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Type: Journal article
Title: Toward control of gold cluster aggregation on TiO₂ via surface treatments
Other Titles: Toward control of gold cluster aggregation on TiO(2) via surface treatments
Author: Ruzicka, J.
Abu Bakar, F.
Hoeck, C.
Adnan, R.
Mcnicoll, C.
Kemmitt, T.
Cowie, B.
Metha, G.
Andersson, G.
Golovko, V.
Citation: The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter, 2015; 119(43):24465-24474
Publisher: American Chemical Society
Issue Date: 2015
ISSN: 1932-7447
Statement of
Jan-Yves Ruzicka, Faridah Abu Bakar, Christoffer Hoeck, Rohul Adnan, Campbell McNicoll, Tim Kemmitt, Bruce C. Cowie, Gregory F. Metha, Gunther G. Andersson, and Vladimir B. Golovko
Abstract: Well-defined Au–TiO₂ materials were synthesized by deposition of triphenylphosphine-protected Au₉ clusters on TiO₂ (Aeroxide P-25), pre-treated in eight different ways and subsequently exposed to two post-treatments. X-ray photoelectron spectroscopy and UV–vis diffuse reflectance spectroscopy studies showed that in most cases the PPh₃ ligand shell was removed upon deposition even before post-treatment, coinciding with some cluster aggregation. However, clusters deposited on TiO₂ treated using H₂SO₄ and H2O₂ showed remarkable resistance to aggregation, even after high-temperature calcination, while clusters on H₂-treated TiO₂ showed the greatest resistance to aggregation under ozonolysis.
Description: Published: October 1, 2015
Rights: © 2015 American Chemical Society. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
DOI: 10.1021/acs.jpcc.5b07732
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