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https://hdl.handle.net/2440/77821
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Type: | Journal article |
Title: | Anatase nanoparticles on supergene platinum-palladium aggregates from Brazil: Titanium mobility in natural waters |
Author: | Cabral, A. Reith, F. Lehman, B. Brugger, J. Meinhold, G. Tupinamba, M. Kwitko-Ribeiro, R. |
Citation: | Chemical Geology, 2012; 334:182-188 |
Publisher: | Elsevier Science BV |
Issue Date: | 2012 |
ISSN: | 0009-2541 1872-6836 |
Statement of Responsibility: | Alexandre Raphael Cabral, Frank Reith, Bernd Lehmann, Joël Brugger, Guido Meinhold, Miguel Tupinambá, Rogerio Kwitko-Ribeiro |
Abstract: | Supergene aggregates of platinum-palladium (Pt-Pd) intermetallic compounds from the Córrego Bom Sucesso alluvial deposit, Minas Gerais, Brazil, are coated with abundant, poorly crystalline nanoparticles of anatase (TiO2). The anatase coating is widespread, suggesting that the surface of the Pt-Pd grains catalytically destabilised Ti, which was likely dissolved by organic ligands in the ground waters. Association of TiO2 nanocrystallites with organic matter further suggests that biogenic processes could have mediated their formation. These anatase-coated Pt-Pd grains demonstrate an unexpected Ti mobility in supergene environments. © 2012 Elsevier B.V. |
Keywords: | Anatase nanoparticles Platinum–palladium Biogenic Brazil |
Rights: | Copyright © 2012 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.chemgeo.2012.10.014 |
Grant ID: | http://purl.org/au-research/grants/arc/DP1093238 http://purl.org/au-research/grants/arc/DP1093238 |
Published version: | http://dx.doi.org/10.1016/j.chemgeo.2012.10.014 |
Appears in Collections: | Aurora harvest 4 Earth and Environmental Sciences publications Environment Institute publications |
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