Affiliation: | 1.Research Unit of Noxious Chemistry and Environmental Engineering, Faculty of Science, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon ;2.Laboratory of Materials, Local Materials Promotion Authority, MINRESI/MIPROMALO, P.O. Box 2396, Yaoundé, Cameroon ;3.Department of Physics, Faculty of Applied Science, Umm Al-Qura University, PO.Box 21955, Makkah, Saudi Arabia ;4.Laboratory of Applied Inorganic Chemistry, Faculty of Science Department of Inorganic Chemistry, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon ;5.Department of Physics, University College in AlJumum, Umm Al-Qura University, P.O. Box 715, Makkah, 21955, Saudi Arabia ;6.Department of Engineering Enzo Ferrari, The University of Modena and Reggio Emilia, Via Vignolese 905/A, 41125, Modena, Italy ; |