Intrinsic AuPt-alloy particles decorated on TiO^sub 2^ nanotubes provide enhanced photocatalytic degradation
In this study we investigate the performance of noble metal co-catalysts on anodic TiO2 nanotubes for the photocatalytic degradation of a model pollutant. We create the noble metal decoration (nanoparticles of Au, Pt and mixed AuPt) intrinsically and extrinsically. Intrinsic decoration is achieved u...
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Published in | Electrochimica acta Vol. 292; p. 865 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier BV
01.12.2018
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Subjects | |
Online Access | Get full text |
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Summary: | In this study we investigate the performance of noble metal co-catalysts on anodic TiO2 nanotubes for the photocatalytic degradation of a model pollutant. We create the noble metal decoration (nanoparticles of Au, Pt and mixed AuPt) intrinsically and extrinsically. Intrinsic decoration is achieved using a noble metal containing titanium alloy for anodic tube growth. Extrinsic decoration is carried out by physical vapor deposition (PVD) of the same noble elements on pure titania tubes. We find the AuPt intrinsic decoration to provide a significant enhancement for the photocatalytic decomposition of the model pollutant acid orange 7 (AO7) due to a synergistic effect in the formed AuPt alloy. The AuPt alloy provides a photocatalytic activity that is higher than comparable extrinsic decoration or single element (Pt or Au) intrinsic decoration. |
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ISSN: | 0013-4686 1873-3859 |
DOI: | 10.1016/j.electacta.2018.09.206 |