1. Analytical/Inorganic/Industrial Chemistry Group, Department of Pure and Applied Chemistry, Veritas University, Abuja, P.O. Box 6523, Garki, Abuja, Nigeria
2. Department of Chemical and Environmental Engineering, University of Nottingham, Ningbo, China
3. School of Computing, Engineering & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
4. Gallogly College of Engineering, University of Oklahoma, USA