Underpinning the majority of my research is electrochemistry and in particular the photoelectrochemistry of semiconductors. Over the past decade my research activity has primarily focused on the use of electrochemistry to fabricate and characetrise nanomaterials. Templated electrodeposition, in both track etched polyer membranes and anodic alumina membranes, have allowed us to prepare nanorods of various materials. Electron microscopy (TEM and SEM) and XRD have been employed to characetrise the as-prepared materials. Use of the as-prepared materials in solar energy harvesting, photocatalysis and display applications is on-going. We also have a strong activity in the area of semiconductor Q-dot modified electrodes. II-VI Q-dots are fabricated in-house and deposited onto electrodes; using self-assembly, chemical anchoring and electrophoretic deposition. The as-prepared electrodes are characterised using photoelectrochemistry. The potential of Q-dot modified electrodes in solar cell applications is under consideration.
Facilities in Research Group
- Dry Box
- Photoelectrochemical Apparatus
This image shows a porous copper sample prepared by growing copper in a sea urchin shell. The triply periodic minimal surface of the sea urchin means that the sample has exceptional mechanical strength for its density.
CdSe quatum dot particles, each suspension contains monodisperse (size distribution <5%) particles. The suspensions displayed are in the size range 2 nm to 5 nm. The as-prepared particles are all CdSe with the same crystal structure. Owing to quantum confinement of charge carriers by the crystal lattice the different sized dots emit at different wavelengths.
A Biomimetic Material - copper deposited in a template formed from a sea urchin shell, a triply periodic minimal area surface (see Chem Commun 2007 above).
- The effect of perchlorate ions on a pyridine-based microgel J.P. Cook, D.J. Riley* Adv. Coll. Interf. Sci. 2009, 147-48, 67-73
Hydrothermal growth of ZnO nanorods aligned parallel to the substrate surface Y. Sun, N.A. Fox, D.J. Riley, M.N.R. Ashfold J. Phys. Chem. C, 2008, 112, 9234-9239.
Profiting from Nature: Macroporous Copper with Superior Mechanical Properties M Lai, A.N. Kulak, D. Law, Z. Zhang, F.C. Meldrum, D.J. Riley* Chemical Communications, 2007, 3547-3549.
An Electrochemical Quartz Crystal Microbalance in a Channel Flow Cell: A Study of Copper Dissolution
C.M. Galvani, A. Graydon, D.J. Riley* and D. York J. Phys. Chem. C, 2007, 111, 3669-3674.
Preparation of tin dioxide nanotubes via electrosynthesis in a template M. Lai, JAG Martinez, M Gratzel and D.J. Riley* Journal Of Materials Chemistry 2006, 16, 2843-2845.