1. School of Chemistry and PhysicsUniversity of Kwazulu-NatalWestville Campus Durban. 4000. South Africa
2. MSMEnergy and ProcessesCouncil for Scientific and Industrial Research (CSIR) Pretoria. South Africa.
3. Department of ChemistryMichigan State University East Lansing MI 48824–1322 USA
4. Department of ChemistryGrand Valley State University Allendale, MI 49401 USA
5. Photocatalytic Synthesis GroupMESA+ Institute for NanotechnologyFaculty of Science and TechnologyUniversity of Twente 7500 AE Enschede The Netherlands