1. Chemistry Department, Faculty of Applied and Computer Science, Vaal University of Technology, Vanderbijlpark Campus Boulevard, 1900 Vanderbijlpark, South Africa
2. School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban 4001, South Africa
3. Analytical-Environmental and Material Science Research Group, Department of Industrial Chemistry, Faculty of Physical Sciences, Faculty of Physical Sciences, P.M.B 1515, Ilorin 234000, Nigeria
4. Energy, Sensors, and Multifunctional Nanomaterials Research Group, Department of Applied Chemistry, University of Johannesburg, Doornfontein, 2028 Johannesburg, South Africa