| Title | Toward Control of Gold Cluster Aggregation on TiO2 via Surface Treatments |
| Publication Type | Journal Article |
| Year of Publication | 2015 |
| Authors | Ruzicka, J.-Y., F. Bakar Abu, Hoeck C., Adnan R., McNicoll C., Kemmitt T., Cowie B.C., Metha G.F., Andersson G.G., and Golovko V.B. |
| Journal | Journal of Physical Chemistry C |
| Volume | 119 |
| Issue | 43 |
| Pagination | 24465 - 24474 |
| Date Published | 2015 |
| ISSN | 19327447 (ISSN) |
| Keywords | After high temperature, Cluster aggregation, Deposition, Exposed to, Gold clusters, Gold compounds, Ligand shells, Ozone, Post treatment, titanium dioxide, Triphenyl phosphines, UV-Vis diffuse reflectance spectroscopy, X ray photoelectron spectroscopy |
| 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. © 2015 American Chemical Society. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84946071457&partnerID=40&md5=410e38f64132f472b122be49b057007d |
| DOI | 10.1021/acs.jpcc.5b07732Article |
