Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/80151
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Chemically-synthesised, atomically-precise gold clusters deposited and activated on titania |
Author: | Anderson, D. Alvino, J. Gentleman, A. Al Qahtani, H. Thomsen, L. Polson, M. Metha, G. Golovko, V. Andersson, G. |
Citation: | Physical Chemistry Chemical Physics, 2013; 15(11):3917-3929 |
Publisher: | Royal Soc Chemistry |
Issue Date: | 2013 |
ISSN: | 1463-9076 1463-9084 |
Statement of Responsibility: | David P. Anderson, Jason F. Alvino, Alexander Gentleman, Hassan Al Qahtani, Lars Thomsen, Matthew I. J. Polson, Gregory F. Metha, Vladimir B. Golovko and Gunther G. Andersson |
Abstract: | Synchrotron XPS was used to investigate a series of chemically-synthesised, atomically-precise gold clusters Au(n)(PPh₃)(y) (n = 8, 9, 11 and 101, with y depending on cluster size) immobilized on titania nanoparticles. The gold clusters were washed with toluene at 100 °C or calcined at 200 °C to remove the organic ligand. From the position of the Au 4f₇/₂ peak it is concluded that cluster size is not altered through the deposition. From the analysis of the phosphorous spectra, it can be concluded that the applied heat treatment removes the organic ligands. Washing and calcination leads to partial oxidation and partial agglomeration of the clusters. Oxidation of the clusters is most likely due to the interaction of the cluster core with the oxygen of the titania surface after removal of ligands. The position of the Au 4f₇/₂ peak indicates that the size of the agglomerated clusters is still smaller than that of Au₁₀₁. |
Rights: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
DOI: | 10.1039/c3cp44005b |
Published version: | http://dx.doi.org/10.1039/c3cp44005b |
Appears in Collections: | Aurora harvest 4 Chemistry publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_80151.pdf | Published version | 2.16 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.