Nanoporous gold obtained from a metallic glass precursor used as substrate for surface-enhanced Raman scattering
Nanoporous gold (NPG) has been synthesized by electrochemical de-alloying a new precursor, amorphous Au 30 Cu 38 Ag 7 Pd 5 Si 20 (at.%), starting from melt-spun ribbons. Ligaments ranging from 75 to 210 nm depending on the de-alloying time were obtained. Analytical and electrochemical evidence showe...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Scaglione, F [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Rechteinformationen: |
Nutzungsrecht: © 2015 Taylor & Francis 2015 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Philosophical magazine. Letters - Abingdon, Oxfordshire : Taylor & Francis, 1987, 95(2015), 9, Seite 474 |
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| Übergeordnetes Werk: |
volume:95 ; year:2015 ; number:9 ; pages:474 |
| Links: |
|---|
| DOI / URN: |
10.1080/09500839.2015.1093665 |
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| 520 | |a Nanoporous gold (NPG) has been synthesized by electrochemical de-alloying a new precursor, amorphous Au 30 Cu 38 Ag 7 Pd 5 Si 20 (at.%), starting from melt-spun ribbons. Ligaments ranging from 75 to 210 nm depending on the de-alloying time were obtained. Analytical and electrochemical evidence showed the ligaments contain residual Cu, Ag and Pd. Surface-enhanced Raman scattering from the NPG was investigated using pyridine and 4,4′-bi-pyridine as probe molecules. It was found that the activity is at maximum when the ribbon is fully de-alloyed although the ligaments then have a larger size. The enhancement is attributed to the small size of crystals in the ligaments, to their morphology and to trapped atoms. | ||
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070 530 DNB 33.60 bkl 51.00 bkl Nanoporous gold obtained from a metallic glass precursor used as substrate for surface-enhanced Raman scattering amorphous alloys Raman spectroscopy melt spinning nanograined structures de-alloying porous metals SERS |
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Nanoporous gold obtained from a metallic glass precursor used as substrate for surface-enhanced Raman scattering |
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Nanoporous gold obtained from a metallic glass precursor used as substrate for surface-enhanced Raman scattering |
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nanoporous gold obtained from a metallic glass precursor used as substrate for surface-enhanced raman scattering |
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Nanoporous gold obtained from a metallic glass precursor used as substrate for surface-enhanced Raman scattering |
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Nanoporous gold (NPG) has been synthesized by electrochemical de-alloying a new precursor, amorphous Au 30 Cu 38 Ag 7 Pd 5 Si 20 (at.%), starting from melt-spun ribbons. Ligaments ranging from 75 to 210 nm depending on the de-alloying time were obtained. Analytical and electrochemical evidence showed the ligaments contain residual Cu, Ag and Pd. Surface-enhanced Raman scattering from the NPG was investigated using pyridine and 4,4′-bi-pyridine as probe molecules. It was found that the activity is at maximum when the ribbon is fully de-alloyed although the ligaments then have a larger size. The enhancement is attributed to the small size of crystals in the ligaments, to their morphology and to trapped atoms. |
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Nanoporous gold (NPG) has been synthesized by electrochemical de-alloying a new precursor, amorphous Au 30 Cu 38 Ag 7 Pd 5 Si 20 (at.%), starting from melt-spun ribbons. Ligaments ranging from 75 to 210 nm depending on the de-alloying time were obtained. Analytical and electrochemical evidence showed the ligaments contain residual Cu, Ag and Pd. Surface-enhanced Raman scattering from the NPG was investigated using pyridine and 4,4′-bi-pyridine as probe molecules. It was found that the activity is at maximum when the ribbon is fully de-alloyed although the ligaments then have a larger size. The enhancement is attributed to the small size of crystals in the ligaments, to their morphology and to trapped atoms. |
| abstract_unstemmed |
Nanoporous gold (NPG) has been synthesized by electrochemical de-alloying a new precursor, amorphous Au 30 Cu 38 Ag 7 Pd 5 Si 20 (at.%), starting from melt-spun ribbons. Ligaments ranging from 75 to 210 nm depending on the de-alloying time were obtained. Analytical and electrochemical evidence showed the ligaments contain residual Cu, Ag and Pd. Surface-enhanced Raman scattering from the NPG was investigated using pyridine and 4,4′-bi-pyridine as probe molecules. It was found that the activity is at maximum when the ribbon is fully de-alloyed although the ligaments then have a larger size. The enhancement is attributed to the small size of crystals in the ligaments, to their morphology and to trapped atoms. |
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Nanoporous gold obtained from a metallic glass precursor used as substrate for surface-enhanced Raman scattering |
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