Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/104582
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Type: Journal article
Title: Grouping and aggregation of ligand protected Au₉ clusters on TiO₂ nanosheets
Other Titles: Grouping and aggregation of ligand protected Au(9) clusters on TiO(2) nanosheets
Author: Al Qahtani, H.
Higuchi, R.
Sasaki, T.
Alvino, J.
Metha, G.
Golovko, V.
Adnan, R.
Andersson, G.
Nakayama, T.
Citation: RSC Advances, 2016; 6(112):110765-110774
Publisher: Royal Society of Chemistry
Issue Date: 2016
ISSN: 2046-2069
2046-2069
Statement of
Responsibility: 
Hassan S. Al Qahtani, Rintaro Higuchi, Takayoshi Sasaki, Jason F. Alvino, Gregory F. Metha, Vladimir B. Golovko, Rohul Adnan, Gunther G. Andersson and Tomonobu Nakayama
Abstract: Atomically precise chemically synthesised Au clusters, in the form of [Au₉(PPh₃)₈](NO₃)₃, were deposited onto titania nanosheets after UV pre-treatment of the substrate and examined with scanning tunneling microscopy (STM), atomic force microscopy (AFM) and synchrotron X-ray photoelectron spectroscopy (XPS) before and after heat treatment. The STM, AFM and XPS results complement each other. AFM was performed to determine the height of the deposited species and their dispersion on titania nanosheets. STM shows groups of clusters that at least partially consist of individual clusters both before and after annealing. STM cannot exclude the existence of individual clusters on the titania nanosheets outside the groups. XPS shows that before annealing the Au clusters are attached to the titania surface as individual clusters thus as clusters with non-agglomerated cluster cores. After annealing, both individual and agglomerated clusters are found on the surface. The combination of AFM, STM and XPS shows that the groups formed by the clusters consist of individual and agglomerated clusters.
Rights: This journal is © The Royal Society of Chemistry 2016
RMID: 0030059197
DOI: 10.1039/c6ra21419c
Appears in Collections:Chemistry publications

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