1. Materials Science Innovation and Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus) , Private Bag X2046 , Mmabatho , South-Africa
2. Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University (Mafikeng Campus) , Private Bag X2046 , Mmabatho 2735 , South-Africa
3. Federal college of Education , P.M.B. 1026 , Okene , Kogi-State , Nigeria
4. Department of Chemistry, Nelson Mandela University , P.O. Box 77000 , Port Elizabeth 6031 , South-Africa