Muench, Falk ; Kunz, Ulrike ; Neetzel, Cornelia ; Lauterbach, Stefan ; Kleebe, Hans-Joachim ; Ensinger, Wolfgang (2011)
4-(Dimethylamino)pyridine as a Powerful Auxiliary Reagent in the Electroless Synthesis of Gold Nanotubes.
In: Langmuir, 27 (1)
doi: 10.1021/la104015a
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Gold nanotubes of small particle sizes down to 5 nm and high aspect ratios were synthesized in ion track etched polycarbonate following a rational reaction design. 4-(Dimethylamino)pyridine (DMAP) was employed to adjust the electroless deposition by interfering with the autocatalytically active gold surface. Modification of the pH value and DMAP concentration led to a wide range of products which were characterized by SEM, TEM, and EDS. Filigree nanotubes of 10-15 nm wall thickness and 5.0 ± 2.1 nm grain size were obtained as well as robust and free-standing structures proving homogeneous deposition along the whole template length of 30 μm. Template-supported gold nanotubes were applied in the UV-vis monitored reduction of 4-nitrophenol by sodium borohydride under pseudo-first-order conditions. They proved to be a reliable microfluidic system of excellent catalytic activity coming up with an apparent rate constant of 1.3 x 10E-2 s-1. Despite a high flow rate, the reaction showed 99% conversion after a distance of just 60 µm.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Muench, Falk ; Kunz, Ulrike ; Neetzel, Cornelia ; Lauterbach, Stefan ; Kleebe, Hans-Joachim ; Ensinger, Wolfgang |
| Art des Eintrags: | Bibliographie |
| Titel: | 4-(Dimethylamino)pyridine as a Powerful Auxiliary Reagent in the Electroless Synthesis of Gold Nanotubes |
| Sprache: | Englisch |
| Publikationsjahr: | 4 Januar 2011 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Langmuir |
| Jahrgang/Volume einer Zeitschrift: | 27 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1021/la104015a |
| Kurzbeschreibung (Abstract): | Gold nanotubes of small particle sizes down to 5 nm and high aspect ratios were synthesized in ion track etched polycarbonate following a rational reaction design. 4-(Dimethylamino)pyridine (DMAP) was employed to adjust the electroless deposition by interfering with the autocatalytically active gold surface. Modification of the pH value and DMAP concentration led to a wide range of products which were characterized by SEM, TEM, and EDS. Filigree nanotubes of 10-15 nm wall thickness and 5.0 ± 2.1 nm grain size were obtained as well as robust and free-standing structures proving homogeneous deposition along the whole template length of 30 μm. Template-supported gold nanotubes were applied in the UV-vis monitored reduction of 4-nitrophenol by sodium borohydride under pseudo-first-order conditions. They proved to be a reliable microfluidic system of excellent catalytic activity coming up with an apparent rate constant of 1.3 x 10E-2 s-1. Despite a high flow rate, the reaction showed 99% conversion after a distance of just 60 µm. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Geomaterialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde |
| Hinterlegungsdatum: | 24 Jan 2011 16:21 |
| Letzte Änderung: | 16 Aug 2021 10:30 |
| PPN: | |
| Sponsoren: | The supply of gold solution by Schütz Dental GmbH is gratefully acknowledged. |
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