1. Particles and Catalysis Research Group The School of Chemical Engineering The University of New South Wales Sydney NSW 2052 Australia
2. The School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
3. Mark Wainwright Analytical Centre The University of New South Wales Sydney NSW 2052 Australia
4. The School of Chemical Engineering The University of New South Wales Sydney NSW 2052 Australia
5. Electron Microscopy Unit Mark Wainwright Analytical Centre The University of New South Wales Sydney NSW 2052 Australia