Effect of Al content on the structure of Al-substituted goethite : a micro-Raman spectroscopic study

Liu, Haibo , Chen, Tianhu, Zou, Xuehua, Qing, Chengsong, & Frost, Ray L. (2013) Effect of Al content on the structure of Al-substituted goethite : a micro-Raman spectroscopic study. Journal of Raman Spectroscopy, 44(11), pp. 1609-1614.

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Abstract

The characterization of X-ray diffraction, X-ray fluorescence, and field emission scanning electron microscope were used to confirm the successful preparation of Al-substituted goethite with different Al content. The micro-Raman spectroscopy was utilized to investigate the effect of Al content on the goethite lattice. The results show that all the feature bands of goethite shifted to high wavenumbers after the occurrence of Al substitution for Fe in the structure of goethite. The shift of wavenumber shows a good linear relationship as a function of increasing Al content especially for the band at 299 cm−1 (R2 = 0.9992). The in situ Raman spectroscopy of thermally treated goethite indicated that the Al substitution not only hinders the transformation of goethite, but also retarded the crystallization of thermally formed hematite. All the results indicated that Raman spectrum displayed an excellent performance in characterizing Al-substituted goethite, which implied the promising application in other substituted metal oxides or hydroxides.

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3 citations in Scopus
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3 citations in Web of Science®

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ID Code: 70039
Item Type: Journal Article
Refereed: Yes
Keywords: Al-substituted goethite, goethite, micro-Raman spectroscopy, linear relationship, in situ
DOI: 10.1002/jrs.4376
ISSN: 0377-0486
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 John Wiley & Sons, Ltd.
Deposited On: 10 Apr 2014 23:10
Last Modified: 02 Dec 2014 11:56

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