Raman spectroscopy of hydrotalcites with phosphate in the interlayer- implications for the removal of phosphate from water

Frost, Ray L., Musumeci, Anthony W., Kloprogge, J. Theo, Adebajo, Moses O., & Martens, Wayde N. (2006) Raman spectroscopy of hydrotalcites with phosphate in the interlayer- implications for the removal of phosphate from water. Journal of Raman Spectroscopy, 37(7), pp. 733-741.

View at publisher

Abstract

Hydrotalcites with phosphate in the interlayer were prepared at different pH. At pH >11.0 (PO4)3- was the intercalated ionic species whereas at pH < 11.0 a mixture of (PO4)3- and (HPO4)2- ions was intercalated. Powder X-ray diffraction shows the hydrotalcite formed at pH 9.5 is poorly diffracting with a d-spacing of 11.9; whereas the d(003) spacing for the phosphate interlayered hydrotalcite formed at pH 11.9 and 12.5 were 8.0 and 7.9 Å. The addition of a thermally activated ZnAl-HT to a phosphate solution resulted in the uptake of the phosphate and the reformation of the hydrotalcite. Raman spectroscopy of the phosphate interlayered hydrotalcites shows the interlayered anion is pH dependent and only above pH 11.9 is the orthophosphate anion intercalated. At lower pH the monohydrogen phosphate anion is intercalated.
Raman spectroscopy shows that upon addition of the thermally activated hydrotalcite to an aqueous phosphate solution results in the uptake of phosphate anion from the solution.

Impact and interest:

67 citations in Scopus
Search Google Scholar™
65 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® 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 the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

568 since deposited on 04 Aug 2006
13 in the past twelve months

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.

ID Code: 4760
Item Type: Journal Article
Refereed: Yes
Additional Information: This is one of a series of manuscripts on the use of thermally activated hydrotalcites for water purification. In this example phophate anions are removed from water.
Keywords: hydrotalcite, brucite, phosphate removal, Raman microscopy, carrboydite, hydrohonessite, takovite, mountkeithite
DOI: 10.1002/jrs.1500
ISSN: 0377-0486
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > School of Physical & Chemical Sciences
Copyright Owner: Copyright 2006 John Wiley & Sons
Copyright Statement: The definite version is available on publication at www3.interscience.wiley.com
Deposited On: 04 Aug 2006 00:00
Last Modified: 29 Feb 2012 13:24

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page