1. Department of Chemistry
and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
2. Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
3. Stellenbosch University Water Institute Secretariat, Faculty of Natural Science, Stellenbosch Central, Stellenbosch 7599, South Africa