflection spectra show that the visible absorption is distinctly improved after argon heat treatment. 

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