Seminar Series

Chemical Modification of Metal Oxide Materials

Speaker

Kalib Bell Final Ph.D. Seminar

Institute

Time & Place

Tue, 09 Aug 2016 11:00:00 NZST in Rutherford Room 531

All are welcome

Abstract

Metal oxides have seen a recent increase in research interest due to their useful chemical, physical and electronic properties making them low cost materials for a wide range of potential applications including: electronics, energy storage and catalysis1 . In all of these applications, control of the chemical and physical properties of the oxide surface may enhance performance or add new functionality. Modification with low-nanomatre scale organic layers by diazonium saltbased grafting is an attractive candidate for metal oxide materials as a variety of reaction conditions can be used and a wide range of surface properties can be conferred. Diazonium saltbased grafting has been used previously to modify the surfaces of metal oxides such as Fe3O4 2 , indium tin oxide3 and TiO2 4 . However, metal oxides exhibit a range of pH and potential stabilities and conductivities, requiring grafting conditions specific to each oxide. This presentation reports the development of conditions to modify metal oxide nanomaterials with organic layers and describes investigations of the effects of this modification on their chemical, physical and electronic properties.

Biography

1. MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, New Zealand. Email: kalib.bell@pg.canterbury.ac.nz.

2. MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.

References:

1. M. Batzill and U. Diebold, Prog. Surf. Sci., 2005, 79, 47.

2. N. b. w. Griffete, F. d. r. Herbst, J. Pinson, S. Ammar and C. Mangeney, J. Am. Chem. Soc., 2011, 133, 1646.

3. S. Maldonado, T. J. Smith, R. D. Williams, S. Morin, E. Barton and K. J. Stevenson, Langmuir, 2006, 22, 2884.

4. A. Mesnage, M. Abdel Magied, P. Simon, N. Herlin-Boime, P. Jégou, G. Deniau and S. Palacin, Journal of Materials Science, 2011, 46, 6332.