Size dependent catalysis with CTAB-stabilized gold nanoparticles
- CTAB-stabilized gold nanoparticles were synthesized by applying the seeding-growth approach in order to gain information about the size dependence of the catalytic reduction of p-nitrophenol to p-aminophenol with sodium borohydride. Five different colloidal solutions of stabilized gold nanoparticles have been characterized by TEM, AFM, UV-Vis, SAXS, and DLS for their particle size distributions. Gold nanoparticles (mean sizes: 3.5, 10, 13, 28, 56 nm diameter) were tested for their catalytic efficiency. Kinetic data were acquired by UV-Vis spectroscopy at different temperatures between 25 and 45 °C. By studying the p-nitrophenol to p-aminophenol reaction kinetics we determined the nanoparticle size which is needed to gain the fastest conversion under ambient conditions in the liquid phase. Unexpectedly, CTAB-stabilized gold nanoparticles with a diameter of 13 nm are most efficient.
Autor*innen: | A. Fenger, E. Fertitta, H. Kirmse, Andreas ThünemannORCiD, K. Rademann |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Physical chemistry, chemical physics |
Jahr der Erstveröffentlichung: | 2012 |
Verlag: | The Royal Soc. of Chemistry |
Verlagsort: | Cambridge |
Jahrgang/Band: | 14 |
Ausgabe/Heft: | 26 |
Erste Seite: | 9343 |
Letzte Seite: | 9349 |
Freie Schlagwörter: | Nanoparticle; SAXS; Small-angle X-ray scattering |
DOI: | 10.1039/c2cp40792b |
ISSN: | 1463-9076 |
ISSN: | 1463-9084 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 25.06.2012 |