Raman spectroscopy of the transition of α-gallium oxyhydroxide to β-gallium oxide nanorods
The thermo-Raman spectra of synthesised α-gallium oxyhydroxide nanorods proves the transition of α-gallium oxyhydroxide to β-gallium oxide nanorods occurs above 350 degrees Celsius but below 400 degrees Celsius. Scanning electron microscopy proves the morphology of the α-gallium oxyhydroxide nanorods is retained upon calcination to β-gallium oxide. X-ray diffraction shows that the nanorods are α-gallium oxyhydroxide converting upon calcination to β-gallium oxide.
Intense Raman bands are observed at 190, 262, 275, 430, 520, 605 and 695 cm-1 which undergo a red shift of ~5 cm-1 upon heating to 350 degrees Celsius. Upon thermal treatment above 350 degrees Celsius the Raman spectrum shows a significantly different pattern. Raman bands are observed at 155, 212, 280, 430, 570 and 685 cm-1. The thermoRaman spectra are in harmony with the TG and DTG patterns which show the reaction of α-gallium oxyhydroxide to β-gallium oxide occurs at 365 degrees Celsius.
Impact and interest:
Citation counts are sourced monthly from and citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
|Item Type:||Journal Article|
|Keywords:||Gallium oxide, oxyhydroxide, nanorods, nanofibre, Raman spectroscopy|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > School of Physical & Chemical Sciences
|Copyright Owner:||Copyright 2008 John Wiley & Sons|
|Copyright Statement:||The definitive version is available on publication at www3.interscience.wiley.com|
|Deposited On:||23 Sep 2008|
|Last Modified:||29 Feb 2012 13:46|
Repository Staff Only: item control page