Abstract
The current understanding of the synthesis mechanisms of noble metal clusters is limited, in particular for Ag clusters. Here, we present a detailed investigation into the synthesis process of atomically monodisperse Ag29 clusters, prepared via reduction of AgNO3 in the presence of dithiolate ligands. Using optical spectroscopy, mass spectrometry, and X-ray spectroscopy, it was determined that the synthesis involves a rapid nucleation and growth to species with up to a few hundred Ag atoms. From these larger species, Ag29 clusters are formed and their concentration increases steadily over time. Oxygen plays an important role in the etching of large particles to Ag29. No other stable Ag cluster species are observed at any point during the synthesis.
Original language | English |
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Pages (from-to) | 28351-28361 |
Number of pages | 11 |
Journal | Journal of Physical Chemistry C |
Volume | 122 |
Issue number | 49 |
DOIs | |
Publication status | Published - 13 Dec 2018 |
Bibliographical note
Funding Information:The authors thank Hebatalla Elnaggar, Ties Haarman, Boyang Liu, and Ru-Pan Wang for their help during the beamtimes and Arjan Barendregt for help with mass spectrometry measurements. The ESRF and NWO are thanked for providing beamtime (proposals CH4969 and 26-01-1044). This work was financially supported by the Debye Graduate Programme (NWO project 022.004.016) and ESRF Graduate Programme; the mass spectrometry research was performed within the framework of NWO and supported by the large scale proteomics facility Proteins@Work (project 184.032.201) embedded in The Netherlands Proteomics Centre.
Publisher Copyright:
© 2018 American Chemical Society.
Funding
The authors thank Hebatalla Elnaggar, Ties Haarman, Boyang Liu, and Ru-Pan Wang for their help during the beamtimes and Arjan Barendregt for help with mass spectrometry measurements. The ESRF and NWO are thanked for providing beamtime (proposals CH4969 and 26-01-1044). This work was financially supported by the Debye Graduate Programme (NWO project 022.004.016) and ESRF Graduate Programme; the mass spectrometry research was performed within the framework of NWO and supported by the large scale proteomics facility Proteins@Work (project 184.032.201) embedded in The Netherlands Proteomics Centre.