Analytical Chemistry and Spectroscopy
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
The surface interaction between ZrO2 and TiO2 in physical mixtures was studies using laser Raman spectroscopy (LRS). The characteristic peaks of ZrO2 disappeared after mixing ZrO2 and TiO2 with a loading ZrO2 of less than 25 wt.% and calcination at 773 K for 12 h. Surface polyhedrally coordinated Zr on TiO2 could not be detected by LRS. Therefore, MoO3 was used as a molecular probe to detect the nature of the interactions between ZrO2 and TiO2. The results revealed that ZrO2 could disperse on the surface of TiO2 and its interaction with TiO2 is different from that of MoO3 and TiO2.
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