Superatom Lab

Dedicated to study the chemistry and physics of superatomic clusters and nanoscale systems to solve pressing issues in sustainable chemistry, environmental remediation, and clean energy.



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Rohul Hayat

Materials and Physical Chemist | Research Scientist at KAUST | Surface Chemist | Former academician





Superatom Lab

Dedicated to study the chemistry and physics of superatomic clusters and nanoscale systems to solve pressing issues in sustainable chemistry, environmental remediation, and clean energy.




Toward Control of Gold Cluster Aggregation on TiO2 via Surface Treatments


Journal article


J. Růžička, F. Bakar, C. Hoeck, R. Adnan, C. McNicoll, T. Kemmitt, B. Cowie, G. Metha, G. Andersson, V. Golovko
Journal of Physical Chemistry C, vol. 119, 2015, p. 24465


Semantic Scholar DOI
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Cite

APA   Click to copy
Růžička, J., Bakar, F., Hoeck, C., Adnan, R., McNicoll, C., Kemmitt, T., … Golovko, V. (2015). Toward Control of Gold Cluster Aggregation on TiO2 via Surface Treatments. Journal of Physical Chemistry C, 119, 24465. https://doi.org/10.1021/acs.jpcc.5b07732


Chicago/Turabian   Click to copy
Růžička, J., F. Bakar, C. Hoeck, R. Adnan, C. McNicoll, T. Kemmitt, B. Cowie, G. Metha, G. Andersson, and V. Golovko. “Toward Control of Gold Cluster Aggregation on TiO2 via Surface Treatments.” Journal of Physical Chemistry C 119 (2015): 24465.


MLA   Click to copy
Růžička, J., et al. “Toward Control of Gold Cluster Aggregation on TiO2 via Surface Treatments.” Journal of Physical Chemistry C, vol. 119, 2015, p. 24465, doi:10.1021/acs.jpcc.5b07732.


BibTeX   Click to copy

@article{j2015a,
  title = {Toward Control of Gold Cluster Aggregation on TiO2 via Surface Treatments},
  year = {2015},
  journal = {Journal of Physical Chemistry C},
  pages = {24465},
  volume = {119},
  doi = {10.1021/acs.jpcc.5b07732},
  author = {Růžička, J. and Bakar, F. and Hoeck, C. and Adnan, R. and McNicoll, C. and Kemmitt, T. and Cowie, B. and Metha, G. and Andersson, G. and Golovko, V.}
}

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.


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