Controlling Shape and Plasmon Resonance of Pt-Etched AuAg Nanorods
Pt-based catalysts with novel structure have attracted great attention due to their outstanding performance. In this work, H2PtCl6 was used as both precursor and etching agent to realize the shape-controlled synthesis of Pt-modified AuAg nanorods (NRs). During the synthesis, the as-prepared Ag shell...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 34(2018), 20 vom: 22. Mai, Seite 5719-5727 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2018
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't |
| Zusammenfassung: | Pt-based catalysts with novel structure have attracted great attention due to their outstanding performance. In this work, H2PtCl6 was used as both precursor and etching agent to realize the shape-controlled synthesis of Pt-modified AuAg nanorods (NRs). During the synthesis, the as-prepared Ag shell played a crucial role in both protecting the Au NRs from being etched away by PtCl62- and leading to an unusual growth mode of Pt component. The site-specified etching and/or growth depended on the concentration of H2PtCl6, where high-yield core-shell structure or dumbbell-like structure could be obtained. The shape-controlled synthesis also led to a tunable longitudinal surface plasmon resonance from ca. 649 to 900 nm. Meanwhile, the core-shell Pt-modified Au@Ag NRs showed approximately 4-fold enhancement in catalytic reduction reaction of p-nitrophenol than that of the Au NRs, suggesting the great potential for photocatalytic reaction |
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| Beschreibung: | Date Completed 10.09.2018 Date Revised 10.09.2018 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/acs.langmuir.8b00328 |