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Raman spectroscopic study on ZrO 2 –TiO 2 using MoO 3 as a molecular probe
Author(s) -
Li YingSing,
Lu Weijie,
Collins W. Eugene
Publication year - 1991
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250220608
Subject(s) - raman spectroscopy , calcination , materials science , analytical chemistry (journal) , mineralogy , chemistry , catalysis , optics , organic chemistry , physics
The surface interaction between ZrO 2 and TiO 2 in physical mixtures was studies using laser Raman spectroscopy (LRS). The characteristic peaks of ZrO 2 disappeared after mixing ZrO 2 and TiO 2 with a loading ZrO 2 of less than 25 wt.% and calcination at 773 K for 12 h. Surface polyhedrally coordinated Zr on TiO 2 could not be detected by LRS. Therefore, MoO 3 was used as a molecular probe to detect the nature of the interactions between ZrO 2 and TiO 2 . The results revealed that ZrO 2 could disperse on the surface of TiO 2 and its interaction with TiO 2 is different from that of MoO 3 and TiO 2 .