TiO2 anatase nanotubes for the purification of uranium,arsenic and lead containing water: An X-ray Photoelectron Spectroscopy study

Marco Bonato*, Kristín Vala Ragnarsdóttir, Geoffrey C. Allen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

TiO2 anatase nanotubes synthesised via anodic oxidation were used as adsorbent for the uptake of U and Pb from aqueous solution and the photoremoval of As(III). An X-ray photoelectron spectroscopy study of the sorbent medium surface revealed a high adsorption of U and Pb at pH 8. The adsorption of the uranyl ion was enhanced in an anoxy (N2) atmosphere, because this prevents the formation of very stable carbonyl complexes. As(III) was adsorbed on TiO2 but in the presence of O 2 and UV light was oxidized to As(V). XPS analysis revealed that in the pH range 3-9 As(V) was always the major species detected at the surface of the titania photocatalyst.

Original languageEnglish
Title of host publicationMaterials in Photocatalysis and Photoelectrochemistry for Environmental Applications and H2 Generation
PublisherMaterials Research Society
Pages58-63
Number of pages6
ISBN (Print)9781615677825
DOIs
Publication statusPublished - 2009
Event2009 MRS Spring Meeting - San Francisco, CA, United States
Duration: 13 Apr 200917 Apr 2009

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1171
ISSN (Print)0272-9172

Conference

Conference2009 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA
Period13/04/0917/04/09

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